china iron ore dressing equipment, iron ore dressing equipment manufacturers, suppliers, price

china iron ore dressing equipment, iron ore dressing equipment manufacturers, suppliers, price

China manufacturing industries are full of strong and consistent exporters. We are here to bring together China factories that supply manufacturing systems and machinery that are used by processing industries including but not limited to: mineral machinery, mining equipment, mining machine. Here we are going to show you some of the process equipments for sale that featured by our reliable suppliers and manufacturers, such as Iron Ore Dressing Equipment. We will do everything we can just to keep every buyer updated with this highly competitive industry & factory and its latest trends. Whether you are for group or individual sourcing, we will provide you with the latest technology and the comprehensive data of Chinese suppliers like Iron Ore Dressing Equipment factory list to enhance your sourcing performance in the business line of manufacturing & processing machinery.

china iron ore pellet plant, iron ore pellet plant manufacturers, suppliers, price

china iron ore pellet plant, iron ore pellet plant manufacturers, suppliers, price

China manufacturing industries are full of strong and consistent exporters. We are here to bring together China factories that supply manufacturing systems and machinery that are used by processing industries including but not limited to: briquette machine, charcoal briquette machine, coal briquette machine. Here we are going to show you some of the process equipments for sale that featured by our reliable suppliers and manufacturers, such as Iron Ore Pellet Plant. We will do everything we can just to keep every buyer updated with this highly competitive industry & factory and its latest trends. Whether you are for group or individual sourcing, we will provide you with the latest technology and the comprehensive data of Chinese suppliers like Iron Ore Pellet Plant factory list to enhance your sourcing performance in the business line of manufacturing & processing machinery.

12 tons/h iron fine powder briquetting and drying process scheme-solutions-henan shisheng mining machinery co.,ltd

12 tons/h iron fine powder briquetting and drying process scheme-solutions-henan shisheng mining machinery co.,ltd

Iron fine powder, iron ore after crushing, grinding, mineral separation and other processing powder is called as iron powder, iron powder is the main raw material for sintering, which iron content will directly affect the finished product sinter quality. Iron fine powder according to ore dressing methods can be pide in to variety concentrate fines, such as magnetic separation, flotation separation, gravity separation, and other concentrate powder etc. Iron fine powder briquetting process: Adhesive mixing barrel Powdered Iron stirring feeder Iron powder briquetting machine Vertical dryer finished product Production process diagram: 1, powdered Iron: iron ore selected taste higher iron powder, pressed into balls, can proceed blast furnace smelting. 2, mixing barrel: used for iron powder adhesive bonding process for mixing pressing pellets. 3, mixing machine: General adopts biaxial mixing material, make the adhesive evenly, also play uniform feeding, 4, the iron powder briquette machine: through adhesive mixing uniformity, iron powder can be pressed into balls. 5, vertical drying machine: the water higher than 5% iron powder balls can be dried to reach the furnace smelting requirements; Iron fine powder briquetting production lineconfiguration: Device Model Power (kw) Liquid mixing barrel J400 1.1 stirring feeder 3500 11 Iron powder briquetting machine 650 37 Vertical dryer 2.5X7 22 Iron pressure briquette machine can be used to suppress coal, iron, coal, aluminum, iron, iron oxide, carbon powder, charcoal powder, slag, gypsum, tailings, sludge, kaolin, activated carbon, coke and other various kinds of powder, powder materials, waste, waste, widely used in refractories, power plant, metallurgy, chemical industry, energy, transport, heating and other industries, by iron powder briquette machine production of molding material, energy saving and environmental protection, convenient transportation, improve the utilization of the waste material, and has good economic benefit and social benefit. Working methods of the iron powder briquetting press machine: 1. the size of iron powder can be in 90-260 mesh. 2. iron powder can not allowed to high hardness impurities. Otherwise will damage the roll surface. 3. iron powder briquetting machine must be uniform, timely, appropriate use the spiral feeder; 4. observe the iron powder briquette machine back material, adjust the supply quantity of new material. More: Notes of iron briquette machine in the production process

Iron fine powder, iron ore after crushing, grinding, mineral separation and other processing powder is called as iron powder, iron powder is the main raw material for sintering, which iron content will directly affect the finished product sinter quality.

Iron pressure briquette machine can be used to suppress coal, iron, coal, aluminum, iron, iron oxide, carbon powder, charcoal powder, slag, gypsum, tailings, sludge, kaolin, activated carbon, coke and other various kinds of powder, powder materials, waste, waste, widely used in refractories, power plant, metallurgy, chemical industry, energy, transport, heating and other industries, by iron powder briquette machine production of molding material, energy saving and environmental protection, convenient transportation, improve the utilization of the waste material, and has good economic benefit and social benefit.

iron powder manufacturers and distributors find where to buy iron powder at iron-powder.com worldwide iron powder supplier

iron powder manufacturers and distributors find where to buy iron powder at iron-powder.com worldwide iron powder supplier

High purity fine iron powders are used to manufacture sintered components, soft magneticcomponents, brazing, iron fortification, friction products, printing, surface coating, welding,chemistry and polymer filtrations.

Types of Iron Powder ProductDescriptionSpecificationsOrderingMSDS IRON100Iron Powder, LD, HP, HS, Mesh 100OPENORDEROPEN IRON325Fine Iron Powder, LD, HP, Mesh 325OPENORDEROPEN IRON325ATFine Iron Powder, HD, HP, Mesh 325OPENORDEROPEN IRON325ZVFine Iron Powder, HD, HP, Mesh 325OPENORDEROPEN IRON300SCHigh purity iron powder for seed cleaningOPENORDER FE100.29Iron Powder, HD, HP, LS, Mesh 100OPENORDEROPEN IRON12Iron Powder, Coarse, Sponge, Mesh 20OPENORDEROPEN IRON195SPHigh purity food grade iron powderORDER CIPMSCarbonyl Iron Powder MS (microspheres)OPENORDEROPEN S100Steel Powder, HD, LP, Mesh 100OPENORDEROPEN S70Steel Powder, HD, LP, Mesh 70OPENORDEROPEN S1001Steel Powder, HD, HP, Mesh 100OPENORDEROPEN SM1001Soft Magnetic Iron PowderORDER S3001Steel Powder, Iron Powder, Coarse, DenseORDER S145CIron Powder, Carbon Steel PowderORDER S16SPSteel Powder, Spherical Mesh 16ORDER S50SPSteel Powder, Spherical Mesh 50ORDER CIRONCast Iron Powder, HD, LP, Mesh 50OPENORDEROPEN CIRONS100Cast Iron Powder, Thermal SprayORDER CIRON150Cast Iron Dust and blend with graphiteORDER SCLUMPSSteel Powder ClumpsORDER FE304M1Synthetic Magnetite (Magnetic Black Iron Oxide), Super FineOPENORDEROPEN MAG325Natural Magnetite (Magnetic Black Iron Oxide), Mesh 325OPENORDEROPEN

IRON325 is a super fine high green strength reduced iron powder specifically manufactured for low to medium density P/M applications, resin casting, and smooth magnetic paints and printing inks. (Mesh 325)

IRON325AT is a super fine, high density, free flow, reduced and atomized iron powder for food contact, cosmetics and high density cold casting. It is suitable for medium to high density P/M applications, resin casting, and heavy and strong magnetic paints and printing inks. Very low dust.(Mesh 325)

IRON325ZVis a super fine, ultra high density, free flow, reduced and atomized iron powder for food contact, cosmetics and very high density cold casting. It is suitable for medium to high density P/M applications, resin casting, and heavy and strong magnetic paints and printing inks. Medium dust. (Mesh 325)

S145C is a black iron powder. Imported from China. It is Mesh 100. High Apparent Density. Attracts by magnets. Can rust. May also be used as a compound of sparklers and firework products.This product is very clean. It appears to be made by atomization of black carbon steel.

FE100.29 is a high purity water atomized iron powder with irregularly shaped and high density particles. The high compressibility of FE100.29 makes it a perfect choice for manufacturing pure iron or iron alloy parts with high tensile strength as well as high compressive strength. FE100.29 is mainly used in powder metallurgy for production of high strength machine parts. (Mesh 100)

SM1001is a high purity soft iron powder for making soft magnetic components using P/M method or resin casting method. SM1001 is highly compressible, water-atomized powder specifically designed for high density, high strength soft magnetic P/M components.

S1001 is a highly compressible, water-atomized steel powder specifically designed for high density, high strength powder metallurgy and powder forging applications. In addition to the powder metallurgy, S1001 is used in production of brazing pastes, metal clays, magnetic paints, and resin casting.

S100 is black iron/ steel powder used in fire works, concrete (to increase weight and create rust effects), soil additive, chemical reactions (production of iron sulfate, iron chloride, ..), electromagnetism (as iron filings). (Mesh 100)

S70is black iron/ steel powder used in fire works, concrete (to increase weight and create rust effects), soil additive, chemical reactions (production of iron sulfate, iron chloride, ..), electromagnetism (as iron filings). (Mesh 70) (Note: S70 is more coarse than S100) (S70 is being discontinued. Please contact us for a substitute. )

S3001 is a coarse, high purity atomized iron powder for welding and alloying applications. Used as a filler metal it significantly improves the rate of metal deposition and overall speed and rate of productivity.

S50SP is a coarse solid spherical carbon steel granular powder with particles of about 300 micron. Granules of S50SP have a narrow particle size distribution. In other words most particles appear to be the same size. S50SP is often used as weight in some plastic and rubber products.

S16SP is a coarse solid spherical carbon steel granular powder with particles of about 1200 micron. Granules of S16SP have a narrow particle size distribution. In other words most particles appear to be the same size. S16SP is often used as weight in some plastic and rubber products.

GRPM5is a very fine, multi-purpose graphite powder used in powder metallurgy, metal clays, paints and coatings, lubricants, fingerprinting dust, mold release agent, batteries, plastic reinforcement, fire retardants, pencils, molds, and many other applications.

Our iron powders are mostly distributed by national or international distributors of metals and chemicals including ChemicalStore.com. Please contact 973-405-6248 to discuss your specific requirements based on your applications.

china foshan wandaye machinery equipment co.,ltd company profile

china foshan wandaye machinery equipment co.,ltd company profile

Foshan Wandaye Machinery Company Limited founded in 2002, is with combination of scientific research and development, project design, production, installation and debugging service, is one of the domestic largest iron remover equipment research, development and manufacturing company, is designated production units of large mines and ceramic production enterprises . Company has a strict and perfect enterprise management system and product quality management system, has a pragmatic, united struggle, pioneering and progressive management team, has a group of skilled, a fine style of science and technology personnel, has a high-quality staff team with no fear to endures hardship and being able to fight. Excellent products and broad market prospect build a solid foundation for the company's development.

Wandaye is specialized in manufacturing mining ore dressing iron equipment, main products are: ceramics powder slurry, glaze iron removal equipment; Hardware, plastics, food iron removal equipment; High-strength magnetic plate, bar, iron removal box, iron removal groove; As well as all kinds of magnetic materials and so on. Products are widely used in mining, power, building material, glass, ceramics, chemical and other industries, and exported to the United States, Britain, South Africa, Singapore, Malaysia, Egypt and other countries or regions.

Company in the long term cooperation with plenty of new and old customers, accumulated rich experience, made company's products more unique in the industry, favored by the majority of users. Company always adhere to the "excellence, the pursuit of perfection" spirit of enterprise, after years of development, always adhere to the strives for the survival by the quality, seek development by science and technology, strong management efficiency, its brand for first class is the management idea, is the industry leader in product quality.

As a production and sales integration of production enterprises, wandaye with high quality products, advanced production technology, excellent product quality, perfect after-sales service, which is based on the support and trust of users, to speed up the pace of development, the national famous brand, to the world first-class enterprise.

Foshan Wandaye Machinery Equipment Co., Ltd., founded in 2002, is with combination of scientific research and development, project design, production, installation and debugging service, is one of the domestic largest iron remover equipment research, development and manufacturing company, is designated production units of large mines and ceramic production enterprises . Company has a strict and perfect enterprise management system and product quality management system, is a pragmatic, united struggle, pioneering and progressive management team, has a group of skilled, a fine style of science and technology personnel, has a high-quality staff team with no fear to endures hardship and being able to fight. Excellent products and broad market prospect build a solid foundation for the company's development.

Wandaye machinery company has engineering and technical personnel with rich experience in the whole line project design, providing professional solution for mining customers with a complete set of products. offering one-stop service as ore dressing experiments, mining factory's engineering design, a complete set of equipment needed by ore dressing , technical support and after-sales service.

Wandaye engineering personnel will focus on Kaolin mining and sodium, potassium feldspar and etc., combine the most suitable design closely with the needs of customers, tailor the best solution for the customer, and realize the maximization of customer value. In the face of each project, Wandaye will establish the project team, led by senior engineer. Relying on the profound professional quality and long term of actual combat experience, from the perspective of professional, do deeply research and inspection, find out personalized solutions to each project from the view of professional design, market conditions and customer requirements, provide more delicate professional services to clients.

Company in the long term cooperation with plenty of new and old customers, accumulated rich experience, made company's products more unique in the industry, favored by the majority of users. Company always adhere to the "excellence, the pursuit of perfection" spirit of enterprise, after years of development, always adhere to the strives for the survival by the quality, seek development by science and technology, strong management efficiency, its brand for first class is the management idea, is the industry leader in product quality.

As a production and sales integration of production enterprises, wandaye with high quality products, advanced production technology, excellent product quality, perfect after-sales service, which is based on the support and trust of users, to speed up the pace of development, the national famous brand, to the world first-class enterprise.

the 7 most useful manganese ore beneficiation methods | fote machinery

the 7 most useful manganese ore beneficiation methods | fote machinery

The data recorded by Statistics in 2020 shows that although in 2019 manganese ore price fell to the bottom, the price in 2020 still gets increased to 4.5 U.S. dollars per metric ton unit CIF even under the impact of COVID-19. Manganese ore prices are forecast to remain at global prices by 2020 over the next two years, which is good news to manganese ore suppliers.

Besides, Justin Brown, managing director of Element 25said Manganese has the traditional end uses in steel, and that market is fairly stable". As people's demand for laptops and electric cars increases, the output of lithium batteries has also soared, and the most important element in lithium batteries is manganese.

Manganese ore after the beneficiation process is applied in many respects in our daily lives. Of annual manganese ore production, 90 percent is used in steelmaking, and the other 10 percent is used respectively in non-ferrous metallurgy, chemical industry, electronics, battery, agriculture, etc.

In the metallurgical industry, manganese ore is mostly used for manganese-forming ferroalloys and manganese metal. The former is used as deoxidizers or alloying element additives for steelmaking, and the latter is used to smelt certain special alloy steels and non-ferrous metal alloys. Manganese ore can also be used directly as an ingredient in steelmaking and ironmaking.

When smelting manganese-based iron alloys, the useful elements in manganese ore are manganese and iron. The level of manganese is the main indicator for measuring the quality of manganese ore. The iron content is required to have a certain ratio with the amount of manganese.

Phosphorus is the most harmful element in manganese ore. The phosphorus in steel reduces the impact of toughness. Although sulfur is also a harmful element, it has a better desulfurization effect during smelting, and sulfur is volatilized into sulfur dioxide or enters the slag in the form of calcium sulfide or manganese sulfide.

Applications in Metallurgy Manganese content (%) Ferromanganese (%) Phosphorus manganese (%) Low carbon ferromanganese 36%40% 68.5 0.0020.0036 Carbon Ferro Manganese 33%40% 3.87.8 0.0020.005 Manganese Silicon Alloy 29%35% 3.37.5 0.00160.0048 Blast Furnace Ferromanganese 30% 27 0.005

In the chemical industry, manganese ore is mainly used to prepare manganese dioxide, manganese sulfate, and potassium permanganate. It is also used to make manganese carbonate, manganese nitrate and manganese chloride.

Since most manganese ore is a fine-grained or fine-grained inlay, and there are a considerable number of high-phosphorus ore, high-iron ore, and symbiotic beneficial metals, it is very difficult to beneficiate.

At present, commonly used manganese ore beneficiation methods include physical beneficiation (washing and screening, gravity separation, strong magnetic separation, flotation separation, joint beneficiation), chemical beneficiation (leaching method) and fire enrichment, etc.

Washing is the use of hydraulic washing or additional mechanical scrubbing to separate the ore from the mud. Commonly used equipment includes washing sieves, cylinder washing machines and trough ore-washing machine.

The washing operation is often accompanied by screening, such as direct flushing on the vibrating screen or sifting the ore (clean ore) obtained by the washing machine to the vibrating screen. Screening is used as an independent operation to separate products of different sizes and grades for various purposes.

At present, the gravity separation is only used to beneficiate manganese ore with simple structure and coarse grain size and is especially suitable for manganese oxide ore with high density. Common methods include heavy media separation, jigging and tabling dressing.

It is essential to recover as much manganese as possible in the gravity concentration zone because its grinding cost is much lower than the manganese in the flotation process, and simple operations are more active.

Because of the simple operation, easy control and strong adaptability of magnetic separation can be used for dressing various manganese ore, and it has dominated the manganese ore dressing in recent years.

Gravity-magnetic separation plant of manganese ore mainly deals with leaching manganese oxide ore, using the jig to treat 30~3 mm of cleaned ore can obtain high-quality manganese-containing more than 40% of manganese. And then can be used as manganese powder of battery raw material.

The jigging tailings and less than 3 mm washed ore are ground to less than 1mm, and then being processed by strong magnetic separator. The manganese concentrate grade would be increased by 24% to 25%, and reaches to 36% to 40%.

Adopting strong magnetic-flotation desulfurization can directly obtain the integrated manganese concentrate product; the use of petroleum sodium sulfonate instead of oxidized paraffin soap as a collector can make the pulp be sorted at neutral and normal temperature, thus saving reagent consumption and energy consumption.

The enrichment of manganese ore by fire is another dressing method for high-phosphorus and high-iron manganese ore which is difficult to select. It is generally called the manganese-rich slag method.

The manganese-rich slag generally contains 35% to 45% Mn, Mn/Fe 12-38, P/Mn<0.002, and is a high-quality raw material to manganese-based alloy. Therefore, fire enrichment is also a promising method for mineral processing for low-manganese with high-phosphorus and high-iron.

Manganese ore also can be recovered by acid leaching for production of battery grade manganese dioxide for low-manganese ores. Leaching of manganese ore was carried out with diluted sulphuric acid in the presence of pyrite in the temperature range from 323 to 363 K.

After processed by hydraulic cone crusher, the smaller-sized manganese ore would be fed to grinding machine- ball mill. It can grind the ore to a relatively fine and uniform particle size, which lays a foundation for further magnetic separation of manganese ore.

It is indispensable grading equipment in the manganese ore beneficiation plant. Because by taking advantage of the natural settling characteristics of ore, a spiral classifier can effectively classify and separate the manganese ore size to help control the amount of grinding required.

The flexibility of flotation is relatively high. You can choose different reagents according to the type and grade of the ore. Although the entire process of froth flotation is expensive, it can extract higher-grade manganese ore.

The magnetic separator is a highly targeted magnetic separation device specially developed for the properties of manganese ore. The device not only has the advantages of small size, lightweight, high automation, simple and reasonable structure, but also has high magnetic separation efficiency and high output.

If you want to beneficiate high-grade manganese ore and maximize the value of manganese concentration, Fote Company is an ore beneficiation equipment manufacturer with more that 35-years designing and manufacturing experience and can give you the most professional advice and offer you all machines needed in the ore beneficiation plant (form crushing stage to ore dressing stage). All machines are tailored to your project requirements.

As a leading mining machinery manufacturer and exporter in China, we are always here to provide you with high quality products and better services. Welcome to contact us through one of the following ways or visit our company and factories.

Based on the high quality and complete after-sales service, our products have been exported to more than 120 countries and regions. Fote Machinery has been the choice of more than 200,000 customers.

ball mill,spiral classifier,flotation cell,magnetic separator,conical ball mill

ball mill,spiral classifier,flotation cell,magnetic separator,conical ball mill

Fote Machinery is a leading and pioneering enterprise with the most advanced international level in R&D, manufacturing and selling of large-scale crushing & screening plants, mineral procssing equipment and industrial milling equipments.

Ball mill can process barite, slime, potash feldspar, tungsten carbide, copper ore, slag, hematite, white ash, gold ore, aluminum powder, high alumina porcelain, iron powder, fluorite ore Steel slag,dozens or even hundreds of ores

Bar Mill According to the model and size of different prices will vary. If you need the price of a bar grinder, please tell us the specific model and quantity of the mill you need. We will send you the specific price of the mill.

Ceramic ball mill is the necessary grinding equipment in ceramics factory, because it has larger energy consumption, so there is a larger space for saving energy and reducing consumption.

iron ore mining and dressing - tec-science

iron ore mining and dressing - tec-science

Iron is one of the most important metals in mechanical engineering, as it is present in sufficient quantities on earth. The extraction of iron can therefore be very economical. However, pure iron is not suitable for use as a construction material. It is much too soft in its pure form and has too little strength to meet most mechanical requirements. For this reason, it is necessary to use alloying additives to give the iron its hardness and strength.

It has been shown that carbon is an excellent alloying element. Within certain limits, carbon has a very high strength and hardness increasing effect and is very cheap compared to other alloying elements. Such a compound of iron and carbon is generally referred to as steel, where the carbon content is less than 2 %. The special importance of steel in mechanical engineering is already demonstrated by the daily production of around 4 million tons of steel!

In contrast to the direct reduced iron process, the blast furnace process can be operated on a large scale. The blast furnace process accounts for over 80 % of total steel production. Therefore, the blast furnace process will be discussed in more detail in the following.

Before the iron ores can be fed to the ironworks, they must first be mined (ore extraction) and specially processed for the blast furnace process (ore processing). These process steps are described in more detail in the following sections.

Iron does not occur in nature as a pure substance but as a compound in rocks, which can contain up to 50 % iron. These ferrous rocks are also called iron ores. The iron compounds contained therein are mainly iron oxides, but also iron carbonates or iron sulphides. The most important iron oxides include:

In addition to the actual iron compounds, however, the iron ore always contains various (undesirable) admixtures, which are not of interest for steel production. These waste rocks are also referred to as gangueand are often oxides such as, for example:

These unwanted admixtures are also the reason why steel always contains accompanying elements such as silicon, manganese, phosphorus and sulphur as well as other elements. The maximum values to be observed for these accompanying elements are prescribed for steels depending on the steel grade.

For technical and economic reasons, it makes sense to reduce the gangueto a minimum even before the iron ore actually melts down. Otherwise, an unnecessarily high use of coal or thermal energy in the subsequent blast furnace process would be necessary if too much impurities had to be melted. This means that the mined iron ores need to be specially processed in advance before the blast furnace process.

Regions in which iron ore has formed over millions of years (e.g. through volcanism) and can be mined economically are also referred to as iron ore deposits. Especially many ore deposits can be found in countries such as China, Australia, Brazil, India and Russia. These countries account for around 85 % of the total global iron ore mining volume.

The iron ore extracted in the deposits, mostly by blasting, is initially very coarse and unwieldy, which gives this untreated rock the name coarse ore. After the coarse ore has been extracted, it is crushed directly at the deposits with the aid of cone crushers or jaw crushers to more manageable sizes of approx. 15 mm. This is also known as lump ore. In addition to lump ore, fine ore (approx. 1 mm) and ground ore (orepowder) (approx. <0.1 mm) can also be obtained by crushing and grinding.

Lump ore can usually fed directly into the blast furnace process, because the special processing of these ores is relatively complex and expensive, so that it is only to a certain extent economically worthwhile to process this ore. Fine ore and ore powder, on the other hand, are specially processed for the blast furnace process. This ore processing will be discussed in more detail in the next section.

After the iron ore has been prepared by crushing and grinding during ore extraction, the ore is actually processed. The aim of this is to reduce the undesirable high proportion of admixtures to a desired minimum in order to increase the iron content. This is done by processes such as flotation or magnetic separation. Subsequently, the milled ores are lumped by sintering or pelletizing in order to optimize chemical reactions in the blast furnace process.

In principle, the undesirable gangue can never be completely separated from the iron ores during ore dressing. This means that a certain amount of unwanted elements always enters the blast furnace process. Slag-forming aggregates (and other special processes) are then used to separate these unwanted substances during or after the blast furnace process.

In froth flotation, the different wettability between the iron compounds and the undesirable gangue is used. While, for example, water is wettening the gangue relatively well, i.e. adheres to them, water tends to roll off the ferrous particles. This effect can finally be used to separate gangue from iron compounds.

For this purpose, the ground ores (obtained by crushing and grinding) are mixed with water infroth flotation cells. This aqueous suspension is also called slurry. Gas bubbles are generated in the slurryby air supply or stirrers on the floor. Due to the rather low water wettability of the iron-containing ore powder, the rising gas bubbles adhere relatively well to them. The significantly better wettability of the gangue, however, means that they remain completely wetted with water and gas bubbles hardly adhere to them.

While the ferrous particles are thus floated upwards with the adhering gas bubbles, the gangue in the slurry sinks to the bottom. To prevent the gas bubbles from bursting after ascent and to prevent the iron ore from sinking back to the ground, foam stabilizers are added, which create a relatively stable foam layer on the surface. The fluffy, strongly ferrous foam can then be skimmed off and dried. The gangue remaining in the slurry is pumped off after froth flotation and disposed of.

In magnetite-containing rock, there is another possibility of separating gangue and iron ore. As the name magnetite already suggests, this type of iron ore is a magnetic rock. This allows the ground ore to pass relatively easily through magnetic separators, where the ferrous rock is separated from the rest of the gangue (magnetic separation).

For this purpose, the ground ore is mixed with water to a mud-like mass and passed over a rotating magnetic roller. The ferrous mud adheres to the rolls and is then stripped off and dried. The separated gangue falls through a separate funnel into a container and is disposed of. In principle, this process is also suitable for the iron ores siderite and hematite, which become weakly magnetic when heated.

After processing the iron ore in froth flotation cells or magnetic separators, the finely ground ores cannot be fed directly to the blast furnace, as the enormous compression due to the charging in the blast furnace would impede gas flow. The ores must therefore be made lumpy so that there are sufficient cavities in the charging column for a good gas flow through. The lumpy pieces are made by sintering and pelletizing.

During sintering, the fine ores are first mixed with additives and fine coke. This mixture then passes through a funnel onto a circulating moving grate. Ignition flames then set the mixed coke on fire. Due to the high temperatures, the ores bake together to a sinter cake (called sintering). Air vents provide a suction effect (chimney effect) so that the sinter cake actually bakes together over the entire cross-section. Afterwards, the porous sinter cake is broken to grain sizes of approx. 15 mm by rotating blades. Such sinter plants are usually located directly in the ironworks.

During pelletizing, ore powder is rolled into iron ore green pellets in rotating drums together with water, binding agents and additives.Globules with grain sizes of approx. 15 mm are produced, which are then baked into porous pellets. Pellets are mainly produced by special ore suppliers and then delivered to the ironworks.

The main advantages of sintering or pelleting are the increased controllability of the composition and the accelerated chemical reaction in the blast furnace process due to the porosity (better gas flow).

peru 200,000 tpa copper and iron mineral processing plant - xinhai

peru 200,000 tpa copper and iron mineral processing plant - xinhai

The ores were primary ores, which were roughly divided into brass, pyrite, magnetite, tremolite skarn according to the mineral assemblage, structure and structural characteristics. The main useful elements in the ore were copper, iron, etc., the industrial type of ore was copper iron ore.

Crushing and screening: After the raw ore was extracted from the mine, it was crushed to 0-150mm by a jaw crusher set at the pit mouth, then transported to the raw ore storage yard by car. The raw ore in the storage yard was pushed to the raw ore gathering bin under which the chute feeder was installed. The raw ore was uniformly delivered to the belt conveyor, then transported to the circular vibrating screen for screening. The oversize materials returned to the hydraulic cone crusher for fine crushing through the belt conveyor. The fine products were also transported to circular vibrating screen for screening, forming a closed circuit crushing and screening process. The undersize material was transported to the powder ore for storage through the belt conveyor, and the particle size of the crushed product was -12mm.

Grinding & classification + instant flotation: The powder ore was fed to belt conveyor by motor vibration feeder, and evenly sent to the grid ball mill by belt conveyor, the coarse grinding products were sent to the high weir type spiral classifier, the classifier sand returned to the ball mill, the overflow flew into the instant flotation. The tailings of instant flotation operation adopted Xinhai wear-resisting rubber pump to pump them into the Xinhai wear-resisting hydrocyclone for second classification, the cyclone settling returned back to the ball mill for regrinding, and the cyclone overflow flew to the copper flotation.

Copper flotation: In addition to the above copper instant flotation, the instant flotation tailings were sent to second classifying by a cyclone, and the cyclone overflow flew to the copper flotation operation. The copper flotation adopted one roughing, three scavenging and four concentrating to recover the fine copper mineral, and adopted one concentrating and one scavenging to recover the sulfur.Magnetic separation of magnetite: The copper flotation tailings were sent to the semi-counter-current magnetic separator by Xinhai wear-resisting rubber pump for two stage magnetic separation, and then produced the iron concentrate.

Dewatering of copper concentrate: The copper flotation concentrate and instant flotation concentrate were pumped together to the efficient improved thickener for concentration. The concentrated slurry was sent to the filter press by Xinhai wear-resisting two-stage pump for filtration, and the filtered concentrate was transported to the warehouse by the forklift truck.Dewatering of iron concentrate: The iron concentrate was pumped to the concentrator by Xinhai wear-resisting rubber pump, and the concentrated pulp flew to the disk-type vacuum filter. The filtering products were transported to the iron concentrate warehouse for storage by the belt conveyor.Sulfur concentrate disposal: Due to the different nature of the raw ore, the sulfur concentrates rate and grade fluctuated greatly. There was no special mechanical dewatering equipment for sulfur concentrate, the sulfur concentrate flew to the sedimentation tank for natural dewatering.Tailings disposal: The tailings flew directly into the tailings pond.

a look at the process of pelletizing iron ore for steel production

a look at the process of pelletizing iron ore for steel production

Iron ore is a critical raw material in modern society; it is the basis of the steel industry, which provides us with everything from infrastructure to appliances. Courtesy of iron ore, steel is all around us.

The production of steel from iron ore has increasingly been employing the pelletizing or balling technique as a result of the many benefits it can offer, combined with changes in the market that have made pellets more favorable.

This process varies depending on the ore source, but typically involves various stages of crushing and grinding to reduce the size of the iron ore. Separation techniques such as magnetic separation or froth flotation are then used to separate the gangue (unwanted) materials from the iron content.

In addition to mined iron ore, other sources of iron, such as flue dust collected from blast furnaces, or the dust produced at mine sites, is also frequently pelletized so it can be utilized, as opposed to disposed of.

The production of iron ore pellets from fines to finished product can differ based on a variety of factors. As such, its important to note that the process described here is a generalized approach subject to many variations.

In order to pelletize iron ore fines and/or concentrate, a binder is needed. Binder selection can vary from process to process depending on the unique goals of the project at hand, but bentonite clay is a common choice. Various additives may also be included with the feedstock to improve performance in the blast furnace.

Material exiting the mixer is continuously fed into the pelletizing device, along with additional liquid binder. The binder causes the particles to become tacky, picking up more fines as they roll in the drum or disc a layering phenomenon known as accretion.

Pellets must meet a myriad of criteria in terms of characteristics, many of which can be controlled during the pelletizing process. This might include using additives to adjust the chemical makeup or metallurgical properties of the pellets, or adjusting variables in the process to control physical characteristics such as crush strength or particle size distribution.

Once pellets reach the desired size, they exit the pelletizing device and are carried on to the next step (a screening step is often necessary). At this stage, pellets are referred to as green pellets.

Disc pelletizers, or balling discs, consist of an inclined, rotating disc mounted on a stationary structure. Disc pelletizers are often chosen for their ability to fine-tune particle size control, producing a tight window of particle size distribution. Pelletizers also result in far less recycle.

As material enters the disc, it is taken up by the rotation. With the continuous addition of binder and feedstock, particles continue to pick up more fines, rolling and growing in similar fashion to a snowball.

Balling drums consist of a large, cylindrical drum, through which the material tumbles to promote agglomeration. Much like the disc pelletizer, binder and feedstock are continuously added and particles pick up additional fines as they tumble through the drum, which is set on a slight angle to allow gravity to assist in moving pellets through the process.

Upon balling, green pellets must be fired in order to cure into their final, hardened form. This is carried out through induration a thermal treatment that heats the pellets to just before their melting point, causing them to become extremely hard. This is typically preceded by a drying step, which may be carried out in the induration unit, or in a separate device. After induration, pellets may be cooled.

As there can be significant variation in process requirements and sources of iron ore fines, testing is often an essential part of the development of a successful iron ore pelletizing operation. Different sources of iron ore will respond differently to agglomeration, and process requirements will subsequently vary.

The FEECO Innovation Center, where FEECO process engineers conduct batch- and pilot-scale testing, has been working with iron ore pellet producers for decades; process engineers regularly test iron ore sources to work out process variables such as feed rates, additive inclusion, binder selection, required equipment specifications, and more be it for flue dust, concentrate, run of mine fines, electric arc furnace (EAF) dust, or other source of fines.

Iron ore is essential to meeting the demands of the steel industry that continues to build the world around us. Pelletizing, or balling, carried out through either a disc pelletizer or rotary drum, is a key part of efficiently and sustainably producing steel from iron ore fines of varying sources.

FEECO is a leader in feasibility testing, custom disc pelletizers and balling drums, and parts and service support for the iron ore balling/pelletizing industry. For more information, contact us today!

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