new reto project to conduct annual iron ore tailings treatment with capacity of three million tons and anticipated sales of approximately rmb 280 million

new reto project to conduct annual iron ore tailings treatment with capacity of three million tons and anticipated sales of approximately rmb 280 million

BEIJING, June 23, 2021 /PRNewswire/ -- ReTo Eco-Solutions, Inc. (NASDAQ: RETO) ("ReTo" or the "Company"), a provider of technology solutions for the improvement of ecological environments, today announced a new iron tailings project (the "Project") in the Hainan Province with a three-million-ton treatment capacity, which is expectedto yield approximately RMB 280 million (approximately US$43.7 million) annual sales after reaching production. .

ReTo will design, build and manage a facility in the Hainan Province and this latest project will be responsible for the largest volume of iron tailings in Hainan.ReTo was selected by the local government based on its patented technology, ability to implement and manage secondary sorting of iron tailings, selection and use of iron ore, and expertise in recycling the remaining ore and processing it into environmentally friendly building materials.The Company expects to generate RMB 131 million (approximately US$20.4 million) of gross profit from the Project.

The Company adopts the world's most advanced, mature and reliable technologies for production by adopting various systems such as three-stage crushing, two-stage screening, sand making and beneficiation. The remaining material from the Company's production can also be used as an aggregate to produce building materials.

Iron ore tailings, one of the most common solid wastes in the world, are a byproduct of the beneficiation process of iron ore concentrate.The volume of this type of waste has accelerated in China in recent years due to its rapid economical growth, and expansion in iron and steel industries. The high volume of waste generated creates a significant environmental and economic cost due to its massive land occupation and ecological damage, which result in safety hazard. Therefore, there is a greater need than ever for effective waste management systems and solutions.

Mr. Hengfang Li, ReTo's Chairman and Chief Executive Officer, said, "This is a great way for us to start 2021 as we continue to build on our business momentum from 2020. We have been a leader in Hainan's ecological and environmental protection industry for the past ten years. The construction of this latest project will help us build excellent reputation and improve track-record of success in the region. We will be providing a comprehensive recycling, capture and reuse solution, which will help mitigate the damaging effect of the existing waste problem, while at the same time helping to recover for reuse valuable iron resources that would otherwise be lost. There is also great significance to this project as it will showcase our one-stop, comprehensive solid waste utilization and ecological management strategy, while putting into practice our philosophy of using science and technology to restore ecology, as we strive to make the daily living environment more beautiful for Hainan's residents."

Founded in 1999, ReTo (NASDAQ: RETO), through its proprietary technologies, systems and solutions, is striving to bring clean water and fertile soil to communities worldwide. The Company offers a full range of products and services, ranging from the production of environmentally-friendly construction materials, environmental protection equipment, and manufacturing equipment used to produce environmentally-friendly construction materials, to project consulting, design, and installation for the improvement of ecological environments, such as ecological soil restoration through solid waste treatment. For more information, please visit: http://en.retoeco.com.

This press release contains forward-looking statements. Forward-looking statements include statements concerning plans, objectives, goals, strategies, future events or performance, and underlying assumptions and other statements that are other than statements of historical facts. When the Company uses words such as "may," "will," "intend," "should," "believe," "expect," "anticipate," "project," "estimate," or similar expressions that do not relate solely to historical matters, it is making forward-looking statements. Specifically, the Company's statements regarding: 1) the ability of additional features and customized configurations on its machinery and equipment products to attract new customers; 2) the ability of the growth of its business to resume in the near future; and 3) the further spread of COVID-19 or the occurrence of another wave of cases and the impact it may have on the Company's operations are forward-looking statements. Forward-looking statements are not guarantees of future performance and involve risks and uncertainties that may cause the actual results to differ materially from the Company's expectations discussed in the forward-looking statements. These statements are subject to uncertainties and risks including, but not limited to, the following: the Company's goals and strategies; the Company's future business development; product and service demand and acceptance; changes in technology; economic conditions; the growth of the construction industry in China; reputation and brand; the impact of competition and pricing; government regulations; fluctuations in general economic and business conditions in China and assumptions underlying or related to any of the foregoing and other risks contained in reports filed by the Company with the Securities and Exchange Commission. For these reasons, among others, investors are cautioned not to place undue reliance upon any forward-looking statements in this press release. Additional factors are discussed in the Company's filings with the U.S. Securities and Exchange Commission, which are available for review at www.sec.gov. The Company undertakes no obligation to publicly revise these forward-looking statements to reflect events or circumstances that arise after the date hereof.

steel manufacturing (metal) company kolkata | rashmi group

steel manufacturing (metal) company kolkata | rashmi group

An innovative spirit and the desire to establish excellence at every stage of production have been the driving forces behind the companys remarkable growth story. Rashmi Metaliks Limited is 1.50 MTPA State-Of-Art Integrated Steel manufacturing facility comprises of viz., Pellet, Sinter, Pig iron, Sponge Iron, Ductile Iron Pipe, Billet, TMT & Wire Rod. The Kitty of products also include Ferro Alloys and 120 MW of Captive Power Generation Plant. Pellet has a production of 2.1 MTPA & will be expanded to 3.3 MTPA.

Applying highest ecological standards and latest manufacturing technology has made Rashmi Metaliks Limited a name synonymous with reliability & quality in the Eastern Indias iron & steel manufacturing industry.

It makes products like Pig Iron, Sponge Iron, Billets, TMT Bars, Wire Rods and Ductile Iron Pipes. It consists of a Sinter Plant, Pellet Plant, Blast Furnace, Power Plant, Steel Melting Shop and Rolling Mill. It is accredited with quality certification ISO 9001:2008 and environmental certification OHSAS18001, ISO 14001:2004.

wills' mineral processing technology | sciencedirect

wills' mineral processing technology | sciencedirect

Wills' Mineral Processing Technology: An Introduction to the Practical Aspects of Ore Treatment and Mineral Recovery has been the definitive reference for the mineral processing industry for over thirty years. This industry standard reference provides practicing engineers and students of mineral processing, metallurgy, and mining with practical information on all the common techniques used in modern processing installations. Each chapter is dedicated to a major processing procedurefrom underlying principles and technologies to the latest developments in strategies and equipment for processing increasingly complex refractory ores. The eighth edition of this classic reference enhances coverage of practical applications via the inclusion of new material focused on meeting the pressing demand for ever greater operational efficiency, while addressing the pivotal challenges of waste disposal and environmental remediation. Advances in automated mineralogy and analysis and high-pressure grinding rolls are given dedicated coverage. The new edition also contains more detailed discussions of comminution efficiency, classification, modeling, flocculation, reagents, liquid-solid separations, and beneficiation of phosphate, and industrial materials. Finally, the addition of new examples and solved problems further facilitates the books pedagogical role in the classroom.

Wills' Mineral Processing Technology: An Introduction to the Practical Aspects of Ore Treatment and Mineral Recovery has been the definitive reference for the mineral processing industry for over thirty years. This industry standard reference provides practicing engineers and students of mineral processing, metallurgy, and mining with practical information on all the common techniques used in modern processing installations.

Each chapter is dedicated to a major processing procedurefrom underlying principles and technologies to the latest developments in strategies and equipment for processing increasingly complex refractory ores. The eighth edition of this classic reference enhances coverage of practical applications via the inclusion of new material focused on meeting the pressing demand for ever greater operational efficiency, while addressing the pivotal challenges of waste disposal and environmental remediation.

Advances in automated mineralogy and analysis and high-pressure grinding rolls are given dedicated coverage. The new edition also contains more detailed discussions of comminution efficiency, classification, modeling, flocculation, reagents, liquid-solid separations, and beneficiation of phosphate, and industrial materials. Finally, the addition of new examples and solved problems further facilitates the books pedagogical role in the classroom.

Wills' Mineral Processing Technology: An Introduction to the Practical Aspects of Ore Treatment and Mineral Recovery has been the definitive reference for the mineral processing industry for over thirty years. This industry standard reference provides practicing engineers and students of mineral processing, metallurgy, and mining with practical information on all the common techniques used in modern processing installations. Each chapter is dedicated to a major processing procedurefrom underlying principles and technologies to the latest developments in strategies and equipment for processing increasingly complex refractory ores. The eighth edition of this classic reference enhances coverage of practical applications via the inclusion of new material focused on meeting the pressing demand for ever greater operational efficiency, while addressing the pivotal challenges of waste disposal and environmental remediation. Advances in automated mineralogy and analysis and high-pressure grinding rolls are given dedicated coverage. The new edition also contains more detailed discussions of comminution efficiency, classification, modeling, flocculation, reagents, liquid-solid separations, and beneficiation of phosphate, and industrial materials. Finally, the addition of new examples and solved problems further facilitates the books pedagogical role in the classroom.

Wills' Mineral Processing Technology: An Introduction to the Practical Aspects of Ore Treatment and Mineral Recovery has been the definitive reference for the mineral processing industry for over thirty years. This industry standard reference provides practicing engineers and students of mineral processing, metallurgy, and mining with practical information on all the common techniques used in modern processing installations.

Each chapter is dedicated to a major processing procedurefrom underlying principles and technologies to the latest developments in strategies and equipment for processing increasingly complex refractory ores. The eighth edition of this classic reference enhances coverage of practical applications via the inclusion of new material focused on meeting the pressing demand for ever greater operational efficiency, while addressing the pivotal challenges of waste disposal and environmental remediation.

Advances in automated mineralogy and analysis and high-pressure grinding rolls are given dedicated coverage. The new edition also contains more detailed discussions of comminution efficiency, classification, modeling, flocculation, reagents, liquid-solid separations, and beneficiation of phosphate, and industrial materials. Finally, the addition of new examples and solved problems further facilitates the books pedagogical role in the classroom.

iron ore beneficiation technologies goodrich magma industrial technologies limited

iron ore beneficiation technologies goodrich magma industrial technologies limited

a) Reduction roasting & beneficiation of low-grade hematite / limonite / goethite ores or tailings (35-55% Fe grades) into magnetite ore, using a fluid bed roaster & subsequent pelletisation in the vertical shaft kiln

We offer a new technology from China, which can beneficiate low grades of hematite / limonite / goethite ores (including BHQ & BHJ) and also recover the left-over tailings from the conventional beneficiation plants, by converting them into magnetite ores, using the fluidised bed reduction-roasting method. Once the iron ore becomes magnetite, it is much easier to beneficiate & pelletise the same.

The efficiency of iron recovery is 90-95% (as against 70-75% in the conventional beneficiation plants) & the left-over Fe in the tailings is only 10-15% (as against 35-45% in the conventional beneficiation plants).Click here for more details

We offer dry beneficiation plants to up-grade the contaminated hematite iron ores. In the dry beneficiation process, iron ore is ground to 0-2 mm size. After screening, the fines are passed through a very high gauss rare earth magnetic separator (up to 8,000 gauss). A demo plant has been set up & experiments on many types of raw materials were carried out in the last 5 years, which have proven that up-gradation of Fe from 50-52% to 56-60% Fe is possible. The non-mag contains 20-40% Fe. The technology is also suitable for pre-separation of contaminants such as silica & alumina from low grade ores of larger sizesClick here for more details

beneficiation technology

beneficiation technology

The DEC Flotation column is a high efficiency flotation device which handles slurry feeds spanning a wide range of particles sizes and will float up to 1.5mm particles with ease, at high efficiency. The DEC Flotation column combines low capital cost and high throughput design, a unique bubble generator for low power and water usage besides functioning as both a Rougher and a Scavenger in one compact unit.

There are hundreds of flotation circuits around the world which have been operating for many years. Operational Analysis of most of the older flotation circuits will show that the tailings contain economically recoverable amounts of the mineral being processed.

Most commercial grade iron ore bodies do not require beneficiation to produce a saleable product. Low grade iron ore bodies can be beneficiated using the DEC Flotation column and produce a saleable product at a low production cost per ton.

Recovery of fine coal which is generally minus 4mm (1/8 inch) material began in most industrialized countries only at the start of the 1950s. The earlier processing methods resulted in enormous tonnages of coal tailing dumps and coal lagooned material available for economic re-treatment.

iron ore beneficiation technology and process,gravity and magnetic separation | prominer (shanghai) mining technology co.,ltd

iron ore beneficiation technology and process,gravity and magnetic separation | prominer (shanghai) mining technology co.,ltd

Iron ore is one of the important raw materials for the production of pig iron and steel in the iron and steel industry. There are many types of iron ore. According to the magnetic properties of the ore, it is mainly divided into strong magnetism and weak magnetism. In order to improve the efficiency and production capacity of ore dressing and meet the smelting production requirements of iron and steel plants, appropriate and technology should be selected according to the different properties of different iron ore during beneficiation to achieve better beneficiation effects.

The composition of iron ore of a single magnetite type is simple, and the proportion of iron minerals is very large. Gangue minerals are mostly quartz and silicate minerals. According to production practice research, weak magnetic separation methods are often used to separate them. In a medium-sized magnetic separation plant, the ore is demagnetized and then enters the crushing and screening workshop to be crushed to a qualified particle size, and then fed to the grinding workshop for grinding operations. If the ore size after grinding is greater than 0.2 mm, one stage of grinding and magnetic separation process is adopted; if it is less than 0.2 mm, two stages of grinding and magnetic separation process are adopted. In order to increase the recovery rate of iron ore as much as possible, the qualified tailings may be scavenged and further recovered. In areas lacking water resources, a magnetic separator can be used for grinding and magnetic separation operations.

Because magnetite is easily depleted under the effect of weathering, such ores are generally sorted by dry magnetic separator to remove part of gangue minerals, and then subjected to grinding and magnetic separation to obtain concentrate.

The magnetite in the polymetallic magnetite is sulfide magnetite, and the gangue mineral contains silicate or carbonate, and is accompanied by cobalt pyrite, chalcopyrite and apatite. This kind of ore generally adopts the combined process of weak magnetic separation and flotation to recover iron and sulfur respectively.

Process flow: the ore is fed into the magnetic separator for weak magnetic separation to obtain magnetite concentrate and weak magnetic separation tailings, and the tailings enter the flotation process to obtain iron and sulfur.

The common process flow in actual production is: the raw ore is fed into the shaft furnace for roasting and magnetization, and after magnetization, it is fed into the magnetic separator for magnetic separation.

Gravity separation and magnetic separation are mainly used to separate coarse-grained and medium-grained weakly magnetic iron ore (20~2 mm). During gravity separation, heavy medium or jigging methods are commonly used for the gravity separation of coarse and very coarse (>20 mm) ores; spiral chutes, shakers and centrifugal concentrators for medium to fine (2~0.2mm) ores, etc. Reselect method.

In magnetic separation, the strong magnetic separator of coarse and medium-grained ore is usually dry-type strong magnetic separator; the fine-grained ore is usually wet-type strong magnetic separator. Because the grade of concentrate obtained by using one beneficiation method alone is not high, a combined process is often used:

Combination of flotation and magnetic separation: the magnetite-hematite ore of qualified particle size is fed into the magnetic separator for weak magnetic separation to obtain strong magnetic iron ore and weak magnetic tailings, and the tailings are fed into the magnetic separator for weak magnetic separation. In strong magnetic separation, strong magnetic separation tailings and concentrate are obtained, and the concentrate is fed to the flotation machine for flotation to obtain flotation iron concentrate tailings.

Combined gravity separation and magnetic separation: similar to the combined flow of flotation and magnetic separation, only the flotation is replaced by gravity separation, and the products are gravity separation concentrate and tailings. These two combined methods can improve the concentrate grade.

The above are mainly the common separation methods and technological processes of strong and weak magnetic iron ore. The composition of natural iron ore is often not so simple, so in actual production, it is necessary to clarify the mineral composition, and use a single sorting method or a joint sorting method according to the corresponding mineral properties. Only in this way can the beneficiation effect be improved.

Prominer has been devoted to mineral processing industry for decades and specializes in mineral upgrading and deep processing. With expertise in the fields of mineral project development, mining, test study, engineering, technological processing.

iron ore beneficiation technology, reverse flotation method,flotation process design | prominer (shanghai) mining technology co.,ltd

iron ore beneficiation technology, reverse flotation method,flotation process design | prominer (shanghai) mining technology co.,ltd

With the development of the iron and steel industry, the quality requirements for iron ore concentrates are becoming more and more stringent. The beneficiation technology of iron ore beneficiation has generally been paid attention to. Among them, the reverse flotation method of iron ore has low separation particle size lower limit and separation speed. Fast, easy to control and other advantages, which has been widely used in iron ore dressing plants.

The reverse flotation process of iron ore is used in iron ore with complex iron mineral composition and high iron grade. It is mostly used to process coarse concentrates of gravity separation and magnetic separation to obtain high-grade iron ore.

There are two types of reverse flotation technology for iron ore, one is anionic collector reverse flotation method, the other is cationic collector reverse flotation method. The specific contents of the two reverse flotation methods are as follows:

Quartz is easily activated by iron ions. When the pH is greater than 10, starch, sulfonated lignin and dextrin can effectively inhibit iron minerals. The medium regulator is sodium hydroxide or mixed with sodium carbonate.

Anionic collector reverse flotation method is suitable for ore with high iron grade and gangue which is easy to float quartz. Adjust the pH of the pulp to above 11 with sodium hydroxide (or sodium hydroxide and sodium carbonate), suppress hematite with starch, dextrin, etc., activate quartz with calcium chloride, and then use fatty acid collectors to collect Quartz activated by calcium ions. The product in the tank is hematite concentrate.

The advantages of the anionic collector reverse flotation method are: the composition changes in the iron ore and the sludge content have little effect on the flotation index; because the product in the tank is iron concentrate, it is easy to adhere to the collector. Concentrate and filter.

Anionic collector reverse flotation generally uses starch or dextrin to suppress iron minerals, and amine cationic collectors are used to flotate quartz. Cationic reverse flotation does not require calcium ions to activate quartz and is generally carried out in alkaline media. This is because the inhibition of iron minerals is the best in alkaline media. At the same time, because the surface of quartz and silicate minerals is negatively charged, the positively charged amine collector ions interact with each other.

Cationic collector reverse flotation method uses sodium carbonate to adjust the pH of the slurry to 8-9, and uses starch, dextrin, tannin, etc. to inhibit iron minerals. Flotation of quartz gangue with amine collectors (ether amine is the best and fatty amine second).

2Ore containing hematite and magnetite, because magnetite is not easy to float, the combined process of magnetic separationflotation is commonly used for separation. However, if the gangue is collected by a cationic collector, both hematite and magnetite will remain in the tank to be recovered, simplifying the process.

3If the ore contains iron silicate, when positive flotation is carried out with an anionic collector, the iron silicate will be selected into the concentrate with hematite and reduce the quality of the concentrate. However, if a cationic collector is used for reverse flotation, it will float out together with quartz to improve the iron concentrate grade.

4This method can avoid desliming operations and reduce the loss of iron minerals. This method is suitable for the flotation of high-grade and complex iron ore. At present, the reverse flotation method of cationic collector is often used to further process the iron concentrate of gravity separation and magnetic separation to obtain ultra-pure concentrate.

Prominer has been devoted to mineral processing industry for decades and specializes in mineral upgrading and deep processing. With expertise in the fields of mineral project development, mining, test study, engineering, technological processing.

iron ore industry beneficiation technology

iron ore industry beneficiation technology

Silica content has become a significant problem in iron ore processing in recent years. Lower grade deposits have significant silica content and this restricts the saleability of the beneficiated iron ore product.

Typically, silica can be reduced from 5-7.5% to 2-3% while the iron ore grade is increased from 58-61.5% to 64-65.5% with a recovery in excess of 75%. Using the DEC Flotation column to reduce the silica content of iron ore enables many low to medium grade iron ore deposits extend their economic viability significantly.

ferrexpo orders metso outotec vertimill stirred mills - mining magazine

ferrexpo orders metso outotec vertimill stirred mills - mining magazine

Metso Outotec stated that these vertical grinding mills will be the largest of their kind to be installed in Ukraine, and that once the mills have been installed, Ferrexpo's iron ore beneficiation complex will be the largest VTM installation on the continent.

The company added that the typical value for this type of an order is in the range of 30-40 million (US$35.7-47.6 million), depending on the scope of delivery. The order has been booked in Metso Outotec's second-quarter 2021 orders received.

Vertimill technology is part of Metso Outotec'sPlanet Positiveoffering, which was introduced in March this year. The Planet Positive portfolio focuses on the most environmentally efficient technologies in the company's current portfolio, responding to the sustainability requirements of its customers in the aggregates, mining and metals refining industries.

Metso Outotec said that Vertimill technology provides a low total cost of ownership thanks to its high energy efficiency, reduced media consumption, low installation cost as well as minimal liner wear and maintenance. It is capable of handling feed sizes of up to 6mm and grinding to product sizes of 30m or less. Vertimill is available in standard mill sizes ranging from 11kW to 3,352kW.

Metso Outotec has won several major orders for its Vertimill technology this year, including for Iamgold's Ct gold project in Canada in March, Sandfire Resources' T3 Motheo copper-silver project in Botswana in April, and for Mapa Group's operations in Liberia and Burkina Faso in early June.

Copyright 2000-2021 Aspermont Media Ltd. All rights reserved. Aspermont Media is a company registered in England and Wales. Company No. 08096447. VAT No. 136738101. Aspermont Media, WeWork, 1 Poultry, London, England, EC2R 8EJ.

wet beneficiation of low grade iron ores, or tailings of 35-54% fe grades in the fluidised bed reduction-roasting plant & subsequent pelletisation in the vertical shaft kiln goodrich magma industrial technologies limited

wet beneficiation of low grade iron ores, or tailings of 35-54% fe grades in the fluidised bed reduction-roasting plant & subsequent pelletisation in the vertical shaft kiln goodrich magma industrial technologies limited

GoodRich offers a new technology from China, which can beneficiate low grades of hematite / limonite / goethite ores (including BHQ & BHJ) and also recover the left-over tailings from the conventional beneficiation plants, by converting them into magnetite ores, using the fluidised bed reduction-roasting method. Once the iron ore becomes magnetite, it is much easier to beneficiate & pelletise it.

The efficiency of iron recovery is 90-95% (as against 70-75% in the conventional beneficiation plants) & the left-over Fe in the tailings is only 10-15% (as against 35-45% in the conventional beneficiation plants).

In the process, low grade iron ores are dry-ground, preferably to their liberation size & passed through a fluidized bed roaster. The process uses coal gas for pre-heating & for partial reduction. Hematite / limonite / goethite ores get converted into magnetite ore in 1-10 minutes depending on the size of iron ore, at temperatures of 500-600 degree C. The left-over heat, after reduction, is utilized for 3 stage pre-heating of iron ore.

After being converted into magnetite, the ore is quenched in water & passed through low gauss magnetic separators, to reach 60-65% Fe grades. If the silica content is high, floatation process may also be employed.

Coal consumption is 90 kgs per ton of raw material (60 kgs by way of coal gas for reduction & 30 kgs by way of heat for drying). Power consumption is 40 KWh per ton for dry grinding in the ball mill (or 28 KWh in Raymond mill) and 20 KWh for other processes. The available plant capacities are from 200,000 tons to 1,000,000 tons per year, based on the input. After 50 years of research in this area, China has built the first plant of 200,000 tons per year, which is currently running well.

The apparent disadvantages of the above process are in addition to iron ore, coal is also needed & the capital investment on the beneficiation plant is comparatively high. However, looking at the fact that the recovery is higher& subsequent pelletisation needs lower capital investment and has lower production cost, reduction-roasting technology can be the future of beneficiation & pelletisation in India.

The hematite ore (Fe2O3) is always associated with limonite & goethite ores, which cannot be attracted by high gauss magnetic separators in the conventional beneficiation plants. Such tailings have 30-50% left-over Fe, which is a waste of natural resources. Large quantities of tailings are also environmentally hazardous, as they occupy more space & cause heavy metal contamination in the ground water.

Such tailings can be re-beneficiated, using the fluidised bed reduction-roasting technology & employing both pyro-metallurgical (reduction-roasting) & hydro-metallurgical (low gauss magnetic separation) processes. After re-beneficiation, the secondary tailings will have only 10-15% left-over Fe. These can be sold to the cement factories (when alumina contents are high in the tailings) or used for clay brick making.

Pelletisation is the process of formation of green balls (9-16 mm) by rolling the iron ore powder with a small quantity of binder & hardening the same by heat treatment in oxidizing conditions, up to temperatures of 1,250-1,350C. As a result, binding occurs & sufficient pellet strength is developed. The process includes feed preparation (grinding & pre-drying), mixing with the binder, balling by a disc pelletiser & hardening by drying, pre-heating, firing & cooling. Magnetite ore concentrate gets re-converted into hematite ore in the pelletisation, as it is an oxidation process. The hardening of pellets can be done by the vertical shaft kiln or travelling grate furnace cum rotary kiln.

The vertical shaft kiln needs lower investments &is suitable for small capacities of 100,000 tons to 600,000 tons per year. The thermal efficiency of todays vertical shaft kiln is equal to or better than that of the chain grate furnace cum rotary kiln.

Investments on vertical shaft kiln pellet plants are approximately 50% of the investments on chain grate furnace cum rotary kiln type pellet plants. The cost of making pellets will be only Rs. 750 per ton in the vertical shaft kiln, as against to Rs. 1,500 per ton in the chain grate furnace.

The investment on a 4,00,000 tons per year reduction roasting beneficiation plant, combined with 2,50,000 tons vertical shaft kiln pelletisation plant will be Rs. 75 crores & the estimated turnover is Rs.150 crores. Larger capacity plants of 1,000,000 tons per year of beneficiation & 600,000 tons per year of pelletisation need Rs. 150 crores of investment, with a turnover potential of Rs. 360 crores. The payback periods on these investments are 2-3 years.

newfer | primetals technologies

newfer | primetals technologies

NewFer2019Thomas SchwalmNewFer()NewFer

NewFerNewFerFriedemann PlaulNewFerThomas Schwalm

Primetals Technologies, Limited7,000www.primetals.com

summary of iron ore beneficiation process and technology () - fodamon machinery

summary of iron ore beneficiation process and technology () - fodamon machinery

1. Single weakly magnetic iron oreIt includes hematite, siderite, limonite and hematite (Specularite) Siderite of sedimentary metamorphic, sedimentary, hydrothermal and weathering deposits. This kind of ore dressing production practice is less, because of the variety of minerals, dissemination of a wide range of particle size.

There are many mineral processing methods, and there are two commonly used methods(1). Roasting magnetic separationRoastingmagnetic separationis one of the effective methods to separate fine to fine (< 0.02mm) weakly magnetic iron ore. When the minerals in ore are complex and it is difficult to get good indexes by other methods, magnetization roasting magnetic separation should be used. The reduction roasting of 75 ~ 20 mm block mine kiln has long-term production experience, while the production practice of magnetization roasting furnace for powder ore below 20 mm is less. At present, high intensity magnetic separation, gravity separation,flotationline or combined process are commonly used for separation of fine ore.

(2) Gravity separation, flotation, high intensity magnetic separation or their combined process.Flotation is one of the commonly used methods to separate fine to particulate weakly magnetic iron ore. There are two principle processes of positive flotation and reverse flotation. The former is suitable for quartz hematite ore without easy-floating gangue, and the latter is suitable for ore with easy-floating gangue, and both have production practices.

Gravity separation and high-intensity magnetic separation are mainly used to separate coarse-grained (20-2mm) and medium-sized weakly magnetic iron ores. The gravity separation of coarse-grained and extremely coarse-grained (> 20 mm) ores is commonly used in dense media or jigging; for medium to fine-grained ores, flow membrane gravity separation methods such as spiral concentrator, shaking table, fan-shaped chute and centrifugal concentrator are used; for high-intensity magnetic separation of coarse-grained and medium-sized ores, dry-type induction roller type high-intensity magnetic separator is commonly used; fine-grained ore is used High intensity magnetic separator with temperature induction medium is commonly used. At present, due to the low grade of high-intensity magnetic separation concentrate of fine ore and low processing capacity of gravity separation unit, a combined process of high-intensity magnetic separation and gravity separation is often formed. A large number of qualified tailings are discarded by high-intensity magnetic separation, and then the concentrate is further processed by gravity separation to improve the grade.

2. Weakly magnetic iron ore containing polymetallicThey are mainly hydrothermal and sedimentary hematite or siderite containing phosphorus or sulfide. This kind of ore usually uses gravity separation, flotation, high intensity magnetic separation or its combined process to recover iron minerals, and flotation to recover phosphorus or sulfide.

Hydrothermal apatite bearing hematite and copper bearing pyrite can be flotation. Although the sedimentary oolitic hematite ore containing phosphorus can be separated from iron by flotation, it is difficult to enrich the phosphorus concentrate, and the iron recovery rate is greatly reduced. It can be considered that after removing large particle size gangue, smelting high phosphorus pig iron and recovering phosphate fertilizer from steel slag.The gossan of weathered ore deposit contains nonferrous metals, which is often associated with copper, arsenic, tin and other associated components.

There is no separate mineral, so it is difficult to separate iron from iron by mineral processing. Chlorination roasting and other methods are being studied. There is no single mineral associated with the ore in laterite type nickel chromium cobalt limonite. Roasting ammonia leaching and separation magnetic separation are being studied.

iron ore

iron ore

We know that not all Iron Ore deposits are the same and changing commodities prices are placing higher demands on producers to sweat the assets through process improvements, and increase revenues by converting tailings. Thats why understanding your project objectives and opportunities is our first step in developing solutions that transform your ores into valuable commodities. This holds true for all projects that we are involved in and forms the basis for our ongoing work in developing and delivering innovative and cost effectiveprocess solutionsacross the project lifecyclethat transform your ore bodies into valuable commodities.

To be confident in investing in a project, you need to know that the separation process will work on start-up and throughout the life of the operation. We give you certainty by testing representative samples and analysing the results beyond basic calculations to deliver innovative and cost effective process flowsheets that maximise the grade and recovery of valuable minerals including Magnetite, Hematite and Goethite.

Customers value our 75 years experience in metallurgical testing, whether performed in our extensive metallurgical test laboratory in Australia or, under our direction, in partner test laboratories in the USA, South Africa, Brasil and India.

We routinely test samples as small as 100 grams for characterisation and specific gravity fractionation, through to larger samples up to 2000 kg for bench and pilot scale testing and flowsheet development. We also have the capability to create multi-stage pilot scale circuits to treat bulk samples (80-100 tonnes) for process testing and circuit optimisation and our test equipment includes the latest gravity, electrostatic and magnetic equipment.

High grade concentrates and high recovery of iron ore can be achieved using effective feed preparation systems (typically controlled crushing, screening, milling, classification and slimes removal) in combination with cost effective, efficient metallurgical separation.

Hard rock hematite deposits often require a combination of milling, screening and on occasion, fine classification to prepare a finely sized (-1.0mm), liberated feed for beneficiation by gravity separation. This is typically followed by re-grinding of the tailings to liberate more hematite for further iron unit recovery by magnetic separation.

WHIMS are also often employed to recover fine hematite from spiral circuit tailings. The inclusion of medium intensity magnetic drum separation (MIMS) in combination with jigging may be considered for the beneficiation of the 6-1mm fraction of some friable ore bodies.

Having developed an effective and optimised flowsheet, you need a plant that safely and effectively applies this flowsheet to the ore body to extract high grade iron ore whilst delivering high availability, with low capital and low operational expenditure.

For this reason our equipment is designed and manufactured using the latest technologies and is fully tested in processing operations to ensure maximum performance. This means that when we release new process equipment you can be assured that it will be fit for purpose and cost effective.

A good example is the engineering we completed for ArcelorMittals projects in Canada and Africa. The specific ore required our teams to design a High Capacity wash water spiral which becames the HC33.

As a world leader in process solutions we have delivered some of the largest and most complex projects including design of the worlds largest wet concentrating plant at the ArcelorMittal project, and the design and supply of two tailings treatment beneficiationplants for Arrium in Australia.

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