We offer a series of equipment to form an automated production line for cement plants, as well as offer a series of project services, including process design, civil construction, complete sets of equipment, installation and commissioning, and technical assistance.
Using the clinker production line, limestone raw material can be crushed, homogenized, dried, preheated and decomposed, sintered, cooled, ground, processed into cement finished product, then transported and packaged automatically. This line is also environmentally friendly and ensures a dust free process.
Depending on the output, we can provide our customers with clinker line production equipment in a range of capacities, including 1000t/d,1500t/d,2500t/d,3000t/d,4500t/d,5000t/d,6000t/d,4500t/d, and10,000t/d.
Equipment: Vertical Mill Capacity: 360-400t/h Material Feed Moisture Content: 6% Final Moisture Content: 0.5% Material Feed Size: 100mm Final Fitness: R80m < 12%
The raw material homogenizing silo is equipped with an 18m55m continuous multiple flows CP homogenization silo with an effective storage capacity of 9000t, storage life of 2.25d and power consumption of 0.3kW/h per ton of raw material. In order to achieve homogenization and stabilize the flow of the discharged materials, key valves on the base plate inflation and discharge system are produced by the German company BMH. In order to prevent water penetration and water leakage from affecting normal operation, the silo top is made of steel.
Equipment 1: high temperature fan Rated Power: 1250 kW Gas Treatment Capacity: 420000480000 m3/h Equipment 2: kiln tail dust catcher (Bag Filter) Airflow Capacity: 450000m3/h Emission Concentration: 10mg/m3
Sinoma-Liyang Heavy Machinery Co., Ltd. (SINOMALY) Add.: No.11, Binhe Road, Tianmu Lake Industrial Park, Liyang, Jiangsu, China Contact Person: Mr. Chen / Ms. Qian Tel.: (Mr. Chen) (Ms. Qian) Fax: E-mail: [email protected]
What is Portland cement? Portland cement derives its name from Portland, England, in many cases, also called silicate cement. It is a kind of hydraulic cementing material made of calcium silicate cement clinker, limestone or blast furnace slag (less than 5%), and an appropriate amount of gypsum. At present, Portland cement has been widely used in residential construction, traffic construction, large-scale water conservancy construction, and civil engineering, etc.
For different applications, Portland cement is classified into various types. The ordinary Portland cement (OPC) refers to Portland cement containing 5 ~ 20% of active mixing material. The Portland cement with a higher proportion of admixture (more than 20%) usually named by the admixture, such as the Portland pozzolan cement, Portland fly-ash cement, Portland slag cement, etc.
The main components of Portland cement include calcium oxide (CaO), silicon dioxide (SiO2), aluminum oxide (Al2O3), and iron oxide (Fe2O3). They account for more than 95% of the total cement composition. In addition, there are other oxides like magnesium oxide (MgO), sulfur trioxide (SO3), titanium dioxide (TiO2), phosphorus pentoxide (P2O5), potassium oxide (K2O), sodium oxide (Na2O), etc., accounting for less than 5% of the total amount. These components that make up raw materials react at high temperatures and finally form compounds tricalcium silicate, dicalcium silicate, tricalcium aluminate, and tetracalcium aluminoferrite. The tricalcium silicate and dicalcium silicate determine the strength of Portland cement, in which the tricalcium silicate mostly affects the early strength. Tricalcium aluminate causes the initial setting of Portland cement.
Portland cement has a high setting and hardening speed, high strength, especially its early strength growth rate. It is suitable for high strength concrete structures, prestressed concrete engineering, and projects with high early strength requirements.
The rich content of carbon disulfide in Portland cement leads to its high heat release, high release speed, and high strength in the early stage. If it is used in winter construction, freezing damage can be avoided.
Portland cement has the characteristic of strong alkalinity, high density, and strong carbonation resistance. When the steel bar is buried in an alkaline environment, a layer of gray passivation film will be formed on the surface, which can keep the steel bar from rusting for decades. Therefore, Portland cement is especially suitable for important reinforced concrete structures and prestressed concrete works.
A large amount of calcium silicate hydrate will be produced during the hardening process of Portland cement. As a result, cement stone has high density, less free moisture, and is not easy to produce dry shrinkage cracks. Therefore, Portland cement can be used in concrete engineering in a dry environment.
Portland cement mixture is not easy to bleed, and the density of hardened cement stone is large, so the frost resistance is better than other general cement. It is suitable for concrete engineering under repeated freeze-thaw action in severe cold areas.
Portland cement manufacturing process can be divided into 6 steps: raw material crushing, pre-homogenization, fine grinding, clinker production, cement grinding, cement packing, etc. In these processes, we need the assistance of different kinds of cement equipment, such as cement kilns, cement mills, and cement crushers. The specific manufacturing processes are as follow:
After cement raw materials are mined, most of them should be crushed into small particle sizes. Coal, the main fuel for cement production, also needs to be broken in advance. In this step, all of them should be crushed by special crushing mills and then be transported to the pre-homogenization yard by belt conveyor.
The pre-homogenization refers to the preliminary homogenization of cement raw materials and fuel raw materials through the application of scientific stacking and reclaiming technology in the process of material storing and taking. In this step, the stacker is applied to pre-homogenize and stack raw materials in layers. Then the scraper reclaimer takes out raw materials and sends them to the batching station helped by the belt conveyor.
After the raw material batching is completed, cement raw meals (calcareous raw materials, clayey raw materials, and a small amount of corrective materials) need to be further ground by raw mills to realize a certain fineness, appropriate chemical composition, and uniform structure so that they can meet the calcination requirements of various cement kilns. The frequently used raw mills include cement ball mill, cement vertical mill, Raymond mill, etc. The air-swept coal mill is used for coal grinding.
Clinker production is the most critical stage in the cement manufacturing process. At present, the new dry process clinker production technology is the most advanced clinker production method. It has the advantages of high efficiency, energy-saving, and high production quality. By this production method, the raw meal powder will be pre decomposed in cyclone preheater and calciner firstly, and then enter cement kiln to be calcined under high temperature. After that, the calcined clinker will be cooled by the grate cooler and stored in the clinker warehouse.
After calcination, the clinker needs to be mixed with gypsum and additives to meet the requirements of different properties. Then, they will be ground by cement mills to appropriate particle size, forming a certain particle gradation, which increases the hydration area and accelerates the hydration speed.
Cement packing is the last step in the cement manufacturing process. After the cement powder is discharged from the unloading system at the bottom of cement silos, they will be sent into the cement packaging machine by the bucket elevator. In the packing machine, they are packaged into bags and then be transported to different sales markets.
AGICO Group is an integrative enterprise group. It is a Chinese company that specialized in manufacturing and exporting cement plants and cement equipment, providing the turnkey project from project design, equipment installation and equipment commissioning to equipment maintenance.
Cement clinker is usually ground using a cement ball mill. This is essentially a large rotating drum containing grinding media - normally steel balls. As the drum rotates, the motion of the balls crushes the clinker. The drum rotates approximately once every couple of seconds.
Grinding systems are either 'open circuit' or 'closed circuit'. In an open circuit system, the feed rate of incoming clinker is adjusted to achieve the desired fineness of the product. In a closed circuit system, coarse particles are separated from the finer product and returned for further grinding.
This cement ball mill is mainly used in grinding cement finished products and raw materials and also suited to metallurgical, chemical, electricity etc. and other industrial mining enterprises. It could also be used to grind various ore materials and materials that is grindability.
Cement mill is a simplified level, out of the hollow shaft and grinding materials and other components, simplified for the long cylinder, cylinder equipped with a grinding, cylinder of steel plate, with steel liner and simplified fixed, grinding media generally steel ball, according to different tube diameters and a certain percentage of load in, section steel grinding media can also be used.
When the cylinder rotates, the material and the ball under the action of centrifugal force, close to the liner, due to the role of friction, the material and the ball into the cylinder a certain height, the gravity, the ball and materials while whereabouts of the ball crushing the material, while the relative liner material sliding friction occurs, the resulting abrasive material, grinding the material so as to achieve the purpose.
Material by the feeding device into the compound air evenly into the mill screw shaft first warehouse, the warehouse there are ladder liner or corrugated liner, built with different specifications steel ball, rotating cylinder produces centrifugal force to the ball a certain height After the fall, have severe impact on the material and abrasive. Coarse material in the first position to reach, after single-compartment plate into the second warehouse, the warehouse lined with flat lining, there are balls, the material to further grinding. Powder discharged through the discharge grate plate, complete the grinding operation.
Cylinder in the rotary process, the grinding phenomenon has slipped in the fall to the process of abrasive material in order to effectively use abrasive effect on the larger particle size is generally twenty head when finely ground, the body tube mill body with the diaphragm plate separated Sec, it becomes two-position, materials into the first position when the ball was crushed, the material into the second position when the end of the material for grinding steel, finely ground material passing from the discharge end of the discharge hollow shaft, the small particles of feed material for pulverized, as in II slag sand, coarse fly ash, mill shell could have no partitions, a single-chamber tube mill, grinding the volume of steel can also be segment.
Steel slag vertical roller mill-important equipment in the steel slag grinding plant As is known to all, in the industrial industry, steel slag is a solid waste that is poorly utilized by steel companies. Except for extracting some of the metal iron, most of them are not effectively utilized. Most steel plant have not fully utilized steel slag after fully selecting iron. They contain higher divalent metal ions than cement clinker and have a large space for utilization. A large amount of residual micron-sized metal iron particles can cause magnetic agglomeration and magnetic adhesion in the steel slag grinding plant, making ultrafine grinding impossible. Therefore, in order to carry out ultrafine grinding of the steel slag, the exposed metal iron particles must be removed in time during the grinding process. GRMS steel slag vertical roller mill is a new type of ultra-fine vertical mill designed and developed by Xinxiang Great Wall after decades. It uses a large amount of external circulation and effectively removes iron in the outer circulation. It can choose about 1.5% iron in the tailings. At the same time, the steel slag powder produced is high in fineness, and the specific surface area of the finished product can reach 450~500 m2/kg or more, and the activity is good, and it is suitable as cement active mixed material and concrete admixture. Regardless of the fineness of the finished product, power consumption or investment cost, the steel slag vertical mill of Xinxiang Great Wall can meet the requirements of users.
Slag mill is a kind of equipment used to grind the slag into powder particles. The technical that uses the tube mill on the production of slag has been very mature. The slag produced can be used as concrete admixture, reducing the project costs significantly and enhanced the compressive strength, tensile strength, shear strength and bending strength of the concrete.The optimal performance of ball mills (slag ball mill) is the key to a successful plant operation.
The energy saving ball mill is a horizontal cylindrical rotating device, which has two cabins. It is energy saving grate ball mill and the outside runs along the gear. The materials enter the first cabin of the mill spirally and evenly through the feeding apparatus and hollow shaft. In the first cabin, there is stepped liner or corrugated liner, and steel balls with different specifications. The centrifugal force generating from the rotation of the cylinder brings steel balls to a certain height, and then the balls fall, thumping and grinding the materials. After coarse grinding in the first cabin, the materials enter the second cabin by single-wall partition. There is flat liner and steel balls in the second cabin, where the materials are grinded further. Finally, the powder is discharged through discharge grate and the grinding operation is finished.
The ball mill mainly consists of feeding part, discharging part, rotary part, drive (reducer, small driving gear, motor, electronic control) etc. The hollow shaft adopts steel castings and the lining can be replaced. The rotary gear is processed with casting hobbing. There is wear-resistant liner in the cylinder and have strong wear resistance. The machine runs stably and has reliable performance.
Pre-sales Service: The wide product range enables us to provide our customers with stand-alone machines or complete processing plants. Based on our customers request and budget, our experts make efficient, reliable solutions. Following customers order we produce strictly, whats more, before placing the order every customer has the chance to visit XinXiang Great Wall (Chaeng) working machines or complete plant in the site. To ease the trip for every visitor to China, in particular the first-time visitor, we provide FOR FREE all relevant visitor-friendly services including invitation letter preparation, hotel reservation, airport pick-up, incity transportation, and sightseeing guide, etc. After-sales Service: Experienced technicians guidance is available on the phone, and on the internet. One or more engineers will be dispatched to the quarry site to help install the customers plants. Necessary training about machine daily maintenance to local workers is provided also. After-Sales department is made of well-trained employees and installation engineers, the installation engineers are special and professional members of XinXiang Great Wall (Chaeng), they are now strategically located home and abroad, working for our customers.
Pre-sales Service: The wide product range enables us to provide our customers with stand-alone machines or complete processing plants. Based on our customers request and budget, our experts make efficient, reliable solutions. Following customers order we produce strictly, whats more, before placing the order every customer has the chance to visit XinXiang Great Wall (Chaeng) working machines or complete plant in the site.
To ease the trip for every visitor to China, in particular the first-time visitor, we provide FOR FREE all relevant visitor-friendly services including invitation letter preparation, hotel reservation, airport pick-up, incity transportation, and sightseeing guide, etc.
After-sales Service: Experienced technicians guidance is available on the phone, and on the internet. One or more engineers will be dispatched to the quarry site to help install the customers plants. Necessary training about machine daily maintenance to local workers is provided also.
After-Sales department is made of well-trained employees and installation engineers, the installation engineers are special and professional members of XinXiang Great Wall (Chaeng), they are now strategically located home and abroad, working for our customers.Get in Touch with Mechanic