Calcium carbonate plant is also known as calcium carbonate processing or grinding plant. It is a production line where ground calcium carbonate powder are made mechanically in factories.
Calcium Carbonate Manufacturing Process and Equipment
Calcium carbonate is manufactured in a processing or grinding plant, which uses a variety of raw materials, including limestone, calcite, marble, and dolomite. The manufacturing process involves several steps, including：
1. Material transportation
The raw calcium carbonate ore has just been mined from the mine. The size of the raw materials is relatively large, and the stacking position is relatively simple. It is not recommended to stack in the open air to avoid rainwater and increase the difficulty of subsequent drying and grinding. There is a chain bucket unloader, which is unloaded by the chain bucket. The machine is unloaded into the factory area for storage, fed into the storage hopper above the belt conveyor, into the raw material bin of the batching station, and then fed into the screw feeder by the belt feeder through the elevator, and fed into the calcium carbonate grinding mill.
2. Drying system
In the grinding stage, materials with a humidity of less than 15% do not need to be equipped with a dryer. They can be ground in the grinding mill by inletting hot air. If the humidity exceeds this range, grinding and drying need to be separated, and the materials are sent into the dryer first. Dry and grind.
3. Grinding system
The material is ground in the grinding mill. At the same time, the whole equipment has an overall structure. The grinding roller limit device is adopted to avoid the severe vibration of the mill due to the lack of material. The oxygen content in the grinding mill is reduced, and the explosion suppression performance is excellent; the stability and production capacity of the product are greatly improved.
4. Finished product storage
The fully ground material should be collected by a pulse collector, and sent to the finished product tank by a blower air transport equipment for storage.
How to choose calcium carbonate grinding equipment
In calcium carbonate processing plant, grinding mill is the core equipment to process raw calcium carbonate into powder. The commonly used calcium carbonate fineness is 0-3mm, 80-425mesh and 1000-3000mesh. How to choose suitable powder mill machine? Let's talk about below machines's features.
Raymond mill is a high-efficiency closed-circuit pulverizing equipment for processing and grinding non-metallic minerals. It is vertical structure with small coverage. From raw material rough processing to transportation to powder and final packaging, it can be an independent powder production system. The fineness of the finished product can be adjusted between 425 mesh and 100 mesh (0.613 mm -0.044 mm) to meet different requirements through adjusting the analyzer and the fan. The production capacity of a single machine is 1-35t/h depending on the model.
HGM mill is short of three ring medium-speed micro-powder grinding mill. It is the equipment specializing in producing fine and superfine powder of non-inflammable, non-explosive and brittle materials with Mohs’s hardness under six. The finished powder size could reach 500-3000mesh. And capacity is 0.5-6 ton per hour depending on the model.
Vertical roller mill is also a closed-circuit pulverizing equipment. It integrates to crush, dry, grind and classifiy with high production efficiency. It can grind the massive, granular and powdery materials into fine powder. A vertical roller mill is based on the principle of material bed to grinding materials, which require less energy consumption and promote grinding efficiency. Because the vertical roller mill has a special vertical design, the speed of cutting can be promoted, so that, the working efficiency of the whole vertical cement mill will be high and stable. The final powder size is 70-325mesh, capacity is 10-100 ton / hour.
A ball mill is a cylindrical grinder that uses balls to grind and blend materials into a fine powder. The material to be ground is placed in the mill, along with grinding media such as steel balls, high alumina balls, pebbles, or bearings. The mill then rotates on its axis, causing the grinding media to hit and break down the material. The final product's size depends on the mill's rotation speed, the grinding media's size and number, and the material being ground. The final powder size range is from 30-5000mesh. To get required size, the extra air classifier and dust collector is a must.
Calcium carbonate application
As we all know, calcium carbonate whether it is heavy calcium carbonate (calcium carbonate for short) or light calcium carbonate (calcium for short) are excellent fillers and performance improvers, are widely used in plastics, paper, paint, rubber, feed, daily-use chemical industry, etc. Especially in the plastic industry, calcium carbonate has become the choice of plastic processing industry to use a large number of more widely used powder filler, which brings great business opportunities for the calcium carbonate industry due to its many advantages, such as low price, convenient use and few side effects.
We introduce you the following is the common application of heavy calcium carbonate powder:
1,200 mesh or less( <74 micron): Can be used for various feed additives.
2,250 mesh to 300 mesh(63 -47 micron): for plastics plants, paint factory, rubber factory, inside and outside the wall paint, waterproof materials, whiteness 80-90.
3,350 mesh to 400 mesh(40-38micron): used for pinch, pipes, chemicals, etc., whiteness above 80-93 degrees.
4,400 mesh to 600 mesh(38-25micron): can be used for ointment paste, soap, whiteness above 80-94 degrees.
5,800 mesh(15 micron): rubber, plastic, cable, PVC whiteness 90-97.
6,1250 mesh(10 micron): PVC, PE, paint, paint products, paper surface coating (whiteness 90-97), paper primer.
The current use of more heavy calcium by roughly divided into three categories by finess: 400 mesh, 800 mesh and 1250 mesh. In plastic industry , it is a larger amount of 400 mesh, but with the development of grinding technology and heavy calcium powder application expanding, now the amount of faster growth is the purpose of 1250 superfine heavy calcium powder.
Conclusion
In mining machinery industry, Series of calcium carbonate mill equipment is including YGM series Raymond mill( for 325 mesh around) ,MTW european version mill ( for 425 mesh around), HGM Three-ring Micro-powder mill(for 3000 mesh around). These calcium carbonate mill equipment is high degree of automation, high efficiency powder classifying, wear-resistant parts in long life span, reduce production cost. They could meet different finess of calcium carbonate processing needs.
In the processing of calcium carbonate powder, due to the different application industries of the finished products, the production capacity of the production line and the fineness of the finished products are different, so the grinding equipment used in the calcium carbonate processing plant is different. When you begin to calcium carbonate powder production bussiness and in need of this essential mineral for your business or projects, contact us today for exceptional.
2024-11-15
86-15093113821
86-15093113821
