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Chalk is composed mostly of calcium carbonate with minor amounts of silt and clay. It is normally formed underwater, commonly on the sea bed, then consolidated and compressed during diagenesis into the form commonly seen today. During diagenesis silica accumulates to form chert or flint nodules within the carbonate rock. Chalk is used to make quicklime and slaked lime, mainly used as lime mortar in buildings. The traditional uses of chalk have in some cases been replaced by other substances, although the word "chalk" is often still applied to the usual replacements.
Chalk mill machine, mineral mill:
1) High capacity
2) Low consumption
3) Finished fineness adjustable
Detailed Product Description about Chalk mill machine, mineral mill
Chalk mill machine, mineral mill is mainly applied to grind non-inflammable, non-explosive and brittle materials with Mohs’ hardness under six. Such as calcite, chalk, limestone, dolomite, kaolin, gypsum, and talc etc, totally more than 100 kinds of materials. Product fineness can be controlled between 300~3000 mesh (47~5 micron) 
Comparable with ball mill, Chalk mill machine, mineral mill has features of low cost, high capacity, easy operation; Comparable with Raymond mill for coarse powder up to 325 meshes, it can produce fine powders between 47 and 5 microns (300 to 3000 meshes)
Performance and features of Chalk mill machine, mineral mill
1. High efficiency
Under the same final size and power, the product capacity of micro powder mill machine, mineral mill is twice than jet mill and agitation mill.
2. Long lifetime of wearing parts
The roller and ring are made of special material, which improve the grinding efficiency a lot. For same material and final size, the lifetime of its wearing parts can reach to more than one year, about 2-5 times as long as that of vertical shaft impact crusher and turbo-mill. Especially when handling calcium carbonate and calcite, the lifetime can reach 2-5 years.
3. High safety and reliability
There are no rolling bearings and bolts in grinding cavity, so problems caused by bolts shedding or wear of bearings and seal components will never happen.
4. High fineness of products
The product fineness can reach D97≤5μm.
5. Environment friendly
The application of DMC-120 pulse dust collector and muffler reduce the pollution and noise of the dust, which has reached national environment protection standard
Production Line Configuration of Chalk mill machine, mineral mill
The whole set HGM Chalk mill machine, mineral mill consists of  hammer crusher, bucket elevator, storage hopper, vibrating feeder, main unit, inverter classifier, cyclone collector, pulse deduster system, high pressure positive blower, air compressors and electrical control systems
Should you have any questions, please do not hesitate to contact us:
Contact person: Cherry. Zhao
Tel: 0086-21-20236178
E-mail: clirik_grinder@163.com;clirik@grinding-mill.in
Address: No.19 Fuqing Road, Pudong New Area, Shanghai 201201, China.
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