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calcium carbonate grinding machine is suitable for limestone production

Posted: 2019-11-18

For the main application fields of limestone, the European version of the calcium carbonate grinding machine, HGM three-ring superfine calcium carboante grinding mill, CLUM superfine vertical grinding milland calcium carbonte Raymond mill produced by Shanghai Clirik Machinery Co., Ltd. They can produce the calcium carbonate powder fineness from 80 mesh to 3000 mesh. welcome to consult online.

Calcium carbonate is widely used and has a good market prospect. The natural ore mainly used for the production of calcium carbonate is limestone, but because of the wide distribution of limestone, there is no advantage of local resources, and it is necessary to gain market share by strength and other advantages. Therefore, in the face of this resource, when developing applications, we should carefully choose and take short processes, so that it is possible to use simple methods, a realistic market, and improve market competitiveness with low cost and high quality. The development status of deep processing of integrated calcium carbonate products introduces several main uses of limestone mines.

Application

(1) Casting sand for the production of machinery. The grit produced by limestone has a particle size of 28-75 mesh. This type of sand has better performance than quartz sand, has good collapsibility, is easy to fall sand, improves the surface quality of castings, increases the surface finish of castings, and basically eliminates the hazards of workers' silicosis. . According to statistics, only major steel companies have to purchase tens of thousands of tons of foundry sand every year, which is a potential market for the limestone mine in the metallurgical industry.

(2) Used in industrial building materials and other industries. Limestone is ground to 100-200 mesh, which can be directly used to produce powder for industrial building materials such as double fly powder and putty powder. It is also a good raw material in the construction of mixing stations and highways. The limestone-grinding coating greatly improves the thixotropy of the system, and can significantly improve the adhesion of the coating, the scrub resistance, the stain resistance, the strength and the surface finish, and has a good anti-settling effect. Partial replacement of titanium dioxide, reducing costs.

(3) Production of desulfurization absorbent. Limestone is ground to 200-325 mesh instead of raw lime or slaked lime. It is mixed with water in the absorption tower to form a slurry. The absorption slurry is mixed with the flue gas. The sulfur dioxide in the flue gas is mixed with the calcium carbonate in the slurry and the air entrained. The chemical reaction is removed and the final reaction product is gypsum. The flue gas after desulfurization is heated and heated to be discharged into the chimney. The process equipment is mature, the desulfurization efficiency is high, and the application range is wide.

(4) Used as a filler in the production process of plastics, coatings, etc. Natural calcium carbonate minerals used as raw materials for such products, ie limestone, require CaCO3 (dry basis): 9810% for superior products, 9610% for first-class products, 9410% for second-class products, Fe2O3 ≤ 011%, Mn ≤ 0102%, Cu ≤ 01001%, whiteness above 90. Further, fine ore having an average particle diameter of 400 to 800 mesh is used as a coating filler, 800-1250 mesh is used as a filler for plastics, rubber, and paper, and 2500 mesh is activated for use as an ink filler.

Any question about limestone production and calcium carboante grinding machines, welcome to contact us freely :+86-13917147829 (WhatsApp and Wechat avilable)

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calcium carbonate grinding machine is suitable for limestone production

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