Limestone powder processing and grinding technology
Limestone is usually with 92%-93% calcium carbonate. Its common name is bluestone, with block shapes and Mohs'hardness of 3.
Limestone includes quick lime and hydrated lime. Limestone becomes calcium oxide (common name is quick lime) after calcinations. It's usually with bock shapes and used in the industries of water treatment, asphalt modification, desulfuration, construction materials and pharmaceuticals, etc. Quick lime becomes hydrated lime (also named slaked lime) after absorbing moisture or adding water, whose main component is Ca(OH)2. It's mainly used in the industries of waste incineration, environmental protection and pharmaceuticals, etc.
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Limestone is with fine quality and most is with surface expression, so it's not only easy to exploit with low cost, but also easy to process and multipurpose use. So these years, the limestone powder processing industry is becoming more and more popular.
Limestone can be divided into four different sizes by the fineness of the powder:
D95 of 200 mesh: To produce the raw material of calcium chloride anhydrous, sodium dichromate, glass and cement, also building materials and poultry feed, etc.
D99.9 of 325 mesh: Fillers of plastic, wall putty, plywood and paint.
D99 of 325 mesh: To produce the raw material of calcium chloride anhydrous and glass, the white filler of rubber and paint, also construction material.
D99.95 of 400 mesh: Fillers of wire insulation, rubber molded products and asphalt linoleum.
1、To produce cement or calcined lime in construction industry.
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