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What color is limestone in general?

What color is limestone in general?

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Using pure hydrated lime and chlorine bleaching of reaction. Made of calcium chloride, calcium nitrate, calcium sulfate and calcium salt by important chemical processing of limestone. To remove water of lime used as temporary rigid, water softener. Processing Limestone burn into pure powdered calcium carbonate filler for rubber, plastics, paper, toothpaste, cosmetics etc. made of lime and caustic soda lime, used as a CO2 absorbent. Lime as desiccant and disinfectant. Agriculture, with quick lime sulfur Bordeaux mixture, and other pesticides. Soil shoushihui can neutralize the acidity of soil, improve soil structure, supply plants calcium. Brush with lime slurry trunk, can protect the trees.
The main components of the lime is CaO, the general is massive, pure white, containing impurities as a light gray or yellow. Lime to absorb moisture or water will become lime, lime is slaked lime, it is the main component of Ca (OH) 2. hydrated lime deployment into lime and lime plaster, lime mortar, used as coating materials and tile adhesive. Cement limestone and clay is mixed by high temperature calcination. The glass is composed of limestone, quartz sand, soda ash and other mixed by high melting. Iron with limestone as flux, remove the gangue with lime slag materials. Do steelmaking, removal of sulfur phosphorus and other harmful impurities. Calcium carbide (mostly CaC2) is lime and coke reaction in the furnace. Soda ash with limestone, salt, ammonia and other materials through multi-step reaction process (Solvay method). Using lime soda and caustic soda into the reaction system ( Caustic method)
Limestone is the main raw material in the production of quicklime. Carbon dioxide (CO2) to clarify lime (CaOH2) becomes muddy. Lime and limestone used as building materials, it is also an important raw material in many industries. The limestone can be directly processed into stone and fire into lime. Lime raw lime and hydrated lime.

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