CaCO3 is in the construction industry, or as a construction material or limestone aggregate for roadbuilding or as a component of cement or do the starting materials for the preparation of building lime by burning in the oven. However, because the weather is mainly caused by acid rain, rock chalk powder CaCO3 (limestone form) is no longer used for the purpose of building on its own, and only as a material/construction material itself.Stone powder skin Bot is also used in the purification of iron from iron ore in a blast furnace. Carbonate is heated in place to give calcium oxide, forming slag with various impurities present, and carved out of pure iron.In the oil industry, rock chalk powder CaCO3 is added to drilling fluids as a picture-North Bridge and filtercake sealing agent; It is also a type of material importance to increase the density of drilling fluids to control downhole pressures. BOT skins are added to the pool, such as a Ph correction for maintaining alkalinity and offset the acidic properties of the disinfectant agent.It is also used as a raw material in the refined sugar from beets; It is heated in the furnace with coal to produce calcium oxide and carbon dioxide. This was later burned lime slaked lime in fresh water to produce a calcium hydroxide suspension for precipitation of the impurities in the water in carbonatation.
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