The production of desulfurization absorbent. The limestone broken to 0 2mm, the mm + 2 < 5%, 0 ~ 0.45 mm > 50% powder to replace lime or lime, water absorption tower in mixing slurry, the slurry mixed with the smoke exposure, the sulfur dioxide gas and slurry of calcium carbonate and drum into the air the chemical reaction is removed, the final reaction product gypsum. The flue gas desulfurization by heating up the chimney. The equipment is mature, high desulfurization efficiency, wide range of application. At present, Guizhou aluminum limestone mine has built a limestone desulfurization agent production line, its benefits are very promising.
Production machinery in foundry sand. Sand particle size of limestone production ranged from 28 to 75, the sand has better performance than quartz sand, good collapsibility, easy shakeout, improve the surface quality of the casting, increase casting surface finish, and basically eliminate the harm to the staff of silicosis. According to the statistics major the Steel Corp each year to outsourcing foundry sand tens of thousands of tons, the metallurgical industry limestone mine is a potential market.
As a process for the production of plastic coating, the filler. Natural calcium carbonate mineral as the raw material, the requirements of limestone containing CaCO3 (dry base): grade 9810%, grade 9610%, two, 9410%, Fe2O3 = 011,%, Mn% = 0102, Cu = 01001%, whiteness by 90. In addition, the average particle size of 10 ~ 15 m of the powder coating of mine for filler, - 10 m used for plastic, rubber, paper packing, - 5 m after activation treatment after the ink filling material.
The production of high-grade paper with coating grade calcium carbonate products. This type of fine, high added value and superfine active calcium carbonate is widely used in papermaking process, after crushing the general size - 2 m = 90% for sizing paper making process; - 2 m diameter greater than or equal to 50% is mainly used to coated paper packing.
Is the most common portland cement production. General limestone crushing, grinding after all can reach the requirement of cement materials. With the opening of the national economic construction, accelerate, cement industry is developing rapidly, it is estimated the next 20 years or so only the cement industry will be a demand for limestone 290
