Purposes: 1, environmental protection and agent acid wastewater, sewage treatment, boiler flue  gas desulfurization. 2, chemical raw materials, additives, additives and stuffing, the leather making, the metallurgy, the coating, the oil lubricant, papermaking, foodstuff, medicine, feed, etc. 3 and  other purposes stone material to help cut agent, soil stabilizer, concrete conditioning agent, plasterboard embedded seam condensation agent, building adhesives, alkyl calcium sulfate,  pharmaceutical ingredients stop acid agents, astringent, water, softener, plastic fibers, etc.