Lime: As in the naturally occurring presence of porous limestone layer having poor performance and heat transfer characteristics, when the temperature reaches 1250 ~ 1350 ℃ desulfurization limestone quotes, limestone surface will produce over-burning, shrink and crack desulfurization limestone manufacturers, so that CO2 can not be sufficiently separated. Meanwhile, the high temperature also allows impurities slagging rate increases. Therefore, the limestone particle size selection, the impact on the lime burning is very large. Lime deep processing: soda ash (Na2CO3) calcium chloride method. Calcium chloride is added in sodium carbonate aqueous solution desulfurization quality limestone, calcium carbonate precipitation can be generated. Alkaline: The production of caustic soda (NaOH) process, a byproduct obtained PCC. Soda lime added to the aqueous solution to generate calcium carbonate precipitate, and also get the caustic soda solution, and finally precipitate calcium carbonate by dehydration, drying and grinding it to obtain PCC.