高炉法生产工艺对原料粒度有一定的限制 ,一般要求在 2 cm以上 ,对于粒度小于 2 cm的原料 ,如不采取措施进行处理是不能直接入炉生产的。磷矿石在开采、转运、堆放、使用过程中将产生一定量的粉末 ,从磷矿山运出至投入高炉进行生产 ,所产生粒度小于 2 cm的粉末约占磷矿石总量的 Blast furnace production process has some restrictions on the particle size of raw materials, generally require more than 2 cm, for the particle size of less than 2 cm of raw materials, such as without taking measures to deal with can not be directly into the furnace production. Phosphate rock in the mining, transport, stacking, the use of the process will produce a certain amount of powder, transported from the phosphate rock to put into the blast furnace for production, the resulting particle size less than 2 cm powder accounts for the total amount of phosphate rock