沸腾焙烧,是当今应用很广的物料焙烧技术,它具有设备简单,处理能力大,气—固相热和质的交换迅速,炉内温度均匀,焙砂质量稳定,易于实现操作过程的自动控制等一系列优点。 在火法炼锌或用直接法制取高级氧化锌时,除锌精矿的脱硫外,都希望在焙烧过程中尽量将铅、镉等杂质除去。为此,在国外 Boiling roasting is a widely used material roasting technology in today’s world. It has the advantages of simple equipment, large processing capacity, rapid exchange of gas-solid phase heat and mass, uniform temperature in the furnace, stable quality of roaster and easy automatic control of the operation process And a series of advantages. In the fire of zinc or zinc directly by the direct access to law, in addition to zinc concentrate desulfurization, all hope that the roasting process to remove lead, cadmium and other impurities. To this end, in foreign countries