Through the magnetic separation,acidwashing,sieving,reducing bleaching deferrization,the whiteness of product can be improved,and the reaction mechanism and charging system discussed.

• 的产品为研究对象,通过磁选、酸洗、过筛、还原漂白除铁等方式提高产品的烧成白度,并对不同的试验研究和反应机理进行探讨。