非金属矿工业发展水平的一个重要标志,就是深加工,选矿是其中之一。某地粘土矿为含蒙脱石的高岭土矿,粘土原矿质量差,不能直接使用。作为电瓷原料,一般要求高岭土中Al_2O_3含量要>33％,Fe_2O_3含量应<1.5％,TiO_2含量应<0.5％;作为橡胶填料,高岭土能提高橡胶制品的机械强度,增加耐磨性和化学稳定性,延缓橡胶的硬化时间,还可以降低橡胶的成本。橡胶工业要求高岭土中Al_2O_3含量在28—34％,高岭土对 An important symbol of the development level of non-metallic mining industry is deep processing, beneficiation is one of them. A certain clay mine is a montmorillonite-containing kaolin mine. The quality of clay ore is poor and can not be used directly. As the raw material for electric porcelain, the content of Al_2O_3 in kaolin should be> 33%, the content of Fe_2O_3 should be <1.5% and the content of TiO_2 should be <0.5%. As a filler, kaolin can improve the mechanical strength of rubber products and increase the wear resistance and chemical stability , Delay the rubber hardening time, but also can reduce the cost of rubber. Rubber industry requires kaolin Al 2 O 3 content of 28-34%, kaolin pairs