... speed 4) Low rate of residual oil Activated clay for oil refinery with high gradeThe activated clay is ... matters by effective, such as phosphorus oil,soap and trace metal oil and aflatoxin,pigment,colloid,impurity,dram ... be used to decolorize and refine the edible oil,such as the harmful pigment ed and yellow ... ect.,and Make it become the high-class oil.No.2.For the Mineral OilThe activated bleaching ...