Mica pigment industry started late in China and it is at the primary stage at present, so there are many problems from substrate preparation to mica pigment products. Such as, too small diameter-thickness ratio, low classifying precision, poor pearlescent luster, bad color, poor wettability and dispersibility. It is difficult to use muscovite in China with a large number of iron to produce pigment with high purity and brilliance. The research on.new type of mica Pigments isn't enough. According to the probl...