White mud, also known as kaolin, is a non-metallic mineral, and it is a kind of clay and clay rock mainly composed of kaolinite clay minerals. Because it is white and delicate, it is also called Baiyun soil. Named after Gaoling Village, Jingdezhen, Jiangxi Province.
Extended data;
Kaolin is a common nonmetallic mineral in nature. In the past, it was generally used to produce ceramics, refractories and a small amount of fillers mixed with plastics and rubber.
With the development of national economy, people pay more and more attention to the deep processing of kaolin, because it can not only obtain new materials with special properties, but also improve economic benefits.
That is, after elutriation, grinding, toughness and drying, kaolin is further heated, roasted and dehydrated to turn it into metakaolin, which can be used as filler in plastic cable department to improve the insulation performance of cable sheath. Commonly used rubber fillers for shoes mainly include organic fillers and inorganic fillers. The former includes reclaimed rubber and reclaimed materials.
The latter includes silica, calcium carbonate, titanium dioxide, magnesium carbonate, magnesium oxide, carbon black and zinc oxide powder. Kaolin is a new filler for rubber products developed in recent years.
Reference source; Baidu encyclopedia-kaolin