Kaolinite process methods
Kaolin is both dry- and wet-processed. The dry process is simpler and produces a lower quality product than the wet process. Dry-processed kaolin is used mainly in the rubber industry, and to a lesser extent, for paper filling and to produce fiberglass and sanitary ware. Wet-processed kaolin is used extensively in the paper manufacturing industry.
In the dry process, the raw material is crushed to the desired size, dried in rotary dryers, pulverized and air-floated to remove most of the coarse grit. Wet processing of kaolin begins with blunging to produce a slurry, which then is fractionated into coarse and fine fractions using centrifuges, hydrocyclones, or hydroseparators. At this step in the process, various chemical methods, such as bleaching, and physical and magnetic methods, may be used to refine the material.
Chemical processing includes leaching with sulfuric acid, followed by the addition of a strong reducing agent such as hydrosulfite. Before drying, the slurry is filtered and dewatered by means of a filter press, centrifuge, rotary vacuum filter, or tube filter. The filtered dewatered slurry material may be shipped or further processed by drying in apron, rotary, or spray dryers. Following the drying step, the kaolin may be calcined for use as filler or refractory material. Multiple hearth furnaces are most often used to calcine kaolin. Flash and rotary calciners also are used.
Kaolinite process equipment
Kaolin Crusher：kaolin crusher has excellent performance in kaolin crushing. With the exception that, additionally, it does well in areas like metallurgy, building materials, chemicals, mining minerals etc.
Kaolin mill：Kaolin Milling, sometimes also recognized as kaolin fine grinding, kaolin pulverising or comminution, is the procedure of decreasing kaolin to a powder of fine or extremely fine size. It really is distinct from crushing or granulation, which entails size reduction to a rock, pebble or grain size. Milling is utilized to create many different supplies which either have end utilizes themselves or are raw materials or additives utilized within the manufacture of other goods.