Calcined Kaolin

1) Pvc cable material filler low temperature calcination of hydroxyl group kaolin is an indispensable electrical insulation filler in PVC cable material, which can improve the PVC volume resistivity. Calcined kaolin with different chemical compositions also have different effects on the electrical properties of cables. This is because the chemical composition of calcined kaolin is Si and Al, so it can be considered that the important factors affecting the electrical performance of cable materials are determined by the content of silicon and aluminum. The higher the silicon-aluminum ratio of kaolin, that is, the higher the content of Al2O3, the more calcined kaolin can improve the electrical insulation performance of cable material. (2) After the dehydration of papermaking filler and coating kaolin, the products further calcined at about 950 ° C are whiter and brighter than dehydroxylinite, and can or completely replace titanium dioxide as a filler for paper, which not only reduces cost, but also has better performance. (3) Due to the structural water in the calcined kaolin crystal is escaped, a large number of pores are generated between the particles and the particles, so that the crystal structure is changed, the kaolin particles are hardened, and the shape is irregular, and the interior is not easy to accumulate . Since the pores are filled with air, the coating is opaque. (4) Synthetic 4A zeolite 4A zeolite can be used as a detergent in synthetic detergent Chemicalbook, instead of sodium tripolyphosphate, the production of phosphorus-free detergent to reduce phosphorus pollution to the environment. The biggest advantages of 4A zeolite are: a wide range of raw materials, low cost, cheap price, easy control of the production process, and stable performance of the product. (5) The manufacture of crystalline aluminum chloride and polyaluminum chloride is used as a catalyst for the organic synthesis of petroleum industry, and used to treat lubricating oil and manufacture of glyphosphine, etc. Polyalumin chloride is a new type of water purification agent, used to purify drinking water, can also be used as a treatment agent for various industrial wastewater, with fast flocculation, less insoluble matter, good purification effect, less dosage, low cost and other advantages. (6) Refractory material calcined by high temperature (1300-1525 °C) of kaolin, its components generate new mullite phase. Its structure changes with increasing temperature, the pores continue to close, become very dense and hard, is an excellent refractory material. With a fire resistance of 7-8, it is used in fillers in refractory materials, reinforced fillers in fiberglass, ingredients for high-grade ceramic blanks in various ceramic cellars, and models of precision castings such as turbine blades in the foundry industry. The refractory of calcined kaolin is related to the content therein, and the higher the Al2O3 content, the greater the ratio of Al2O3/SiO2, and the higher the fire resistance.