Potassium cryolite conventional indicators and main uses

Potassium fluoroaluminate, also known as potassium aluminum fluoride or potassium cryolite, is a synthetic white or off-white powder raw material. It is slightly soluble in water and easily deliquescent. It reacts with water at high temperature to release hydrogen fluoride; it can also be slowly dissolved in strong acid to release hydrogen fluoride. . Because of its appearance, performance and use are very similar to cryolite, it is often called potassium cryolite. The commonly used particle size in industry is 20 mesh, 40 mesh, 100 mesh, 200 mesh, 325 mesh and so on. This product is a toxic and dangerous product, and appropriate protective measures should be taken during production and storage. Potassium cryolite should be stored in a ventilated and dry warehouse. Keep away from moisture. Do not store and mix with food or acids. In case of fire, water, sand and carbon tetrachloride fire extinguishers can be used to extinguish the fire.

Like cryolite, the most important use of potassium cryolite (potassium fluoroaluminate) is as a cosolvent in the electrolytic aluminum industry and as an additive in the production of grinding wheels to enhance the wear resistance and service life of grinding wheels. Used in stainless steel brazing flux; degassing agent and flux in aluminum alloy manufacturing process; active filler in ceramics, glass, casting and other industries; pesticide and insecticide industries, etc.

Potassium cryolite (potassium fluoroaluminate) routine physical and chemical indicators

Color: white or off-white

Form: solid powder

Main components: KAlF4, K3AlF6

Chemical name: potassium fluoroaluminate, potassium aluminum fluoride

Moisture content: ≤1.2%

Melting point: 557°C-580°C

Molecular ratio: about 1.2

Solubility in 1000g aqueous solution: 0.8g at 0°C, 1.42g at 25°C, 4.58g at 100°C

Potassium cryolite (potassium fluoroaluminate) chemical composition

The main application of potassium cryolite (potassium fluoroaluminate)

Co-solvent in the production process of electrolytic aluminum and aluminum alloy

Additives for grinding wheels that increase the life and wear resistance of grinding wheels

Stainless steel brazing flux

Deoxidizer and filler in industries such as metallurgical casting and ceramic glass

Pesticides and Insecticides