Potassium fluoroaluminate( Potassium Cryolite)
Properties: white or grey-white crystal powder; fineness: 20, 40, 100, 200 and
325mesh, composed by KF-AlF3, Molecular rate near 1.2, melting
point 557℃-580℃. Solubility in 1000g water: at 0℃: 0.8g; at 25℃:
1.42g，at 100℃: 4.58g.
Application：It is used as welding flux in aluminum alloy and stainless steel, a
degasser and an
auxiliary solvent in aluminum alloy fabrication, also used as an
active filler for glass, ceramic and friction compound.