The Metallurgical Grade Fluorspar Lump used as a flux for smelting metals,this kinds of fluorspar can reduce from the metals such impurities as silicon, sulfur, phosphorus, etc., to the suitable contents, and can also enhance the fluidity of the slag. we can supply fluorspar with the following specifications. Metallurgical grade fluorspar Specs.: Commodity: Fluorspar Lump (1) Specs.: CaF2: 92% MIN SiO2: 6% MAX Size: 10-50mm 90% min (2) Specs.: CaF2: 90% MIN SiO2: 8% MAX Size: 10-50mm 90% min (3) Specs.: CaF2: 85% MIN SiO2: 14% MAX Size: 10-50mm90% min Packing: 1.2 mtons per bag if you are interested in flourspar, pls feel free to contact with me.