Patent ID: 7670407

Claim:
A method of producing titanium metal from a titanium-containing material, the method including the steps of producing a solution of M II TiF 6 from the titanium-containing material, selectively precipitating (NH 4 ) 2 TiF 6 from the solution by the addition of (NH 4 )aXb in which M II is a cation of the type which forms a hexafluorotitanate, the M II being selected from the group consisting of Fe 2+ , Mn 2+ , Zn 2+ , Mg 2+ , Cu 2+ , Ca 2+ , Sr 2+ , Ba 2+ , Co 2+ and Ni 2+ ; X is an anion selected from halide, sulphate, nitrite, acetate and nitrate; and a and b are 1 or 2; and using the selectively precipitated (NH 4 ) 2 TiF 6 to produce titanium.