Process and apparatus for converting spent potliners into a...

Details Process and apparatus for converting spent potliners into a... Process and apparatus for converting spent potliners into a...

C - Chemistry, Metallurgy

22

B

C22B 7/00 (2006.01) C04B 5/00 (2006.01) C04B 7/19 (2006.01) C04B 18/14 (2006.01) C04B 18/04 (2006.01)

Patent

CA 2497064

A pyrometallurgical process and apparatus for converting spent potliners from aluminium manufacturing or other hazardous materials into an amorphous sodium and calcium fluroaluminosilicate glass frit and a high carbon material. Spent potliners, silica or siliceous material, and a calcium oxide source are fed into the non-burner end of a counter-current rotating kiln. The material is heated to destroy cyanides, convert fluoride salts to calcium fluoride and form a homogeneous liquid material. Carbon is then physically separated from the material. The material is then vitrified to produce a valuable glass frit and a high carbon material.

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