Method of converting a bath of non-ferrous molten metal matte

Details Method of converting a bath of non-ferrous molten metal matte Method of converting a bath of non-ferrous molten metal matte

C - Chemistry, Metallurgy

22

B

53/361

C22B 15/06 (2006.01) C22B 5/12 (2006.01) C22B 23/00 (2006.01) C22B 23/02 (2006.01)

Patent

CA 1142366

ABSTRACT OF THE DISCLOSURE A method of converting a charge of non-ferrous metal matte in a Pierce-Smith or similar converter. The fluid charge is blown with a total flow of oxidizing gas containing up to about 40% oxygen effective to maintain autogenous converting temperatures through a plurality of spaced-apart single bore tuyeres limited in number and individual cross-sectional area effective to maintain the gas underexpanded at a pressure within the range from about 50 to about 150 psig so that it penetrates the bath in the form of discrete steady unshielded jets to positions remote from the tuyere tips thereby reducing degradation of the refractories and build up of accretions. The gas is injected through from three to six tuyeres.

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