Flotation practices at Brunswick Mining

CIM Bulletin, Vol. 73, No. 814, 1980

STUART McTAVISH, Supervisor of Metallurgical Operations, Brunswick Mining and Smelting Corporation Limited, Bathurst, N.B.

The Brunswick Mining concentrator processes 10,000 D.S.T. per day of a complex sulphide ore. Four separate concentrates—zinc, lead, copper and bulk—are produced by selective flotation. Several major changes have been made to the Brunswick flotation circuit to improve the process and control.This paper will describe the present flotation practices at the Brunswick Concentrator. Special emphasis is given to the conversion of two of the primary circuits to an SO2-aeration flowsheet, and to the addition of a new secondary zinc flotation circuit that produces a zinc concentrate from the plant tailings.
Keywords: Flotation, Brunswick Mining and Smelting, Copper separation, Lead upgrading, Zinc flotation, Reagents, Process control, Computers.