The Collection and Recovery of Gold from Roaster Exit Gases at Giant Yellowknife Mines Limited

CIM Bulletin, 1963

B. O. FOSTER

When roasting started at Giant Yellowknife Mines in 1949, it became apparent that, to prevent. air and water pollution in the surrounding district, it would be necessary to collect the arsenic that was contained in the exit gases of t he roaster. The arsenic collection problem was finally solved by the installation of both electrostatic and baghouse collectors. It was realized t hat a considerable quantity of gold-bearing dust was leaving the roaster with the exit gases. When the collection problem was solved, it was possible to measure this Joss. The Joss proved to be considerable and it became evident that a substantial quantity of gold could be recovered. Research programs on dust treatment began in 1958, and by May, 1960, the treatment process which is currently being followed was started in the plant.

Keywords: activated carbon, arsenic, Giant Yellowknife Mines Limited, gold extraction, UST Gold, Agitators, Arsenic, Calcine, Carbon, Dust, Gold, Plants, Roasters, Treatment