Distribution of some trace elements in different benefication fractions from the Bleikvassli pyritic lead-zinc ore body, Nordland.

Abstract

The distribution of some minor and trace elements at different stages of sulphide ore benefication in the Bleikvassli ore-dressing plant, has been studied using neutron activation analysis. Silver, gold, antimony and selenium are found to be concentrated along with lead. Cobalt is found in the pyrite concentrate. Arsenic is concentrated mainly with pyrite, bu a minor fraction is also carried together with lead. Scandium and thorium are shown to be associated with the gangue minerals. Chromium present in the crude ore appears to have been removed to a great extent before the first flotation step.