Experiment research on mineral processing of recycling wolframite and scheelite from a low grade polymetallic ore

A complex and low grade wolframite-scheelite associated ore belongs to a world-class refractory one, which is assaying WO₃ 0.26% with distribution of WO₃ in scheelite, wolframite and tungstite being 82.69%、13.85%、3.46% respectively. And more than 90% of grains size is less than 0.074 mm. However the recovey of WO₃ was just 65% after years research. In order to improve recoverage of WO₃, a new mineral processing reagent TAB-3 and a reasonable flowsheet (flotation-magnetic separation-flotation) are adopted after experiment research, the scheelite concentrate assaying WO₃ 74.57% with recovery 69.47% and wolframite concentrate assaying WO₃ 28.88% with recovery 8.08% are obtained with total recovery WO₃ 77.55%.