Experimental Study on Beneficiation of a Low Grade Wolframite scheelite Ore in Guangdong Province
The grade of WO3 is 0.44%in a Guangdong ore,and the distribution rates of scheelite and wolframite are respectively 61.36%and 31.82%.The metal sulfide are mainly arsenopyriteand pyrite,and gangue minerals are mainly quartz and feldspar and sericite.Under the condition that grinding fineness is-0.074 mm 72.56%,the wolframite concentrate is recovered by flotation desulfurization,heating cleaning of tungsten rough concentrate,and magnetic-gravity combined process of scheelite tailings.The closed-circuit test obtained a sulfur concentrate with a yield of 0.73%and S grade of 45.21%and S recovery of 91.68%and a scheelite concentrate with a yield of 0.44%and WO3 grade of 65.58%and WO3 recovery of 67.11%and a wolframite concentrate with a yield of 0.13%and WO3 grade of 50.87%and WO3 recovery of 15.38%.The total recovery of tungsten is 82.49%.
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