Process Mineralogy of Quartz Veinlet-type Complex Tungsten-Molybdenum Polymetallic Ore

Process mineralogy of a quartz veinlet-type tungsten-molybdenum polymetallic ore was investigated by Automatic Quantitative Mineral Technology MLA and traditional process mineralogical research methods. The results indicate that wolframite is the main tungsten mineral in the ore. The scheelite is metasomatic commonly in wolframite to form pseudomorphous scheelite which has the shape of wolframite and the chemical content of scheelite. The scheelite and wolframite in ore have similar dissemination size mainly ranging from 0.02 mm to 0.32mm, and the scheelite is relatively more coarse.The main molybdenum mineral is molybdenite. The dissemination size of molybdenite is relatively coarse which mainly ranging from 0.04 mm to 0.64 mm. The liberation degree of tungsten mineral and molybdenite at the grinding fineness of 38.17 %-0.074 mm are 79.61 % and 88.34 %respectively. Bismuth and silver are associated in the ore. The bismuth minarals have complex kinds and are the main carriers of silver that can be recycled by the concentration of bismuth. The study on occurrence state of tungsten, molybdenum and bismuth indicate that the theoretical recovery respectively more higher.