石英细脉型复杂钨钼多金属矿石工艺矿物学研究

结合传统工艺矿物学研究方法，采用MLA自动检测方法对某石英细脉型钨钼多金属矿石进行工艺矿物学研究，研究结果表明：该矿石中钨矿物以黑钨矿为主，并且白钨矿交代黑钨矿现象较普遍，形成有具黑钨矿外形，而化学组成为白钨矿的假象白钨矿。矿石中黑钨矿、白钨矿的嵌布粒度相似，以白钨矿略粗，嵌布粒度主要在0．02～0．32mm范围。钼主要以辉钼矿矿物形式存在，嵌布粒度较粗，主要在0．04～0．64mm范围。当磨矿细度为-0．074mm占38．17％时，钨矿物总解离度为79．61％，辉钼矿总解离度为88．34％。此外矿石中伴生铋和银，铋矿物种类复杂，并且是银的主要载体，银可随铋的富集得以回收。钨钼铋的赋存状态研究表明，该矿石钨的理论回收率较高。

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 0.32 mm, 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.