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对锡石-硫化物矿石而言,增大硫化矿物的浮选粒度,可显著提高随后重选的效率。为此目的而采用枱浮,因其生产率低而未能发挥浮选-重选流程的全部优越性。用米哈诺布尔型标准浮选机回收大于0.2毫米颗粒的尝试未能成功。基于此,采用在沸腾层内使空气泡矿化的浮选设备,对一个粗磨的锡石-硫化物矿石进行浮选。如所周知,这种设备可确保起浮粒度的显著增大。矿石含(％)锡石0.6～0.7、黄铜矿4.0、砷黄铁矿2.5、黄铁矿和磁黄铁矿1.6、方铅矿0.1、闪锌矿0.5、褐铁矿5.0、石英、电气石和石英-电气石岩在85以上。磨矿至2毫米,硫化物集晶对脉石的解离度为:2～1毫米级35％,～0.5毫米级70％,0.5～0.2毫米级90％;
For cassiterite-sulfide ores, increasing the flotation particle size of sulphide minerals can significantly improve the efficiency of subsequent re-selection. Taiwan Floats are used for this purpose, failing to exert the full benefits of flotation-reselection processes because of their low productivity. Attempts to recover particles larger than 0.2 mm using the Miharnot type standard flotation machine failed. Based on this, a coarsely ground cassiterite-sulfide ore is subjected to flotation by means of flotation equipment that bubble air into the boiling layer. As is well-known, this equipment ensures a significant increase in the particle size of the float. Ore Contains (%) Cassava 0.6 ~ 0.7, Chalcopyrite 4.0, Arsenopyrite 2.5, Pyrite and Pyrrhotite 1.6, Galena 0.1, Sphalerite 0.5, Limonite 5.0, Quartz, Electrical Stone and Quartz - tourmaline rock above 85. Grinding ore to 2 mm, the concentration of sulfide on gangue dissociation: 2 ~ 1 mm 35%, ~ 0.5 mm 70%, 0.5 ~ 0.2 mm 90%;