某斑岩铜钼矿低碱度铜硫浮选分离研究

为了有效控制石灰高碱工艺对铜硫分离的负面影响，对内蒙古某斑岩型低品位铜钼矿以CTP为硫铁矿抑制剂，进行了铜硫低碱度浮选分离研究。结果表明，在磨矿细度为-200目占65%的情况下，采用1粗3扫3精、中矿顺序返回的闭路流程处理该斑岩型铜钼矿石，可获得铜、钼品位分别为24.57%、6.94%，铜、钼回收率分别为86.58%、81.52%的铜钼混合精矿；此外，还通过纯矿物试验考察了碱度和CTP对黄铜矿、黄铁矿浮选行为的影响，结果表明：高碱度环境对黄铁矿有强烈的抑制作用，但对黄铜矿也有抑制作用；CTP在低碱度环境下能很好地抑制黄铁矿，但对黄铜矿可浮选影响甚微。

Study on the Flotation in Low Alkalinity and the Effect of Alkalinity for a Low Grade Copper-Molybdenum Ore

In order to effectively control the negative impact of the high lime alkali process on the separation of copper and sulfur, flotation tests in low alkali for separating copper and sulfur are made with CTP as the depressant of pyrite for a low grade porphyry-type copper-molybdenum ore of Inner Mongolia. The results show that under the grinding fineness of -200 mesh 65%, copper and molybdenum mixed concentrate with the Cu and Mo grade of 24.57% and 6.94% and the Cu and Mo recovery of 86.58% and 81.52% were obtained by the close-circuit process of one-roughing, three-scavenging, three-cleaning and middlings back to the flow sheet in order. Meanwhile,surveyed the effect of alkalinity and CTP to the floatation of Chalcopyrite and pyrite,the results show that:High alkali has a strong inhibit impact on pyrite, and inhibit chalcopyrite in a certain. CTP can inhibit pyrite well in low alkali condition, but less impact on chalcopyrite in flotation process.