高品位锡精矿-两次反射炉或短窑熔炼流程
来源:网络 作者:网络转载 2019-10-14 阅读:199
采用两次反射炉或短窑熔炼的曲型代表是东南亚各国,我国个别厂采用。 (一)马来丁亚巴特活思(Butter-worth)冶炼锡流程 处理的精矿曲型成分(%)为:75.25Sn,0.02As,0.06S,0.67Fe,0.06Cu,0.024Pb,0.004Bi,0.31TiO2。其炼锡流程见图1。图1 马来西亚巴待活思冶炼厂炼锡流程 此外,该厂还处理中等品位的老挝锡精矿,含40TSn,20%Fe,并有其他杂质。经过图2所示的单独流程作炼前处理后成为高品位锡精矿,再进行还原熔炼。 (二)印度尼西亚佩尔蒂姆(Peltim)炼锡厂炼锡流程 处理的锡精矿成分(%)为:69.01-74.32Sn0.003-0.057As,0.01-1.50S,0.86-2.4Fe,0.01-0.012Cu,0.001-0.073Pb,0.001-0.003Bi,0.001Sb,0.99-3.17SiO2。其炼锡流程见图3。图2巴特沃思冶炼厂预处理老挝高铁精矿流程[next]图3印度尼西亚佩尔蒂姆炼锡厂短窑炼锡流程 (三)我国赣州有色金属冶炼厂炼锡流程 该厂的进厂原料是以钨为主,同时含有锡、钼、铋、铜的中矿或毛砂。中矿一般成分(%)为:39.11-42.10WO3,2.88-5.13Sn,0.74-1.06Mo,1.02-1.06Bi,2.10-2.70Cu。钨锡毛砂含40%Sn。原料先在精选车间进行精选:用磁选法精选锡石-黑钨矿;用电选和浮选锡石-白钨矿;用浮选法分离硫化矿。分别产出锡精矿、钨精矿及伴生金属精矿。进入炼锡流程(见图4)的锡精矿成分(%)为:69.51-71.09Sn,0.1-0.51As,0.16-0.34S,1.0-1.5Fe,0.03-0.08Cu,0.13-0.37Bi,0.14-0.21Pb,0.3-0.7Ca,0.7-3.29SiO2,1.4-1.9WO3。
图4赣州有色金属冶炼厂炼锡流程