摘要
内蒙古某低品位铜钼混合精矿中辉钼矿和铜矿的嵌布粒度很细,在-0.043mm级别中,辉钼矿、铜矿物的含量分别为77.30%和65.77%,造成铜钼浮选分离困难。试验首先对铜钼混合精矿进行浓密脱药,然后以水玻璃和硫氢化钠作为脉石矿物和铜矿物的抑制剂,并用氧化剂高锰酸钾进一步抑制微细颗粒次生铜矿物,在利用多次循环闭路回水、再磨细度82.5%-0.043mm的条件下,经过一次粗选、二次扫选和四次精选,擦洗后再进行二次精选的闭路试验,获得了钼品位55.73%、含铜0.64%,钼回收率68.11%的钼精矿;铜品位21.36%、含钼0.1447%,铜回收率99.98%的铜精矿,实现了铜钼的有效分离。
In flotation the copper-molybdenum bulk concentrate is difficultly separated. The reason is that the con- tents of molybdenite and copper distribution in the-0. 043mm of bulk concentrate are 77.30% and 65.77%, respec- tively. In the experiment, the bulk concentrate is firstly thickened and dereagented, then add sodium silicate and NariS as depressor of the gangue and copper minerals ; add oxidant potassium permanganate to depress the ultra-fine size secondary copper minerals. With the condition of fine size （82. 5 % passing 0. 043 mesh）and the closed water circuit ,the closed process of experiment is one roughing, two scavenging, four cleaning, two cleaning after scrub- bing. The effective copper and molybdenum separation is achieved. The grade of molybdenum concentrate is 55.73% Mo,0. 64% Cu with recovery of 68.11%, while the grade of copper concentrate is 21.36% Cu ,0. 1447% Mo with recovery of 99.98%.
出处
《矿产综合利用》
CAS
2013年第1期30-33,共4页
Multipurpose Utilization of Mineral Resources
基金
十二五支撑计划项目(2012BAE06B05)
十二五863计划项目(2012AA061501)
关键词
铜钼混合精矿
硫氢化钠
铜钼分离
抑制剂
Copper-molybdenum bulk concentrate
Sodium hydrosulfide
separation of copper and molybdenum
