微细粒钛铁矿浮选捕收剂改性试验研究  

Experimental Study on Modification of Collector for Fine Grained Ilmenite

作　　者：陈攀[1] 翟计划 王洪彬 孙伟[1] 赖祥生[1] 

机构地区：[1]中南大学资源加工与生物工程学院,湖南长沙410083 [2]攀钢集团矿业有限公司设计研究院,四川攀枝花617000

出　　处：《稀有金属》2018年第2期205-212,共8页Chinese Journal of Rare Metals

基　　金：国家科技支撑计划项目(2015BAB19B00);中南大学创新驱动计划项目(2015CX005)资助

摘　　要：四川攀枝花存储着丰富的钒钛磁铁矿资源,随着矿山进入中深部开采,矿石性质发生了显著变化。原有捕收剂由于适应性较低,在现场生产中普遍存在品位提升困难、回收率偏低等问题,已经难以满足现场生产要求;因此新型钛铁矿捕收剂的研发对提升攀西地区钛铁矿资源的利用率具有重要的意义。在不改变现场原有生产条件的情况下进行了浮选试验条件的优化,高效捕收剂的筛选,通过不同比例含量的月桂酸、塔尔油和十二烷基苯磺酸钠对油酸钠的改性,与现场原有药剂的粗选指标对比可知,十二烷基苯磺酸钠所占比例为10%的组合捕收剂能有效提升钛铁矿粗选回收率。通过对某原矿含11.81%TiO2的钛铁矿进行试验,开路实验表明在精矿品位相近的情况下,新型捕收剂可显著提升钛铁矿回收率10%以上。闭路试验表明,采用预先脱硫-一粗三精一扫-中矿顺序返回的工艺流程,采用现场原有药剂,可以得到TiO2品位为48.23%,回收率为49.48%的钛铁矿精矿产品;新型捕收剂可以得到TiO2品位为47.36%,回收率为61.34%的合格精矿产品,较现场原有药剂回收率提高了11.86%。这对新型钛铁矿浮选药剂的开发和应用具有借鉴作用。Panzhihua, located in Sichuan Province, has abundant resources of vanadium titanium magnetite. As mines are exploited in deep mining, there are significant changes in the nature of ores. Due to the low adaptability of the original collectors, during the process of field production, there are problems such as the difficulty in promoting the grade and the low recovery. It has been difficult to meet the requirements of the field production. Therefore, it is of great significance to develop new collectors for the purpose of high recovery of ilmenite resources in Panzhihua district. In the case of not changing the original production conditions of the site, the optimum flotation test conditions and the screening of high efficient collectors were conducted. After comparison with the field agents of flotation recovery using collectors modified by laurel acid, tar oil and SDBS, it was found that the combined collectors with a 10% proportion of SDBS could work efficiently during the processing of ilmenite flotation. Experiments were conducted using ores containing 11.81% TiO2 and the results of open circuit tests showed that combined collectors with a 10% proportion of SDBS could increase the flotation recovery by over 10% in the case of similar grade. The closed circuit tests were conducted adopting the technological process that pre-desulfurization, one roughing, three cleaning, one scavenging and the middlings returned in order. The closed circuit results showed that, using the field agents, the grade and recovery of concentrate products were 48.23% and 49.48%, respectively. At the same time, using SDBS modified collectors, the grade and recovery of concentrate products were 47.36% and 61.34% , respectively. The flotation recovery could be enhanced by 11.86% and this could guide the new collectors development and application in the flotation field of refractory titanium ores.

关 键 词：钛铁矿 组合捕收剂 高效回收 

分 类 号：TD951[矿业工程—选矿]