筛分—反浮选联合脱杂法制备精光卤石工艺研究  

Research on Preparation of Fine Carnallite by Screening-reverse Flotation Combined with Impurity Removal

作　　者：吴艳妮[1] 丁晓姜 黄友良[1] 李博昀[1] WU Yanni;DING Xiaojiang;HUANG Youliang;LI Boyun(Geology Institute of China Chemical Geology and Mine Bureau,Beijing,100101,China)

机构地区：[1]中化地质矿山总局地质研究院,北京100101

出　　处：《盐湖研究》2024年第6期71-77,共7页Journal of Salt Lake Research

基　　金：青海省科技计划项目(2021-ZJ-773)。

摘　　要：针对察尔汗盐湖产出的高杂质光卤石矿质量差、难以生产利用的情况,本研究以该光卤石矿为原料,采用反浮选工艺和筛分脱除细粒级—反浮选联合工艺分别进行脱除杂质试验研究。结果表明:相比反浮选工艺,联合工艺可以通过脱除-0.088 mm/-0.074 mm细粒级,预先脱除56.36%/41.22%的钠杂质及92.56%/87.79%的钙杂质,再联合一次粗选,两次扫选,粗选精矿与扫选精矿合并的反浮选工艺流程,使Na^(+)、Ca^(2+)脱除率均达到90%以上。脱杂后精光卤石中的K^(+)品位较原矿提高了1.1倍,精光卤石品质能够满足后续生产要求,可以实现该矿正常生产利用,并且该工艺能够显著降低药剂用量,在产品品质及选矿成本上具有较大优势。The high impurity carnallite from Qarhan Salt Lake is difficult to be used because of its poor quality.Therefore,taking the carnallite as raw material,the impurity removal tests were carried out by using the reverse flotation process and the combined process of sieving off fine particles and then reverse flotation.The results showed that compared with the reverse flotation process,56.36%/41.22%sodium impurities and 92.56%/87.79%calcium impurities can be removed by pre-removal of-0.088 mm/-0.074 mm fine particles,and then the removal rate of Na^(+)and Ca^(2+)is more than 90%by combining with the reverse flotation process.After removing impurities,the K^(+)grade of refined carnallite is 1.1 times higher than the raw ore,the quality can meet the following production requirements and enable the carnallite to be used in production.The process can also significantly reduce the dosage of reagent.It has a great advantage in product quality and dressing cost.

关 键 词：光卤石 浮选 氯化钾 氯化钠 硫酸钙/石膏 细粒级 

分 类 号：TD923[矿业工程—选矿] TD97