摘要
宜春地区堆积着大量富含锂云母(Li_(2)O)的细泥尾矿,由于粒度细、品位低,从中有效回收锂云母资源一直是浮选难题。针对宜春地区某锂云母浮选前脱泥产品,其中-0.075 mm粒级产率占87.00%,原矿Li_(2)O品位低至0.38%,进行了锂云母浮选工艺流程试验研究。分别采用“预先脱泥—浮选”、“加药不强搅拌浮选”和“加药强搅拌预处理浮选”三种浮选流程进行对比试验,研究结果表明,通过加药强搅拌预试验可以改变矿物表面的物理化学性质,有助于实现锂云母的有效富集。通过浮选条件试验选择碳酸钠作为调整剂、六偏磷酸钠作为抑制剂、YM6-1作为捕收剂,通过“一粗一精两扫”的闭路浮选流程最终可以获得Li_(2)O品位为2.01%、回收率为60.62%的锂云母精矿,选别指标良好,成功实现了锂云母细泥中的锂云母资源的高效回收,为宜春目前大量堆积的锂云母细泥尾矿有效回收提供了理论依据。
There is a large amount of fine mud tailings rich in lithium mica(Li_(2)O)in Yichun area,but due to the fine particle size and low grade,the effective recovery of lithium mica resources from it has always been a challenge.An experimental study on the flotation process of lithium mica was carried out for a desliming product before flotation,with a yield of-0.075 mm accounting for 87.00%and a raw ore with Li_(2)O grade as low as 0.38%.Three kinds of flotation flowsheets including pre-desliming-flotation,flotation without strong agitation with reagent addition and flotation with strong agitation pretreatment with reagent addition were used for comparative tests.The results show that the physical and chemical properties of the mineral surface can be changed by the pretreatment of strong stirring by dosing,which is helpful to achieve effective enrichment of lepidolite.The best reagent system obtained by flotation condition test was:sodium carbonate,sodium hexametaphosphate and YM6-1 were used as regulators,depressants and collectors,respectively,and the locked-cycle flotation process of"one roughing,one cleaning and two scavengings"could finally obtain a lithium mica concentrate with a Li_(2)O grade of 2.01%and a recovery of 60.62%,and the test indexes were good,and an efficient recovery of lithium mica resources in the lepidolite fine mud was successfully realized,which provided a theoretical basis for the effective recovery of a large number of lithium mica fine mud tailings accumulated in Yichun.
作者
李雨晴
廖宁宁
姚鑫
谢峰
李哲阳
吴彩斌
LI Yuqing;LIAO Ningning;YAO Xin;XIE Feng;LI Zheyang;WU Caibin(School of Resources and Environmental Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,Jiangxi,China;Jiangxi Provincial key Laboratory of Low-Carbon Processing and Utilization of Strategic Metal Mineral Resources,Ganzhou 341000,Jiangxi,China)
出处
《有色金属（选矿部分）》
CAS
2024年第7期79-84,101,共7页
Nonferrous Metals（Mineral Processing Section）
基金
宜春市科技计划项目(2023ZDJCYJ08)
江西理工大学高层次人才科研启动项目(205200100701)。
关键词
锂云母细泥
浮选分离
捕收剂
强搅拌预处理
lepidolite sludge
flotation separation
collectors
strong stirring pretreatment
