磁—浮联合工艺回收矽卡岩型钨尾矿中萤石试验研究  

Experimental Study on Recovery of Fluorite From Skarn Type Tungsten Tailings by Magnetic and Flotation Combined Process

作　　者：汪志平 王成行 邹坚坚 林辉 李强 WANG Zhiping;WANG Chenghang;ZOU Jianjian;LIN Hui;LI Qiang(Jiangxi Dangping Tungsten Industry Co.,Ltd.,Dayu 341500,China;Institute of Resources Utilization and Rare Earth Development,Guangdong Academy of Sciences,Guangzhou 510650,China;State Key Laboratory of Separation and Comprehensive Utilization of Rare Metals,Guangzhou 510650,China;Guangdong Provincial Key Laboratory for Development and Comprehensive Utilization of Mineral Resources,Guangzhou 510650,China)

机构地区：[1]江西荡坪钨业有限公司,江西大余341500 [2]广东省科学院资源利用与稀土开发研究所,广东广州510650 [3]稀有金属分离与综合利用国家重点实验室,广东广州510650 [4]广东省矿产资源开发和综合利用重点实验室,广东广州510650

出　　处：《金属矿山》2023年第5期260-265,共6页Metal Mine

基　　金：广东省科学院发展专项资金项目(编号:2022GDASZH-2022010104)。

摘　　要：为有效利用江西某钨尾矿中的萤石,基于尾矿性质,确定采用强磁选抛尾预富集萤石—浮选高效富集的选矿工艺流程开展综合回收试验。尾矿样经“1粗1精”高梯度强磁选预富集处理后,萤石与方解石富集至非磁产品和强磁中矿,CaF_(2)、CaCO_(3)的累计回收率分别达94.82%、94.77%,而强磁产品的CaF_(2)、CaCO_(3)品位分别降至3.29%、2.96%。将非磁产品和强磁中矿合并为浮选给矿开展药剂制度研究,条件试验确定采用GYSH作为硅矿物抑制剂,适宜用量为3000g/t;GY51作为碳酸盐矿物抑制剂,适宜用量为150g/t;GYOZ作为萤石捕收剂,适宜用量为150g/t。在适宜的药剂制度条件下,全流程闭路试验可获得CaF_(2)品位96.37%、CaF_(2)回收率84.58%、CaCO_(3)含量1.57%的萤石精矿。研究开发的工艺流程及药剂制度大幅减少萤石浮选处理量,实现了萤石的高效回收,为同类型钨尾矿的资源化利用提供了技术依据。In order to effectively utilize fluorite from a tungsten tailings in Jiangxi Province,based on the properties of the tailings,the beneficiation process of pre-enrichment fluorite by high-intensity magnetic separation tailing discarding and highefficiency enrichment by flotation was determined to carry out comprehensive recovery tests.After the preconcentration of tailing samples with"one roughing and one cleaning"high gradient high-intensity magnetic separation,fluorite and calcite were enriched to non-magnetic products and high-intensity magnetic medium ore.The cumulative recovery rates of CaF_(2) and CaCO_(3) reached 94.82%and 94.77%,respectively,while the grade of CaF_(2) and CaCO_(3) of high intensity magnetic products decreased to 3.29%and 2.96%,respectively.The non-magnetic product and high-intensity magnetic medium ore were combined into flotation feeding for carrying out the reagent system research.The condition test confirmed that GYSH was used as silicon mineral inhibitor,and the appropriate dosage was 3000 g/t.GY51 was used as carbonate mineral inhibitor,and the appropriate dosage was 150 g/t.The suitable dosage of GYOZ as a fluorite collector is 150 g/t.Under the conditions of suitable reagent system,fluorite concentrate with CaF_(2) grade of 96.37%,CaF_(2) recovery rate of 84.58%and CaCO_(3) content of 1.57%was obtained in the closed-circuit test of the whole process.The developed process flow and reagent system can greatly reduce the flotation treatment amount of fluorite,realize the efficient recovery of fluorite,and provide a technical basis for the utilization of the same type of tungsten tailings.

关 键 词：萤石 方解石 强磁选预富集 抑制剂 高效捕收剂 浮选分离 

分 类 号：TD923[矿业工程—选矿]