内蒙古某低品位混合型钨矿选矿试验研究  

Experimental Study on Beneficiation of a Low Grade Mixed Tungsten Ore in Inner Mongolia

作　　者：钟佳霖 吴迪 王洪岭 ZHONG Jialin;WU Di;WANG Hongling(Institution Business of Geological Party No.243,CNNC,Chifeng 024000,Inner Mongolia,China;Institute of Resource 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 Key Laboratory of Mineral Resources Development and Comprehensive Utilization,Guangzhou 510650,China)

机构地区：[1]核工业二四三大队,内蒙古赤峰024000 [2]广东省科学院资源利用与稀土开发研究所,广州510650 [3]稀有金属分离与综合利用国家重点实验室,广州510650 [4]广东省矿产资源开发和综合利用重点实验室,广州510650

出　　处：《有色金属（选矿部分）》2024年第11期53-61,共9页Nonferrous Metals（Mineral Processing Section）

基　　金：国家重点研发计划项目(2023YFC2908105)。

摘　　要：内蒙古赤峰敖汉旗某低品位混合型钨矿含WO_(3)0.15%。工艺矿物学研究结果表明,矿石中白钨矿与钨锰矿比例约为1∶1,矿物嵌布粒度偏细,矿物种类多达40余种,杂质矿物对钨选矿干扰巨大,无论是钨的浮选还是重选都面临巨大挑战。为实现该低品位混合型钨矿的综合利用,对该矿石进行了详细的选矿试验研究,采用“脱硫—钨混合浮选—摇床精选”工艺流程,实现了钨资源的综合回收。选矿试验通过在磨矿过程预先添加碳酸钠调浆,减少了硫化矿氧化过程对矿浆环境的影响,改善钨矿物浮选活性,从根本上提高了钨浮选回收率。脱硫采用硫酸铜作为活化剂,丁基黄药作为捕收剂,脱硫率达到95.18%,钨损失仅5.15%,降低了硫化矿对钨混合浮选的影响。钨混合浮选采用硝酸铅作为活化剂,高效羟肟酸捕收剂GY109作为捕收剂,实现了白钨矿和钨锰矿的同步浮选回收,捕收效果显著优于苯甲羟肟酸和水杨羟肟酸,获得了WO_(3)品位11.55%,回收率85.47%的钨浮选精矿。最后对钨浮选精矿采用摇床进行精选,获得了WO_(3)品位50.24%、回收率55.87%的摇床精矿,WO_(3)品位11.43%、回收率9.14%的摇床中矿,WO_(3)品位3.73%、回收率20.46%的摇床尾矿。由于摇床中矿和尾矿含WO_(3)均较高,为确保钨利用率最大化,可将二者分别返回至摇床作业和钨浮选精选作业进一步分选。A low grade mixed tungsten ore in Aohanqi of Chifeng,Inner Mongolia,contains WO_(3)0.15%.Process mineralogy research shows that the proportion of scheelite and huebnerite is about 1∶1,and the mineral distribution particle size is fine.There are more than 40kinds of minerals,and the impurity minerals interfere greatly with tungsten beneficiation.Both the flotation and gravity separation of tungsten are facing great challenges.In order to realize the comprehensive utilization of the low grade mixed tungsten ore,detailed beneficiation experiments were carried out on the ore.The comprehensive recovery of tungsten resources was realized by using the process of“desulphurization-tungsten mixed flotation-shaking table concentration”.By the addition of sodium carbonate in the grinding process,the effect of sulfide ore oxidation on pulp environment was reduced,the flotation activity of tungsten minerals was improved,and the recovery of tungsten flotation was increased fundamentally.With copper sulfate as activator and butyl xanthate as collector,the desulfurization rate reached 95.18%and tungsten loss was only 5.15%,which reduced the influence of sulfide ore on tungsten mixed flotation.Tungsten mixed flotation used lead nitrate as activator and GY109,a highly efficient hydroxamic acid collector,as collector to realize synchronous flotation recovery of scheelite and tungsten-manganese ore.The collection effect was significantly better than benzohydroxamic acid and salicylic hydroxamic acid,obtained tungsten flotation concentrate with WO_(3) grade of 11.55%and recovery of 85.47%.Finally,the shaking table concentrate with WO_(3)grade 50.24%and recovery of 55.87%,shaking table middlings with WO_(3) grade 11.43%and recovery of 9.14%,shaking table tailings with WO_(3)grade 3.73%and recovery of 20.46%were obtained through the shaking table test of tungsten flotation concentrate.Since the middlings and tailings in the shaking table had high WO_(3)content,to ensure maximum tungsten utilization,they could be returned to the sh

关 键 词：低品位钨矿 钨混合浮选 碳酸钠调整剂 羟肟酸捕收剂 

分 类 号：TD923[矿业工程—选矿] TD952