摘要
铅锌尾矿矿样中主要有价矿物为黄铁矿和重晶石,含少量闪锌矿、方铅矿、灰硫砷铅矿、维硫锑铅矿、针硫锑铅矿等金属硫化物;脉石矿物主要为白云石,少量石英、云母、长石等。主要矿物组成:重晶石约占15%、白云石66%、黄铁矿16%、闪锌矿0.4%、方铅矿0.1%。矿样中BaSO_(4)含量为13.84%,CaCO_(3)、MgCO_(3)含量较高,分别为31.16%、23.69%,白云石可浮性与重晶石相似,因此该矿样为低品位难选重晶石矿。针对该矿石,采用浮选方案进行了实验室小型闭路试验和半工业试验,针对BaSO_(4)品位为16.65%的铅锌尾矿矿样,小型闭路试验获得了产率为10.73%、BaSO_(4)品位为91.27%、作业回收率为70.25%的重晶石精矿;针对含BaSO_(4)16.89%的矿样,半工业试验获得了产率为8.72%、BaSO_(4)品位为95.31%、作业回收率为49.20%的重晶石精矿1和产率为3.59%、BaSO_(4)品位为84.22%、作业回收率为17.90%重晶石精矿2,重晶石总精矿产率为12.31%,BaSO_(4)品位为92.08%、作业回收率为67.10%。半工业试验技术指标和小型试验指标基本吻合,半工业试验结果很好地验证了小型试验结果的可靠性和稳定性,为下一步工业试验及生产打下了基础。
The main valuable minerals in the lead-zinc tailings were pyrite and barite,containing a small amount of sphalerite,galena,jordanite,vinulite,goethite and other metal sulfides,the gangue minerals were mainly dolomite and a small amount of quartz,mica and feldspar.Main mineral composition:about 15%barite,66%dolomite,16%pyrite,0.4%sphalerite and 0.1%galena.In the ore sample,the content of BaSO_(4) was 13.84%,and the contents of CaCOs and MgCO;were relatively high,which were both 31.16%and 23.69%respectively.The floatability of dolomite is similar to that of barite,so the ore sample is a low-grade refractory barite ore.In view of this ore,the laboratory small-scale locked-cycle test and the semi-industrial test were carried out by using the flotation scheme.For the lead-zinc tailings sample with BaSO_(4) grade of 16.65%,a barite concentrate with yield of 10.73%,BaSO_(4) grade of 91.27%and operation recovery of 70.25%was obtained by the small-scale locked-cycle test.For the ore sample with BaSO_(4) grade of 16.89%,barite concentrate 1 with yield of 8.72%,BaSO_(4) grade of 95.31%and operating recovery of 49.20%and barite concentrate 2 with yield of 3.59%,BaSO_(4) grade of 84.22%and operating recovery of 17.90%were obtained in the semi-industrial test.The total yield of barite concentrate was 12.31%,the grade of BaSO_(4) was 92.08%,and the operating recovery was 67.10%.The technical indexes of the semi-industrial test were basically consistent with those of the small-scale test,and the semi-industrial test results well verified the reliability and stability of the small-scale test results,which layed a foundation for the next industrial test and production.
作者
张红英
刘进
ZHANG Hongying;LIU Jin(Institute of Resource Utiization and Rare Earth Deveopment Guangdong Academy of Sciences Guangzhou 510650,China;State Key Laboratory of Rare Metals Separation and Comprehensive Utilization,Guangzhou 510650,China;Guangdong Provincial Key Laboratory Development and Comprehensive Utilization of Mineral Resources,Guangzhou 510650,China)
出处
《有色金属（选矿部分）》
CAS
2024年第3期91-97,106,共8页
Nonferrous Metals（Mineral Processing Section）
基金
华南优势特色矿产资源高效利用与应用开发项目(2022GDASZH-2022010104)。
关键词
铅锌尾矿
重晶石
综合回收
含钙镁矿物
lead-zinc tailings
barite
comprehensive recovery
minerals containing calcium and magnesium
