新疆某低品位磷灰石型磷矿浮选试验研究  

Experimental Study on Flotation of Phosphorite Ore from a Low-grade Apatite Deposit in Xinjiang

作　　者：黄俊玮 王守敬[1,2,3] 李洪潮 赵恒勤[1,2,3] HUANG Junwei;WANG Shoujing;LI Hongchao;ZHAO Hengqin(Zhengzhou Institute of Multipurpose Utilization of Mineral Resources,CAGS,Zhengzhou 450006,China;National Engineering Research Center for Multipurpose Utilization of Nonmetallic Mineral Resources,Zhengzhou 450006,China;Key Laboratory of Multipurpose Utilization and Evaluation of Polymetallic Ore,MNR,Zhengzhou 450006,China)

机构地区：[1]中国地质科学院郑州矿产综合利用研究所,河南郑州450006 [2]国家非金属矿资源综合利用工程技术研究中心,河南郑州450006 [3]自然资源部多金属矿综合利用评价重点实验室,河南郑州450006

出　　处：《金属矿山》2022年第3期137-142,共6页Metal Mine

基　　金：中国地质调查局地质调查项目(编号:DD20190186)。

摘　　要：新疆某低品位磷灰石矿主要有价成分P_(2)O_(5)含量为4.82%,有害成分MgO含量为14.54%。为确定适宜的开发利用工艺,在系统工艺矿物学研究的基础上,开展了浮—重联合工艺和分级干式磁选工艺对比试验研究。结果表明:①矿石中主要有用矿物磷灰石含量为11.77%,可综合回收矿物黑云母含量为20.60%,主要脉石矿物透辉石含量为63.99%;磷灰石、透辉石和黑云母的粒度均较粗,易解离,有利于磷灰石的选别。②相对于分级干式磁选工艺流程,浮—重联合工艺流程在磷灰石精矿品位相近的情况下,回收率高出22.42个百分点且可综合利用黑云母矿物,选别指标更优。③采用“1粗1扫2精、中矿循序返回”的闭路试验流程,可获得产率为14.60%,P_(2)O_(5)含量为31.87%,P_(2)O_(5)回收率为96.63%的磷精矿。④针对含有24%黑云母的浮选尾矿,通过螺旋溜槽重选,可获得矿物含量大于95%的黑云母精矿。研究结果可为同类型磷矿资源的开发利用提供借鉴。The contents of valuable component P_(2)O_(5) and harmful component MgO in a low grade apatite ore from Xinjiang are 4.82%and 14.54%,respectively.In order to determine the suitable development and utilization process,the comparative experimental study of flotation and gravity separation combined process with graded dry magnetic separation process was carried out on the basis of systematic process mineralogy research.The results showed that:①The contents of the main useful mineral apatite,comprehensive recovery of mineral biotite and gangue mineral diopside are 11.77%,20.60%and 63.99%,respectively.The particle size of apatite,diopside and biotite are coarse and easy to dissociate,which is conducive to the separation of apatite.②Compared with the graded dry magnetic separation process,the flotation and gravity separation combined process with similar apatite concentrate grade has a higher recovery rate with 22.42 percentage points higher and could comprehensively utilize biotite,which indicated better separation index.③Phosphorus concentrate with yield of 14.60%,P_(2)O_(5) contents of 31.87%and P_(2)O_(5) recovery of 96.63%was obtained by the closed-circuit test process of"one roughing,one scavenging,two cleaning and middling returning step by step".④For flotation tailings containing 24%biotite,biotite concentrate with mineral contents greater than 95%could be obtained through spiral chute gravity separation.The research results could provide reference for the development and utilization of the same type of phosphate resources.

关 键 词：低品位磷灰石 工艺矿物学 联合工艺 黑云母 

分 类 号：TD923[矿业工程—选矿] TD97