工程科学学报.第43卷，第4期：503-511.2021年4月 Chinese Journal of Engineering,Vol.43,No.4:503-511,April 2021 https://doi.org/10.13374/j.issn2095-9389.2020.02.24.001;http://cje.ustb.edu.cn 云南某胶磷矿AMICS工艺矿物学研究及其难选机理探讨 吴中贤)，陶东平2)四 1)辽宁科技大学矿业工程学院，鞍山1140512)山东理工大学资源与环境工程学院，淄博255049 ☒通信作者，E-mail:dptao@qq.com 摘要为了深入探讨胶磷矿难选的具体原因，采用化学分析、X射线衍射以及矿物自动分析系统(AMICS)测试手段对云南 某胶磷矿浮选给料进行了系统深入的工艺矿物学研究，探索了该矿样难浮选分离的内在机理.结果表明：该样品中磷主要以 氟磷灰石形式存在，其脉石矿物以白云石和石英为主.氟磷灰石的嵌布粒度较细，主要分布于10~75m的粒度范围，其单体 解离度为59.17%.除了以单体的形式存在以外，氟磷灰石主要与白云石、石英连生，连生体的质量分数分别为26.23%和 9.92%.而白云石和石英的单体解离度相对较低，分别为46.82%和39.10%.进行了粗选脱镁、一粗两扫脱硅的闭路流程浮选 试验，获得了精矿P205品位为29.75%、P05回收率为81.95%.SiO2品位为12.63%的浮选指标.结合工艺矿物学分析结果， 指出该浮选样品中胶磷矿嵌布粒度细、难以获得较好的解离度、泥化严重是浮选难于获得更好指标的主要原因. 关键词矿物自动分析系统：工艺矿物学：胶磷矿：浮选：难选机理 分类号TD912 Mineralogical analysis of collophane in Yunnan using AMICS and exploration of difficult flotation mechanisms WU Zhong-xian,TAO Dong-ping 1)School of Mining Engineering,University of Science and Technology Liaoning,Anshan 114051,China 2)School of Resources and Environmental Engineering.Shandong University of Technology,Zibo 255049,China Corresponding author,E-mail:dptao@qq.com ABSTRACT It is a global fact that the mineral ores degrade to the poor grade status and the various properties of ores are adversely altered such as fine dissemination and complex composition due to the continuous exploitation and utilization of phosphate rock resources.Consequently,separation of minerals has become a difficult and daunting task.The automatic mineral identification and characterization system(AMICS)is mostly used only for mineral characterization.There is no much research and literature on process mineralogy that integrates research parameters with flotation test results to quantitatively explore the mechanism of difficulties or problems faced during mineral separation.In this paper,to further explore and analyze the specific reasons for difficult problems faced while separating collophanite,a systematic in-depth mineralogical analysis based on the chemical analyses,X-ray diffraction,and AMICS has been performed on a refractory collophane flotation feed sample from Yunnan,China.The results show that the phosphorus in the sample mainly exists in the form of fluorapatite and also present in the gangue minerals,which are primarily dolomite and quartz. Fluorapatite has a fine dissemination particle size,which is in the range of 10-75 um with a degree of mineral liberation 59.17%.Apart from existing in the form of liberated particles,fluorapatite is also present in dolomite and quartz as a composite particle and the mass fraction of composition in dolomite and quartz is found to be 26.23%and 9.92%,respectively.Further,dolomite and quartz relatively have a low degree of mineral liberation with the liberation degree of 46.82%and 39.10%,respectively.The closed-circuit flotation test 收稿日期：2020-02-24 基金项目：辽宁省攀登学者人才资助项目：辽宁省重点资助项目(2017230002)云南某胶磷矿 AMICS 工艺矿物学研究及其难选机理探讨 吴中贤1)，陶东平2) 苣 1) 辽宁科技大学矿业工程学院，鞍山 114051    2) 山东理工大学资源与环境工程学院，淄博 255049 苣通信作者，E-mail：dptao@qq.com 摘    要    为了深入探讨胶磷矿难选的具体原因，采用化学分析、X 射线衍射以及矿物自动分析系统（AMICS）测试手段对云南 某胶磷矿浮选给料进行了系统深入的工艺矿物学研究，探索了该矿样难浮选分离的内在机理. 结果表明：该样品中磷主要以 氟磷灰石形式存在，其脉石矿物以白云石和石英为主. 氟磷灰石的嵌布粒度较细，主要分布于 10～75 μm 的粒度范围，其单体 解离度为 59.17%. 除了以单体的形式存在以外，氟磷灰石主要与白云石、石英连生，连生体的质量分数分别为 26.23% 和 9.92%. 而白云石和石英的单体解离度相对较低，分别为 46.82% 和 39.10%. 进行了粗选脱镁、一粗两扫脱硅的闭路流程浮选 试验，获得了精矿 P2O5 品位为 29.75%、P2O5 回收率为 81.95%，SiO2 品位为 12.63% 的浮选指标. 结合工艺矿物学分析结果， 指出该浮选样品中胶磷矿嵌布粒度细、难以获得较好的解离度、泥化严重是浮选难于获得更好指标的主要原因. 关键词    矿物自动分析系统；工艺矿物学；胶磷矿；浮选；难选机理 分类号    TD912 Mineralogical  analysis  of  collophane  in  Yunnan  using  AMICS  and  exploration  of difficult flotation mechanisms WU Zhong-xian1) ，TAO Dong-ping2) 苣 1) School of Mining Engineering, University of Science and Technology Liaoning, Anshan 114051, China 2) School of Resources and Environmental Engineering, Shandong University of Technology, Zibo 255049, China 苣 Corresponding author, E-mail: dptao@qq.com ABSTRACT    It is a global fact that the mineral ores degrade to the poor grade status and the various properties of ores are adversely altered  such  as  fine  dissemination  and  complex  composition  due  to  the  continuous  exploitation  and  utilization  of  phosphate  rock resources.  Consequently,  separation  of  minerals  has  become  a  difficult  and  daunting  task.  The  automatic  mineral  identification  and characterization system (AMICS) is mostly used only for mineral characterization. There is no much research and literature on process mineralogy  that  integrates  research  parameters  with  flotation  test  results  to  quantitatively  explore  the  mechanism  of  difficulties  or problems faced during mineral separation. In this paper, to further explore and analyze the specific reasons for difficult problems faced while  separating  collophanite,  a  systematic  in-depth  mineralogical  analysis  based  on  the  chemical  analyses,  X-ray  diffraction,  and AMICS has been performed on a refractory collophane flotation feed sample from Yunnan, China. The results show that the phosphorus in the sample mainly exists in the form of fluorapatite and also present in the gangue minerals, which are primarily dolomite and quartz. Fluorapatite has a fine dissemination particle size, which is in the range of 10–75 μm with a degree of mineral liberation 59.17%. Apart from existing in the form of liberated particles, fluorapatite is also present in dolomite and quartz as a composite particle and the mass fraction of composition in dolomite and quartz is found to be 26.23% and 9.92%, respectively. Further, dolomite and quartz relatively have a low degree of mineral liberation with the liberation degree of 46.82% and 39.10%, respectively. The closed-circuit flotation test 收稿日期: 2020−02−24 基金项目: 辽宁省攀登学者人才资助项目；辽宁省重点资助项目（2017230002） 工程科学学报，第 43 卷，第 4 期：503−511，2021 年 4 月 Chinese Journal of Engineering, Vol. 43, No. 4: 503−511, April 2021 https://doi.org/10.13374/j.issn2095-9389.2020.02.24.001; http://cje.ustb.edu.cn