某花岗伟晶岩锂矿石中铷矿物的性质及含铷云母的回收  

The Properties of Rubidium Minerals in a Granite Pegmatite Lithium Ore and the Recovery of Rubidium-bearing Mica

作　　者：杨成梅[1] 刘伟 李波 李永 姚艳清 李沛伦 王威[5] 汪泰 陈欣美[1] YANG Chengmei;LIU Wei;LI Bo;LI Yong;YAO Yanqing;LI Peilun;WANG Wei;WANG Tai;CHEN Xinmei(Urumqi Vocational University,Urumqi 830000,China;Geological and Mineral Prospecting Research Institute of Nonferrous Geological Prospecting Bureau of Xinjiang,Urumqi 830000,China;Institute of Resource Utilization and Rare Earth Development,Guangdong Academy of Sciences,Guangdong 510650,China;State Key Laboratory of Rare Metals Separation and Comprehensive Utilization,Guangdong 510650,China;Xijiang Natural Resources and Ecological Environment Research Center,Urumqi 830000,China)

机构地区：[1]乌鲁木齐职业大学,新疆乌鲁木齐830000 [2]新疆维吾尔自治区有色地质勘查局地质矿产勘查研究院,新疆乌鲁木齐830000 [3]广东省科学院资源利用与稀土开发研究所,广东广州510650 [4]稀有金属分离与综合利用国家重点实验室,广东广州510650 [5]新疆自然资源与生态环境研究中心,新疆乌鲁木齐830000

出　　处：《金属矿山》2024年第12期211-216,共6页Metal Mine

基　　金：国家重点研发计划项目(编号:2021YFC2903201);新疆维吾尔自治区重大科技专项(编号:2023A03003-1,2023A03002-4)。

摘　　要：西昆仑509道班西花岗伟晶岩型锂多金属矿石中主要含铷矿物为白云母和微斜长石,为了在不影响主金属矿物锂辉石回收的情况下优先高效回收铷,开展了含铷矿物的矿物学研究及白云母浮选试验。研究表明:矿石中长石矿物种类较多,且以钠长石为主,微斜长石与之分离困难,因此,白云母是矿石中可回收的载铷矿物;白云母嵌布粒度粗细不均、以细粒居多,与钠长石等脉石矿物嵌布关系密切,宜在充分磨矿的情况下采用浮选工艺回收,但应避免较强的碱性环境,确保不影响后续浮锂;在以碳酸钠调浆、磨矿细度-0.074 mm占71.5%的情况下,以GYMN为抑制剂,GYR-3为捕收剂,采用1粗2精2扫闭路浮选流程处理,可获得Rb_(2)O品位0.65%的白云母精矿,白云母中的铷回收率达81.83%,云母的浮出为后续浮锂辉石创造了有利条件。Muscovite and microcline are the main rubidium-bearing minerals in 509 Daobanxi granitic pegmatite-type lithium polymetallic ore in Kunlun.In order to recover rubidium preferentially and efficiently without affecting the recovery of the main metal mineral spodumene,the mineralogical study of rubidium-bearing minerals and the flotation test of muscovite were carried out.The results show that there are many kinds of feldspar minerals in the ore,mainly albite,and it is difficult to separate microcline from it.Therefore,muscovite is a recoverable rubidium-bearing mineral in the ore.The disseminated particle size of muscovite is uneven and mostly fine,which is closely related to the dissemination of gangue minerals such as albite.It should be recovered by flotation process under the condition of full grinding,but the strong alkaline environment should be avoided to ensure that the subsequent lithium flotation is not affected.A muscovite concentrate with Rb_(2)O grade of 0.65%is obtained by one roughing-two cleaning-two scavenging closed-circuit flotation process with GYMN as inhibitor and GYR-3 as collector under the condition of sodium carbonate slurry adjustment and grinding fineness of-0.074 mm accounting for 71.5%.The recovery rate of rubidium in muscovite is 81.83%.The flotation of muscovite creates favorable conditions for the subsequent flotation of spodumene.

关 键 词：花岗伟晶岩型锂多金属矿石 含铷白云母 微斜长石 浮选 

分 类 号：TD954[矿业工程—选矿]