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时间:2020-03-26
《青海某地脉石英矿工艺矿物学研究及可选性试验.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第24卷第2期矿冶Vo1.24,No.22015年4月MINING&METALLURGYApril2015文章编号:1005-7854《2015)024)0714)7青海某地脉石英矿工艺矿物学研究及可选性试验吴逍孙红娟彭同江’鲜海洋喇继德马进海(1.西南科技大学矿物材料及应用研究所,四川绵阳621010;2.西南科技大学分析测试中心,四JIl绵阳621010;3.中国建筑材料工业地质勘查中心,青海西宁810001)摘要:高品位脉石英矿经提纯后可替代天然水晶规模生产高纯石英砂,开展其矿石性质的研究十分必要。在偏光显微镜镜下观察的基础上,结合XRD、ICP和SEM·EDS测试手段研究了青海某
2、地脉石英矿的化学成分、矿物组成、嵌布粒度及杂质元素赋存状态等工艺矿物学特征,并对矿石进行可选性试验。结果表明,该脉石英矿中两期石英粒度差异大,含有大量包裹体;脉石矿物与后期石英共生,主要由白云母、萤石和铁质矿物组成;总体嵌布特征分选类型属难解离难选型,杂质元素赋存状态复杂;矿石经过初步提纯,细粒级石英精砂SiO2纯度为99.9l%,该脉石英矿可作为高纯石英砂原料。关键词:高纯石英砂;脉石英矿;工艺矿物学中图分类号:TDgl文献标志码:Adoi:10.3969/j.issn.1005-7854.2015.02.018PR0CESSMINERALOGYSTUDYANDBENEFICIATIO
3、NTESTOFAVEINQUARTZOREFROMQINGHAIPROVICEWUXiao。SUNHong-juan‘PENGTong-jiang。一XIANHai—yangLAji—deMAn—hai(1.InstituteofMineralMateria~&Application,SouthwestUniversityofScienceandTechnology,Mianyang621010,Sichuan,China;2.AnalyticalandTestingCenter,SouthwestUniversityofScienceandTechnology,Mianyang6210
4、10,Sichuan,China;3.QinghaiBranchofChinaBuildingMaterialIndustryGeologicalSurveyCenter,Xining810001,Qinghai,China)ABSTRACT:Refinedveinquartzorecanreplacebergcrystaltoproducehighpurityquartzsandinlargescale,anditisnecessarytostudytheorepropertiesbeforedevelopingprocessingtechnology.Basedontheobserv
5、ationan—derpolarizingmicroscope,theprocessmineralogyofaquartzorefromQinghaiprovincewasstudiedwithmoderndetectingmethodslikeXRD,ICPandSEM—EDS.Themineralogicalpropertiesoftheoreincludingchemicalcorn—position,mineralassemblageanddisseminationcharacteristics,occurrencesofimpuritieswereinvestigated,an
6、dbeneficiationtestconducted.Theresultshowedthatthequartzformedintwoperiodshasgreatdifferenceinparticlesize,containingalargeamountofinclusions;ganguemineralsandlaterquartzformedinoneperiod,mainlycorn-posedofmuscovite,fluoriteandironmineral;theoverallcharacterofdisseminationindicatedthattheveinquar
7、tzorewasdificulttobeliberatedandpurified,andit’Soccurrencestateofimpurityelementsiscomplicated.Afterapreliminarypurification,thepurityofSiO2was99.91%infine-grainedquartzsand,andtheveinquartzorecanbeusedasrawmaterialfor
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