摘要
针对广西某石英岩矿进行矿物组成、嵌布特征及单矿物分析等工艺矿物学研究,结果表明,试样中石英矿物达到96.635%,杂质矿物种类多、含量少,主要为钾长石、绢云母、高岭石等;杂质矿物(高岭石、绢云母、钾长石)嵌布粒度均较细,多数杂质矿物与石英紧密连生,或呈细粒至微细粒包裹在石英中,导致石英单矿物SiO_(2)品位未达到高纯石英砂(SiO_(2)质量分数大于等于99.9%)要求,仅为99.73%。基于矿石特性,开展“磁-浮-酸浸”新工艺研究,最终可获得SiO_(2)品位为99.67%,杂质Fe_(2)O_(3)含量(质量分数)为0.011%、Al_(2)O_(3)含量为0.27%的石英精矿,满足QB/T 2196-1996《玻璃工业用石英砂的分级》五级晶质玻璃石英砂要求,达到JC/T 529-2000《平板玻璃用硅质原料》Ⅰ类优等品要求,接近JC/T 2314-2015《光伏玻璃用硅质原料》二级品需求。
Mineral composition,dissemination characteristics and single mineral analysis for a Quartzite ore in Guangxi were detected.The results showed that the quartz mineral in the sample reached 96.635%,with many kinds and less content of impurity minerals,including potassium feldspar,sericite,kaolinite and so on;impurity minerals are all fine in size,most of which are closely associated with quartz,or wrapped in quartz as fine-grained,resulting in the SiO_(2)grade of single quartz mineral not meeting the requirements of high-purity quartz sand(w(SiO_(2))≥99.9%),which is only 99.73%.Based on the quartzite characteristics,a new process research of"magnetic-flotation-acid leaching"was studied,the concentrate with SiO_(2)grade of 99.67%,Fe_(2)O_(3)content of 0.011%and Al_(2)O_(3)content of 0.27%can finally be obtained,which meets the requirements of five grade crystalline glass quartz sand for QB/T 2196-1996"glass industry",Grade I high-quality silica raw material for JC/T 529-2000"flat glass"and was close to the requirements of Grade II sillica raw material for JC/T 2314-2015"photovoltaic glass".
作者
王坤举
李强
王成行
邹坚坚
Wang Kunju;Li Qiang;Wang Chenghang;Zou Jianjian(New Steel Union Group Cheetah Chrome South Africa(CCSA),Hohhot,Inner Mongolia 010000;Institute of Resources Utilization and Rare Earth Development,Guangdong Academy of Sciences,Guangzhou,Guangdong 510650;State Key Laboratory of Rare Metals Separation and Comprehensive Utilization,Guangzhou,Guangdong 510650;Guangdong Provincial Key Laboratory of Development&Comprehensive Utilization of Mineral Resources,Guangzhou,Guangdong 510650)
出处
《非金属矿》
北大核心
2023年第5期11-14,共4页
Non-Metallic Mines
基金
“十三五”国家重点研发计划“固废资源化”重点专项(2019YFC1904202)
广东省科学院实施创新驱动发展能力建设专项资金项目(2017GDASCX-0301,2019GDASYL-0302010)。
关键词
石英岩
提纯试验
酸浸
组合工艺
quartzite
purification test
acid leaching
combined process
