中低品位硅钙质磷矿石双反浮选试验研究

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英文篇名：Study on Double Reverse Flotation of a Low Grade Siliceous-calcareous Phosphate Ore 作者：罗金洋 ; 张覃 ; 李龙江 英文作者：LUO Jinyang;ZHANG Qin;LI Longjiang;Mining College,Guizhou University;National & Local Joint Laboratory of Engineering for Effective Utilization of Regional Mineral Resources from Karst Areas;Guizhou Key Laboratory of Comprehensive Utilization of Non-metallic Mineral Resources; 关键词：硅钙质磷矿石 ; 白云石 ; 石英 ; 双反浮选 ; 捕收剂 ; 物理吸附 英文关键词：siliceous-calcareous phosphate ore;;dolomite;;quartz;;double reverse flotation;;collector;;physical adsorption 中文刊名：KCBH 英文刊名：Conservation and Utilization of Mineral Resources 机构：贵州大学矿业学院;喀斯特地区优势矿产资源高效利用国家地方联合工程实验室;贵州省非金属矿产资源综合利用重点实验室; 出版日期：2018-05-14 13:20 出版单位：矿产保护与利用 年：2018 期：No.214 基金：贵州省科学技术基金(黔科合JZ字[2014]2009号);; 贵州省重大专项[(2011)6023号] 语种：中文; 页：KCBH201802012 页数：6 CN：02 ISSN：41-1122/TD 分类号：63-68

摘要

针对贵州某中低品位硅钙质磷矿石,采用捕收剂GJBW和捕收剂AY进行双反浮选试验,考察磨矿细度和药剂制度对浮选的影响。试验结果表明:在磨矿细度为-0.075 mm含量占78.08%的条件下,粗选作业添加7.5 kg/t混酸(硫酸与磷酸体积比为2∶1)和0.3 kg/t GJBW,精选作业添加7.5 kg/t混酸和0.4 kg/t AY,进行双反浮选试验,获得磷精矿中P_2O_5品位和P_2O_5回收率分别为30.27%和81.32%的浮选指标。正交试验结果表明:混酸、GJBW和AY间的交互作用对精矿浮选指标影响不大。红外光谱分析结果说明捕收剂AY在石英表面的吸附主要是物理吸附。
        In this paper,the effect of the grinding fineness and the reagent regime on the flotation of low grade calcareous-siliceous phosphate in Guizhou was investigated by using the collector AY and GJBW. The results showed that when the grinding fineness was 78. 08% below 0. 075 mm,the optimal reagent regime was 7. 5 kg/t mixed acid( sulphuric acid and phosphoric acid volume ratio of 2∶1) with 0. 3 kg/t GJBW for roughing,and 7. 5 kg/t mixed acid with 0. 4 kg/t AY for concentrating. Under these conditions with the double reverse flotation test procedure,final flotation phosphate concentrate with phosphorus pentoxide grade of 30. 27% and recovery rate of 81. 32%was obtained. The results of orthogonal tests showed that the interaction among mixed acid,GJBW and AY had little effect on the concentrate. The results of FTIR analysis showed that the adsorption of AY onto quartz was mainly physical adsorption.

引文

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