含泥、铁致色物重晶石粉提纯增白技术研究  

Research on Technology of Purification and Whitening for Barite Powder Containing Color-causing Materials of Mud and Ferric Oxide

作　　者：李雪琴[1] 杨光[1] 李佩悦[1] 李健[1] 

机构地区：[1]武汉理工大学资源与环境工程学院,武汉430070

出　　处：《非金属矿》2010年第6期4-6,33,共4页Non-Metallic Mines

基　　金：国家科技部科技人员服务企业行动计划(2009GJC10027);武汉理工大学自主创新研究基金在校研究生自由探索创新项目(2010-ZY-ZH-004)

摘　　要：采用X光衍射(XRD)、透反两用显微镜、荧光光谱以及白度仪等检测技术对含泥、铁致色物重晶石粉样进行表征分析。分别用酸碱浸出的方法去除重晶石中的致色物质。结果表明:当H2SO4浓度为1.6mol/L、络合剂浓度为0.1mol/L,90℃酸浸反应3.5h、洗涤至pH值为6～7;加碱调pH值至12、90℃下再反应2h,洗涤、过滤、烘干,白度可达到84.72%。重晶石化学含量由提纯前的95.60%提高至97.29%,主要致色物Fe3+全部去除,其他致色物明显降低。The properties of barite containing color-causing materials of mud and ferric oxide had been characterized by XRD,polarized-light microscopy and whiteness meter.The main color-causing substances of barite had been removed by acid and alkali leaching.The results showed that the whiteness of purified barite powder reached 84.72% when the concentration of H2SO4 was 1.6 mol/L,complexing agent was 0.1mol/L,acid leaching time was 3.5h when the temperature was 90℃.and then the pH value of sample was washed to 6-7,readjusted with alkali to 12 and reacted 2h under 90℃.Then the sample was washed again,filtered and dried.The chemical contents of barite was increased from 95.60% to 97.29%,and the main colorcausing substance Fe3＋ was removed competely and other color-causing substances were decreased significantly.

关 键 词：含泥铁致色物 重晶石 表征技术 酸碱浸出 除铁 

分 类 号：TD97[矿业工程—选矿]