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    非水溶性钾矿制取碳酸钾: 副产硅铝胶凝材料

    马鸿文 杨静 王英滨 王刚 苗世顶 冯武威 丁秋霞

    马鸿文, 杨静, 王英滨, 王刚, 苗世顶, 冯武威, 丁秋霞, 2007. 非水溶性钾矿制取碳酸钾: 副产硅铝胶凝材料. 地球科学, 32(1): 111-118.
    引用本文: 马鸿文, 杨静, 王英滨, 王刚, 苗世顶, 冯武威, 丁秋霞, 2007. 非水溶性钾矿制取碳酸钾: 副产硅铝胶凝材料. 地球科学, 32(1): 111-118.
    MA Hong-wen, YANG Jing, WANG Ying-bin, WANG Gang, MIAO Shi-ding, FENG Wu-wei, DING Qiu-xia, 2007. Preparation of Potassium Carbonate from Potash Slate of Bayan Obo: An Experimental Study. Earth Science, 32(1): 111-118.
    Citation: MA Hong-wen, YANG Jing, WANG Ying-bin, WANG Gang, MIAO Shi-ding, FENG Wu-wei, DING Qiu-xia, 2007. Preparation of Potassium Carbonate from Potash Slate of Bayan Obo: An Experimental Study. Earth Science, 32(1): 111-118.

    非水溶性钾矿制取碳酸钾: 副产硅铝胶凝材料

    基金项目: 

    教育部博士学科点基金项目 1999049114

    内蒙古自治区科技攻关项目 20020307

    矿物材料国家专业实验室开放基金课题 04103

    详细信息
      作者简介:

      马鸿文(1952-), 男, 教授, 博士生导师, 岩石学、矿物学、材料学专业, 从事矿物材料科学及制备技术、硅酸盐体系化学平衡与材料设计、结晶岩热力学与相平衡领域的教学与研究.E-mail: mahw@cugb.edu.cn

    • 中图分类号: P619.23

    Preparation of Potassium Carbonate from Potash Slate of Bayan Obo: An Experimental Study

    • 摘要: 白云鄂博稀土-铌-铁矿床上部围岩产富钾板岩, 其K2O平均含量达13.0%, 钾资源储量巨大.矿石的物相组成以微斜长石、黑云母为主, 是一种重要的非水溶性钾矿资源.实验表明, 以碳酸钠为助剂, 经中温烧结, 矿石分解率达98.2%以上.烧结物料中K2O的浸出率约70%, 且在水浸酸化反应过程中, 大部分Fe3+、Ti4+、Mn2+、Mg2+、Ca2+等杂质离子与硅铝质胶体同时沉淀析出, 为制取电子级碳酸钾提供了可能.硅铝质胶体滤渣用于制备矿物聚合材料.采用本项技术开发利用此类非水溶性钾矿资源, 符合节能高效和“清洁生产”的要求, 兼有规模化经济效益和良好的环境效益.

       

    • 图  1  富钾板岩的X射线粉末衍射图

      Fig.  1.  XRD pattern of the potash slate

      图  2  水浸酸化过程中的液相主要成分变化

      Fig.  2.  Concentrations of SiO2, Na2O, and K2O in the leaching liquor with decreasing pH value

      图  3  液相中SiO2杂质浓度随KMnO4加入量的变化

      Fig.  3.  Concentration of SiO2 in the liquor with increasing KMnO4

      图  4  实验制品(TJ-1) 的差热分析

      Fig.  4.  DTA and TGA curves of the mineral polymer product (TJ-1)

      图  5  粉煤灰原料(BF-01) 和制品(TJ-1) 的X射线粉末衍射图对比

      Fig.  5.  XRD pattern comparison of the mineral polymer product (TJ-1) with the flyash raw materials (BF-01)

      图  6  矿物聚合材料制品(TJ-1)的显微结构

      单偏光, 视域宽度2 mm

      Fig.  6.  Micro-texture of the mineral polymer product (TJ-1)

      图  7  非水溶性钾矿制取碳酸钾综合工艺流程图

      Fig.  7.  Flowsheet for preparation of potassium carbonate from the potash slate

      表  1  富钾板岩及其烧结物料的化学成分分析结果(%)

      Table  1.   Chemical analysis of the potash slate and the calcinated materials

      表  2  主要矿物相的电子探针分析结果(%)

      Table  2.   Microprobe analysis of the principal minerals

      表  3  富钾板岩粉体的烧结实验结果

      Table  3.   Representative results of the potash slate calcination experiments

      表  4  浸取液的化学成分分析结果

      Table  4.   Chemical analysis of the leaching liquor after acidification by entrancing CO2

      表  5  蒸发过程中溶液的pH值和比重的变化

      Table  5.   Variations of pH value and density of the liquor while evaporated

      表  6  实验制备的碳酸钠制品与GB210-92的对比

      Table  6.   Chemical analysis results of the prepared sodium carbonate

      表  7  实验制备的碳酸钾的分析结果

      Table  7.   Chemical analysis results of the prepared potassium carbonate

      表  8  提钾滤渣的化学成分分析结果(%)

      Table  8.   Chemical analysis of the aluminosilicate colloidal residue from the potash slate

      表  9  实验制品(TJ-3) 的耐腐蚀性的测试结果

      Table  9.   Anti-etching test results of the mineral polymer product (TJ-3)

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    • 收稿日期:  2006-06-18
    • 刊出日期:  2007-01-25

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