| 湿法磷酸生产过程中控制硫酸钙结晶的研究 |
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| 引用本文： | 王良士,龙志奇,于瀛,朱兆武,黄小卫,韩业斌,崔大立.湿法磷酸生产过程中控制硫酸钙结晶的研究[J].化工矿物与加工,2008,37(4):1-4. |
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| 作者姓名： | 王良士 龙志奇 于瀛 朱兆武 黄小卫 韩业斌 崔大立 |
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| 作者单位： | 北京有色金属研究总院稀土材料国家工程研究中心有研稀土新材料股份有限公司,北京,100088 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 采用河北矾山磷矿为原料在间歇实验装置中进行二水物湿法礴酸模拟生产,研究了湿法磷酸生产工艺条件及活性添加剂对硫酸钙晶体平均尺寸和结晶形态的影响.研究结果表明,较高的体系温度及低的磷酸质量分数均有利于硫酸钙晶体的长大;控制合适的SO4 2-质量分数有利于硫酸钙晶体的生长,在硫酸化学计量比为1.1时可形成易于洗涤和过滤的类球状聚晶;添加不同活性添加剂时,可得到不同形态的硫酸钙结晶.
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| 关 键 词： | 湿法磷酸 活性添加剂 结晶 |
| 文章编号： | 1008-7524(2008)04-0001-04 |
| 修稿时间： | 2007年11月19 |
Study on the crystallization of calcium sulfate during the course of phosphoric acid production by wet-process |
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| WANG Liang-shi,LONG zhi-qi,YU Ying,ZHU Zhao-wu,HUANG Xiao-wei,HAN Ye-bin,CUI Da-li.Study on the crystallization of calcium sulfate during the course of phosphoric acid production by wet-process[J].Industrial Minerals and Processing,2008,37(4):1-4. |
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| Authors: | WANG Liang-shi LONG zhi-qi YU Ying ZHU Zhao-wu HUANG Xiao-wei HAN Ye-bin CUI Da-li |
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| Affiliation: | WANG Liang-shi,LONG zhi-qi,YU Ying,ZHU Zhao-wu,HUANG Xiao-wei,HAN Ye-bin,CUI Da-li (National Engineering Research Center for Rare Earth Materials,General Research Institute for Nonferrous Metals,, Grirem Advanced Materials Co.Ltd.,Beijing 100088,China) |
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| Abstract: | Phosphate ores coming from Fanshan Mine in Hebei province were subject to simulated production of phosphoric acid by Dihydrate Process in intermittent lab.apparatus and the effect of process conditions and active additives on the crystallization of calcium sulfate during the wet-process of phosphoric acid production was studied.The results indicate that it is beneficial for the gypsum crystal growth to have higher temperature,lower concentration of phosphoric acid and appropriate SO42-concentration.The gyps... |
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| Keywords: | wet-process phosphoric acid active additives crystallization |
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