| 钾长石-萤石-硫酸-氟硅酸体系提钾工艺研究 |
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| 引用本文： | 兰方青,旷戈.钾长石-萤石-硫酸-氟硅酸体系提钾工艺研究[J].化工生产与技术,2011,18(1):19-21,28,8. |
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| 作者姓名： | 兰方青 旷戈 |
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| 作者单位： | 福州大学化学工程技术研究所,福州,350108 |
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| 摘 要： | 实验研究了钾长石-萤石-硫酸-氟硅酸体系提钾工艺过程.结果表明,该体系下提钾优化工艺条件为:m(萤石):m(钾长石)=0.35:1,质量分数为60%的硫酸、10%的氟硅酸用量分别按,m(H2SO4):m(钾长石)=1.35:1、m(H2SiF6):m(钾长石)=0.162:1,反应温度为120℃、反应时间为3.5 h,...
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| 关 键 词： | 钾长石 氟硅酸 低温分解 钾肥 |
The Study on Extracting Potassium Process of Potash Feldspar-Fluorite-Sulphuric Acid-Fluosilicic Acid System |
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| Lan Fangqing,Kuang Ge.The Study on Extracting Potassium Process of Potash Feldspar-Fluorite-Sulphuric Acid-Fluosilicic Acid System[J].Chemical Production and Technology,2011,18(1):19-21,28,8. |
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| Authors: | Lan Fangqing Kuang Ge |
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| Affiliation: | (Chemical Engineering technology research institute,Fuzhou University,Fuzhou 350108) |
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| Abstract: | The experiment has studied the system of potash feldspar-fluorite-sulphuric acid-fluosilicic acid to extract potassium.The study has showed that the best extracting potassium process condition is m(fluorite):m(potash feldspar)=0.35:1,the quantities of 60% sulphuric acid and the 10% fluosilicic acid are m(H2SiF6):m(potash feldspar) =1.35:1 and m(H2SiF6):m(potash feldspar)=0.162:1 respectively,the reaction time is 3.5 h,reaction temperature is 120 ℃.In this condition,the highest extraction yield of potassium can reach to 97.2%.Considering fluorine chemistry eroding potash feldspar in low temperature condition,the cycling use of fluorineelement in the followed process can reduce the cost of extracting potassium,which has a favorable industry prospect. |
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| Keywords: | potash feldspar fluosilicic acid low temperature decompose potash fertilizer |
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