| 磷石膏综合利用副产物碳酸钙渣的深加工研究 |
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| 引用本文： | 曾光,胡宏.磷石膏综合利用副产物碳酸钙渣的深加工研究[J].贵州化工,2009,34(2). |
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| 作者姓名： | 曾光 胡宏 |
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| 作者单位： | 1. 贵州大学化学与化工学院,贵州,贵阳,550003
2. 瓮福(集团)有限责任公司,贵州,福泉,550501 |
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| 摘 要： | 对磷石膏综合利用生产硫酸铵的副产物碳酸钙渣的处理工艺进行了研究.以硝酸、碳酸氢铵和氨水为原料,考察了反应温度等因素对反应时钙转化率的影响,通过正交实验确定了反应的工艺条件;碳酸钙渣得到深加工,有利于进一步完善磷石膏的综合利用.
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| 关 键 词： | 磷石膏 碳酸钙渣 碳酸氢铵和氨水 硝酸 |
Utilization of calcium carbonate residue in the process of comprehensive utilization of phosphogypsum |
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| Zeng guang,Hu hong.Utilization of calcium carbonate residue in the process of comprehensive utilization of phosphogypsum[J].Guizhou Chemical Industry,2009,34(2). |
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| Authors: | Zeng guang Hu hong |
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| Affiliation: | 1.College of Chemical Engineering;GU;Guiyang 550003 China;2.Wengfu Group;Fuquan;Guizhou;550501 China |
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| Abstract: | The method on the utilization of calcium carbonate residue obtained in the process of preparation of ammonium sulfuric acid from phosphogypsum approach,was studied in this paper.The calcium carbonate residue was firstly converted into calcium nitric acid in nitric acid solution.And the as prepared calcium nitric acid was further changed into calcium carbonate using ammonium bicarbonate and ammonia as the carbo-nization reagents.The utilization of calcium carbonate residue was helpful to prevent polluting en... |
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| Keywords: | phosphogypsum calcium carbonate residue ammonium bicarbonate and ammonia nitric acid |
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