| 湿法磷酸净化预处理的实验研究 |
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| 引用本文： | 孟永涛,乔文芩,代贺朋,张彩绵,张志强. 湿法磷酸净化预处理的实验研究[J]. 广州化工, 2014, 0(5): 66-67,89 |
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| 作者姓名： | 孟永涛 乔文芩 代贺朋 张彩绵 张志强 |
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| 作者单位： | [1]青海省化工设计研究院有限公司,青海西宁810008 [2]青海大学化工学院,青海西宁810016 |
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| 摘 要： | 研究了以化学沉淀法对湿法磷酸进行预处理,脱除湿法磷酸中的硫酸根以及重金属砷。考察了搅拌速度、脱硫剂种类、脱硫剂用量、脱砷剂用量等因素对湿法磷酸中硫、砷的脱除率及磷收率的影响。实验结果表明,化学沉淀法可以有效降低湿法磷酸中的硫及砷的含量,磷酸经化学沉淀法预处理后,脱硫率可达60%,脱砷率可达73%。
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| 关 键 词： | 湿法磷酸 化学沉淀法 脱硫 脱砷 |
Experimental Study on Purification Pretreatment of WPA |
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| Affiliation: | MENG Yong - tao, QIAO Wen - qin, DAI He -peng, ZHANG Cai - mian, ZHANG Zhi - qiang (1 Qinghai Province Research and Design Institute of Chemical Industry, Qinghai Xining 810008; 2 Chemical Technology Institute of Qinghai University, Qinghai Xining 810016, China) |
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| Abstract: | The chemical precipitation for wet -process phosphoric acid pretreatment, removing the wet -process phosphoric acid sulfur and arsenic were researched. The influence of stirring rate, desulfurizer species, amount of desulfurizer and dearsenic on the recovery ratio of phosphorus and removal of sulfur and arsenic was studied. The experimental results showed that chemical precipitation can effectively reduce the wet -process phosphoric acid sulfur and heavy metals of arsenic, the contents of phosphoric acid by chemical precipitation after pretreatment, desulfurization rate can amount to 60%. and takin~ off the arsenic rate can amount to 73%. |
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| Keywords: | wet - process phosphoric acid chemical precipitation desulfurization dearsenication |
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