| 湿法稀磷酸预处理实验研究 |
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| 引用本文： | 何宾宾,张 晖,周琼波,方世祥,傅 英. 湿法稀磷酸预处理实验研究[J]. 无机盐工业, 2016, 48(8): 55 |
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| 作者姓名： | 何宾宾 张 晖 周琼波 方世祥 傅 英 |
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| 作者单位： | 1.云天化集团云南磷化集团有限公司，云南昆明 650600；2.国家磷资源开发利用工程技术研究中心 |
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| 摘 要： | 针对湿法磷酸生产过程中浓磷酸脱重（脱重金属）后过滤难等问题，提出陈化稀磷酸脱重-过滤-浓缩-脱氟-后续产品工艺。实验结果表明，当硫化钠加入量为计算量的11倍、反应温度为50 ℃、反应时间为30 min、搅拌速度为400 r/min时，脱重清酸中As的质量分数为7×10-6~8×10-6，达到1.0×10-5以下要求。
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| 关 键 词： | 湿法磷酸 重金属 硫化钠 |
Experimental study on pretreatment of dilute wet process phosphoric acid |
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| HE Bin-Bin,ZHANG Hui,ZHOU Qiong-Bo,FANG Shi-Xiang,FU Ying. Experimental study on pretreatment of dilute wet process phosphoric acid[J]. Inorganic Chemicals Industry, 2016, 48(8): 55 |
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| Authors: | HE Bin-Bin ZHANG Hui ZHOU Qiong-Bo FANG Shi-Xiang FU Ying |
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| Affiliation: | 1.Yunnan Phosphate Chemical Group Co.Ltd，Kunming 650600，China；2.National EngineeringResearch Center of phosphate Research Development and Utilization |
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| Abstract: | In allusion to the problems，such as the hard filtration of heavy metal-removed concentrated phosphoric acid in the process of wet process phosphoric acid production，the new technology‘Aged dilute phosphoric acid heavy metal removal-fil-tration-concentration-defluorination-subsequent product process’ was put forward.Results showed，when sodium sulfide dosage was 11 times of the calculation amount of computation，reaction temperature of 50 ℃，the reaction time of 30 min，and stirring speed of 400 r/min，the arsenic′s mass fraction in the clear heavy metal-removed acid was 7×10-6~8×10-6，met the re-quirement of below the 1.0×10-5. |
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| Keywords: | wet process phosphoric acid heavy metals sodium sulfide |
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