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投稿时间：2020-07-06 修订日期：2020-07-13 录用日期：2020-07-15 网络发布日期：2020-10-31
投稿时间：2020-07-06 修订日期：2020-07-13 录用日期：2020-07-15 网络发布日期：2020-10-31
中文摘要: 研究了NaClO3氧化-NaOH沉淀联合法对钕铁硼废料盐酸优溶液中Fe2+去除效果，考察了氯酸钠用量、反应终点pH、反应温度、反应时间和陈化时间对Fe2+去除率的影响。结果表明，在下述最佳工艺条件下，Fe2+的去除率超过99%，除铁后滤液中Fe2+含量小于120 mg/L：NaClO3用量为理论计算质量1.1倍、反应温度70 ℃、反应时间2 h、沉淀终点pH=3.50、陈化时间8 h。该工艺已成功应用于本公司盐酸优溶液除Fe2+工艺中。
中文关键词: NaClO3 NaOH；钕铁硼废料；盐酸优溶液；除铁(Ⅱ）
Abstract:Fe2+ removal efficiency of NdFeB waste hydrochloric acid priority solution by sodium chlorate oxidation - NaOH precipitation combined process was studied. Effects of sodium chlorate dosage, pH value of reaction end point, reaction temperature, reaction time and aging time on iron removal rate were investigated. The results show that Fe2+ removal rate is 99% above and Fe2+ content in filtrate solution is 120 mg/L below under the optimum conditions including sodium chlorate dosage of 1.1 times of theoretical dosage, reaction temperature of 70 ℃, reaction time of 2 h, pH value of precipitation end point of 3.50, and aging time of 8 h. The process has been successfully applied in our company to remove Fe2+ from hydrochloric acid priority solution.
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基金项目:2017年赣州市科技计划项目（赣市财教字[2017]179号）
引用文本：
邓曹锋,肖卫东,熊永德,谢春宝,胡巍钟,陈皆良.NaClO3氧化—NaOH沉淀联合法去除钕铁硼废料盐酸优溶液中的铁(Ⅱ)[J].有色金属（冶炼部分）,2020(11):30-34.
Deng Cao-feng,Xiao Wei-dong,Xiong Yong-de,Xie Chun-bao,Hu Wei-zhong,Chen Jie-liang.Removal of Iron(Ⅱ) from NdFeB Waste Hydrochloric Acid Priority Solution by NaClO3 Oxidation-NaOH Precipitation Combination Process[J].Nonferrous Metals (Extractive Metallurgy),2020(11):30-34.
邓曹锋,肖卫东,熊永德,谢春宝,胡巍钟,陈皆良.NaClO3氧化—NaOH沉淀联合法去除钕铁硼废料盐酸优溶液中的铁(Ⅱ)[J].有色金属（冶炼部分）,2020(11):30-34.
Deng Cao-feng,Xiao Wei-dong,Xiong Yong-de,Xie Chun-bao,Hu Wei-zhong,Chen Jie-liang.Removal of Iron(Ⅱ) from NdFeB Waste Hydrochloric Acid Priority Solution by NaClO3 Oxidation-NaOH Precipitation Combination Process[J].Nonferrous Metals (Extractive Metallurgy),2020(11):30-34.
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