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投稿时间：2017-04-26 修订日期：2017-04-28
投稿时间：2017-04-26 修订日期：2017-04-28
中文摘要: 采用磷酸铁法对深海粘土硫酸浸出液进行除铁试验，考察磷酸用量、终点pH、沉铁温度等因素的影响，并与中和除铁进行对比。结果表明，磷酸铁法除铁最佳条件为：磷酸用量为理论值的1.2倍、除铁温度30 ℃、终点pH=2.5，除铁率达94.77%，重稀土Y3 损失率仅1.37%，与中和沉淀法相比，除铁效果相近，但Y3 损失率明显降低，且具有反应快、易过滤等优点。
Abstract:New method to remove iron from sulfuric acid leaching solution of pelagic clay by iron phosphate method (IPM) was studied. The effects of phosphate dosage, pH value of terminal point, and temperature on iron removal were investigated and compared with neutralization precipitation method (NPM). The results show that iron removal rate is 94.77% and Y3 loss rate is only 1.37% under the optimum conditions including phosphate dosage of 1.2 times of theoretical value, temperature of 30℃, and pH value of terminal point of 2.5. Iron removal rate of IPM is close to NPM, but Y3 loss rate of IPM is far lower than that of NPM. IPM also has the advantages of high reaction rate and easy filtering performance.
keywords: pelagic clay sulfuric acid leaching solution iron phosphate neutralization precipitation iron removal
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基金项目:广东省科技计划项目（2016B070701022，2016B090931003，2016B020240004）；中国地质调查局大洋调查与研究项目（GZH201100303-05）
引用文本：
孙常永,张魁芳,曹洪杨,朱克超,朱薇,刘志强.深海粘土硫酸浸出液中除铁试验[J].有色金属（冶炼部分）,2017(10):19-22.
SUN Chang-yong,ZHANG Kui-fang、,CAO Hong-yang,ZHU Ke-chao,ZHU Wei,LIU Zhi-qiang、、.Study on Removal of Fe(Ⅲ) from Sulfuric Acid Leaching Solution of Pelagic Clay[J].Nonferrous Metals (Extractive Metallurgy),2017(10):19-22.
孙常永,张魁芳,曹洪杨,朱克超,朱薇,刘志强.深海粘土硫酸浸出液中除铁试验[J].有色金属（冶炼部分）,2017(10):19-22.
SUN Chang-yong,ZHANG Kui-fang、,CAO Hong-yang,ZHU Ke-chao,ZHU Wei,LIU Zhi-qiang、、.Study on Removal of Fe(Ⅲ) from Sulfuric Acid Leaching Solution of Pelagic Clay[J].Nonferrous Metals (Extractive Metallurgy),2017(10):19-22.
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