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Y^(3+)损失率仅1.37%,与中和沉淀法相比,除铁效果相近,但Y^(3+)损失率明显降低,且具有反应快、易过滤等优点。
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 opt conditions including phosphate dosage of 1.2 times of theoretical value, temperature of 30℃, and pH of terminal point of 2.5. Iron removal rate of IPM is close to NPM, but Y3＋loss rate of IPM is far than that of NPM. IPM also has the advantages of high reaction rate and easy filtering performance. value lower
作者
孙常永
张魁芳
曹洪杨
朱克超
朱薇
刘志强
SUN Chang-yong ZHANG Kui-fang CAO Hong-yang ZHU Ke-chao ZHU Wei LIU Zhi-qiang(Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China Guangdong Province Research Institute of Rare Metals, Guangzhou 510650, China Guangdong Province Key Laboratory of Rare Earth Development and Application, Guangzhou 510650, China Guangzhou Marine Geological Survey, Guangzhou 510075, China)
出处
《有色金属（冶炼部分）》
CAS
北大核心
2017年第10期19-22,共4页
Nonferrous Metals（Extractive Metallurgy)
基金
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)
关键词
深海粘土
硫酸浸出液
磷酸铁
中和沉淀
除铁
pelagic clay
sulfuric acid leaching solution
iron phosphate
neutralization precipitation
iron removal
