摘要
以钕铁硼废料回收的REO-SiO_2-Al_2O_3-FeO-B_2O_3多组元熔渣为原料,考察了盐酸用量、温度和时间在盐酸低温常压和高温高压两种情况下对稀土浸出率的影响。熔渣低温常压浸出较佳条件为:盐酸理论用量1.45倍、时间60min、温度85℃,稀土的浸出率为96%。熔渣高温高压浸出较佳的条件为:盐酸理论用量1.05倍、温度110~120℃、时间30min,稀土的浸出率高达98%。高温高压浸出不但能够降低盐酸用量,还可以大大缩短浸出时间。
Effects of hydrochloric acid dosage,temperature,and time on leaching rate of rare earth（RE）were investigated applying REO-SiO_2-Al_2O_3-FeO-B_2O_3 multicomponent slag recovered from NdFeB scrap as raw material.Comparative experiments were conducted at low temperature-atmospheric pressure（LTAP）and high temperature-high pressure（HTHP）respectively.Leaching rate of RE of LTAP is 96%under the optimum conditions including dosage of hydrochloric acid of 1.45 times of theoretical amount,temperature of 85 ℃,and time of 60 min.Leaching rate of RE of HTHP is 98% under the optimum conditions including dosage of hydrochloric acid of 1.05 times of theoretical amount,temperature of 110~120 ℃,and time of 30 min.Compared with LTAP,HTHP consumes less hydrochloric acid and takes shorter time to obtain the same level of leaching rate of RE.
作者
姜银举
邓永春
王永强
辛文彬
JIANG Yin-ju DENG Yong-chun WANG Yong-qiang XIN Wen-bin(School of Material and Metallurgical, Inner Mongolia University of Science and Technology, Baotou 014010, Inner Mongolia, China)
出处
《有色金属（冶炼部分）》
CAS
北大核心
2017年第6期28-31,共4页
Nonferrous Metals（Extractive Metallurgy)
基金
国家自然科学基金资助项目(51364029)
内蒙古科技大学青年人才孵化器平台资助项目(2014CY012)
