Method and device for recovering iron from red mud

The invention discloses a method and a device for recovering iron from red mud, and the specific process is as follows: mineralizing red mud slurry in a red mud pipeline of an aluminum oxide workshop, feeding the mineralized red mud slurry into an electrolysis system for electrolysis, controlling th...

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Bibliographic Details
Main Authors LIAN YICHENG, LIU XIU, LI SHUAI, LIU WANCHAO, ZHOU XIAOFENG, YU JIAN, YAN FEIFEI, YU WEIQI
Format Patent
LanguageChinese
English
Published 04.04.2023
Subjects
APPARATUS THEREFOR
CHEMISTRY
ELECTROLYTIC OR ELECTROPHORETIC PROCESSES
METALLURGY
PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY ORREFINING OF METALS
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Summary:The invention discloses a method and a device for recovering iron from red mud, and the specific process is as follows: mineralizing red mud slurry in a red mud pipeline of an aluminum oxide workshop, feeding the mineralized red mud slurry into an electrolysis system for electrolysis, controlling the concentration of caustic alkali in an electrolyte to be 5-25mol/L and the electrolysis voltage to be 1.3-1.6 v, the temperature of the red mud slurry in the electrolysis system is kept between 110 DEG C and 120 DEG C, electrolysis is stopped after electrolysis is conducted for 2-8 h, iron on a cathode of the electrolysis system is stripped, and a high-purity iron product is obtained. By utilizing the method, the purity of the iron product recovered from the red mud is higher, the energy consumption is lower, and the method is more environment-friendly. 本发明公开了一种从赤泥中回收铁的方法及装置，具体过程为：将氧化铝车间赤泥管道中的赤泥浆液进行矿化，对矿化后的赤泥浆液送入电解系统进行电解，控制电解液中苛性碱浓度为5-25mol/L，电解电压为1.3v-1.6v之间，电解系统内的赤泥浆液温度维持在110-120℃之间，电解2-8h后停止电解，对电解系统的阴极上的铁进行剥离处置
Bibliography:Application Number: CN202211444063