Treatment of low-concentration lye of red mud mound

Qixiu Zhang; Aiping Luo; Chongguang Shi; Qicai Zheng

doi:10.1007/s11771-999-0001-y

Journal of Central South University ›› 1999, Vol. 6 ›› Issue (2) : 73 -77. DOI: 10.1007/s11771-999-0001-y

Membrane Technology In Metallurgical Processes

Treatment of low-concentration lye of red mud mound

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Abstract

Based on the systematic experiment of treating low-concentration lye in the red-mud mound, several key problems in the selection of technological process for industrial trial, such as aluminum precipitation in the process of electrodilalysis, dealuminum with carbon dioxide at low temperature, the selection of the technology for electrodialysis and estimation of benefit of the trial production line, are studied in the paper. For a production line with the handling capacity of 50 m³/h, its annual direct economic benefit can reach RMB 4 million yuan, calculated by 300 working days a year.

Keywords

electrodialysis / dealuminum with CO₂ / recovery / alkali / alumina

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Qixiu Zhang, Aiping Luo, Chongguang Shi, Qicai Zheng. Treatment of low-concentration lye of red mud mound. Journal of Central South University, 1999, 6(2): 73-77 DOI:10.1007/s11771-999-0001-y

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References

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[1]	YangChongyuMetallurgy of light metal, 1991, Beijing, Metallurgical Industrial Press(in Chinese)

[2]	ZhangQixiu, LuoAiping, ShiCongguang, et al.. Study on treating redmud backerwater of alumina factory with membrane technology in pilot plant scale(I)—Investigation of desalting process. J Central South University Technology, 1997, 28(2): 134-137(in Chinese)

[3]	ZhangQixiu, LuoAiping. Investigation on treatment process of backwater of red-mud by electrodialysis. J Central South University Technology, 1997, 28(5): 440-443(in Chinese)