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Số người truy cập: 50,178,902

 Process Development for Recovery of Rare Earth Elements from Red Mud
Tác giả hoặc Nhóm tác giả: Ali D.S., Juzsakova T., Cretescu I, Sluser B., Le Phuoc Cuong
Nơi đăng: Conference: the 11th edition of the International Scientific Conference "Air ad Water - Components of the Environment"; Số: March 2019 DOI: 10.13140/RG.2.2.30608.87040;Từ->đến trang: 339;Năm: 2019
Lĩnh vực: Môi trường; Loại: Báo cáo; Thể loại: Quốc tế
TÓM TẮT
Huge quantity of red mud is being generated by aluminum industry which is a potentially hazardous material depending on its pH value and creates serious environmental pollution. The purpose of the present work was to develop and improve technological steps to recover the rare earth elements (REEs) such as (Sc, La, Y) from the Hungarian red mud which is considered as a waste material. Red mud (RM) samples were collected from the Hungarian red mud, Ajka, MAL company. Several parameters such as leaching agents, contact time, temperature, and solid to liquid ratio (S/L) are being investigated in order to achieve an optimum REE recovery from the red mud. The REEs recovery procedure includes using a combination of technological steps, i.e. acid leaching, solvent extraction and ion exchange . The leaching with acids was investigated in our study. Hydrochloric (HCl), sulphuric (H2SO4) and nitric (HNO3) acids were used for leaching. The chemical composition of leaching solutions was investigated by ICP-OES techniques. The effect of parameters including different acid concentrations, acid compositions, leaching time were studied
ABSTRACT
[ 2019\2019m04d030_15_52_24(1,3)Program-CAA-2019-1.pdf ]
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