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Experimental Investigation on Leaching Metals from Red mud

XU Ting-hua

Open publisher page 13 citations

Abstract

The paper studied the conditions of red mud`s leaching by HCl and H_2SO_4. It is an optimum method to leach red mud with acid twice. The first leaching condition is: 6mol/L HCl, the liquid-solid ratio of 4:1, temperature 50℃ and time 1h. The leaching rate of Sc_2O_3 is over 80%, and the leaching rate of TiO_2 is about 1%.The second leaching condition is: 92% H_2SO_4, the acid-sludge ratio of 3:1, temperature 200℃, time 1.5h.The leaching ate of TiO_2 is 96.57%.

About this research paper

What this paper is about

The paper studied the conditions of red mud`s leaching by HCl and H_2SO_4. It is an optimum method to leach red mud with acid twice. The first leaching condition is: 6mol/L HCl, the liquid-solid ratio of 4:1, temperature 50℃ and time 1h. The leaching rate of Sc_2O_3 is over 80%, and the leaching rate of TiO_2 is about 1%.The second leaching condition is: 92% H_2SO_4, the acid-sludge ratio of 3:1, temperature 200℃, time 1.5h.The leaching ate of TiO_2 is 96.57%.

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OpenAlex reports 13 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

The paper studied the conditions of red mud`s leaching by HCl and H_2SO_4. It is an optimum method to leach red mud with acid twice. The first leaching condition is: 6mol/L HCl, the liquid-solid ratio of 4:1, temperature 50℃ and time 1h. The leaching rate of Sc_2O_3 is over 80%, and the leaching rate of TiO_2 is about 1%.The second leaching condition is: 92% H_2SO_4, the acid-sludge ratio of 3:1, temperature 200℃, time 1.5h.The leaching ate of TiO_2 is 96.57%.

Key concepts: Leaching (pedology), Red mud, Chemistry, Environmental chemistry, Metallurgy, Nuclear chemistry, Environmental science, Materials science

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