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Experimental Study on Alkali Removal and Titanium Extraction from Red Mud with Tartaric Acid by Bayer Process
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Wenbao LIU1, 2, Rui DING1, Weichao LI1, Wengang LIU1, Yanbai SHEN1, Qin ZHANG2
Mining and Metallurgical Engineering | 2025, 45(4) : 141 - 146
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Mining and Metallurgical Engineering | 2025, 45(4): 141-146
• METALLURGY •
Experimental Study on Alkali Removal and Titanium Extraction from Red Mud with Tartaric Acid by Bayer Process
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Wenbao LIU1, 2, Rui DING1, Weichao LI1, Wengang LIU1, Yanbai SHEN1, Qin ZHANG2
Affiliations
  • 1.School of Resources and Civil Engineering, Northeastern University, Shenyang 110819, Liaoning, China
  • 2.Guizhou Academy of Sciences, Guiyang 550001, Guizhou, China
Published: 2025-08-01 doi: 10.3969/j.issn.0253-6099.2025.04.026
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With tartaric acid as a leaching agent, an experiment was conducted to investigate the effects of different leaching conditions on the leaching rates of sodium and titanium from red mud. The process parameters were optimized by orthogonal experiments, and the leaching mechanism was then analyzed in combination with the study of leaching kinetics and the properties of leaching residues. It can be seen from the leaching test and orthogonal experiment that with tartaric acid at a concentration of 1.00 mol/L, leaching temperature of 90 ℃, liquid-solid ratio of 8 mL/g, and leaching time of 60 min, the leaching rates of sodium and titanium from red mud can reach 93.50% and 76.66%, respectively. XRD analysis of red mud before and after tartaric acid leaching shows that the sodium in the leaching solution mainly comes from cancrinite and sodium hydroxide in the Bayer process, while the titanium mainly comes from perovskite and secondary titanium that dissolves and re-precipitates on the surface of red mud during the Bayer process. The leaching kinetics analysis shows that both alkali removal and titanium leaching from red mud conform to an unreacted shrinking core model, and the processes of alkali removal and titanium leaching are mainly controlled by interfacial chemical reactions.

red mud  /  Bayer process  /  alkali removal  /  titanium  /  tartaric acid  /  leaching kinetics  /  organic acid leaching
Wenbao LIU, Rui DING, Weichao LI, Wengang LIU, Yanbai SHEN, Qin ZHANG. Experimental Study on Alkali Removal and Titanium Extraction from Red Mud with Tartaric Acid by Bayer Process[J]. Mining and Metallurgical Engineering, 2025 , 45 (4) : 141 -146 . DOI: 10.3969/j.issn.0253-6099.2025.04.026
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Year 2025 volume 45 Issue 4
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Article Info
doi: 10.3969/j.issn.0253-6099.2025.04.026
  • Receive Date：2025-02-10
  • Online Date：2026-03-05
  • Published：2025-08-01
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  • Received：2025-02-10
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Affiliations
    1.School of Resources and Civil Engineering, Northeastern University, Shenyang 110819, Liaoning, China
    2.Guizhou Academy of Sciences, Guiyang 550001, Guizhou, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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