Xianlin Hou

Northeastern University

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Haiyan Yu

Northeastern University

Xiaolin Pan

Northeastern University

Tao Jiang

Henan University of Science and Technology

Yu Lu

Corteva (United States)

Ganfeng Tu

Northeastern University

Ren Zhang

Commercial Aircraft Corporation of China (China)

Zhang Ren

Beihang University

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Universidad del Noreste

Northeastern University

Commercial Aircraft Corporation of China (China)

Beihang University

National University of Defense Technology

Nanjing University of Information Science and Technology

Baylor University

Hendrick Medical Center

Beijing Union University

Federal Reserve Bank of Dallas

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Effect of Lime Addition During Digestion on Stability of Digested Liquor of Diasporic Bauxite

Light Metals (2016)

Tao Jiang Xiaolin Pan Haiyan Yu Xianlin Hou Ganfeng Tu

The hydrolysis loss of digested alumina from bauxite reentering into the bauxite residue has always been the research focus during the Bayer process. The stability of sodium aluminate solution after digestion with different lime additions during the dilution process from a diasporic bauxite was studied, and the mechanism by which the lime addition affects was also discussed. The molar ratio, silica index and hydrolysis degree of diluted liquor after digestion are highly affected by the lime addition, and the corresponding alumina extraction efficiency of bauxite and the Na2O to SiO2 ratio of bauxite residue are changed. The stability of diluted liquor is firstly increased by the lime addition below 15% of the bauxite, and then decreased as the lime addition increases. The mineral content and proportion of desilication products precipitating during digestion are the main factors affecting the stability of sodium aluminate solution after digestion.

Sodium aluminate

Bayer process

Digestion

Residue (chemistry)

Aluminate

10.1002/9781119274780.ch8

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Citations (1)

Effect of Lime Addition during Digestion on Stability of Digested Liquor of Diasporic Bauxite

Light Metals (2016)

Tao Jiang Xiaolin Pan Haiyan Yu Xianlin Hou Ganfeng Tu

Sodium aluminate