Shaotao Cao
Research Subjects
Shaotao Cao has a total of 10 co-authors. Here are the top co-authors by number of shared publications:
Bingxin Zhou
Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
1 shared publication- Bingxin Zhou
School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
1 shared publication Bo Li
Coalmine Alumina Co Ltd, Sanmenxia 472100, Henan, Peoples R China
1 shared publicationFangfang Chen
Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
1 shared publication- Fangfang Chen
School of Rare Earths, University of Science and Technology of China, Hefei 230026, China
1 shared publication Fangfang Zhang
Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
1 shared publication
Latest Publications
- 1 November 2019
- Published by Elsevier in Journal of Crystal Growth
- Vol. 525
Nucleation, growth and aggregation kinetics of monosodium aluminate hydrate from unseeded sodium aluminate solution
- 1 November 2019
- Published by Elsevier in Journal of Crystal Growth
- Vol. 525
Nucleation, growth and aggregation kinetics of monosodium aluminate hydrate from unseeded sodium aluminate solution
- Open Access
Recovery of Alkali from Bayer Red Mud Using CaO and/or MgO
Recovering alkali from Bayer red mud is crucial for storage security, resource utilization and environmental protection. In this study, the addition of MgO and/or CaO was conducted to recover alkali from red mud with a hydrothermal method for the first time. A synergistic result with a residual Na2O/SiO2 weight ratio of 0.03 was obtained by adding the blend of CaO and MgO at an appropriate temperature. MgO was found to be more temperature-dependent than CaO when substituting Na2O from red mud due to their different hydration processes. The alkali recovery was controlled by a reaction at a temperature of <200 °C and by internal diffusion at a higher temperature for MgO, but controlled by internal diffusion for CaO in the whole temperature range studied. The formation of hydrotalcite-like compounds with a loose structure was verified with the help of XRD, FTIR, and SEM-EDS. It was proved that both the reaction kinetics and the characteristics of solid products have a significant influence on the recovery of alkali.
Open AccessRecovery of Alkali from Bayer Red Mud Using CaO and/or MgO
Recovering alkali from Bayer red mud is crucial for storage security, resource utilization and environmental protection. In this study, the addition of MgO and/or CaO was conducted to recover alkali from red mud with a hydrothermal method for the first time. A synergistic result with a residual Na2O/SiO2 weight ratio of 0.03 was obtained by adding the blend of CaO and MgO at an appropriate temperature. MgO was found to be more temperature-dependent than CaO when substituting Na2O from red mud due to their different hydration processes. The alkali recovery was controlled by a reaction at a temperature of <200 °C and by internal diffusion at a higher temperature for MgO, but controlled by internal diffusion for CaO in the whole temperature range studied. The formation of hydrotalcite-like compounds with a loose structure was verified with the help of XRD, FTIR, and SEM-EDS. It was proved that both the reaction kinetics and the characteristics of solid products have a significant influence on the recovery of alkali.