Coordination mechanism of aluminum with oxalate and fluoride in aluminum crystallization from vanadium extraction wastewater

Liu, Zishuai; Sheng, Muling; He, Ying; Zhou, Hepeng; Huang, Jing; Luo, Xianping; Zhang, Yimin

doi:10.1016/j.molliq.2021.117992

Cited by 10 publications

(2 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…From the ∆G calculation results of the chemical reaction, the binding capacity of S 2− and Cu 2+ was greater than that of HS − and Cu 2+ . This illustrates that achieving the selective separation and recovery of copper mainly depended on the chemical reaction of S 2− with Cu 2+ [32].…”

Section: Chemical Reaction Energy Calculation Analysismentioning

confidence: 85%

Selective Separation Recovery of Copper and Arsenic from the Leaching Solution of Copper Soot

Yang

Zhang

Zhou

et al. 2022

Metals

Self Cite

View full text Add to dashboard Cite

Through the main chemical reaction of metal ions and S2−, a new type of sulfide precipitant was first prepared and used to realize the selective separation recovery of copper and arsenic from the leaching solution of copper soot. It is proven by experimental results that the prepared sulfide precipitant could realize the efficient separation recovery of copper and arsenic. Indeed, the copper sulfide slag with Cu grade of about 47% and arsenic trisulfide slag with As operation recovery of about 98% could be obtained. The results of chemical reaction energy calculation analysis and SEM images analysis illustrate that the selective separation recovery of copper and arsenic mainly depended on the chemical reactions of sulfide precipitation. The ions of S2− and HS− produced by the prepared sulfide precipitant could react with Cu2+ and arsenic components to form CuS and As2S, respectively, in the copper and arsenic recovery procedure. In addition, the smaller solubility of CuS and the lower rate of S2− engendered by the sulfide precipitant were key to achieving the efficient separation and recovery of copper and arsenic.

show abstract

Section: Chemical Reaction Energy Calculation Analysismentioning

confidence: 85%

Selective Separation Recovery of Copper and Arsenic from the Leaching Solution of Copper Soot

Yang

Zhang

Zhou

et al. 2022

Metals

Self Cite

View full text Add to dashboard Cite

show abstract

“…These approaches serve as alternatives to conventional chemical methods, thereby minimizing the environmental ramifications associated with metal manufacturing. Physical methods such as zone refining [6][7][8][9], vacuum distillation [10,11], and Cz single-crystal growth [12,13] have gained considerable prominence over chemical methods such as extraction-crystallization [14], chlorination [15], and electrolysis [16]. Researchers have increasingly devoted their attention to investigating the efficacy and applicability of these physical methods in achieving elevated levels of metal purity.…”

Section: Introductionmentioning

confidence: 99%

Purification of High-Purity Tin via Vertical Zone Refining

Wen

Peng

et al. 2023

Separations

View full text Add to dashboard Cite

The present investigation delves into the potential of vertical zone refining as an effective purification technique for achieving high-purity tin (Sn) metal. The utilization of vertical zone refining offers distinct advantages over traditional horizontal zone refining, as it allows for enhanced control over the molten zone and solid–liquid interface, ultimately leading to superior impurity separation efficiency. The present study reveals that the solute partition coefficients (k0) of various impurity elements, such as Zn, Ag, Al, Mg, Ca, Ni, In, Co, Cu, As, Pb, Fe, and Bi, during the vertical zone refining process consistently demonstrate values below one. Notably, the partition coefficient of Sb deviates slightly from the others, being greater than one but approaching one. The authors achieve exceptional levels of purity in both the bottom and middle regions of the rod by subjecting the Sn melt to nine passes of vertical zone refining at a heating temperature of 405 °C and a downward pulling rate of 10 µm/s, resulting in purities exceeding 6N4. Furthermore, by evaluating the effective partition coefficients (keff), it was determined that impurity elements, such as Cu and Bi, closely approach their equilibrium partition coefficients, reaching values of approximately 0.492 and 0.327, respectively. To further enhance the purity of Sn metal and maximize product yield, we propose the utilization of electrolytic refining and vacuum distillation, with particular emphasis on the efficient separation of five specific elements, including Cu, Fe, As, Pb, and Sb. By elucidating these findings, this study not only contributes valuable insights into the efficacy of vertical zone refining as a purification technique for high-purity tin metal, but also offers important recommendations for refining strategies and impurity element separation.

show abstract

Extraction, recovery and characterization of aluminum chloride from Ethiopian kaolin by leaching and crystallization

2022

View full text Add to dashboard Cite

Coordination mechanism of aluminum with oxalate and fluoride in aluminum crystallization from vanadium extraction wastewater

Cited by 10 publications

References 32 publications

Selective Separation Recovery of Copper and Arsenic from the Leaching Solution of Copper Soot

Selective Separation Recovery of Copper and Arsenic from the Leaching Solution of Copper Soot

Purification of High-Purity Tin via Vertical Zone Refining

Extraction, recovery and characterization of aluminum chloride from Ethiopian kaolin by leaching and crystallization

Contact Info

Product

Resources

About