研究目的
Investigating the leaching kinetics of tellurium-bearing materials in alkaline sulfide solutions to extract tellurium and antimony efficiently.
研究成果
The alkaline sulfide leaching approach is effective for extracting tellurium and antimony from tellurium-bearing materials, with tellurium dissolution controlled by a mixed regime of diffusion and chemical reaction, and antimony dissolution controlled by chemical reaction.
研究不足
The study focuses on the leaching kinetics under specific conditions and does not explore the economic feasibility or scalability of the process.
1：Experimental Design and Method Selection:
The study developed a novel alkaline sulphide leaching process for tellurium-bearing materials.
2：Sample Selection and Data Sources:
The Te-bearing material used is a typical sodium antimonate slag from alkaline refining of lead bullion.
3：List of Experimental Equipment and Materials:
Analytical grade Na2S·9H2O, NaOH, and deionized water were used.
4：Experimental Procedures and Operational Workflow:
Leaching experiments were carried out in a 500 mL four-necked round bottomed glass reactor.
5：Data Analysis Methods:
The kinetic data for the dissolution of tellurium and antimony followed the Avrami equation.
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