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Study on the new technology of direct leaching of high-iron zinc sulfide concentrate

wallpapers News 2021-11-18
Study on the new technology of direct leaching of high-iron zinc sulfide concentrate
This method systematically studies the pressure leaching technology and theory of high-iron zinc sulfide concentrate and polymetallic complex sulfide ore. The article first summarizes the achievements and existing problems of my country's non-ferrous metallurgy industry, and introduces the history of pressurized hydrometallurgy, Especially emphasizing the superiority of pressurized hydrometallurgy and its important role in non-ferrous metallurgy. The progress of pressurized hydrometallurgy at home and abroad is introduced, and the domestic and foreign targets for high-iron zinc sulfide concentrates and polymetallic complex sulfide ore are described. Using the research results and industrial application status of pressure leaching technology, the research significance and main research content of this paper are clearly put forward. The research content of the paper is mainly divided into two parts: basic theoretical research on oxygen pressure leaching of high-iron zinc sulfide concentrate and Research on the oxygen pressure leaching process of polymetallic complex sulfide ore.
The pressure leaching technology is used to treat high-iron zinc concentrate, and small-scale tests, semi-industrial tests, and industrial tests are completed and put into industrial production. The zinc leaching rate of the industrial test is 98.05%, and the iron leaching rate is 29.22%, which is a good realization of zinc Selective leaching; the residual acid in the leaching solution is 39.15g/L, and the iron content in the leaching solution is 5.71g/L, which can be treated by the process of removing iron by precipitation.
Aiming at the problem that a large amount of sphalerite resources in Yunnan Province is difficult to economically treat with the existing technological process, a new process suitable for processing high-iron zinc sulfide concentrate has been researched and developed, and the whole process of the system is small-scale and semi-industrial experiments. On the basis of this, completed industrial experimental research and industrialized production, and solved some key technologies in the engineering process. The stable industrial production results show that the pressure leaching technology is an efficient, clean, and economical treatment of high-iron zinc sulfide concentrate. technology.
 

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