Purification of selenium-containing solutions from impurities during neutralization
Abstract
When selenium is extracted from copper electrolyte slurries, soda-alkaline selenium-containing solutions are usually obtained. In addition to the main component, selenium, they contain impurities: tellurium, various heavy metals, silver, iron, arsenic, mercury, etc. The main impurity is tellurium, which is isolated from the solution as hydrated dioxide by neutralization to pH = 5--6. At the same time, it is very important to remove other impurities, the ingress of which into selenium reduces its quality.
Область исследования:
(Archived) Without section
Funding:
None
References
- Anisimov S. M. et al. Separation of selenium and tellurium from platinum group metals in the form of selenite and tellurite of trivalent iron. News of higher education institutions. Non-ferrous metallurgy, 1961, No. 1.
- Plotnikov V. I. Coprecipitation of selenium and tellurium with metal hydroxides. Zh. NKh, 1960, No. 5 (3).
- Plotnikov V. I. Methods of analysis of ores and products. Tr. VNIITsvetmet, 1959, No. 5.
- Plotnikov V. I. Coprecipitation of small quantities of selenium and zinc with metal hydroxides. Zh. NKh, 1964, No. 9.
- Fundamentals of metallurgy. Vol. 1, Part 1. Metallurgy Publishing House, 1961.
- Chemist's Handbook, edited by B. P. Nikol'skii. Chemistry, Vol. 3, 1964.
- Greiver, T. N. Selecting a Method for Calculating the Solubility of Chalcogenides. News of Universities, Non-Ferrous Metallurgy, 1967, No. 5.
- Yatsimirskii, K. B., Vasiliev, V. P. Instability Constants of Complex Compounds. USSR Academy of Sciences, 1959.