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| Study of the Factors Influencing the Decoppering Process of Non-Ferrous Metallurgy Slags: A Review |
Shokhrukh Khojiev, Bakhriddin Berdiyarov, Dilfuza Yavkochiva, Jahongir Abduraimov
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Abstract:
The metallurgy of copper and other heavy non-ferrous metals is the leading link in the domestic non-ferrous metallurgy. The share of heavy non-ferrous metals in Uzbekistan accounts for a significant part of the gross output of the industry. The value of copper is increasing from year to year, especially in connection with the rapid development of energy, electronics, mechanical engineering, aviation, space and nuclear technology. Further development and the technical level of copper production largely determine the technical progress of many sectors of the national economy of our country, including microprocessor technology. To obtain copper, all kinds of smelting methods are used, for example, smelting copper concentrates in electric, reflective, shaft furnaces, using the process of converting copper mattes, thanks to autogenous suspended smelting, on matte, etc. Today there are several main processes of autogenous smelting: process "Noranda", "Warkra", "Mitsubishi", "Oxygen-flare" and Vanyukov. Unfortunately, the development of new designs of furnaces and various processes requires significant investments, and our enterprises do not have enough free funds. This paper will consider the technology for reducing the loss of copper with slags during smelting processes. Numerous parameters affect the copper content in slags, of which the following should be considered the most important: preparation of the charge, parameters of the technological mode of smelting, physicochemical properties of melts, design of units, organization of work, etc. It is very difficult to give an unambiguous assessment of the influence of all parameters acting separately or in aggregate, and is hardly possible at all. In this regard, we will try to assess individual process parameters from the point of view of their influence on the depletion indicators and the possibility of changing their values ??in real metallurgical smelting.
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