The article discusses the problem of reducing the amount of magnetite in the
impregnation of copper in the slag generated after the conversion process in copper
production in the furnace to reduce slag. Accordingly, a method of lowering magnetite by
sulfidation has been proposed, using elemental sulfur as a local and relatively inexpensive
sulfiding-reducing agent. The mechanism of chemical phenomena occurring in the interaction
regions of magnetite and elemental sulfur has been developed. Based on the mechanism of
chemical reactions produced, each chemical reaction that occurs in the process is analysed
from a thermodynamic point of view. According to the results of thermodynamic analysis, the
limiting stage between the chemical reactions that take place in the system of magnetite and
elemental sulfur is the sulfidation reaction of magnetite before the formation of wustite. Due
to this, the temperature required for complete sulfidation of magnetite was 1275 oC. At this
temperature, the equilibrium constants of all chemical reactions have high values, as
evidenced by the study of the kinetics of the process
The article discusses the problem of reducing the amount of magnetite in the
impregnation of copper in the slag generated after the conversion process in copper
production in the furnace to reduce slag. Accordingly, a method of lowering magnetite by
sulfidation has been proposed, using elemental sulfur as a local and relatively inexpensive
sulfiding-reducing agent. The mechanism of chemical phenomena occurring in the interaction
regions of magnetite and elemental sulfur has been developed. Based on the mechanism of
chemical reactions produced, each chemical reaction that occurs in the process is analysed
from a thermodynamic point of view. According to the results of thermodynamic analysis, the
limiting stage between the chemical reactions that take place in the system of magnetite and
elemental sulfur is the sulfidation reaction of magnetite before the formation of wustite. Due
to this, the temperature required for complete sulfidation of magnetite was 1275 oC. At this
temperature, the equilibrium constants of all chemical reactions have high values, as
evidenced by the study of the kinetics of the process
| № | Author name | position | Name of organisation |
|---|---|---|---|
| 1 | Matkarimov S.T. | teacher | TSTU |
| 2 | Berdiyarov B.T. | teacher | TSTU |
| 3 | Khojiev S.T. | teacher | Almalyk mining and metallurgical combine |
| 4 | Khasanov A.S. | teacher | Almalyk mining and metallurgical combine |
| 5 | Ochildiyev Q.T. | teacher | TSTU |
| № | Name of reference |
|---|---|
| 1 | E. Tristasta. “Research on the recovery of copper from metallurgical slag mining revue”, 2021. 40 |
| 2 | K.S. Sanakulov., B.F. Mukhiddinov., A.S. Khasanov. “Chemical elements: properties, obtaining, application”, 2016. 150 |
| 3 | X. Wan., L. Shen., A. Jokilaakso., H. Eriç., P. Taskinen. Experimental approach to matte– slag reactions in the flash smelting process. “Mineral processing and extractive metallurgy review”, 2021. 231 |
| 4 | N. Cardona., P. Coursol., J. Vargas., R. Parra. The physical chemistry of copper smelting slags and copper losses at the paipote smelter: part 2 – characterization of industrial slags. “Canadian metallurgical quarterly”, 2011. 330 |
| 5 | Sh.T. Khojiev., S.T. Matkarimov., E.T. Narkulova., Z.T. Matkarimov., N.S. Yuldasheva. The technology for the reduction of metal oxides using waste polyethylene materials. “Conference proceedings of metal 2020 29th international conference on metallurgy and materials”, 2020. 971 |
| 6 | Sh.T. Khojiev. Pyrometallurgical processing of copper slags into the metallurgical ladle. International journal of advanced research in science. “Engineering and technology”, 2019. 8094 |
| 7 | Sh.T. Khojiev., A.A. Yusupkhodjaev., M. Rakhmonaliev., O.U. Imomnazarov. Research for reduction of magnetite after converting. “Composition material”, 2019. 54 |
| 8 | S.T. Matkarimov., A.A. Yusupkhodjaev., Sh.T. Khojiev., B.T. Berdiyarov., Z.T. Matkarimov. Technology for the complex recycling slags of copper production. “Journal of critical reviews”, 2020. 214 |
| 9 | A.A. Yusupkhodjaev., Sh.T. Khozhiev., U.A. Akramov. The use of non-traditional reducing agents to expand the resource base of JSC. “Ferrous metals”, 2021. 4. |
| 10 | Sh.T Khojiev., B.T. Berdiyarov., S. Mirsaotov. “Reduction of copper and iron oxide mixture with local reducing gases of Turin polytechnic university in Tashkent”, 2020. 7 |
| 11 | Sh.T. Khojiev., O.U. Nuraliev., B.T. Berdiyarov., S.T. Matkarimov., U.A. Akramov. “Some thermodynamic aspects of the reduction of magnetite in the presence of carbon”, 2021. 60 |
| 12 | Y.D. Tretyakov. “Solid state reactions”, 1978. 360 |
| 13 | B.T. Berdiyarov., Sh.T. Khojiev., S.T. Matkarimov., Sh. Munosibov. Study of the thermodynamic properties absorption sulfur storage gas of zinc and copper industry. “Technical science and innovation”, 2021. 293 |
| 14 | B.T. Berdiyarov., Sh.T. Khojiev. Thermodynamic analysis of the reduction of oxidised copper compounds in a slag phase. “Composition material”, 2021. 39 |
| 15 | Sh.T. Khojiev., B.T. Berdiyarov., Sh.A. Mukhametdzhanova., A.I. Nematillaev. “Some thermodynamic aspects of carbothermic reactions in the Fe-Cu-O-C system”, 2021. 3 |