: In this article, the process laws and technological aspects of the process of sintering the zinc-containing waste of a zinc plant with technical sulfur are considered. Zinc cake is obtained during the sulfuric acid leaching of calcined zinc ores and contains about 20% zinc and additional metals such as indium, cadmium, lead and copper. Copper cakes are somewhat difficult to work with because they contain ferrites and silicates belonging to acid-resistant spinels. Since the chemical and mineralogical composition of zinc production cakes consists of complex oxides, finding ways to process them is one of the actual topics of zinc metallurgy. For example, the majority of zinc and iron in zinc cake is in the form of zinc ferrite (ZnO·Fe2O3), a compound insoluble in mineral acids and is not attracted to magnets. Therefore, finding a way to process zinc cakes so that zinc ferrite separates into zinc and iron compounds is one of the important tasks for metallurgical scientists. When the composition of zinc factory cakes was chemically analyzed, the amount of iron in it was 19.4%. In this study, based on the chemical composition of zinc and iron, quantitative analysis revealed that zinc and iron in raw materials are in the form of zinc ferrite compound. Based on this material composition, a method of converting iron into a magnetic form by recovering trivalent iron oxide from zinc ferrite in the presence of technical sulfur was proposed, and the conditions of the process flow were studied. The mechanism of chemical phenomena occurring in the interaction regions of zinc ferrite and technical sulfur has been developed
: In this article, the process laws and technological aspects of the process of sintering the zinc-containing waste of a zinc plant with technical sulfur are considered. Zinc cake is obtained during the sulfuric acid leaching of calcined zinc ores and contains about 20% zinc and additional metals such as indium, cadmium, lead and copper. Copper cakes are somewhat difficult to work with because they contain ferrites and silicates belonging to acid-resistant spinels. Since the chemical and mineralogical composition of zinc production cakes consists of complex oxides, finding ways to process them is one of the actual topics of zinc metallurgy. For example, the majority of zinc and iron in zinc cake is in the form of zinc ferrite (ZnO·Fe2O3), a compound insoluble in mineral acids and is not attracted to magnets. Therefore, finding a way to process zinc cakes so that zinc ferrite separates into zinc and iron compounds is one of the important tasks for metallurgical scientists. When the composition of zinc factory cakes was chemically analyzed, the amount of iron in it was 19.4%. In this study, based on the chemical composition of zinc and iron, quantitative analysis revealed that zinc and iron in raw materials are in the form of zinc ferrite compound. Based on this material composition, a method of converting iron into a magnetic form by recovering trivalent iron oxide from zinc ferrite in the presence of technical sulfur was proposed, and the conditions of the process flow were studied. The mechanism of chemical phenomena occurring in the interaction regions of zinc ferrite and technical sulfur has been developed
| № | Муаллифнинг исми | Лавозими | Ташкилот номи |
|---|---|---|---|
| 1 | Matkarimov S.T. | researcher | Uzbek-Japam Innovation center of youth |
| 2 | Berdiyarov B.T. | teacher | TSTU |
| 3 | Khojiev S.T. | teacher | TSTU |
| 4 | Ismailov J.B. | teacher | TSTU |
| 5 | Ismatov S.O. | teacher | TSTU |
| № | Ҳавола номи |
|---|---|
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| 2 | Sh.T. Khojiev., B.T. Berdiyarov. Measures to prevent the formation of silicates and ferrites in the process of burning sulphide zinc enrichment in a Hot Bed Furnace. Collection of lectures of the republican scientific conference, Part I TashSTU, Tashkent: “The role of intellectual youth in the development of science and technology”, 2015. 171. |
| 3 | Sh.T. Khojiev., Z.N. Ruziev., K.T. Ochildiev. The development of non-waste technology in mining and metallurgical productions. Collection of articles of the II International scientific and practical conference in Penza: “Advanced Science”, 2018. 68. |
| 4 | Sh.T. Khojiev., A.A. Erkinov., Kh.T. Abjalova., S.U. Mirsaotov., S.S. Mamaraimov. The use of metallurgical man-made waste as a raw material. scientific journal, No. 43(93). Part 5. Moscow: “Student Bulletin”, 2019. 69 |
| 5 | Sh.T. Khojiev., Y.F. Norqobilov., Sh.A. Rakhmataliyev., M.N. Suyunova. Young metallurgist: questions and answers, interesting information and technological processes of metal production. - Tashkent: "Tafakkur" publishing house“, 2019. 140 |
| 6 | A.A. Yusupkhodjaev., S.B. Mirzajonova., Sh.T. Khojiev. Theory of pyrometallurgical processes: textbook. - Tashkent: "Tafakkur" publishing house“, 2020. 300. |
| 7 | A.A. Yusupkhodjaev., B.T. Berdiyarov., Sh.T. Khojiev., Z.B. Ismailov. Technology for increasing the complexity of the use of strategically important raw materials in the nonferrous metallurgy of Uzbekistan. Scientific and practical journal - Tashkent “Security of technical and social systems”, 2019. 12. |
| 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. Khojiev., S.B. Mirzajonova. Analysis of the state of the system in metallurgy. Monograph. Beau Bassin (Mauritius): “LAP LAMBERT Academic Publishing”, 2020. 189 |
| 10 | Sh.T. Khojiev. Modern scientific researches in metallurgy: from theory to practice: monograph. - Beau Bassin (Mauritius): “LAP LAMBERT Academic Publishing”, 2020. 154. |
| 11 | Sh.T. Khojiev. Improving Environmental Protection as a Result of Non-ferrous Metallurgy Industry Waste Recycling. Proceedings of an international scientific and technical online conference –Tashkent: “Challenges and Prospects Innovative Technics and Technologies in the Security Sphere Environment”, 2020. 278. |
| 12 | Sh.T. Khojiev. Economic efficiency of using local and alternative energy resources to reduce natural gas consumption at metallurgical enterprises. Materials of the republican scientific and technical conference, - Tashkent: "Innovative developments in the field of science, education and production - the basis of the investment attractiveness of the oil and gas industry", 2020. 413. |
| 13 | 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, -Brno, Czech Republic: “Metal 2020 29th international conference on metallurgy and materials”, 2020. 971. |
| 14 | B.T. Berdiyarov., Sh.T. Khojiev., S.U. Mirsaotov. Relevance of non-ferrous metallurgical waste processing. Collection of online scientific the practical conference with the participation of foreign scientists - Bukhara: "Current problems of modern chemistry", 2020. 61 |
| 15 | B.T. Berdiyarov., S.T. Matkarimov., J.B. Ismailov. Recovery of the recovery zinc concentrate in a weakly reducing gas atmospheric environment. Vol. 2. “Technical science and innovation”, 2022. 4. |
| 16 | Sh.T. Khojiev., B.T. Berdiyarov., S.T. Mirsaotov. Reduction of copper and iron oxide mixture with local reducing gases. Tashkent: “Acta” 2020. 7. |
| 17 | B.T. Berdiyarov., A.S. Xasanov., J.B. Ismailov. Investigation of Investigation actions occurring during the firing of charge components. Vol. 3. “Technical science and innovation”, 2021. 130. |
| 18 | Sh.T. Khojiev., Sh.A. Rakhmataliev., M.I. Tulaganov., M.M. Rakhmonaliyev. Modern technologies of zinc production. “My professional career”, 2022. 266 |
| 19 | Sh.T. Khojiev., M.S. Saidova., S.B. Mirzajonova., H.X. Ibrokhimov., Sh.O. Ismatov. Development of Technology for Processing Zinc Cakes Based on the Use of Petroleum Coke. “International journal of academic engineering research”, 2022. 23 |
| 20 | Sh.T. Khojiev., M.S. Saidova., M.J. Urinboyev. Modern Methods of Coating Zinc and Chromate Shells on the Surface of Structural Materials. “International journal of engineering and information system”, 2022. 1 |
| 21 | A.S. Khasanov., Q.T. Ochildiyev., B.T. Berdiyarov., Sh.T. Khojiev., S.T. Matkarimov. Study thermodynamics of the magnetite sulfidation in copper smelting processes. “Technical science and innovation”, 2022. 19. |