EXTRACTING INDIUM FROM POLYMETALLIC ORE DEPOSITS

Аннотация

Indium naturally occurs in ores alongside copper, tin, zinc, and other metals, so its extraction is often carried out together with these metals. Keywords: indium sulfide (In₂S₃), indium oxide (In₂O₃), ore mining and beneficiation, sulfidation process, hydrometallurgy, electrolysis process. 1. Ore Mining: The most common ores of indium are indium sulfide (In₂S₃) or indium oxide (In₂O₃), which are found together with copper, tin, or other metals in ore form. Therefore, indium is usually extracted during the process of extracting copper or tin. For example, in the Khondiza mines, copper and indium can be found together. 2. Ore Beneficiation: After mining, the ore is cleaned and concentrated. In this process, the main metal (for example, copper) is separated from the other metals mixed with it. During beneficiation, concentrates of copper (or other main metals) are obtained, and the amount of indium present is determined. 3. Copper Extraction: During the process of extracting copper, the ore is melted at high temperatures, and pure copper is separated. In this process, other metals (such as indium) may remain in the smelt (melted form). Indium is usually found in sulfide form together with copper. In the copper extraction process, when the ore is melted, copper itself is separated in its pure form (Cu). However, other metals in the ore, such as indium, zinc, or tin, may remain in the smelting residue. 4. Indium Separation: To separate indium from copper, several chemical processes are typically used. When copper and indium are melted together, indium can be separated through the following methods: 310 Acumen: International Journal of Multidisciplinary Research Acumen: International Journal of Multidisciplinary Research ISSN: 3060-4745 IF(Impact Factor)10.41 / 2024 Volume 1, Issue 5 Sulfidation (Flotation) Process: This process ensures the separation of metals in the ore through liquids. To separate indium, copper or other main metals are left in sulfide form, and indium can be separated using other chemical methods. Hydrometallurgy: In this method, chemical solutions (such as acidic solutions) are used to extract indium. During this process, indium in the ore separated from copper passes into the solution, and then, through chemical reactions, pure indium can be obtained. Electrolysis: Electrolysis can also be used to separate copper and indium. After pure copper is separated from the copper solution through electrolysis, the remaining portion of indium can be separated through an electrolytic