| Abstract Scope |
This study focuses on the resource utilization of Jinchuan copper tailings through coal-based hydrogen metallurgy rotary kiln experiments. Through tests on the yield of pyrolysis products, multi-element analysis, and exploratory experiments under different ratios and process conditions, the reduction characteristics of copper tailings under hydrogen metallurgy conditions were investigated. Experimental results indicate that the use of carbon-containing pellets combined with hydrogen metallurgy technology can significantly enhance the metallization rate of iron in copper tailings, reaching up to 92.87%. Moreover, by optimizing process parameters such as kiln temperature, kiln speed, and carbon addition, the metallization effect was further improved. Additionally, the study explored the neutral melting and separation of magnetite from metallized materials, finding that impurity elements enter steel with iron during melting, but direct melting results in excessive slag, suggesting a grinding and magnetic separation followed by melting process. |