Distribution of Copper Resources in China
China’s domestic copper ore reserves are not abundant, with basic reserves amounting to approximately 30 million tons. Most of these reserves are concentrated in Jiangxi, Tibet, and Yunnan provinces, which collectively account for about 50% of the country’s total copper ore reserves. Additionally, significant copper reserves are found in six other provinces and regions, namely Gansu, Anhui, Inner Mongolia, Shanxi, Hubei, and Heilongjiang, with their combined reserves representing 32.3% of the national total. The reserves in these nine provinces and regions collectively make up 80% of China’s total copper ore reserves.
Industrial Electrolytic Copper Smelting
Copper smelting methods can be categorized into two types: pyrometallurgy and hydrometallurgy. Over 85% of the world’s refined copper production is recovered from copper sulfide concentrates and recycled copper through pyrometallurgical processes, while hydrometallurgical methods contribute to only about 15% of refined copper output.
Pyrometallurgical Copper Smelting
This method involves processes such as roasting, smelting, converting, and refining, using copper sulfide concentrates as the primary raw material. It ultimately yields high-purity copper with a content of up to 99.99%.
Hydrometallurgical Copper Smelting
In hydrometallurgical copper smelting, sulfuric acid is used to convert copper in the ore into soluble copper sulfate. Subsequently, iron is introduced into the copper sulfate solution to displace the copper, a process known as hydrometallurgical copper extraction. The principle behind this method is the use of displacement reactions to produce metals.
Principle and Chemical Equations of Hydrometallurgical Copper Smelting:
- CuO+H2SO4=CuSO4+H2O (Double decomposition reaction)
- CuSO4+Fe=Cu+FeSO4 (Displacement reaction)
Production Process of Hydrometallurgical Copper Smelting
- Copper Leaching: This involves placing iron into a solution of chalcanthite (CuSO₄·5H₂O, commonly known as “bile water”), allowing the copper ions in the chalcanthite to be displaced by the metal and deposited as elemental copper.
- Collection: The displaced copper powder is collected and then subjected to smelting and casting processes.
Cathode Current Density
Cathode Current Density: 300 A/m²
Technical Parameters
| Model | Pure Gold Precipitation Capacity | Others | Power Supply | Material |
| JQ-JDJ-20 | 20kg/d | It depends on the actual operating conditions. | 380V | PPH |
| JQ-JDJ-50 | 50kg/d | |||
| JQ-JDJ-100 | 100kg/d |
