Process for directly producing electrolytic copper through copper reverse extraction liquor

Abstract

The invention provides a process for directly producing electrolytic copper through copper reverse extraction liquor. According to the process, copper oxide in copper ore is leached with acid throughthe wet method smelting process, and metal copper is prepared; and according to the wet method smelting process, sulfuric acid serves as a solvent and is added into ore pulp ground by the ore containing the copper oxide, the copper oxide and other oxide in the ore pulp are dissolved into a CuSO4 solution, after the CuSO4 solution is subjected to copper extraction and copper reverse extraction, thecopper reverse extraction liquor is directly subjected to copper electrodeposition, and the electrolytic copper is obtained. The reverse extraction liquor obtained after copper reverse extraction isdirectly electro-deposited, all electrolytic waste liquor is used for the reverse extraction procedure, the copper extraction flow is simplified, the process is optimized, and the acid consumption andthe cost can be effectively reduced.

Description

technical field [0001] The invention relates to the technical field of producing electrolytic copper by a lead-copper ore hydrometallurgy process. Background technique [0002] The existing wet copper smelting technology generally adopts a leaching process to leach the copper oxide in the ore with acid. Specifically, sulfuric acid is added to the ore pulp ground with ore containing copper oxide. Under the conditions of acidity, high temperature and stirring, the ore pulp completely dissolves copper oxide and other oxides in the ore pulp into CuSO 4 solution, CuSO 4 Electrolytic copper is obtained from the solution through copper extraction, copper stripping and copper electrowinning. The stripped solution after copper stripping is usually returned to the leaching process for secondary acid leaching. For example, in Chinese patent 200610010938.7, the stripping solution after copper stripping in the process is returned to the leaching process of the wet copper smelting proc...

AI Technical Summary

Problems solved by technology

For example, in Chinese patent 200610010938.7, the stripping solution after copper stripping in the process is returned to the leaching process of the wet copper smelting process. With this process, the stripping agent contains H 2 SO 4 Usually as high as 150-200 grams per liter, not only the acid consumption is high, but also further purification treatment is necessary in actual production, increasing the purification process, prolonging the production process, increasing the production consumption of coal and purification agents, and pushing up the production cost