How does Jinchuan Group Metres Ruvasi Company produce Class A copper

Jinchuan Group The electrowinning copper production line of Metris Ruvasi Mining Co., Ltd. was completed and put into operation in 2009. The design index is Class A copper (LME London Metal Exchange), but the actual quality of electrowinning copper is not satisfactory. After Jinchuan led the operation in 2015, it carried out continuous quality research activities for the quality of electrowinning copper products for nearly three years. The grade A copper grade rate has achieved a breakthrough from "zero" to gradually increase to more than 90%.

For example, in the production of Waxi electrowinning copper, excessive lead impurity is a key issue affecting quality. Due to the long-term disrepair of the cathode plate, the conductivity and flatness cannot meet the requirements of high-quality production. If all the cathode plates are replaced, it is a task that cannot be completed in a short period of time from the perspective of finance and production organization. The more "impossible" it is, the more it can arouse the high morale of the "Jinchuan people".

Aimed at the problem of the sag of the anode plate, such as the use of insulators and waste clip edge strips in conjunction with the use of insulators and waste clip edge strips to insulate the surface and edges of the plate. At the same time, a leveling device for the anode plate is made to ensure all the tanks are inserted. The verticality of the anode plate. The semi-automatic paddle unit was upgraded and transformed to avoid the bending damage of the electrode plate caused by manual hammering and peeling, and the repair work of the cathode plate was carried out simultaneously, saving outsourcing repair cost of 300,000 US dollars. The addition of an automatic washing unit has completely eliminated the surface pollution of electrowinning copper, and a series of technological innovation projects have promoted a qualitative leap in the quality of electrowinning copper products.

To completely solve the problem of electrowinning copper quality, it requires the cooperation of upstream and downstream processes. In response to the problem of high organic entrainment leading to board surface pollution, for example, Wassey used simulation software to carry out dynamic analysis in the extraction production process according to production parameters, and reversed the optimal economic balance point of organic inventory and concentration. From the organic return, upgrade and apply a series of equipment such as three-phase centrifugal separator, multi-media filter, automatic oil skimmer, etc.Not only has it greatly improved the problem of organic entrainment pollution, it has also enabled the organic consumption of copper per ton to reach the leading level of the same industry in Congo (DRC), saving more than 1 million US dollars in the cost of reagent consumption each year.

multi-media filter is the most critical equipment to control organic pollution. The original design filter cap is damaged frequently, and it is still ineffective after several changes. Not only does the medium consumption increase, the electrolyte organic entrainment is also high . Foreign manufacturers not only cost a lot of retrofitting, but also demanded that their filter materials must be used simultaneously. For example, Wassi tried to find a filter manufacturer with similar technology in China, and jointly developed and applied stainless steel wire-wound tube filters. After the transformation, not only the filtering effect is significantly improved, but also the filtering capacity is greatly improved. The liquid surface of the electrowinning tank has changed from jet black to clean and translucent, which is nearly 10 times lower than the transformation cost of foreign manufacturers, and the filter medium replacement cycle has been increased from less than half a year to nearly Over a period of two years, the cost of filter media alone can save nearly US$100,000 per year.

From the use and correction of the plates, to the optimization of technical parameters, to the update and curing of operating procedures, copper cathode impurity lead content is gradually controlled by more than 3 times the standard of LME Below 5ppm. The improvement of 's quality index eliminated customer complaints, and the annual loss caused by quality deductions was reduced by more than US$1 million. For example, Wassi's success in both epidemic prevention and control and safety production.