Copper Electrorefining Cell Suitable for Treatment of Low-Grade Copper Anodes (Black Copper)
In copper smelting, the use of recycled raw materials such as e-scrap are increasing. However, since low-grade copper anodes (black copper) made from recycled raw materials are easily passivated. Therefor treatment by electrorefining has not been established. Treatment by electrowinning is now available, but it requires much more power than electrorefining. In order to solve the above problem, basket electrolysis using shot-anodes with large specific surface area has been studied to suppress the passivation of the anode surface. But the current density of the cathode must be increased, and Cu ions must be supplied to the cathode for smooth electrodeposition. The present invention is a spiral convection cell suitable for copper electrorefining which can strongly stir an electrolyte.
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The revenue generated from technology transfer is reinvested into universities and researchers as new research funding, which is used to create further research outcomes. To ensure the smooth operation of this cycle, known as the "Intellectual Creation Cycle," we will actively promote technology transfer. The types of seeds we handle include patents, know-how, databases, and programs. We have established a collaborative framework by concluding basic technology transfer agreements with the following universities (as of June 1, 2025): - Tohoku University - Hirosaki University - Iwate University - Akita University - Fukushima University - Yamagata University - Tohoku Gakuin University - Iwate Medical University - Fukushima Medical University - Aizu University - Miyagi University - Hokkaido University - Muroran Institute of Technology - Showa Medical University
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