Abstract

• In copper processing, many kinds of application methods are using in the world depend on the ore genesis, local environmental regulations and other factors. Among of these methods, in Monywa copper mine area, the electrowinning process is used for the concentrate of copper ore production. Processing of the copper ore involves three stages; Bio-Heap Leaching to dissolve the valuable copper from the ore, solvent extraction to purify and concentrate the copper solution generated by leaching and electrowinning to plate the copper metal into cathode sheet form. Mine reclamation is the process of restoring land that has been mined to a natural or economically usable state. Although the process of mine reclamation occurs once mining is completed, the planning of mine reclamation activities occurs prior to a mine being permitted or started. Electrowinning (EW) process is an environmental friendly way to economically produced high-grade copper from lowgrade ore deposit. Kyisintaung and Sabetaung Mines adhere to a strict zero discharge operation and all solution flows are re-circulated to ensure that no effluence is discharged from the mine to outside of lease area. Letpadaung mine produces cathode copper that complies with Landon Market Exchange (LME) Grade-A rating and is more than 99.99% in purity. Therefore, using of Electrowinning (EW) method is slightly better than the other methods.