Direct electrorefining of copper scrap using a titanium anode-support system in a monopolar cell

Iron Removal from Copper-based Alloy Scraps through Oxidation Slagging Process

“…16,18,19) In Chile, anode support system has been used in industrial electro-refining of copper scraps and blister copper granules, which claims an energy saving as high as 50%. [20][21][22][23][24] A simultaneous electroleaching-deposition process was also used to recover copper from printed circuit boards powder concentrates and achieved good experimental results. 25) However, when the Fe 2 + concentration is 1-2 g/L, 6-9 g/L and 10 g/L in the electrolyte, the current efficiency is only 94%, 79% and 71% respectively, and further the high Fe 2 + concentration increases the acid consumption obviously.…”

“…The treatment of copper alloy scraps could be classified into two methods: pyrometallurgical and hydrometallurgical processes. [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24] As for the purple copper scraps, the vertical furnace and reflector furnace are generally used to produce anode copper directly. For the copper scraps alloyed with other metals, a two-stage treatment process, containing smelting in blast furnace or blowing by the converter and then refining into the anode copper by reflector furnace, is generally used to recover copper from them.…”

“…2,[8][9][10][11][12][13][14] In addition to the commonly used pyrometallurgical process, several hydrometallurgical methods have also been developed. [5][6][7][15][16][17][18][19][20][21][22][23][24][25] Hydrometallurgical treatment of these materials, containing leaching, extraction and electrowining, is proposed as an alternative low-cost and environmental friendly technology. 15,16) However, it has…”