Anode-support system for the direct electrorefining of cement copper Part I: Process conditions using horizontal rotary cathodes

Leaching of Malachite Ore in Ammonium Sulfate Solutions and Production of Copper Oxide

“…However, metallic copper obtained by the cementation method is not of high-purity because cement copper tends to form the oxide during the drying procedure (Habashi, 1997;Karavasteva, 2005;Demirkıran et al, 2007). The cement copper can be marketed as a commercial powder product, or it can be purified by applying pyrometallurgical refining or electro-refining processes (Gana et al, 1995;Figueroa et al, 1997). Besides, high-purity metallic copper can be produced by electrolysis after the cement copper is dissolved in sulfuric acid solution.…”

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…”

Copper Cementation with Zinc Recovered from Spent Zinc–Carbon Batteries and Dissolution of Cement Copper in Hydrochloric Acid Solutions

“…Even though it is not very high-purity, the copper produced by cementation can be evaluated as a powder, or other copper compounds can be produced from it. The cement copper can be marketed as a commercial powder product, or it can be purified by applying pyrometallurgical refining or electrorefining processes. , Moreover, high-purity metallic copper can be produced by electrolysis after cement copper is dissolved in aqueous acid solution. Furthermore, different copper compounds can be also prepared by means of various methods, such as precipitation, crystallization, and evaporation.…”