(中南大學(xué) 冶金科學(xué)與工程學(xué)院，長沙 410083)
摘 要: 針對某水鈷礦的特點(diǎn)，采取還原酸浸−旋流電積新工藝選擇性提取其中的銅和鈷。系統(tǒng)考察初始硫酸濃度、溫度、時(shí)間、Na2SO3用量、液固比等因素的影響，確定浸出最佳條件如下：初始硫酸濃度為75g/L，Na2SO3用量為7%，液固比L/S=4 mg/L，溫度為70 ℃，時(shí)間為0.5 h。對浸出液進(jìn)行了旋流電積提取銅和鈷的探索實(shí)驗(yàn)研究，得到純度分別為99.95%、99.97%的電積銅、鈷產(chǎn)品，銅、鈷的直收率分別達(dá)到98.23%和94.54%。
關(guān)鍵字: 水鈷礦；還原酸浸；旋流電積；鈷；銅
（School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China）
Abstract:Based on the characteristics of the tested heterogenite, a novel process for extracting copper and cobalt using reductive acid leaching-cyclone electrowining was carried out. The effects of initial concentration sulfate, temperature, time, Na2SO3 dosage, the liquid-solid ratio were systematically investigated. The optimum leaching conditions were determined as the initial concentration sulfate 75 g/L, Na2SO3 dosage 7%, the liquid-solid ratio of 4:1, temperature 70 ℃ and leaching time 0.5 h. The exploratory experiment of extracting copper and cobalt from the leaching solution was conducted, and the electrolytic copper and cobalt products with high purity of 99.95% and 99.97% are obtained, respectively. The direct recovery rate of copper and cobalt are 98.23% and 94.54%, respectively.
Key words: heterogenite; reductive acid leaching; cyclone electrowining; cobalt; copper
