摘要
采用活性氧化镁从含锰、镁的硫酸盐介质中选择性沉淀富集镍、钴。结果表明,最佳沉淀条件为:浆化后添加理论量2倍的活性氧化镁,反应停留时间6h,沉淀温度25℃。在该条件下,镍、钴沉淀率分别为97.96%和96.43%,沉淀物中镍、钴、锰和氧化镁含量分别为8.51%、13.05%、2.29%和4.97%,当每立方矿浆添加0.2g絮凝剂AN905时,矿浆平均静态自由沉降速度为180mm/min。
Nickel and cobalt were selectively precipitated and enriched from Mn, Mg containing sulfate me- dium with active magnesium oxide. The results show that the optimum precipitation conditions include twice of theoretical dosage of active magnesium oxide, reaction time of 6 h, and precipitation temperature of 25℃. The precipitation rate of nickel and cobalt is 97.96% and 96.43% respectively. The content of nickel, cobalt, manganese and magnesium oxide in precipitate is 8.51%, 13.05%, 2.29%, and 4. 97% respectively. The average static-state free settling velocity of slurry is 180 mm/min with the dosage of flocculant AN905 of 0.2 g/m3.
出处
《有色金属(冶炼部分)》
CAS
北大核心
2013年第9期1-3,18,共4页
Nonferrous Metals(Extractive Metallurgy)
基金
国家自然科学基金资助项目(51274044)
关键词
活性氧化镁
沉淀
红土镍矿
氧化铜钴矿
镍钴选择性分离
active magnesium oxide
precipitation
nickeliferous laterite
copper & cobalt oxide ore
nickel and cobalt selective precipitation