摘要
对某氧化铜钴矿酸浸萃余液除杂后液进行两段沉淀回收钴,一段沉淀采用活性氧化镁,二段沉淀采用石灰,并对二段沉钴后液用石灰进行沉镁。试验结果表明,一段沉钴常温搅拌7 h,氧化镁用量2 kg/m^3,一段沉钴后液钴浓度为0.18 g/L,钴沉淀率为91.22%,钴渣含钴28.80%;两段沉钴合计钴沉淀率为98.86%,二段钴渣含钴3.75%,可返回浸出。
Cobalt was recovered by two-stage precipitation from purified raffinate of the acid leaching a certain copper-cobalt ore.Active magnesium oxide was used in the first stage and lime was used in the second stage.The test results showed that the first stage of cobalt precipitation was stirred at room temperature for 7 h,the amount of magnesium oxide was 2 kg/m^3,the cobalt concentration in the first stage of cobalt precipitation solution was 0.18 g/L,the cobalt precipitation rate was 91.22%,and the cobalt residue contained 28.80% cobalt.The total cobalt precipitation rate of the two stages was 98.86%,and the cobalt residue of the second stage contained 3.75% cobalt,which could be returned to leaching.
作者
张兴勋
Zhang Xingxun(Zijin Mining Group Co.,Ltd.,Xiamen,Fujian,China)
出处
《矿产综合利用》
CAS
北大核心
2020年第2期151-155,共5页
Multipurpose Utilization of Mineral Resources
关键词
活性氧化镁
氧化铜钴矿
沉淀
Active magnesium oxide
Copper-cobalt oxide ore
Precipitation
