CAJ | 학술논문

采用氨法沉淀将氯化铜锰锌钴废液中几种金属离子（Mn2+、Cu2+、Zn2+、Co2+）进行选择性的分离，即将Mn2+与Cu2+、Zn2+、Co2+分离，并初步探索出了最佳的实验条件.在25℃条件下，实验通过向氯化铜锰锌钴废液中添加过量的NH3·H2O，使得 Cu2+、Zn2+、Co2+与溶液中NH3结合形成络合离子继续存于溶液中，Mn2+则与NH3·H2O形成氢氧化物沉淀下来.结果表明：采用氨法沉淀分离Mn2+与Cu2+、Zn2+、Co2+的最佳工艺条件是25℃条件下，加入NH3·H2O的浓度为7 mol/L，溶液终点pH=9.6~9.7，反应时间为1 h.在上述优化的工艺条件下，Mn2+的沉淀率≥90%，而Cu2+、Zn2+和Co2+的沉淀率≤10%，实现了Mn2+与Cu2+、Zn2+、Co2+的初步分离.
채용안법침정장록화동맹자고폐액중궤충금속리자（Mn2+、Cu2+、Zn2+、Co2+）진행선택성적분리，즉장Mn2+여Cu2+、Zn2+、Co2+분리，병초보탐색출료최가적실험조건.재25℃조건하，실험통과향록화동맹자고폐액중첨가과량적NH3·H2O，사득 Cu2+、Zn2+、Co2+여용액중NH3결합형성락합리자계속존우용액중，Mn2+칙여NH3·H2O형성경양화물침정하래.결과표명：채용안법침정분리Mn2+여Cu2+、Zn2+、Co2+적최가공예조건시25℃조건하，가입NH3·H2O적농도위7 mol/L，용액종점pH=9.6~9.7，반응시간위1 h.재상술우화적공예조건하，Mn2+적침정솔≥90%，이Cu2+、Zn2+화Co2+적침정솔≤10%，실현료Mn2+여Cu2+、Zn2+、Co2+적초보분리.
Selective separation of a variety of metal ions(copper, manganese, cobalt, zinc) from the waste liquid containing chlorides of copper, manganese, zinc and cobalt, that was the separation of manganese ions from other ions, was made to explore the optimal experimental conditions initially. Under the condition of 25 ℃, copper, zinc and cobalt ions could form the complexation ions with ammonia remaining in the solution by adding the ammonia excessively , then manganese ions could form the hydroxide precipitate in the process of experiment. The experimental results show that the optimal separation conditions are as following:at the temperature of 25 ℃, the concentration of NH3·H2O added is 7 mol/L,end pH value of waste liquid is 9.6 to 9.7 and the reaction time is 1 h. At the above optimal conditions, the precipitation rate of Mn2+is more than 90%, precipitation rates of Cu2+, Zn2+and Co2+are less than 10%, the initial separation of Mn2+and Cu2+, Zn2+, Co2+is achieved.