CAJ | 학술논문

为了开发宏量钨钼分离的低成本方法,研究不同工艺条件对硫酸亚铁沉淀分离钨钼的影响.结果表明:钨钼分离的最佳反应温度为10℃,在此温度下反应时间大于7h后钨钼的分离系数不再增加；沉淀剂溶液的慢速加入可提高分离效果；当溶液中n(H+)/n(W)低于1/1时,往中性溶液中添加酸对分离过程有利；当溶液中铵浓度不高于3 mol/L时,钨的沉淀率高,分离系数也较大.本方法可有效处理含一定杂质的工业溶液.这些结果表明铁盐在工业上用于钨钼分离的潜力大.
위료개발굉량오목분리적저성본방법,연구불동공예조건대류산아철침정분리오목적영향.결과표명:오목분리적최가반응온도위10℃,재차온도하반응시간대우7h후오목적분리계수불재증가；침정제용액적만속가입가제고분리효과；당용액중n(H+)/n(W)저우1/1시,왕중성용액중첨가산대분리과정유리；당용액중안농도불고우3 mol/L시,오적침정솔고,분리계수야교대.본방법가유효처리함일정잡질적공업용액.저사결과표명철염재공업상용우오목분리적잠력대.
In order to develop a low-cost approach for separating macro amounts of Mo and W,the effects of parameters on the separation using FeSO4 as precipitation reagent were studied.The results show that the optimum reaction temperature is 10 ℃,and the separation factor does not further improve after a reaction time of 7 h.Moreover,slow dropping speed of the precipitation reagent is beneficial for improving the separation efficiency.When the H+/W molar ratio is below 1/1,the addition of acid to a neutral solution is favorable to the separation.For the solution with an ammonium concentration below 3 mol/L,the separation factor is high due to the high W-precipitation rate.Furthermore,the method is also effective when it is applied to industrial solution containing some other impurities.All these indicate the ferrous salts have great potential for removing W from Mo on a commercial scale.