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采用两段沉淀法净化某废旧高温合金浸出液,第一段采用质量分数为15%的磷酸钠溶液作为沉淀剂,机械搅拌条件下,控制终点pH 2.5,温度70℃,反应时间2h,铬、铝的除杂率均在90%以上;第二段采用质量分数为15%的氢氧化钠溶液作为沉淀剂,机械搅拌条件下,控制终点pH 5.5,温度70℃,反应时间2h,铬、铝的脱除率均在99%以上,所得净化液可直接进行下一步镍钴分离处理,扩大试验结果表明,此工艺有良好的工业应用前景。
Abstract：Two-stage precipitation process was applied to purify leaching solution of superalloy scrap.In the first stage,removal rate of impurities of Cr and Al are all 90% above with mass concentration of 15%Na3PO4as precipitation agent under the conditions including pH value of end point of 2.5,temperature of70 ℃,and reaction time of 2h.In the second stage,removal rate of impurities of Cr and Al are all 99%above with mass concentration of 15% NaOH as precipitation agent under the conditions including pH value of end point of 5.5,temperature of 70 ℃,and reaction time of 2h.The purified solution can be directly used to separate Ni and Co.The expanding test results show that this process has better industrial application prospect.
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基本信息:
中图分类号:TG132.3
引用信息:
[1]郭瑞,王靖坤,王治钧,等.两段沉淀法净化某废旧高温合金浸出液的研究[J].有色金属(冶炼部分),2015(06):14-17.
基金信息:
国家高技术研究发展计划(863计划)项目(2012AA063204)
2015-06-12
2015-06-12