摘要
采用Na2CO3-NaOH-NaNO3熔盐体系回收废弃电路板中的有价金属,考察Na2CO3-NaOH质量比、熔炼温度、熔炼时间、碱料比等因素对有价金属转化率的影响。结果表明,较为适宜的熔盐体系组成和工艺条件为:Na2CO3-NaOH质量比5.3∶16、熔炼温度700℃、熔炼时间40min、碱料比5∶1,在此条件下,锡、锌、铝、铅的转化率分别为84.55%、100%、93.71%、73.72%,铜以CuO形态富集在渣中。
Valuable metals were recovered from multi-component metal powder （MMP） of waste printed circuit boards in alkaline oxide melt system of Na2CO3-NaOH-NaNO3.The effects of mass ratio of Na2CO3-NaOH,smelting temperature and time,mass ratio of alkaline medium-MMP on valuable metal extraction were investigated.The results show that composition of molten salt and optimum conditions include mass ratio of Na2CO3-NaOH of 5.3 ∶ 16,smelting temperature of 700 ℃,smelting time of 40 min,and mass ratio of alkaline medium-MMP of 5 ∶ 1.The transforming rate of tin,zinc,aluminum,and lead are 84.55％,100％,93.71％,and 73.72％,respectively.Copper is enriched in slag in form of CuO.
出处
《有色金属（冶炼部分）》
CAS
北大核心
2014年第9期1-4,共4页
Nonferrous Metals（Extractive Metallurgy)
基金
国家自然科学基金面上项目(51074190)
国家自然科学基金重点项目(51234009)
教育部博士点基金项目(20110162110049)
