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投稿时间：2021-09-11
投稿时间：2021-09-11
中文摘要: 石膏渣作为铜冶炼系统重要的副产物,属危险废物,处置成本高,堆存压力大.石膏渣高温煅烧分解得到的氧化钙在工业上有远大的应用前景,可作为溶剂返加侧吹熔炼炉,一方面改善渣型,另一方面可节约氧化钙购买成本.采用还原气氛下的高温煅烧法,探讨了分解温度、无烟煤加入量及分解时间对石膏渣热分解效果的影响.实验结果表明,石膏渣在还原气氛下,温度1300℃,恒温60min,基本完全分解.
Abstract:The gold sample with a purity of 99.99% is used as the matrix, and 12 impurity elements are added as required.Accurately weigh 11 kinds of high-purity standard materials (Ag, Pb, Cu, Fe, Sb, Bi, Pd, Sn, Ni, Cr, Mn) and magnesium alloys of corresponding quality, and adjust the frequency of the high-frequency furnace to change the temperature. According to the characteristics of high melting point, low melting point, easy oxidation and easy volatility, 3 master marks are casted separately. Then, by diluting the mother standard, a monitoring sample that meets the impurity element content required by the instrument and method is finally made.
keywords: gypsum slag hazardous waste reducing atmosphere high temperature calcination thermal decomposition calcium oxide
文章编号：20210518 中图分类号：TQ132.32;X758
基金项目:
引用文本：
林巧,陶超凡,王冬冬.石膏渣热分解过程分析[J].铜业工程,2021,(5):63-65
