锌焙砂热酸浸出过程的理论分析
来源期刊:中南大学学报(自然科学版)1981年第4期
论文作者:梅光贵 钟竹前
文章页码:16 - 23
关键词:锌焙砂; 热酸浸出; 黄钾铁矾法; 湿法炼锌; 浸出过程; 针铁矿法; 锌浸出率; 加酸; 热力学计算; 高酸浸出
摘 要:本文绘制了25℃和100℃ Fe3O4—H2O系和ZnO·Fe2O3—H2O系的电位—pH图,借以从热力学上解释锌焙砂热酸浸出的试验结果,即高温(1100℃)培砂较中温(850℃)培砂易于酸分解;分析了影响铁酸钙溶解的动力学因素,并论述了湿法炼锌黄钾铁矾法和针铁矿法的加酸能力。
Abstract: The potential-pH diagrams for magnetite-water and zinc ferrite-water systems at 25℃ and 100℃ have been constructed, by which we can explain thermodynamically the experimental result of zinc calcine hot acid leach, i.e, high temperature (1100℃) zinc calcine is much easier to leach than ordinary zinc calcine. The kinetic factors influencing zinc ferrite acid dissolution are also analyzed. Besides, the capacities of acid addition for Goethite and Jarosite processes are interpreted.