摘要
在锌焙烧烟尘热酸浸出过程中,来自于铁酸锌溶解的三价铁离子被用作焙烧烟尘中ZnS浸出的氧化剂.为了提高锌的浸出率,研究了在浸出过程中加入锌电解阳极泥对ZnS浸出的影响.考察的浸出条件包括阳极泥加入量、温度、硫酸浓度和反应时间.试验结果表明,阳极泥中的MnO2有助于焙烧烟尘中ZnS的氧化浸出.在最佳的条件下,通过加入阳极泥(锰加入量为焙烧烟尘质量的4%)可将锌的浸出率由94%提高到97%以上.
In the hot-acid leaching process of roasted zinc dust, the ferric ion obtained from ZnFe2O4 dissolution was used as oxidant to leach ZnS contained in the roasted dust. To improve the leaching efficiency, the effect of adding anode mud obtained from zinc electrowinning on zinc leaching was investigated, of which the leaching conditions including dose of anode mud, temperature, H2SO4 concentration and reaction time were tested. The results indicated that MnO2 in the anode mud is favorable to the oxidation leaching of ZnS in roasted dust. The leaching efficiency of zinc will therefore increase from 94 % to 97 % if the Mn dose is 4 % of roasted dust in anode mud under optimum conditions.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2006年第1期61-64,共4页
Journal of Northeastern University(Natural Science)
基金
国家自然科学基金资助项目(50234010)
关键词
锌焙烧烟尘
热酸浸出
阳极泥
ZnS的氧化
浸出率
roasted dust of zinc
hot-acid leaching
anode mud
oxidation of ZnS
leaching efficiency
