含锌钢铁冶金固体废弃物提取金属元素的试验研究

根据含锌钢铁冶金固体废弃物的基本特性,提出了火法冶金-湿法冶金联合提取钢铁冶金固体废弃物中Fe、Zn等金属元素的工艺流程,并通过实验对该工艺流程的回收效率进行了验证。实验结果表明:该工艺能够实现冶金固体废弃物中Fe、Zn等金属元素的分离提取,而且能够合理地利用C元素。获得的金属铁中全铁含量能够达到95.52%,金属铁含量为94.81%,铁回收率为91.53%;锌纯度高达99.41%,回收率为93.82%。

RECOVERY OF Fe AND Zn FROM FERROUS METALLURGY SOLID WASTE CONTAINING ZINC

According to the fundamental properties of steel making solid wastes，a novel process combining pyrometallurgy and hydrometallurgy technologies was proposed in order to recycle Fe and Zn． And then a series of experiments were carried out to testify its recycling performance． The results showed that this process could not only separate and collect metal such as Fe and Zn，but also made good use of carbon in the solid wastes． In the product，the total iron content could reach 95. 52%，and metallic iron content could reach 94. 81%，thus the recovery rate of iron was up to 91. 53%; the purity of zinc reached 99. 41%，and the recovery of zinc was as high as 93. 82%．