基于自热型酸化提取铜冶炼渣中有价组分铁

发布时间：2018-08-09 13:55

【摘要】：本文以铜冶炼渣为研究对象,采用自热型反应,以加工业硫酸酸化、酸浸提取的方法提取有价元素铁。研究考察了液固比、自热反应温度、溶出时间、溶解温度因素对铜冶炼渣中铁溶出的影响规律,以单因素实验为基础,进行正交实验,优化浸提铜冶炼渣中铁的工艺条件。实验结果表明:铜冶炼渣酸浸提取铁的最优工艺条件为:自热反应温度90℃、液固比0.8、溶出时间30 min、溶解温度70℃,此时铁的提取率达到69.95%,通过XRF(X-ray fluorescence spectrometer,X射线荧光光谱分析仪)、SEM(scanning electron microscope,扫描电子显微镜)、XRD(Xray diffraction,X射线衍射仪)、EDS(energy dispersive spectroscopy,能谱仪)等手段对浸取渣的物相和微观形貌进行表征,分析结果表明:铜冶炼渣自热酸浸后,浸取渣中只有SiO_2、少量含铁化合物以及微量Ca SO4存在,说明铜冶炼渣通过自热式酸浸反应可以充分浸取其中的有价组分铁。该法为铜冶炼渣资源化高效利用探索出一条新的工艺思路。
[Abstract]:In this paper, copper smelting slag was used as the research object. The method of sulfuric acid acidification and acid leaching was used to extract valuable iron from copper smelting slag. The effects of liquid-solid ratio, self-heating reaction temperature, dissolution time and dissolution temperature on the dissolution of iron from copper smelting slag were investigated. Based on the single factor experiment, orthogonal experiments were carried out to optimize the technological conditions of iron extraction from copper smelting slag. The experimental results show that the optimum technological conditions for iron extraction by acid leaching from copper smelting slag are as follows: reaction temperature 90 鈩，

本文编号：2174283