紫外光直接光氧化浸出铜渣  

Leaching of copper slags by direct photooxidation mechanism using ultraviolet light

作　　者：Zeynel Abidin SARI M.Deniz TURAN 

机构地区：[1]Department of Metallurgy-Iskenderun Vocational School of Higher Education,Iskenderun Technical University,31200,Hatay,Turkey [2]Department of Metallurgy and Materials Engineering,Fırat University,23119,Elazığ,Turkey

出　　处：《Journal of Central South University》2024年第5期1476-1493,共18页中南大学学报（英文版）

摘　　要：采用光化学反应研究了铜渣中Cu和Fe的溶解行为。实验采用石英玻璃夹套,在玻璃反应釜中间歇进行,在反应釜下埋入紫外线灯,并采用玻璃管作为送风装置。研究了不同波长UVA(365 nm)、UVB(311 nm)、UVC(254 nm)和真空UV光(185 nm)在浸出液中的行为。所有实验在相同条件下,在有和没有紫外线灯的情况下进行比较。研究了自由基形成机制对浸出环境的适应性及其在氧化溶液介质浸出中的可用性。在紫外光(185 nm)和非紫外光条件下,铜的提取率分别为85.1%和70.7%。综上所述,在紫外(185 nm)光反应器体系中,铜渣在最佳条件下的金属溶解率比无紫外光反应器体系效率更高。光化学反应器是使其适应湿法冶金应用和检验工艺的新途径。The dissolution behaviors of Cu and Fe from copper slags were investigated with photochemical reactions.Experiments were run intermittently with a quartz glass jacket in a glass reactor,by submerging ultraviolet(UV)lamps and using glass tube as an air supply distributed under the reactor.The behaviors of UVA(365 nm),UVB(311 nm),UVC(254 nm),and vacuum-UV(VUV)(185 nm)light at different wavelengths in a leaching solution were examined.All experiments were conducted comparatively in the presence and absence of UV lamps under identical conditions.The adaptation of the radical formation mechanism to the leaching environment and its usability in leaching by creating an oxidative solution medium were investigated.In the experiments in the UV light(185 nm)and non-UV light environments under optimum conditions,the copper extraction rates were obtained as 85.1%and 70.7%,respectively.In conclusion,the metal dissolution(Cu)behaviors at optimum conditions during leaching from copper slags in the photoreactor systems with UV(185 nm)light were more efficient than those without UV light.Moreover,photochemical reactor is a new approach to adapt them to hydrometallurgy applications and examine the process.

关 键 词：浸出 铜炉渣 光化学氧化 紫外线灯 氧化自由基 

分 类 号：TF811[冶金工程—有色金属冶金]