CAJ | 학술논문

黄铜矿因其特殊的晶体结构在硫酸体系中较难溶解，采用硫化焙烧法使黄铜矿（CuFeS2）由复杂矿物组成及结构转变为易酸溶的简单硫化物（CuS，FeS2），并对黄铜矿及其硫化焙烧产物进行氧压酸浸对比实验研究．研究结果表明：350℃下黄铜矿与硫磺硫化焙烧60 min后，硫化焙烧反应进行的比较完全，焙烧产物中只有铜蓝CuS 和黄铁矿FeS2；当浸出温度为150℃、时间为120 min、氧分压为0.5 MPa、搅拌转速为700 r/min、木质磺酸钠为5 g/kg，液固比为7∶1，硫酸浓度为0.1 mol/L时，黄铜矿及硫化焙烧产物中铜的浸出率分别为45％和98％，经硫化焙烧后可显著改善黄铜矿在氧压酸浸过程中的溶解性能，为黄铜矿湿法冶炼工艺的工业化生产提供理论指导和技术支撑．
황동광인기특수적정체결구재류산체계중교난용해，채용류화배소법사황동광（CuFeS2）유복잡광물조성급결구전변위역산용적간단류화물（CuS，FeS2），병대황동광급기류화배소산물진행양압산침대비실험연구．연구결과표명：350℃하황동광여류광류화배소60 min후，류화배소반응진행적비교완전，배소산물중지유동람CuS 화황철광FeS2；당침출온도위150℃、시간위120 min、양분압위0.5 MPa、교반전속위700 r/min、목질광산납위5 g/kg，액고비위7∶1，류산농도위0.1 mol/L시，황동광급류화배소산물중동적침출솔분별위45％화98％，경류화배소후가현저개선황동광재양압산침과정중적용해성능，위황동광습법야련공예적공업화생산제공이론지도화기술지탱．
The special crystal structure of chalcopyrite makes it difficult to be leached in sulfuric acid system. Sulfidation roast process is studied in the present paper which transforms the chemical composition and structure of chalcopyrite into simple sulfides,which are more amenable to leaching.Both of the chalcopyrite and its sulfi-dation products are then leached for the extraction of copper in an appropriate leaching system.The results show that only covellite and pyrite could be found in the sulfidation product after being roasted for 60 min at 350 ℃which suggests nearly complete conversion of chalcopyrite.The leaching rate of copper from chalcopyrite and its sulfidation product,with leaching temperature of 150 ℃,time 120 min,oxygen partial pressure 0.5 MPa,stir-ring speed 700 r/min,and sulfuric acid 0.1 M,is 45% and 98%,respectively.The dissolve performance of chalcopyrite can be greatly improved by sulfidation roast.The results will provide theoretical instruction and tech-nological supports for industrializing application of chalcopyrite hydrometallurgy.