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HWAHAK KONGHAK,
Vol.29, No.1, 118-125, 1991
Vol.29, No.1, 118-125, 1991
염화암모늄에 의한 Chalcopyrite의 선택 염소화 반응
Selective Chlorination of Chalcopyrite with NH4Cl
Chalcopyrite로부터 FeS와 CuS를 분리하기 위하여 chalcopyrite의 구성성분 중 FeS만을 NH4Cl로 선택 염소화시키는 반응을 조사하였다. 이 염소화에 대한 적정조건은 질소기류 중에서 반응온도 375℃, 반응시간 30min, NH4Cl의 chalcopyrite에 대한 무게비 11.0, 시료 chalcopyrite의 입도는 -325mesh였다. 이 조건하에서 chalcopyrite 중의 FeS는 92.94% FeCl2로 염소화되었으며, 이 염소화 생성물을 물로 침출하여 얻어진 CuS는 Cu 55.89%의 조성을 가진 Covellite 구조였다.
The selective chlorination of FaS in the chalcopyrite with NH4Cl was investigated to find a new process for the separation FeS and CuS in the chalcopyrite. The proper conditions for this selctive chlorination were that reaction temperature 375℃, reaction time 30min, NH4Cl weight ratio to the chal-copyrite 11.0 and particle size of chalcopyrite -325mesh in the N2 atmosphere. Under the above mentioned conditions FeS in the chalcopyrite was converted to FeCl2, selectively. Synthetic CuS was produced by the leaching the chlorinated product with H2O was identified as covellite structure and was found to contain 55.89% Cu.
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