화학공학소재연구정보센터
Journal of the Korean Industrial and Engineering Chemistry, Vol.7, No.3, 453-463, June, 1996
염화암모늄에 의한 방연광의 염소화 반응
Chlorination of Galena with Ammonium Chloride
초록
NH4Cl을 염소화제로 사용하여 시약 PbS와 Pb함유 자연광물인 방연광의 염소화 반응에 대해 조사하였다. 방연광의 적정 염소화 반응조건은 반응온도 425℃, 방연광에 대한 NH4Cl의 무게비 4.0, 반응시간 2시간이었다. 이 조건하에서 방연광중의 PbS는 NH4Cl에 의해 효과적으로 PbCl2로 염소화되었으며 그 전화율은 90%였다. 방연광의 염소화 반응에서 염소화제로 사용한 NH4Cl은 NH3와 HCl로 효과적으로 분리되었으며 양론적으로 90%의 NH3 를 회수할 수 있었다.
The chlorination of reagent PbS and natural ore galena with NH4Cl was investigated to find a new extraction metallurgical process of lead. The proper conditions for the chlorination of galena were that reaction temperature ; 425℃, NH4Cl weight ratio to galena ; 4.0 and reaction time ; 2hrs. Under these conditions, PbS was successfully chlorinated to PbCl2 and the conversion was 90%. And also NH4Cl was effectively decomposed and was separated NH3 and HCl. HCl was a chlorinating agent and 90% of NH3 was recovered through this chlorination reaction.
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