CuFeS2 의 산화배소에 관한 연구 = A Study of the oxidizing Roasting of Chalcopyrite

국문 초록 (Abstract)

CuFeS₂의 溫度와 反應分圍氣 卽 空氣의 流速, 酸素의 分壓, SO₂gas의 分壓, 粒度等의 變化에 따른 連續的인 焙燒反應의 分解機構를 考察하였다. 實驗室에서 合成한 CuFeS₂ 化合物의 組成은 X-ray 回析로서 CuFeS_(1.8) 임을 確認하였다. 試料(CuFeS_(1.8)을 空氣의 流速 150cc/min과 溫度上昇 3℃/min으로 焙燒시킨 結果 分解 peak의 溫度 및 分解生成物은 다음과 같음을 알았다.
空氣의 流速, 酸素의 分壓에 對한 結果는 peak의 型에는 영향이 없고 粒度의 變化에 따라서는 peak가 高溫쪽으로 shift 됨을 알았다. SO₂gas가 少量이 있으면 Fe₂(SO₄)₃가 生成되어 새로운 peak(500℃ 附近)을 나타내는 것을 알았다.

다국어 초록 (Multilingual Abstract)

A study has been made to investigate the roasting mechanism of synthetic chalcopyrite, with varing the temperature, the reaction atmosphere(partial pressures of O₂ and SO₂), and the size of particles.
The composition of the chalcopyrite prepared at our laboratory was confirmed to be CuFeS_(1.8) by means of X-Ray diffraction technique.
Under the condition of the flow rate of air, 150cc/min and the rate of temperature increment 3 cc/min the following is postulated as possible successive decomposition steps commensurate with the observed D. T. A peaks and the X-Ray Analysis of end products.
Effects of the flow rate of air and the partial pressure of oxygen upon D. T. A. peak were not significant, while results were also indicated that in the presence of small amount of SO₂ a new phase Fe₂(SO₄)₃ was formed, which signified by a unique D. T. A. peak(about 500℃).