CAJ | 학술논문

探讨了赤铁矿、菱铁矿、褐铁矿磁化焙烧过程的热力学变化，指出不同矿石焙烧时需要的不同条件，为难选铁矿的磁化焙烧条件的选择提供理论依据。研究表明，赤褐铁矿磁化焙烧可以采用两种方式，即高温低CO浓度焙烧，或低温高CO浓度焙烧，低温焙烧在能耗上有一定优势；菱铁矿可以在中性气氛或弱氧化气氛中完成磁化焙烧，但存在气氛难以控制等问题，通过氧化-还原焙烧，可以方便控制反应气氛；当菱铁矿与赤铁矿的比例大于1∶1时，可以考虑在中性气氛中焙烧，否则，适宜的焙烧方案为氧化-还原焙烧。
탐토료적철광、릉철광、갈철광자화배소과정적열역학변화，지출불동광석배소시수요적불동조건，위난선철광적자화배소조건적선택제공이론의거。연구표명，적갈철광자화배소가이채용량충방식，즉고온저CO농도배소，혹저온고CO농도배소，저온배소재능모상유일정우세；릉철광가이재중성기분혹약양화기분중완성자화배소，단존재기분난이공제등문제，통과양화-환원배소，가이방편공제반응기분；당릉철광여적철광적비례대우1∶1시，가이고필재중성기분중배소，부칙，괄의적배소방안위양화-환원배소。
This paper discusses the thermodynamic process of hematite , siderite , and limonite in magnetic roasting,and states the different conditions for different ores ,which provides a theoretical basis for choosing the conditions of magnetic roasting of refractory iron ore .Studies have shown that hematite and limonite can be roasted in two ways ,namely ,high temperature and low CO concentra-tion roasting or low temperature and high CO concentration roasting ,the latter of which has some ad-vantages on energy .Siderite can be roasted in a neutral or a weakly oxidizing atmosphere ,but there are some difficult issues to control the atmosphere , which can be solved by oxidation-reduction roasting.When the proportion of siderite and hematite is greater than 1∶1, a neutral atmosphere roasting can be considered , otherwise , the appropriate solution is oxidation-reduction roasting .