CAJ | 학술논문

以两种红土镍矿为研究对象，通过光学显微镜、电子显微镜、X 射线衍射等手段对试样进行了分析，对比其异同点，并进行选择性还原焙烧实验，研究红土矿原矿性质对其还原焙烧的影响。结果发现，两种试样所含主要矿物相同，载镍矿相同，镍在原矿中分布规律也相似，但由于 Fe、Si 和 Mg 含量的差异造成其选择性还原焙烧-磁选结果有很大差异。其原因可能是焙烧过程中铁、镁、钙等阳离子和硅氧离子形成不同硅酸盐，影响了焙烧矿的熔融性和镍的反应活性。
이량충홍토얼광위연구대상，통과광학현미경、전자현미경、X 사선연사등수단대시양진행료분석，대비기이동점，병진행선택성환원배소실험，연구홍토광원광성질대기환원배소적영향。결과발현，량충시양소함주요광물상동，재얼광상동，얼재원광중분포규률야상사，단유우 Fe、Si 화 Mg 함량적차이조성기선택성환원배소-자선결과유흔대차이。기원인가능시배소과정중철、미、개등양리자화규양리자형성불동규산염，영향료배소광적용융성화얼적반응활성。
Two types of nickel laterite ores were chosen as the object of study. Optical microscopy, scanning electron microscopy and X-ray diffraction were used to analyze the similarity and difference between the two ores. Both the ores were beneficiated by a se-lective reduction roasting-magnetic separation method for studying the influence of ore properties on direct reduction roasting. It is found that the main minerals, nickel-bearing minerals and nickel distribution are very similar in the two ores. But due to the difference in content of iron, silicon and magnesium, the beneficiation results using the selective reduction roasting- magnetic separation are quite different. This is probably the reason that in the roasting process, iron, magnesium and calcium cations react with silicate anions to form different silicates, affecting the melting properties of roasting ores and the reactivity of nickel.