对印尼低品位红土镍矿进行了系统的工艺矿物学表征,并在工艺矿物学表征的基础上对褐铁矿、蛇纹石和铬铁矿等矿物组分进行可选性研究.结果表明,该低品位红土镍矿属于典型的风化沉积变质型氧化矿,主要有价成分为Ni、Co和Cr,主要矿物组成为褐铁矿、蛇纹石、铬铁矿等,未见有Ni和Co的独立载体矿物.Ni和Co赋存状态较为分散,通过选矿方法来富集Ni和Co难度较大;Cr则主要赋存于铬铁矿中,可以通过选矿方法来富集Cr;高温可以促进褐铁矿向磁铁矿的转变.针对红土镍矿中的褐铁矿采用还原焙烧磁选工艺可以获得含镍品位1.98%,回收率88.42%的含镍磁选精矿;针对红土镍矿中的蛇纹石采用先正后反的浮选工艺可获得含钴品位0.17%,回收率为23.17%的含钴精矿;针对红土镍矿中的铬铁矿采用粗细分级-重磁联合工艺可获得含Cr2O3品位为35.17%、回收率为33.42%的铬精矿.“,”Process mineralogy of low-grade laterite nickel ore in Indonesia was systematically characterized and the beneficiation process of mineral components such as limonite, serpentine and chromite was studied on the basis of process mineralogy. The results show that the low-grade laterite nickel ore is a typical weathering sedimentary metamorphic oxidized ore, with the main valuable elements of Ni, Co and Cr and the main mineral components of limonite, serpentine, chromite, etc. There is no independent carrier mineral of Ni and Co in the raw ore, and the occurrence states of Ni and Co are relatively dispersed. For the limonite in laterite nickel mine, the nickel bearing magnetite concentrate with nickel grade of 1.98% and recovery rate of 88.42% can be obtained by reduction roasting magnetic separation process. For the serpentine in laterite nickel mine, the cobalt bearing concentrate with Co grade of 0.17% and recovery rate of 23.17% can be obtained by positive and reverse flotation process. A chromium concentrate containing 35.17% Cr2O3 and a recovery of 33.42% can be obtained by using the combined process of coarse and fine classification and gravity and magnetic.