Selective reduction process and magnetic separation of nickel lateritic ore were conducted through the two-stage thermal mechanism with the addition of sodium sulfate and sodium chloride as the additives agent. The first thermal process was pre-heating at the temperature of 500°C and holding for 90 minutes. Afterward, the reduction continued at the temperature of 1150°C for the same holding time. The mineralogical composition of the reduced samples was determined by XRD. The micro structure of reduced nickel laterite ore was also examined using SEM-EDS. The optimum composition of the additive was the combination of 10% Na2S04 + 10% NaCl, which produced a concentrate with 5.52% and 85.89% for nickel grade and nickel recovery, respectively.
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机译：通过加入硫酸钠和氯化钠作为添加剂，通过两级热机理进行镍外矿石的选择性还原过程和磁性分离。第一热过程在500℃的温度下预热并保持90分钟。之后，减少在1150℃的温度下继续相同的保持时间。通过XRD测定还原样品的矿物学组成。还使用SEM-EDS检查还原镍红肿矿石的微结构。添加剂的最佳组合物是10％Na 2 SO 4 + 10％NaCl的组合，其分别产生5.52％和85.89％的浓缩物，分别用于镍级和镍恢复。
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