Process for treating nickeliferous laterite ore containing limonite and serpentine fractions

摘要

A method of treating nickeliferous laterite ore containing limonite and serpentine fractions to improve its responsiveness to the known reduction roast-ammonium carbonate leach process. According to the process the limonite and serpentine fractions are roasted separately under different conditions and following roasting are leached separately. After leaching the two fractions are combined and are releached together.