HIGH PRESSURE ACID LEACHING OF REFRACTORY LATERITIC ORES COMPRISING NICKEL, COBALT AND SCANDIUM AND RECOVERY OF SCANDIUM FROM PREGNANT LEACH SOLUTION AND PURIFICATION PRECIPITATES

摘要

The present invention relates to a process for recovering nickel, cobalt and scandium from refractory lateritic nickel ores, wherein in this process, lateritic nickel ores are subjected to high pressure acid leaching process with sulphuric acid and nickel, cobalt and scandium is selectively recovered from the pregnant leach solution or purification precipitates resulting from releaching process.