ABSTRACT
With rapid economic development, low-grade nickel-containing polymetallic ore has become an important source for the production of nickel concentrate, copper concentrate, and other metals. According to process mineralogy, Jinping ore is a typical refractory nickel ore, containing 0.634% nickel and 0.329% copper. The ore contains a large number of gangue minerals, such as chlorite, mica, and others, which have a complicated relationship with valuable minerals. The complexity of mineral composition, distribution, and intercalation characteristics results in low nickel and copper recoveries. In this paper, a new process is researched and developed. The ore is ground to 75% -0.074 mm, and then mixed flotation process is carried out to obtain mixed concentrate, which undergoes two roughings, three beneficiations, and two sweeps. The obtained mixed concentrate contains 3.03% nickel, 73.03% recovery, 2.01% copper, 92.58% recovery, 0.24% cobalt, and 77.62% recovery.
