Experimental Study on Beneficiability of Low-Grade Cobalt-Nickel Ore from Hebei Province
Beneficiation tests were conducted to process the low-grade cobalt-nickel ore from Hebei Province by adopting an asynchronous flotation flowsheet consisting sequentially of staged grinding,flotation of sulfide minerals and flotation of sulfurized oxide minerals.In the study,combined depressants were used for better depressing of slime,while regrinding process was introduced to intensify the sulfurization effect.Finally,a cobalt-nickel sulfide concentrate with Co grade of 2.00%and Ni grade of 3.90%and a cobalt-nickel oxide concentrate with Co grade of 1.47%and Ni grade of 2.73%were obtained.The total Co recovery and total Ni recovery reached 77.61%and 79.20%,respectively.In this way,the preliminary enrichment and recovery of Co and Ni resources can be realized,laying a foundation for their further purification.
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