The invention discloses a
machine-column combined
copper-
nickel rough concentrate regrinding and sorting method for
copper-
nickel sulfide ore. The method comprises the following steps that S1, first-stage ore
grinding is conducted, specifically, raw ore is subjected to first-stage ore
grinding and grading; s2, first-stage roughing, wherein water is added into a raw ore product obtained after first-stage
grinding and grading in a stirring tank for size mixing; s3, rough concentrate regrinding is conducted, specifically, concentrate obtained after first-stage roughing is conveyed to a regrinding
ball mill grading
cyclone to be graded; s4, finely selecting the first four tanks in one section once; s5, performing one-section and one-time fine selection for six grooves; s6, first-stage secondary fine selection; s7, one-stage and one-time fine
scavenging; s8, second-stage ore grinding; s9, second-stage roughing is conducted; s10, first four tanks are finely selected for the first time in the second section; s11, carrying out second-section primary fine selection on the rear 6 tanks; s12, carrying out second-stage secondary fine selection; s13, second-stage primary fine
scavenging is carried out; s14, second-section primary flotation column fine selection is carried out; s15, two-stage primary
scavenging is carried out; s16, second-stage secondary scavenging is carried out; and S17, second-section secondary flotation column fine selection is carried out.