<報文>中国金川産含銅ニッケル硫化鉱の浮選(第2報) : 捕収剤, 抑制剤および再摩鉱の効果について  [in Japanese] <Original Papers>Flotation of Copper-Nickel Sulphide Ores from the Jinchuan Mine, China (II) : On the Effects of Collectors, Depressants and Regrinding  [in Japanese]

The effects of the collectors such as xanthate, aerofloat, aerophine (3418A), aeropromoter (4037) and sodium mercaptobenzothiazole, the depressants such as meyprofloc, jaguar (CP-B and CMHP), tannic acid and carboxymethylcellulose, and the regrinding were investigated with respect to the flotation of coppernickel sulphide ores front the Jinchuan mine. The results obtained are as follows ; (1) The floatabilities of pentlandite and chalcopyrite with sodium mercaptobenzothiazole are similar to that of amylxanthate in the presence of sodium hexametaphosphate. (2) The collecting ability of aerofloat is excellent for chalcopyrite, but it is poor for pentlandite. Aeropromoter 4037 (ROSSNHR) and aerophine 3418 (R_2PSSNa) are effective in the flotation of pentlandite activated with copper sulphate. But both collectors are ineffective for pentlandite, when it is not activated with copper ions. (3) Carboxymethylcellulose increases the grade of nickel in the bulk concentrate, since it is an effective depressant of magnesium minerals such as serpentine. The effects of meyprofloc, jaguar (CP-B and CMHP) and tannic acid are less for these minerals. (4) The regrinding of bulk concentrate is considerably effective in depressing magnesium minerals. The bulk concentrate of nickel-copper having lower magnesium contents can be obtained by the combination of regrinding and the cleaning flotation in acidic pulp or by addition of sodium hexametaphosphate with amylxanthate.flotationnickel sulphide orespentlanditechalcopyritepyrrhotiteserpentineregulatorsdepressantscarboxymethylcellulosemeyproflocjaguartannic acidcollectorsxanthateaerofloataerophineaeropromotersodium mercaptobenzothiazole

The effects of the collectors such as xanthate, aerofloat, aerophine (3418A), aeropromoter (4037) and sodium mercaptobenzothiazole, the depressants such as meyprofloc, jaguar (CP-B and CMHP), tannic acid and carboxymethylcellulose, and the regrinding were investigated with respect to the flotation of coppernickel sulphide ores front the Jinchuan mine. The results obtained are as follows ; (1) The floatabilities of pentlandite and chalcopyrite with sodium mercaptobenzothiazole are similar to that of amylxanthate in the presence of sodium hexametaphosphate. (2) The collecting ability of aerofloat is excellent for chalcopyrite, but it is poor for pentlandite. Aeropromoter 4037 (ROSSNHR) and aerophine 3418 (R_2PSSNa) are effective in the flotation of pentlandite activated with copper sulphate. But both collectors are ineffective for pentlandite, when it is not activated with copper ions. (3) Carboxymethylcellulose increases the grade of nickel in the bulk concentrate, since it is an effective depressant of magnesium minerals such as serpentine. The effects of meyprofloc, jaguar (CP-B and CMHP) and tannic acid are less for these minerals. (4) The regrinding of bulk concentrate is considerably effective in depressing magnesium minerals. The bulk concentrate of nickel-copper having lower magnesium contents can be obtained by the combination of regrinding and the cleaning flotation in acidic pulp or by addition of sodium hexametaphosphate with amylxanthate.