Laser Cutting Machine,Laser Cutter,Cnc Laser Cutting Machine,Fiber Laser Cutting Machine Feiquan Laser Technology Wuxi Co., Ltd. , https://www.feiquan-laser.com
1, the main floating nickel sulfide minerals and minerals may be a nickel-containing dozens, mainly of nickel iron ore minerals pentlandite [(Fe, Ni), Sg ], needles sulfur nickel ore (of NiS), nickel-sulfur purple Iron ore [(Ni,Fe)3S4]. Red nickel ore (NiAs) and nickel-bearing pyrite, nickel and copper are often associated. Copper minerals in nickel-copper ore, generally chalcopyrite. Ni ore often contain platinum, palladium, rhodium, iridium, osmium platinum group Wu cable. Gold River Mining Bonanza 1.5% nickel; nickel flotation PH value of 0.6% nickel containing mineral ore pyrite lean somewhat similar, in an acidic medium, activation of the iron ions pentlandite, at pH = 9 ~ 10 or more, iron ions form a hydrophilic iron hydroxide film, which acts as an inhibitor. For some nickel ore abroad, the pH value of flotation is between 3 and 5. The pH of the lean ore flotation in Jinchuan District of China is 5.5~6.5, and the nickel mineral can be activated by copper sulfate. As the collector of the nickel mineral, butyl xanthate, amyl xanthate, butyl ammonium black drug, C-125, MBT (a vulcanization accelerator for the rubber industry), E-105, and the like can be used. Generally, two or more kinds of the above-mentioned collectors are used in combination.
Since Ni ore generally produced in the basic rocks, high gangue minerals containing magnesium oxide, sodium hexametaphosphate used, carboxymethyl cellulose (modified or CMC), sodium silicate gangue minerals as inhibitors.
2. Basic method for flotation of Jinchuan nickel ore The main sulfide minerals of ore in this mine area are pentlandite, pyrrhotite, purple sulfur nickel ore, pyrite and chalcopyrite. The main gangue minerals are olivine and hui. Stone, hornblende and serpentine. The main nickel minerals, nickel pyrite and pyrrhotite and other sulfide minerals constitute a collection of sulfides, a part of which is irregularly veined embedded in the gangue minerals. Grinding fineness 70%~80%-74pm can separate 80%~85% of the target mineral monomer. The main useful ingredients are shown in Table 11-21. 
Nickel-copper mixed selection I: one coarse and one fine, natural PH value, Dinghuang medicine, pine oil. Suppressing gangue minerals with sodium hexametaphosphate Nickel-copper mixed selection II: a coarse three fine;
Floating sulfur: one thick and one sweep three fine.
The poor ore organizations have made many breakthroughs.
Nickel ore and its beneficiation method theory
Nickel ore and nickel ore selection
The rich mine has been selected for many years, and the principle process is shown in Figure 11-14.
Jinchuan Nickel Oxide ore flotation principle flow process two-stage grinding, three-cycle flotation
It is not difficult to see from Table 11-23: For lean ore, the original ore grinding to -74um can account for 80%; the flotation process should not be complicated; the flotation results in acidic medium prepared with sulfuric acid are better, at pH=5.5~6.5 Flotation under the conditions, the effect is good, the corrosion of the equipment is not large; the trial of a variety of pharmaceuticals, but the results are not much difference, generally can be used in combination with two or more collectors, bismuth preparations, copper sulfate activation However, the amount should be less than 600g / t. Some people think that the ore pyrite belongs to more than 46% of the total amount of sulfide minerals, and the nickel content is generally less than 0.1%, if 30% of the magnetic yellow is separated from the sulfide concentrate. Iron can increase the nickel concentrate grade from 7% to more than 12%, while the recovery of nickel is only 0.5%. It is recommended to expand the test on the basis of nine test plans as a basis for design.