Nickel ore and its beneficiation method theory
The function of the Universal Shaft Assembly is to convert planetary motion into fixed constant rotation of the drive shaft, to transmit torque and speed from motor on the drive shaft, and to the bit. Cardan shaft mostly uses flat shaft, but some are flexible shafts. Out flat type shaft used on out downhole motor is made by linear cutting technology. So the cut has high parallelism, roughness can reach 6.3 and it doesn't damage metal chemical composition. Thus, is has a longer running life and less mechanical loss.
Downhole motor shall be disassembled as quickly as possible after use to examine cardan shaft. If it is found out that wear degree is over maintenance standard, relevant consumable components shall be changed promptly. If not, downhole motor can not be running normally due to overrun of the cardan shaft.
Universal Shafts Assembly And Parts Universal Shafts Assembly And Parts,Spheric Hinge Universal Shafts,Universal Joints,Shaft Electric Dc Motor Weifang Shengde Petroleum Machinery Manufacturing Co., Ltd. , http://www.sdpetromachine.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. 
