For industry use, mica natural crystal mainly directly processed into desired products. The larger the mica crystal without defects, the higher its economic value. Therefore, in the process of beneficiation of mica ore, it is necessary to protect the natural crystals of mica from damage as much as possible.
The beneficiation process of mica ore includes two processes of flotation and wind selection.
After the ore rock crushing and grinding process, the mica monomer is dissociated. Under the action of the chemical agent, the mica becomes a foam product and is separated from the gangue. Mica flotation can be carried out in an acidic or alkaline slurry, and the long carbon chain amide cations and fatty acid anions are mica collectors. In the mica flotation process, three rough selections and three selections are required to obtain the mica concentrate.
Therefore, the mica ore flotation process is used to recover mica and fine-grain mica below 14 mesh in pegmatite and mica schist.
The mica wind selection process is generally: crushing → screening and classification → wind selection.
After the ore is crushed, the mica is basically formed into a flaky shape, and the gangue mineral feldspar, quartz and the like are in the form of massive particles. Accordingly, the multi-level grading is used to pre-divide the selected materials into narrower granules, and according to the difference in the levitation speed in the airflow, special air-conditioning equipment is used for sorting. The wind selection method is applicable to areas where water is scarce and has been used for actual production.
The European version jaw crusher (PE jaw crusher)produced by our company is specially used for the crushing of hard and strong abrasive materials.
Main parts: frame, eccentric shaft rotating part, crushing chamber, safety device, and a discharge adjusting device, etc.
Working principle: The motor drives the belt and the pulley, and the eccentric shaft makes the moving European jaw crusher swing up and down. When the moving European jaw crusher pushes the moving jaw to move to the fixed jaw, the material is crushed or squeezed. When the moving jaw and the moving jaw are retracted under the action of the eccentric shaft and the spring, the material that has been crushed or crushed before is discharged from the lower discharge opening of the jaw. As the motor rotates continuously, the jaw crusher is used to periodically crush and discharge the material to achieve mass production.
After the large piece of raw ore is manually sorted out, the material is fed into the grizzly screen, and the size of the screen is 100mm. The +100mm material is sent into the jaw crusher, then its crushed products enter the XB-602 vibrating screen sorting together with the product under the grizzly screen.
The grizzly screen (rod screen) has two layers of screens, the upper layer is a bar screen made of angle steel, the screen slit width is 20 mm, and the lower layer is a 20×20 mm square hole screen.
The coarse tailings were removed using a Humphrey spiral concentrator. The coarse concentrate from the heavy separation goes into the flotation process.
Three mixing tanks are used before flotation. The first mixing tank is added with lignosulfonate (or sodium silicate) to disperse the slime, and then the sodium carbonate is added to adjust the pH of the slurry to about 10; the second blending tank is added with the fatty amine acetate cation collector to make It interacts with the side of the muscovite and adsorbs it; the fat in the third blending tank is added with the amine acetate salt cation collector, so that it absorbs with the muscovite layer, and then the foaming agent is added. After a rough selection three times, the mica concentrate is obtained. The mica concentrate has a grade of 98% and a recovery rate of 85%.
According to the requirements of the mica crushing and beneficiation process, combined with the corresponding material feeder, vibrating screen and cone crusher, the crushing and screening system completed with the European version of the jaw crusher fully meets the process requirements in the mica beneficiation.
JXSC has many years of experience in the production of mineral processing equipment. In order to meet the requirements of different users for processing mica fineness, production, use and different process requirements, we will optimize the investment scale according to local conditions and optimize the investment scale to achieve the best economic benefits.
For the customer’s mica mineral processing project, we can send engineering and technical personnel to the site to carry out the on-site investigation, planning, design process, and is responsible for the later installation and commissioning and maintenance services. Discuss with us detailed.