Emery abrasive grinding process

Emery abrasive grinding process:Emery block from the boring process to the product packaging, experience many process links, during which the group selection to the semicolon selection process is more convenient. From the semicolon selection to magnetic separation, because the particle size number is many, it may not be equipped with a magnetic separator per number, so the transport process is appropriate messy. This puts forward whether to choose the first magnetic separation after grouping screening -- semicolon screening -- too large grain -- check packaging such a process, so that the process flow downstream, and then can reduce a lot of messy transport workload problem. Experiments show that through chemical treatment of green silicon carbide, 25#~180# mixed particle size, magnetic content of 0.37% before magnetic separation, magnetic content of 0.163% after magnetic separation, mixed magnetic separation speed than a single particle size commonly used magnetic separation speed is slightly slower, 2.16 tons per hour, This speed is still suitable for the screening speed of the current five-stage screening group, but slightly lower than the total screening speed estimated by the full semicolon screen. The magnetic content of the sand screened after the mixed particle size magnetic separation varies from 0.085% to 0.168%, which is the same level compared with the magnetic content of the single particle size magnetic separation products at the same time, 0.0685-0.218%. Therefore, it can be confirmed that the magnetic separator installed in the grouping screen before, is a feasible process transformation plan.

It is also possible to combine the large grain process directly with the semicolon screening. According to the screen used in the large grain, the screen number has been correspondingly larger than the screen number used in the two numbers, so the production capacity of the unit screen area of the large grain is far greater than the production capacity of the semicolon screening time. As long as the 2500 mm long screen frame is divided into a section, such as the front section 2000 mm or 1800 mm with a semicolon screen, after a section 500 mm or 700 mm with a large grain screen, screening the front section to take its sieve, to the back section so that it is transferred into the large grain screen and sieve under the screen (the skill requirements of the large grain screen screen and the same as the preceding phase 1), this can ensure that the product The large grain is 0. Figure 15-18 is the structural schematic of this dual-purpose screen frame. This method has been proved feasible by experiments in principle, but there is still a lack of many production verification. It is assumed that the deepening work, the end of the selection, magnetic separation process process transformation, will make the sand has always been downstream, the center no longer need to have the transfer link, the process is greatly simplified, its significance is appropriate. As for the magnetic separation after each process is not allowed to mix magnetic materials in the problem, due to the selection of the economy and the use of a lot of information, so it is not difficult to deal with.

There are also options to place the magnetic separation after the group screening and before the semicolon screening process, that is, the so-called group magnetic separation process. The long-term production practice has proved that it is not a problem in the magnetic separation of iron. However, if the semicolon selection is not carried out after the final screening, it is not close enough in the selection process, large-scale production may not be able to ensure that the percentage of large particles in the product is zero.