4, grinding: the use of wet grinding or dry grinding material into 5-50μm particle size of ultrafine quartz sand; Quartz sand grinding operation usually adopts one-stage or lattice PTMS ball mill + overflow ball mill two-stage grinding, the second stage grinding operation and spiral PTMS magnetic separator classification or hydrocyclone form a closed loop, so as to ensure the fineness of grinding. In view of the disadvantages of traditional mill, such as fast wear and high energy consumption, adopting new wear-resistant rubber lining plate, changing rolling bearing to sliding bearing and enlarging the mill, it not only improves the mill operation rate, but also prolongates the service life of equipment and creates economic benefits for enterprises.
5, magnetic separation: select 50-15000 Gauss PTMS magnetic separator separator equipment, remove the magnetic minerals in the ore, such as: limonite, hematite, mica, garnet, pyrite, ilmenite, etc. Generally, at least two sections of magnetic separation are arranged in the process, and the main purpose of the leading section of magnetic separation is to remove the strong magnetic substances in the ore, so as to avoid adverse effects on the subsequent work.
The second magnetic separation is mainly to remove the weakly magnetic and extremely weakly magnetic minerals in the ore. The leading section magnetic separation generally adopts permanent magnet high intensity magnetic cylinder PTMS magnetic separator, with a magnetic field of about 6000-8000 Gauss. The second magnetic separation generally adopts permanent magnet high gradient magnetic separator or electromagnetic induction PTMS magnetic separator, the former due to small energy consumption, light weight, higher magnetic field gradient, relatively provincial investment, relative to the latter is more accepted by the market.
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