Ball mill for silica sand grinding
Date：2013-11-13 03:17:13 ?? Source：Clirik
Silica sand production process, due to various reasons often production index volatility, even appear to be of poor quality, with permanent magnet drum magnetic separator in addition to iron, often appear the following situations:
(1) magnetic field intensity is weak. Magnetic separator to use after a period of time, the magnetic field strength weakened to a certain extent, weak depends on the magnetic material performance and adopted by the magnetic saturation degree, magnetic cylinder should be replaced in a timely manner.
(2) large gap at the bottom of the tank. Magnetic drum and tub at the bottom of the clearance should not be too large, otherwise the depth of field effect is abate, influence iron removal effect, generally 20-30 mm.
(3) to mine. Uniform feed is important guarantee to obtain a good separation indexes, reasonable feed device can make the mineral is uniformly distributed in the surface of magnetic drum, avoid due to the uneven feed of the local large amount of pulp, results in the decrease of the recovery of iron magazine.
(4) not discharging net. Irrigation water discharging magnetic separator is difficult to will be a small amount of ferromagnetism content thoroughly rinsed clean, this is because the ferromagnetic material is easy to high-pressure flushing water rushed back inside the tub, accumulate at the bottom of the tub in the discharging mouth, to a certain extent when with the bottom into the products, which reduces the iron removal effect.
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