What is the construction and working principle of a dry strong magnetic disk magnetic separator?
Dry strong magnetic disc magnetic separator for sorting a wide selection of weakly magnetic minerals again less than 2 to 3 mm and a rare metal ore. It has three types of single disc (diameter Ñ„ = 900 mm), double disc (Ñ„ = 576 mm) and three discs (Ñ„ = 600 mm). The magnetic field strength can reach 880 ~ 1440 kA / m. Among them, there are many double-disc applications with Ñ„ 576 mm, so take it as an example. This magnetic separator body portion is comprised of a "mountain" shaped electromagnet consisting of 4 and 5 rotatable suspension induction disc. The disc 4 is like a flip-flop dish with a diameter which is about one-half larger than the width of the ore belt 3. The disc is driven by a worm and worm gear, and the disc and the electromagnet can be adjusted by the hand wheel. The distance between the poles (adjustment range 0 to 20 mm).
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The figure below shows the structure of the ф576 mm double disc magnetic separator.
In order to prevent clogging, a weak magnetic field magnetic pole is placed in the ore cylinder 2 to pre-discharge the ferromagnetic mineral in the feedstock.
Its working principle and sorting process: after the ore is pre-discharged from the ore cylinder, it is evenly discharged onto the ore belt 3, and is sent by the belt to the magnetic field gap below the disc 4, and the weak magnetic mineral is subjected to The magnetic force is sucked onto the tines of the disc and brought to the sides of the belt with the rotation of the disc. Here, due to the sharp drop of the magnetic field strength, the magnetic products falling on both sides of the belt under the action of gravity and centrifugal force In the trough (generally concentrate), the non-magnetic product is transported by belt to the trough of the non-magnetic product (usually tailings).
The operating factors of the disk magnetic separator mainly include: thickness of the ore, magnetic field strength, working clearance and feeding speed.