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. Pigment Red,Red Ochre Pigment,Brilliant Red Pigment,Red Oxide Pigment lilygroup Co.,Ltd , https://www.zjpigment.com
Construction and working principle of dry strong magnetic disk disc magnetic separator
Figure 1 is a schematic view of the structure of a Ñ„ 576 mm double disc magnetic separator.
Figure 1 Schematic diagram of double disc magnetic separator
1- hopper; 2- ore cylinder; 3- belt; 4- induction disk; 5- solenoid
The main portion of this magnetic separation is composed of a "mountain" shaped electromagnet 5 and a rotatable suspension induction disc 4. The disc 4 is like a flip-flop dish with a diameter which is about 1/2 larger than the width of the ore belt 3. The disc is rotated by a worm and a worm wheel, and the disc can be adjusted between the disc and the electromagnet. Pole distance (adjustment range is 0 to 20 mm).
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.
The working principle and the sorting process are as follows: after the ore is pre-discharged of the ferromagnetic mineral from the ore cylinder, it is evenly discharged onto the ore belt 3, and is sent to the magnetic field gap under the induction disc 4 with the belt, weak magnetic The mineral is subjected to magnetic force and 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, it falls on both sides of the belt under the action of gravity and centrifugal force. The magnetic product is in the trough (generally a concentrate); the non-magnetic product is transported from the belt to the tailings end and discharged into the trough of the non-magnetic product (usually tailings).
The operating factors of the disc magnetic separator mainly include the thickness of the ore, the strength of the magnetic field, the working gap and the feeding speed.