Magnetic dewatering tank and magnetic separator

(A) dehydrating tank Magnetic magnetic dewatering tank washing tank, also known as magnetic, the magnetic mineral particles is non-magnetic mineral particles and magnetic separation equipment under gravity and magnetic force, the fine particles for sorting or magnetic iron ore Dehydration. The dewatering tank is characterized by a magnetic system in the tank, a bottom magnetic system with a tower shape or a cylindrical shape, and a top magnetic system with a polygonal shape; the magnetic source can be divided into an electromagnetic magnetic system and a permanent magnetic system. The dehydration tank using the permanent magnetic system does not use electricity, and the equipment is simple, reliable, and easy to maintain, and has been widely used. The bottom tower-shaped magnetic system has a high magnetic field strength in the groove, high processing capacity, and wide application, and is especially suitable for a large magnetic dewatering tank. When the magnetic dewatering tank is used as a dewatering equipment for magnetic separation concentrate, the formula for calculating the number of units is as follows:

Where n——— select the number of units, Taiwan;
Q————The overflow flow calculated according to the production process quantity, m ³ /h;
A———Select the area of ​​the dewatering tank, m ² /set;
υ———Overflow velocity, mm/s, for magnetite concentrate ore size less than 0.15mm, υ=5mm/s; when ore grain size is less than 0.074mm, υ=2mm/s.
The structure of the magnetic dewatering tank is shown in the figure below.

(B) a magnetic separator magnetite beneficiation process plant, the concentrate before filtration weak magnetic separator used in place of thickener, fine particles of magnetite concentrate is more dilute dehydration. The equipment used in this dehydration method is small in size, convenient in configuration and management, and low in infrastructure investment. The concentration of concentrate after magnetic separation and dehydration can reach about 50%. The calculation of the number of magnetic separators used for dehydration of magnetic concentrates is the same as that of the equipment used for sorting operations, and is selected according to the equipment performance data.
(3) Hydrocyclone The hydrocyclone is a device that uses centrifugal force for grading and sorting. In addition to the grading operations commonly used for various materials in the concentrator, it can also be used as a centrifugal sorting device, such as a heavy medium cyclone. It is also used to de-sludge, dewater, and de-peel, concentrate concentrate, and return water facilities before flotation. When the original concentrator area is insufficient, the hydrocyclone can be used as the first stage dewatering equipment. The hydrocyclone has a simple structure, is easy to manufacture, has low equipment costs, large production capacity, and small floor space. The device itself has no moving parts and is easy to operate and maintain. However, since it requires pressure to supply the ore, the ore pressure must be kept stable. Therefore, when dynamic pressure is applied to the mine, the power consumption is large.
In the 1950s, China began to use hydrocyclones in concentrators.

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