Magnetic separator

FIELD: separation of materials by magnetic properties; concentration of ferrous metal ores.

SUBSTANCE: proposed magnetic separator includes feeder, bath, loading channel for initial pulp and unloading channels for magnetic and non-magnetic products and working member in form of non-magnetic drum with magnetic system arranged inside it; this magnetic system includes main and additional permanent magnets at alternating polarity. Additional permanent magnets are located between main permanent magnets mounted above unloading channel used for non-magnetic product and main permanent magnets are located above loading channel; they have integral monopolar surface closing the said loading channel.

EFFECT: enhanced efficiency of magnetic separation.

1 dwg

 

The invention relates to the separation of materials for magnetic properties and can be applied when the concentration of ferrous metals.

Known magnetic separator for asssss, No. 1440546, IPC 4 In 03 With 1/10, BI No. 44, 1988, including the feeder, the working body in the form of a non-magnetic drum located therein magnetic system of permanent magnets, respectively placed over the boot channel with a bathtub and discharge channels for the concentrate and tails.

Known magnetic separator for asssss, No. 668705, IPC 4 In 03 With 1/10, BI No. 23, 1979, which includes a feeder, a working body in the form of a non-magnetic drum located therein magnetic system of the main permanent magnets, respectively placed over the boot channel with a bathtub and discharge channels for the concentrate and tails.

In contrast to the claimed magnetic system of permanent magnets in the area of the discharge channel to concentrate mounted for displacement relative to the drum surface.

Known magnetic separator for asssss, No. 1424869, IPC 4 In 03 With 1/10, BI No. 23, 1988, including the feeder, loading the channel with a bathtub, the discharge channels under magnetic and non-magnetic products and the working body in the form of a non-magnetic drum located therein magnetic system of the main and additional permanent magnets

In contrast to declare the first separator permanent magnets, placed over the boot channel is made with a height of 0.5 to 0.75 of the height of the rest of the main magnets. Additional magnets are wedge-shaped, is placed between the main permanent magnets, which are mounted above the discharge channel under magnetic product.

The analysis of the known magnetic separators found that improvement in the main indicators of separators reach by changing the magnitude of the magnetic field in the working area of the separator. For example, in a magnetic separator according to the prototype of the magnitude of the magnetic field strength is reduced over the boot channel with a bathtub, where the extraction process of the magnetic product, and in front of the discharge channels of the magnetic field strength is increased.

However, this distribution of the parameters of the magnetic field does not provide optimum floculation and selective separation of magnetic and non-magnetic products, which is reflected on the quality of the separation process.

In addition, the magnetic field formed separate permanent magnets with alternating polarity poles, has a high attenuation coefficient. Therefore, decreases the depth of the magnetic field and the time of its impact on the original product, which reduces the efficiency of the process of magnetic CE is arachi.

The basis of the invention the task is to improve the magnetic separator by increasing the depth of penetration of the magnetic field in the direction of download bandwidth and time interval of its impact on the original product, to ensure optimum floculation and selective separation of magnetic and non-magnetic product and to increase the efficiency of the process of magnetic separation.

This object is achieved in that in a magnetic separator, comprising a feeder, a bath, a boot channel under the original product and discharge channels for the magnetic and non-magnetic products, work the body in the form of a non-magnetic drum located inside the magnetic system of the main and additional permanent magnets with alternating polarity poles, according to the invention, additional permanent magnets placed between the main permanent magnets installed on the discharge channel under non-magnetic product, and the main permanent magnets on the boot channel are integrally whole monopolar surface, and is made with overlapping referred boot channel.

Due to the fact that the permanent magnets on the boot channel are integrally whole monopolar surface, the magnetic system on the boot channel obtained the magnetic field, with the lowest attenuation factor. Thus the depth of penetration of the magnetic field increases and increases the time interval of its impact on the original product, as well as the duration of pre-preparation, i.e. the magnetization and floculation magnetic particles of the original product.

Thus, there is obtained a very favorable magnetization and floculation magnetic particles of the original product, providing increased process efficiency of magnetic separation and the quality of the magnetic product by reducing its clogging by particles of non-magnetic product.

The implementation of integrated solid monopolar surface overlapping the boot channel separator increased volume of the original product under the influence of a magnetic field having the smallest attenuation factor.

The invention is illustrated by the drawing, which shows a General view of the magnetic separator.

Magnetic separator contains a feeder 1, a tub 2, the loading channel 3 under the original product, the discharge channel 4 under magnetic product, the discharge channel 5 under the non-magnetic product, work the body in the form of a non-magnetic drum 6 is located inside the magnetic system of the core 7 and an additional 8 permanent magnets with che is abusada polarity of the poles. Additional permanent magnets 8 are placed between the main magnets 7 in front of the discharge channel 5 under the non-magnetic product. The main permanent magnet 7 is placed over the boot channel 3 and have integral one-piece surface 9. To provide integrated one-piece monopolar surface 9 is used, for example, solid magnet or n-magnets of the same polarity, set in tight contact with each other. Monopolar surface 9 is made with overlapping boot channel and is 1.2-1.4 its width.

Magnetic separator works as follows.

The original product from the feeder 1 by gravity through the loading channel 3 is supplied into the tub 2. In the zone of the boot channel 3 under the influence of a magnetic field with a low coefficient of attenuation of the magnetic particles are pre-processed, i.e. the magnetization their subsequent selective floculation. The formation of flocs is carried out as a function of time and magnitude of the magnetic field as it moves the original product in the working area of the separator. As the magnitude of the magnetic field strength increases as it approaches the integral one-piece monopolar surface 9, is selectively formed flocculi, retrieved on the surface of the nonmagnetic drum 6 and are transported in the areas of the discharge channel 4 under magnetic product. Under the action of the magnetic field core 7 permanent magnets with alternating polarity poles, over discharge channel 4 under magnetic product, magnetic forces ensure the retention of magnetic material on the surface of the nonmagnetic drum 6 to the date of his discharge.

The part is not extracted magnetic product, along with a stream of non-magnetic material under the action of hydrostatic forces discharged into the discharge channel 5 under the non-magnetic product, in which a magnetic field of high intensity, formed of a magnetic system consisting of the core 7 and an additional 8 permanent magnets with alternating polarity poles. Under the influence of this magnetic field is the additional extraction of magnetic particles on the surface of a rotating magnetic drum 6, which transports them into the discharge channel 4 under magnetic product, and non-magnetic product is unloaded in the tails.

Magnetic separator comprising a feeder, a bath, a boot channel under the original pulp and discharge channels for the magnetic and non-magnetic products, work the body in the form of a non-magnetic drum located inside the magnetic system of the main and additional permanent magnets with alternating polarity poles, characterized in that the additional permanent magnets placed IU the remote control main permanent magnets, mounted over the discharge channel under non-magnetic product, and the main permanent magnets on the boot channel are integrally whole monopolar surface, made with overlapping referred boot channel.



 

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