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Aluminum solution stirring device of air-cooled composite magnetic field

A composite magnetic field and stirring device technology, applied in the direction of stirring device, dissolving, mixer, etc., can solve the problems of limited development, large power consumption, complex mechanism, etc., and achieve the effect of increasing the scope of action

Active Publication Date: 2011-11-02
SHANDONG HUATE MAGNET TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

AC excitation stirring is to use multiple coils placed in parallel, and use the periodic current phase difference method to form a traveling wave magnetic field to stir the molten aluminum. The problem with this stirring method is: large power consumption, a 30-ton aluminum melting furnace Using an AC excitation stirrer consumes 250 kW to 315 kW per hour, and the mechanism is complex and the failure rate is high
Due to the use of a large number of high-temperature-resistant magnetic materials for permanent magnetic stirring, although the power consumption is only one-tenth to one-fifteenth of that of AC excitation stirring, the magnetic material contains many rare metals, which are rare earth materials mined under state control. Expensive, compared with the same tonnage of AC excitation stirring, the cost is more than twice that of AC excitation stirring, which limits its development to a certain extent
The DC excitation stirrer adopts the form of parallel discharge of DC coils, there is no repulsive magnetic pole in the middle, and the magnetic force lines form the shortest loop. Although the power consumption is only about one tenth of that of the AC excitation stirrer, the magnetic field radiation area, depth and intensity are smaller. Small, the stirring range and the amount of aluminum solution to be stirred are small; moreover, because the DC coil adopts solid winding and natural cooling, the heat dissipation of the coil is slow, easy to overheat, the magnetic attenuation is large, and the excitation power should not be increased, so it can only be applied to small furnaces and It is used when the furnace bottom is thinner, and the application range is narrow

Method used

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  • Aluminum solution stirring device of air-cooled composite magnetic field
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  • Aluminum solution stirring device of air-cooled composite magnetic field

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Embodiment Construction

[0026] like figure 1 As shown, an aluminum solution stirring device of an air-cooled compound magnetic field includes a chassis 2, and a frame 5 installed on the chassis 2, and a rotating shaft 6 is vertically installed on the frame 5 through an upper bearing 4 and a lower bearing 19 , the bottom end of the rotating shaft 6 is connected to a power device that drives it to rotate, and the power device is controlled by the control system 12; plane, at least two grid-type DC coils 9 perpendicular to it are installed on the upper plane, and the grid-type DC coils 9 are evenly distributed in a ring shape, and iron cores are installed in each grid-type DC coil 9 10. The polarities of the same-direction ends of two adjacent iron cores 10 are opposite, and a permanent magnet 14 repelling the polarity of the upper end of each iron core 10 is installed between a plurality of the grid-type DC coils 9. The high-temperature permanent magnet 14 is installed and connected with the yoke 7 th...

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PUM

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Abstract

The invention discloses an aluminum solution stirring device of an air-cooled composite magnetic field. The aluminum solution stirring device comprises a rotating shaft which is vertically arranged on a frame, wherein the bottom end of the rotating shaft is connected with a power device; a magnetic yoke of which the upper plane inclines outwards is arranged at the upper end of the rotating shaft; at least two grid-type direct-current coils which are annularly distributed uniformly at intervals and are vertical to the upper plane are arranged on the upper plane; an iron core is arranged in each grid-type direct-current coil; the equidirectional ends of every two adjacent iron cores have opposite polarities; a high-temperature-resistant permanent magnet of which the polarity is repellent to that of the upper end of each iron core is arranged between every two grid-type direct-current coils; the outer side of each grid-type direct-current coil is provided with an air cooling device; and a non-magnetic outer cover is arranged above the frame. The stirring device disclosed by the invention has a large acting range on an aluminum solution in an aluminum smelting furnace under the action of a composite magnetic field formed by the coaction between an electromagnetic field and a permanently-magnetic field; the height and the intensity of a magnetic line of force are enhanced; and the aluminum solution stirring device has large permeation depth on the aluminum solution, large magnetic field force, large stirring force, high efficiency for stirring and a wide application range.

Description

technical field [0001] The invention relates to the technical field of non-contact stirring equipment in aluminum smelting, in particular to an air-cooled composite magnetic field aluminum solution stirring device installed at the bottom of an aluminum smelting furnace. Background technique [0002] During the aluminum smelting process, in order to speed up the melting speed and make the alloy composition uniform after adding the alloy, it is necessary to periodically stir the molten aluminum in the furnace. The currently used non-contact stirring methods are: AC excitation stirring, permanent magnetic stirring and DC excitation stirring. AC excitation stirring is to use multiple coils placed in parallel, and use the periodic current phase difference method to form a traveling wave magnetic field to stir the molten aluminum. The problem with this stirring method is: large power consumption, a 30-ton aluminum melting furnace Using an AC excitation stirrer consumes 250-315 ki...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27D27/00B01F13/08
Inventor 刘梅贾洪利刘风亮周宇舟孙永宝陈雷刘茂堂
Owner SHANDONG HUATE MAGNET TECH
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