Method for controlling flow of corundum smelting furnace through magnetic body

Abstract

The invention relates to a method for controlling the flow of a corundum smelting furnace through a magnetic body. The remote control corundum smelting furnace comprises a furnace body, a furnace cavity is formed in the furnace body, and an electric heating device is arranged in the furnace cavity. A blocking hole is horizontally formed in the middle portion of the side wall of the furnace body and communicates with the furnace cavity. A draining hole is formed in the lower end of the blocking hole, one end of the draining hole communicates with the blocking hole, and the other end opening of the draining hole obliquely and downwards communicates with the outer side of the furnace body. A blocking plunger is arranged in the blocking hole, and a permanent magnet is arranged in the blocking plunger. One side of the blocking plunger is provided with a first magnetic body and a second magnetic body which are fixedly connected, and the combined body of the first magnetic body and the second magnetic body can rotate. The first magnetic body magnetically attracts the blocking plunger, and the second magnetic body and a blocking plunger magnetic field are repellent. A flow guide groove is formed below the end opening, communicating with the outer side of the furnace body, of the draining hole, and a movable connecting ladle is correspondingly arranged below the oblique and downward side of the flow guide groove. By means of the method, continuous work can be achieved, long-distance control is conducted, work is safe, and the working environment is improved.

Description

[0001] This application relates to a divisional application with an application date of September 11, 2015, application number 2015105780945, and the title of the invention is a remote control corundum smelting furnace. technical field [0002] The invention relates to the technical field of metallurgy, in particular to a remote-controlled corundum smelting furnace. Background technique [0003] At present, the smelting of corundum is mainly done by dumping furnaces. The basic principle is: the furnace body of the dumping furnace is supported by trunnions, and the formula materials such as bauxite or alumina powder and other reducing agents are first added to the furnace body, and then , the current is fed through the three electrodes to melt the charge in the furnace body and react with the reducing agent. After the reaction is completed, the gear mounted on the trunnion is mechanically driven to make the trunnion rotate, thereby driving the furnace body to tilt and turning ...

AI Technical Summary

Problems solved by technology

[0005] 1. At the end of smelting, the corundum melt with a temperature as high as 2000 degrees pours down from a height of more than 5 meters, which will have a serious impact on the butt joint bag, and it is easy to overflow and burn the equipment;

[0006] 2. Due to the restriction of the transmission mechanism and the self-weight of the furnace body, the thickness of the refractory layer of the furnace body is not enough, so there are the following disadvantages:

[0007] (1) During the smelting process, accidents often occur that the melt burns through the refractory layer, causing the high-temperature melt to leak out and burn the water cooling system and equipment. In addition, the high-temperature melt will cause a violent explosion when it encounters water, causing casualties, equipment, equipment, etc. Accidents of plant damage;

[0008] (2) The refractory layer of the furnace body is not thick enough, the furnace wall needs to be cooled by water, and the cooling water will take away a lot of waste heat, which is not conducive to energy saving;

[0009] 3. Continuous production is not possible. The gap time from shutdown to restart is more than one hour, and a large amount of high-temperature waste heat in the furnace is lost, which is not conducive to energy saving and low equipment utilization;

[0010] 4. Before pouring high-temperature melt into the receiving bag every time, the electrodes need to be lifted off the furnace cover, which is prone to accidents of burning short nets;

[0011] 5. Every time the high-temperature melt is poured into the receiving bag, some of the bauxite remaining on the furnace mouth will be poured into the receiving bag with the high-temperature melt, which will affect the quality of the product

In addition, the exile method for smelting and producing corundum was proposed as early as the 1970s. However, due to the characteristics of corundum's high melting point, high strength and poor fluidity, the exile method for smelting production of corundum has not been realized.

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