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Electrolytic aluminum waste material separating method and electric arc furnace

A separation method and electrolytic aluminum technology are applied in the field of electric arc furnace for electrolytic aluminum waste separation and electrolytic aluminum waste separation, which can solve the problems of long heating time and cumbersome separation method, and achieve the effects of simple operation, small particles and high purity.

Inactive Publication Date: 2013-11-27
彭龙生
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Compared with other disclosed technologies, this method has been greatly improved in the separation of electrolytic aluminum waste, but there are still problems such as cumbersome separation methods and long heating time.

Method used

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  • Electrolytic aluminum waste material separating method and electric arc furnace

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Embodiment 1

[0018] Embodiment 1: Embodiment of electric arc furnace of the present invention

[0019] refer to figure 1 , the electric arc furnace embodiment comprises a furnace body 1, a furnace lining 2, a graphite electrode 3 is provided on the central upper side of the furnace body 1, a molten pool 4 with an outlet 41 is provided at the inner lower end of the furnace body 1, and a pouring tank 4 is provided on the lower side of the molten pool 4. Device 5, the outside of the furnace body 1 is provided with an electrode lifting mechanism 6 connected to the graphite electrode 3 through an electrode arm 61, and a gas collection device 7, an air extraction pipeline 8, a particle collection device 9, an air extractor 10, and a gas collection device 7 is located above the melting pool 4, the gas collection device 7 is connected to the air extractor 10 through the air extraction pipe 8, and the particle collection device 9 is installed in the middle of the air extraction pipe 8.

[0020] Th...

Embodiment 2

[0022] Embodiment 2: the method embodiment of the present invention

[0023] A kind of preferred embodiment of the present invention, electric arc furnace is as embodiment 1.

[0024] Put the electrolytic aluminum waste into the electric arc furnace. The electrolytic aluminum waste is one of fire eye carbon slag, anode ash or anode paste, cathode carbon block or cathode paste. Turn on the power supply and heat it at 3000℃~4000℃ through the electric arc. The carbon powder is separated from other components, and the other components become gas, thus obtaining high-purity carbon powder. Among them, other components become gases as fluoride, chloride, cyanide, sulfur, iron or silicon vapor.

[0025] Other components become gas, which is collected and cooled by the gas collection device 7 and the particle collection device 9, and finally extracted by the air extractor 10 for recovery.

Embodiment 3

[0026] Embodiment 3: the method embodiment of the present invention

[0027] Put the electrolytic aluminum waste into a high temperature resistant container. The electrolytic aluminum waste is one of fire eye carbon slag, anode ash or anode paste, cathode carbon block or cathode paste. The bottom of the container is grounded, and the welding torch of the electric welding machine clamps a piece Carbon rod, move the welding torch, keep a certain distance between the carbon rod and the upper surface of the electrolytic aluminum scrap in the container, let the arc generate, heat through the arc at 3000 ℃ ~ 4000 ℃, under the high temperature of the arc, other components in the electrolytic aluminum scrap , mainly fluoride, chloride, cyanide, sulfur, iron or silicon into gas, so as to be separated from the carbon powder in the electrolytic aluminum waste to obtain high-purity carbon powder.

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Abstract

An electrolytic aluminum waste material separating method is used for carrying out high temperature heating on electrolytic aluminum waste material through electric arc, separating carbon powder from other components, and converting other components to be gases, thereby obtaining high purity carbon powder, wherein electrolytic aluminum waste material is subjected to drying pretreatment and then crushing pretreatment, and the components become gases to be recovered through a collecting and cooling method; an electric arc furnace used for separating electrolytic aluminum waste material comprises a furnace body and a furnace lining; a graphite electrode is arranged on the upper side of the centre of the furnace body, a molten pool is arranged at the lower end of the inner side of the furnace body, an electrode elevating mechanism connected with the graphite electrode through an electrode arm is arranged on the outer side of the furnace body, the electrolytic aluminum waste material is placed in the molten pool, a gas collection device is mounted above the molten pool, the gas collection device is connected with a pump-line, and a particle collection device is connected to the middle part of the pump-line. The method is simple to operate, the heating time is shortened, and high purity carbon powder is obtained.

Description

technical field [0001] The invention relates to the technical field of recycling electrolytic aluminum waste, in particular to a method for separating electrolytic aluminum waste and an electric arc furnace for separating electrolytic aluminum waste. Background technique [0002] Entering the 21st century, the production of electrolytic aluminum in my country and the world has developed rapidly. According to statistics, in 2009 the world produced a total of 36.36 million tons of electrolytic aluminum, of which China’s output of electrolytic aluminum accounted for about 35.64% of the global output of electrolytic aluminum in the same period; in 2011, my country produced a total of 18.0617 million tons of electrolytic aluminum, an increase of 11.53% year-on-year. [0003] As the production of electrolytic aluminum increases, the production of waste generated during the electrolysis process also increases rapidly. Electrolytic aluminum waste mainly includes alumina dirt and tr...

Claims

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Application Information

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IPC IPC(8): C01B31/02C01B32/05
Inventor 彭龙生
Owner 彭龙生
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