Resistance furnace for separating and recycling aluminum reduction cell lining solid waste and petroleum coke for desulfurization

An aluminum electrolytic cell and solid waste technology, which is applied in the metallurgy and environmental fields, can solve the problems of uneven heating current distribution, low and high temperature of the conductive current resistance heating body, and the cross section cannot be too large, so as to expand the loading capacity of a single furnace, The effect of uniform axial current distribution, improved production efficiency and separation effect

Inactive Publication Date: 2017-05-10
SHENYANG BEIYE METALLURGIGAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the device invented by the patent CN 105603216 A uses a graphite block with good conductivity in the scrap material of the aluminum electrolytic cell waste cathode carbon block as a resistance heating element, it can make some adjustments to the problem that the conductive current is biased to the inner loop , but this problem cannot be completely solved by this method, the problem of the conduction current being small...

Method used

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  • Resistance furnace for separating and recycling aluminum reduction cell lining solid waste and petroleum coke for desulfurization
  • Resistance furnace for separating and recycling aluminum reduction cell lining solid waste and petroleum coke for desulfurization
  • Resistance furnace for separating and recycling aluminum reduction cell lining solid waste and petroleum coke for desulfurization

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Effect test

Embodiment 1

[0074] Figure 1 shows the structure of the resistance furnace for separation and recovery of aluminum electrolytic cells lined with solid waste and petroleum coke desulfurization, the structure of the A-A surface is shown in Figure 2, the B-B surface structure is shown in Figure 3, and the C-C surface structure is shown in Figure 4 ;Including furnace shell (4), spherical crown furnace cover (12), furnace lining (5), barrel refractory concrete masonry (1), refractory concrete roof (10), insulation cover plate (11) and two graphite The electrode (16); the furnace shell (4) and the spherical crown furnace cover (12) are made of steel plates, the top of the furnace shell (4) is provided with a cooling water jacket (27), and the top of the furnace shell (4) is connected with the spherical crown furnace Vacuum gaskets (19) are set between the covers (12) for sealing connection; the inner wall of the furnace shell (4) is connected to the furnace lining (5), and the furnace lining (5) ...

Embodiment 2

[0081] The structure of the electric resistance furnace for separating and recycling aluminum electrolytic cell lining solid waste and petroleum coke desulfurization is shown in Figure 5, and the B-B surface structure is shown in Figure 6, and the structure is the same as in Example 1, except that:

[0082] Barrel-type refractory concrete masonry (1) The outer wall and inner wall are both barrel-shaped, and the horizontal section of the external well-type auxiliary material room formed between the well-type main material room and the barrel-type refractory concrete masonry is non-rectangular.

Embodiment 3

[0084] The structure of the resistance furnace for separation and recovery of aluminum electrolytic cells lined with solid waste and petroleum coke desulfurization is shown in Figure 7, the structure of the A-A surface is shown in Figure 8, the structure of the B-B surface is shown in Figure 9, and the structure of the C-C surface is shown in Figure 10 ; Structure is the same as embodiment 1, and difference is:

[0085] Barrel-type refractory concrete masonry (1) The horizontal cross-sections of the outer wall and inner wall are polygonal, and the horizontal cross-sections of each well-type main material room and each well-type auxiliary material room are square or rectangular.

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Abstract

The invention relates to a resistance furnace for separating and recycling aluminum reduction cell lining solid waste and petroleum coke for desulfurization. The resistance furnace comprises a furnace shell, a ball coronary furnace lid, a furnace lining, cylinder-type fire-resistant concrete masonry, a fire-resistant concrete top plate, a heat insulating cover plate and two graphite electrodes; a well type main material chamber, a well type auxiliary material chamber and a well type cavity which are formed by multiple fire-resistant concrete walls in an enclosure mode are arranged between the inner wall of the cylinder-type fire-resistant concrete masonry and a fire-resistant concrete sleeve, the well type main material chamber is filled with resistance heating elements formed by fragment materials of aluminum reduction cell cathode carbon blocks or fragment materials of a petroleum coke top plate, and an upper graphite electric conductor and a lower graphite electric conductor connects the resistance heating elements in series. According to the device, by means of vertically arranged resistance heating elements, at the same time of uniformly distributing the temperature in the radial direction of a cylinder type furnace body, the effect of uniformly distributing an axial current is achieved, compared with a traditional technology, a single furnace loading capacity can be further expanded, and the production efficiency and separation effect are improved.

Description

technical field [0001] The invention belongs to the technical field of metallurgy and environment, and in particular relates to a resistance furnace for separating and recovering aluminum electrolyzer lining solid waste and petroleum coke desulfurization. Background technique [0002] Aluminum is produced by cryolite-alumina molten salt electrolysis. The electrolytic cell used for cryolite-alumina molten salt electrolysis to produce metal aluminum produces a large amount of fluoride electrolyte and metal sodium in the process of overhaul after damage. Waste cathode carbonaceous carbon blocks and solid waste of refractory materials containing fluoride. The fluoride electrolyte in these solid wastes is a toxic and harmful substance. If these solid wastes are discarded, it will have a serious impact on the environment. Therefore, people have not stopped Research on harmless treatment, separation and recycling of aluminum electrolytic cell solid waste. Many patents have been ap...

Claims

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Application Information

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IPC IPC(8): F27B1/04F27B1/09F27B1/10F27B1/14F27B1/24
CPCF27B1/04F27B1/08F27B1/10F27B1/14F27B1/24F27M2001/04F27M2001/05
Inventor 冯乃祥
Owner SHENYANG BEIYE METALLURGIGAL TECH CO LTD
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