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Suspension type fire-resistant heat preservation assembly for large-capacity oxygen-aluminum co-production electrolytic cell.

A technology of refractory heat preservation and electrolytic cell, which is applied in the direction of electrolysis components, electrolysis process, cells, etc., can solve the problems of cracking of refractory heat insulation materials, etc., and achieve the effect of easy lifting, preventing exposure and heat loss, and convenient moving

Active Publication Date: 2020-02-07
浙江睿曦绿业新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Because of the need for heat preservation and reduction of heat dissipation, various refractory and heat-insulating suspensions are required on the upper part of the electrolytic cell, but the connection between the refractory and heat-insulating material and the metal will cause the refractory and heat-insulating material to break due to the thermal expansion or oxidation of the metal

Method used

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  • Suspension type fire-resistant heat preservation assembly for large-capacity oxygen-aluminum co-production electrolytic cell.
  • Suspension type fire-resistant heat preservation assembly for large-capacity oxygen-aluminum co-production electrolytic cell.
  • Suspension type fire-resistant heat preservation assembly for large-capacity oxygen-aluminum co-production electrolytic cell.

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Such as figure 1 As shown, it is a suspension assembly of a shaped refractory material; it includes a metal rod 1, a hose 2, an insulation layer 3 and a refractory layer 4, and the metal rod 1 is isolated from the aluminum electrolytic cell by the refractory layer 4;

[0040] The metal rod is wrapped with a hose 2, and the space between the metal rod 1 and the hose 2 is filled with an anti-expansion and anti-oxidation buffer powder mixture; the hose 2 is wrapped with an insulation layer 3, and the lower part of the insulation layer is provided with a refractory layer 4, and the insulation layer 3 and The refractory layer 4 is sealed; the metal rod 1 passes through the insulation layer 3 and fits with the insulation layer 3, and the insulation layer 3 and the refractory layer 4 fit together;

[0041] The refractory layer 4 in this design is made of shaped refractory material, the lower part is a high temperature zone and close to the electrolyte, the shaped refractory bl...

Embodiment 2

[0046] Such as figure 2 As shown, it is a suspension assembly of an amorphous refractory material; it includes a metal rod 1, a hose 2, an insulation layer 3 and a refractory layer 4, and the metal rod 1 is isolated from the aluminum electrolytic cell by the refractory layer 4;

[0047] The metal rod is wrapped with a hose 2, and the space between the metal rod 1 and the hose 2 is filled with an anti-expansion and anti-oxidation buffer powder mixture; the hose 2 is wrapped with an insulation layer 3, and the lower part of the insulation layer is provided with a refractory layer 4, and the insulation layer 3 and The refractory layers 4 are sealed; the metal rod 1 passes through the insulation layer 3 and extends to the refractory layer 4, and the amorphous refractory material is poured and fixed.

[0048] The refractory layer 4 of this design adopts amorphous refractory material: first fix the metal rod and the anti-expansion and anti-oxidation buffer material in place, and then...

Embodiment 3

[0054] Such as image 3 Shown is an amorphous refractory suspension assembly.

[0055] It includes a metal rod 1, a hose 2, an insulation layer 3 and a refractory layer 4, and the metal rod 1 is isolated from the aluminum electrolytic cell by the refractory layer 4;

[0056] The metal rod is wrapped with a hose 2, and the space between the metal rod 1 and the hose 2 is filled with an anti-expansion and anti-oxidation buffer powder mixture; the hose 2 is wrapped with an insulation layer 3, and the lower part of the insulation layer is provided with a refractory layer 4, and the insulation layer 3 and The refractory layers 4 are sealed; the metal rod 1 passes through the insulation layer 3 and extends to the refractory layer 4, and the amorphous refractory material is poured and fixed.

[0057] The refractory layer 4 of this design uses amorphous refractory materials: first fix the metal rod and the anti-expansion and anti-oxidation buffer material in place, and then pour the a...

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Abstract

The invention belongs to the technical field of aluminum smelting, and particularly relates to a suspension type fire-resistant heat preservation assembly for a large-capacity oxygen-aluminum co-production electrolytic cell. The assembly comprises a metal rod, a hose, a heat preservation layer and a fire-resistant layer, wherein the metal rod and the aluminum electrolytic cell are isolated throughthe fire-resistant layer; the metal rod is wrapped with the hose, and the space between the metal rod and the hose is filled with an anti-expansion and anti-oxidation buffer powder mixture; the hoseis wrapped with the heat preservation layer, the fire-resistant layer is arranged at the lower part of the heat preservation layer, and the heat preservation layer and the fire-resistant layer are sealed; and the metal rod, the heat preservation layer and the fire-resistant layer are fixedly connected. The invention provides the fire-resistant heat preservation assembly which can be freely combined, is easy to lift and convenient to move for the large-capacity non-carbon anode vertical electrolytic cell, and the problem that the fire-resistant heat preservation material is broken due to thermal expansion or oxidation of the metal when the fire-resistant heat preservation material is connected with the metal is well solved.

Description

technical field [0001] The invention belongs to the technical field of aluminum smelting, and relates to a hanging fire-resistant and heat-preserving assembly for a large-capacity alumina co-production electrolytic cell. Background technique [0002] The current Hall-Herout aluminum electrolytic cell uses consumable carbon anodes, which not only consume a large amount of carbon materials mainly composed of high-quality petroleum coke, but also emit a large amount of greenhouse gas CO 2 , strong greenhouse gas fluorocarbons (CF 4 、C 2 f 6 ), SO 2 , and in the current aluminum electrolysis process, it is necessary to continuously replace the prebaked anode carbon block, resulting in unstable electrolytic production, increased labor intensity, personal risks for workers facing high-temperature melts, and fugitive emissions of fluoride; prebaked Carcinogenic aromatic compounds (PAH), SO 2 , dust, these are one of the main sources of PM2.5; in addition, the use of carbon ano...

Claims

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Application Information

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IPC IPC(8): C25C3/08C25B1/02C25B9/00
CPCC25B1/02C25B9/00C25C3/085
Inventor 杨建红
Owner 浙江睿曦绿业新材料科技有限公司
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