Protecting method of electrode guide rod for insulating corrosion of electrolyte atmosphere

A technology of electrolyte and electrolyte powder, which is applied in the field of electrode guide rod protection that isolates electrolyte atmosphere corrosion, can solve problems such as damage to the protective layer, and achieve the effects of improved reliability, simple assembly process, and easy operation

Active Publication Date: 2015-04-08
GUIZHOU BRANCH CHINA ALUMINUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the protective layer is not formed "spontaneously" or "in-situ" during the use of the electrode guide rod, when the use conditions change or some factors fluctuate, the protective layer may be damaged

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Use 12wt% industrial alumina, 60wt% industrial quartz, 20wt% reagent sodium carbonate, 5wt% electrolyte powder, 3wt% glass powder, mix evenly, and prepare the sealing filler. Cover the electrode guide rod with a corundum tube, and there is a 4mm gap between the guide rod and the inner wall of the sleeve. Then pour the prepared sealing filler into the gap between the guide rod and the casing, vibrate to make it compact, and then seal it with corundum castable outside the casing. Among them, the corundum casing is a commercial product.

[0038] The electrode for guide rod protection according to this embodiment is the anode, which is tested in the aluminum electrolysis test. Both the guide rod and the connection between the guide rod and the electrode are above the liquid level of the electrolyte melt. After the end of the electrolysis test period (greater than 1000h), the electrode observation: the corundum castable outside the guide rod is intact, the corundum castabl...

Embodiment 2

[0040] Use 5wt% industrial alumina, 60wt% reagent quartz, 20wt% industrial sodium carbonate, 10wt% electrolyte, 5wt% glass powder, mix well, and prepare sealing filler. It is assembled on the electrode guide rod with a ferrite ceramic sleeve, and there is a gap of 2 mm between the guide rod and the inner wall of the sleeve. Then pour the prepared sealing filler into the gap between the guide rod and the casing, vibrate to make it compact, and then seal it with corundum castable outside the casing. Among them, the ferrite ceramic bushing is a self-developed product.

[0041] The electrode for guide rod protection according to this embodiment is the anode, which is tested in the aluminum electrolysis test. Both the guide rod and the connection between the guide rod and the electrode are above the liquid level of the electrolyte melt. After the end of the electrolysis test period (greater than 1000h), the electrode observation: the corundum castable outside the guide rod is int...

Embodiment 3

[0043] Use 20wt% industrial alumina, 40wt% reagent quartz, 20wt% industrial sodium carbonate, 10wt% electrolyte, 10wt% glass powder, mix well, and use alcohol to prepare a slurry-like sealing filler. Cover the electrode guide rod with a corundum tube, and there is a 4mm gap between the guide rod and the inner wall of the sleeve. Then pour the prepared slurry sealing filler into the gap between the guide rod and the casing, and then seal it with corundum castable outside the casing. Among them, the corundum casing is a commercial product.

[0044] The electrode for guide rod protection according to this embodiment is the anode, which is tested in the aluminum electrolysis test. Both the guide rod and the connection between the guide rod and the electrode are above the liquid level of the electrolyte melt. After the end of the electrolysis test period (greater than 1000h), the electrode observation: the corundum castable outside the guide rod is intact, the corundum castable a...

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Abstract

The invention discloses a protecting method of an electrode guide rod for insulating corrosion of an electrolyte atmosphere, and relates to a protecting method of an electrolyte guide rod of a noble electrode aluminum electrolysis cell. The protecting method is characterized in that a seal filling material is made by using aluminum oxide powder, quartz powder, sodium carbonate powder, electrolyte powder and glass powder as raw materials, wraps around the electrode guide rod, and forms a protecting layer which is of a thick melted glass body and is used for sealing a gap and insulating the electrolyte atmosphere and absorbing a swelling stress when normal electrolysis runs. By adopting the protecting method, the electrode guide rod is protected, so that the corrosion of the electrolyte atmosphere can be effectively insulated.

Description

technical field [0001] The invention relates to a protection method for an electrode guide rod for isolating electrolyte atmosphere corrosion, and relates to a protection method for an electrode guide rod of an aluminum electrolytic cell with an inert electrode. Background technique [0002] The current aluminum electrolysis industry mainly follows the Hall-Heroult molten salt electrolysis process. The anode is made of carbon material, and the carbon anode is continuously consumed, and at the same time emits a large amount of greenhouse gases such as carbon dioxide, carbon monoxide, and fluorocarbons, which has brought enormous pressure to carbon resources, energy, and the environment. [0003] The development of inert electrode aluminum electrolysis technology is the fundamental way to solve the high energy consumption and high emission of traditional aluminum industry. In the research and application of inert electrode aluminum electrolysis technology, the use of low-temp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C3/12
CPCC25C3/12
Inventor 包生重杨建红李晓星梁玉冬李致远王俊伟梁贵生
Owner GUIZHOU BRANCH CHINA ALUMINUM IND
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