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Method for manufacturing anode protection ring

A technology of an anode protection ring and a manufacturing method are applied in the field of anode protection ring to achieve the effects of protecting the ecological environment, solving the emission problem and reducing the production cost

Inactive Publication Date: 2009-05-20
河南神火铝业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method for producing anode steel claw protection rings mainly using waste in electrolytic aluminum production, so as to solve the problems of waste utilization, environmental pollution reduction and production cost reduction

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: Ordinary protection ring

[0021] Take 17.5 kg of aggregate under sieve with a particle size of 5-10 mm, 27.5 kg of sieve with a size of 0.3-0.5 mm, 5 kg of dust collection powder below 0.3 mm, 5 kg of coal tar pitch, and 3.5 kg of coal tar , Put the above raw materials into the kneading pot and stir, heat for 40 minutes, stir for 10 minutes, then stir once every 10 minutes, stir 3 times in summer, stir 5 times in winter, and finally control the temperature in the kneading pot at 130 ° C, Pour it into an incubator for standby. The production temperature is controlled within the range of 100°C, and it is mechanically pressed and formed by a hydraulic press.

Embodiment 2

[0022] Embodiment two: waste paste protective ring

[0023] Take 15 kg of aggregate under the sieve of the residual electrode with a particle size of 5-10mm, 12.5 kg of the sieved material of the residual electrode with a particle size of 0.3-0.5mm, 7.5 kg of the dust collection powder of the residual electrode below 0.3mm; 15 kg of waste paste, and 3.5 kg of coal tar pitch kg, 2 kg of coal tar, put the above raw materials into the kneading pot and stir, heat for 40 minutes, stir for 10 minutes, then stir once every 10 minutes, stir 3 times in summer, stir 5 times in winter, and finally knead the pot The temperature is controlled at 130°C, and it is poured into an incubator for standby. The production temperature is controlled within the range of 100°C, and it is mechanically pressed and formed by a hydraulic press.

Embodiment 3

[0024] Embodiment Three: Carbon Slag Type Protective Ring

[0025] Take 7.5 kg of aggregate under the sieve of the anode residue with a particle size of 5-10mm, 7.5 kg of the under-sieve of the anode residue with a particle size of 0.3-0.5mm, 10 kg of dust collection powder for the anode residue below 0.3mm, 25 kg of waste carbon residue, and 6.5 kg of coal tar pitch. kg, 3.5 kg of coal tar, put the above raw materials into the kneading pot and stir, heat for 40 minutes, stir for 10 minutes, then stir once every 10 minutes, stir 3 times in summer, stir 5 times in winter, and finally knead the pot The temperature is controlled at 130°C, and it is poured into an incubator for standby. The production temperature is controlled within the range of 100°C, and it is mechanically pressed and formed by a hydraulic press.

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Abstract

The invention relates to a production method of an anode protection ring in the electrolytic aluminum production, which is used for producing an anode steel talon protection ring by taking the waste in the electrolytic aluminum production as main raw material and adding coal pitch and coal tar in the waste. The waste includes: residual anode waste, waste paste, waste carbon residue and waste cathode crushed material, different types of waste can produce different types of anode steel talon protection rings, including conventional type protection rings, waste paste protection rings, carbon residue type protection rings and waste cathode block protection rings, and the proportion of various raw materials for producing the anode steel talon protection rings is that: waste : coal pitch : coal tar is equal to 100 : 7-14 : 3-8. The method uses the waste in the electrolytic aluminum production as most raw materials, not only reduces the pollution of overhaul groove solid waste and other waste in the electrolytic aluminum production to the environment, but also effectively utilizes the waste and reduces the production cost of electrolytic aluminum. The plant use proves that the anode steel talon protection rings produced by the method can completely satisfy production requirements.

Description

technical field [0001] The invention relates to a manufacturing method of an anode protection ring used for protecting anode steel claws in the process of aluminum smelting. Background technique [0002] In recent years, with the expansion of the application range of aluminum, the requirements for aluminum quality at home and abroad are getting higher and higher. In order to improve the quality of primary aluminum and prevent steel claws from being corroded by electrolyte, in the absence of other measures, it is necessary to take measures to reduce the electrolyte level as a guarantee. As the electrolyte level is highly reduced, it affects the dissolution rate and amount of alumina, which ultimately leads to a decrease in current efficiency. To increase the electrolyte level, this needs to solve the problem of anode steel claw protection. Production practice has proved that the electrolytic cell using the anode protection ring can increase the electrolyte level by 2cm, and...

Claims

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Application Information

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IPC IPC(8): C25C3/12
Inventor 王洪永韩洪流豆兴敏董胜强李志锋赵永远田思辰魏新民王彬杨志刚
Owner 河南神火铝业股份有限公司
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