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Method for mixing electrolytic aluminum waste cathode particles and coke particles for electrolytic cell roasting

A waste cathode and electrolytic cell technology, which is applied in the field of treatment and utilization of waste cathode carbon blocks of electrolytic aluminum, can solve the problems of occupying large land, ecological environment pollution, hidden dangers, etc. Effect

Inactive Publication Date: 2020-02-04
YUNNAN RUNXIN ALUMINUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most electrolytic aluminum enterprises mainly use landfill or storage to dispose of waste cathode carbon blocks, which not only requires a large amount of land, invests a lot of operating funds and management costs, but also has hidden dangers of pollution to the ecological environment in the long run

Method used

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  • Method for mixing electrolytic aluminum waste cathode particles and coke particles for electrolytic cell roasting
  • Method for mixing electrolytic aluminum waste cathode particles and coke particles for electrolytic cell roasting

Examples

Experimental program
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Embodiment 1

[0018] A method of mixing electrolytic aluminum waste cathode particles and coke particles for electrolytic cell roasting. This method forms a heating medium by mixing aluminum electrolysis waste cathode particles with coke particles, laying them between the anode carbon block and cathode carbon block of the electrolytic cell, and then electrifying Roasting, forming a new method of starting the heating medium for aluminum electrolytic cell firing. The specific method steps are as follows:

[0019] A. Sorting the slag from the overhaul of the electrolytic cell, selecting qualified waste cathode carbon blocks and cleaning the surface, crushing and screening the cleaned waste cathode carbon blocks, and selecting particles with a particle size of 2-5mm. The screened spent cathode particles and coke particles are mixed according to the mass ratio of 1:1, and mixed and stirred at a slow speed by a mixer to obtain a heating medium;

[0020] B. Tanking. In the electrolytic cell, the...

Embodiment 2

[0024] The method for mixing electrolytic aluminum waste cathode particles and coke particles for electrolytic cell roasting, the specific method steps are as follows:

[0025] A. Sorting the slag from the overhaul of the electrolytic cell, selecting the qualified waste cathode carbon blocks and cleaning the surface, crushing and screening the waste cathode carbon blocks, selecting waste cathode particles with a particle size of 2-5mm, and screening The spent cathode particles and coke particles are mixed according to the mass ratio of 1:2, and mixed and stirred at a slow speed by a mixer to obtain a heating medium;

[0026] B. Install the tank, place the frame 4 horizontally on the surface of the cathode carbon block 3 in the electrolytic cell, then lay the heating medium 2 in the frame, and scrape the heating medium with a level to ensure that the laying thickness is uniform. The thickness of the single groove is uniformly laid, and the laying height of the 300kA groove is 3...

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Abstract

The invention discloses a method for mixing electrolytic aluminum waste cathode particles and coke particles for electrolytic cell roasting. Through mixing the electrolytic aluminum waste cathode particles and the coke particles, a novel electrolytic cell roasting heating medium is formed. According to the method, harmless treatment and comprehensive utilization of the electrolytic cell waste cathode can be realized, the pollution of waste cathode carbon blocks of an electrolytic cell to the environment is eliminated, the production and treatment cost is reduced, and the environmental protection pressure of the enterprise for solid waste treatment is reduced.

Description

technical field [0001] The invention relates to the technical field of treatment and utilization methods of electrolytic aluminum waste cathode carbon blocks. Background technique [0002] The electrolytic cell is the core equipment for the production of electrolytic aluminum. The lower part of the electrolytic cell mainly includes an external steel frame, cathode carbon blocks and insulation materials. The external steel frame plays a role of solidification on the outside. The cathode carbon block and the side carbon block, in daily production, the cathode carbon block is used to directly hold the electrolytic liquid. Due to the penetration and corrosion of the tank lining by the high-temperature electrolyte, the lining structure of the electrolytic cell is deformed and cracked, etc., and the high-temperature aluminum Liquid and liquid electrolyte seep into the cell lining from these deformed and cracked cracks, causing the electrolytic cell to fail to produce normally, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C3/06
CPCC25C3/06
Inventor 杨万章杨军龙杨永赵建波陈本松申太荣奚清泉马炬朋聂涛杨汉宣徐忠堃
Owner YUNNAN RUNXIN ALUMINUM
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