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Formula and method for preparing anode steel talon protection ring

A technology for anode steel claw and protection ring, which is applied to the formulation and preparation field of anode steel claw protection ring, can solve the problems of rising energy consumption of electrolysis production, loss of protection of anode steel claw, affecting the life of an electrolytic cell, etc., so as to reduce the cost of raw materials , The effect of reducing the sintering temperature and improving the fire resistance

Active Publication Date: 2013-03-06
HUNAN CHUANGYUAN NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most of the anode steel claw protection rings are made of carbon materials as raw materials, with asphalt as the binder, and are formed by pressure machinery, which has poor oxidation resistance, low compressive strength, and high manufacturing costs.
The carbon protection ring is easily oxidized in the high temperature environment of the electrolytic cell. After the carbon protective ring is oxidized and damaged, on the one hand, the anode steel claw loses its protection, resulting in the phenomenon of "claw melting"; on the other hand, the oxidized carbon slag falls into the electrolytic cell In the middle, the resistance of the cell increases, the energy consumption of electrolytic production increases, and in severe cases, it even affects the life of the electrolytic cell

Method used

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  • Formula and method for preparing anode steel talon protection ring
  • Formula and method for preparing anode steel talon protection ring
  • Formula and method for preparing anode steel talon protection ring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Recipe for preparing anode steel claw guard rings:

[0029]

[0030] The preparation method is as follows:

[0031] (1) Ball milling: Grind the aluminum ash in a ball mill for 1-2 hours, sieve the aluminum ash after grinding, and weigh 9kg of aluminum ash below 30 mesh;

[0032] (2) Mixing: add an appropriate amount of water to the binder in Example 1, stir evenly, and mix and stir with the sieved aluminum ash for 0.5 hour to make a slurry;

[0033] (3) Degassing: let the slurry stand for 1-2 hours, until no air bubbles are discharged, add the sintering aid described in Example 1, and stir evenly. After testing, the solid content of the slurry is 60%, and the viscosity is 960Pa·s;

[0034] (4) Forming: inject the slurry into the mold of the anode protection ring, pressurize at 10-15MPa, and keep for 10-30 seconds to obtain the raw material of the anode steel claw protection ring;

[0035] (5) Drying: After demoulding, dry the green body in an oven at 105°C for 2 h...

Embodiment 2

[0038] Recipe for preparing anode steel claw guard rings:

[0039]

[0040] The preparation method is as follows:

[0041] (1) Ball milling: Grind the aluminum ash in a ball mill for 1-2 hours, sieve the aluminum ash after grinding, and weigh 8kg of aluminum ash below 100 mesh;

[0042] (2) Mixing: add an appropriate amount of water to the binder in Example 2, stir evenly, and mix and stir with the sieved aluminum ash for 0.5 hour to make a slurry;

[0043] (3) Degassing: let the slurry stand for 1-2 hours, until no air bubbles are discharged, add the sintering aid described in Example 2, and stir evenly. After testing, the solid content of the slurry is 61%, and the viscosity is 950Pa·s;

[0044] (4) Forming: inject the slurry into the mold of the anode protection ring, pressurize at 12-15MPa, and keep for 20-30 seconds to obtain the raw material of the anode steel claw protection ring;

[0045] (5) Drying: After demoulding, dry the green body in an oven at 100°C for 1....

Embodiment 3

[0048] Recipe for preparing anode steel claw guard rings:

[0049]

[0050] The preparation method is as follows:

[0051] (1) Ball milling: Grind the aluminum ash in a ball mill for 1-2 hours, sieve the aluminum ash after grinding, and weigh 9.2kg of aluminum ash below 120 mesh;

[0052] (2) Mixing: Add an appropriate amount of water to the binder in Example 3, stir evenly, mix and stir with the sieved aluminum ash for 0.5 hour, and make a slurry;

[0053] (3) Degassing: let the slurry stand for 1-2 hours, until no air bubbles are discharged, add the sintering aid described in Example 3, and stir evenly. After testing, the solid content of the slurry is 72%, and the viscosity is 940Pa·s;

[0054] (4) Forming: inject the slurry into the mold of the anode protection ring, pressurize at 10-13MPa, and keep for 20-30 seconds to obtain the raw material of the anode steel claw protection ring;

[0055] (5) Drying: After demoulding, dry the green body in an oven at 85°C for 2 h...

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Abstract

The invention discloses a formula and method for preparing an anode steel talon protection ring. The formula comprises the following components in percentage by weight: 80-90% of aluminum ash, 1-10% of bonding agent and 1-10% of sintering assistant, wherein the bonding agent is a composition of pseudo-boehmite and an organic bonding agent, and the sintering assistant is a mixture of MgO, TiO2 and MnO2. The formula and the method have the advantages that the volume density of the anode steel talon protection ring can be increased, so that the prepared anode steel talon protection ring has better oxidation resistance and higher compressive strength.

Description

technical field [0001] The invention relates to an anode production process for aluminum electrolysis, in particular to a formula and a preparation method for preparing an anode steel claw protection ring. Background technique [0002] In the aluminum electrolysis industry, the anode is one of the main raw materials for aluminum electrolysis. It acts as a conductor to introduce direct current into the electrolytic cell and participates in the anode reaction as the anode material of the electrolytic cell. During operation, the current of the carbon anode is provided by the anode guide rod after being energized, and the anode and the anode guide rod are connected by the anode steel claw, in order to prevent the anode steel claw from being eroded by the electrolyte and affecting the connection between the anode and the anode guide rod , at the connecting part of the anode and the anode guide rod, a protective ring is set. [0003] At present, most of the anode steel claw prote...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10C25C3/12
Inventor 唐剑赵斌南敬叶灵
Owner HUNAN CHUANGYUAN NEW MATERIALS
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