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A kind of mold roasting method of aluminum frame anode

An anode and aluminum frame technology, applied in the field of aluminum electrolysis, can solve problems affecting the firing start-up of the electrolytic cell, uneven anode current distribution, and long time for raising the current of the whole series, so as to achieve a safe and stable roasting process, uniform current distribution, and smooth roasting. low cost effect

Active Publication Date: 2019-11-08
山西万源恒清环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention solves the problems in the existing casting mold roasting technology in the electrolytic tank that the time for raising the full series current is long, the distribution of the anode current is uneven, and the anode sintered body formed at the end of the roasting is easily deformed, which affects the subsequent roasting start-up of the electrolytic tank. , providing a casting mold firing method for an aluminum frame anode

Method used

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  • A kind of mold roasting method of aluminum frame anode

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Effect test

Embodiment 1

[0024] A casting mold baking method for an aluminum frame anode, comprising the following steps:

[0025] a. Lay coke particles 7 on the upper surface of the cathode 8 of the aluminum electrolytic cell;

[0026] b. Lay metal aluminum 6 on the coke grains 7 paved in step a;

[0027] c. Place an aluminum frame anode with a conductor 4 and a carbon material 3 on the metal aluminum 6;

[0028] d. Vertically arrange several anode guide rods 1 around the aluminum frame anode;

[0029] e. The anode of the aluminum frame is energized and roasted until the start-up requirements of the electrolytic cell are met.

[0030] The coke particles 7 are any one or any combination of calcined petroleum coke, pitch coke and graphite in any proportion.

[0031] The shape of the coke particles 7 is granular or powdery or a mixture of granular and powdery.

[0032] The shape of the metal aluminum 6 is plate shape, block shape, granular shape, chip shape or a mixture of any several shapes.

[00...

Embodiment 2

[0035] A casting mold baking method for an aluminum frame anode, comprising the following steps:

[0036] a, paving petroleum coke on the upper surface of the cathode 8 of the aluminum electrolytic cell;

[0037] B, lay aluminum plate on the petroleum coke laid in step a;

[0038] c. Place an aluminum frame anode with a conductor 4 and a carbon material 3 on the aluminum plate;

[0039] d. Vertically set several anode guide rods 1 around the aluminum frame anode; set a shunt block 5 around the aluminum frame anode, the shunt block 5 connects the aluminum frame anode and the aluminum plate, and the shunt block 5 is an aluminum block.

[0040] e. The aluminum frame anode is energized and roasted. After the full current is applied for 24 hours, the shunt block 5 is taken out from the electrolytic cell, and the casting and roasting speed of the aluminum frame anode is accelerated until the start-up requirement of the electrolytic cell is met.

Embodiment 3

[0042] A casting mold baking method for an aluminum frame anode, comprising the following steps:

[0043] a. Lay a mixture of petroleum coke, pitch coke and graphite on the upper surface of the cathode 8 of the aluminum electrolytic cell;

[0044] B, lay aluminum plate on the mixture of petroleum coke, pitch coke, graphite laid in step a;

[0045] c. Place an aluminum frame anode with a conductor 4 and a carbon material 3 on the aluminum plate, and fill the gap between the aluminum plate and the aluminum frame anode with aluminum debris;

[0046] d. Several anode guide rods 1 are vertically arranged around the aluminum frame anode, and a diverter block 5 is also arranged at the bottom end of the anode guide rod 1. The diverter block 5 is connected to the anode guide rod and the aluminum plate, and the diverter block 5 is carbon materials;

[0047] e. The anode of the aluminum frame is energized and roasted. After 36 hours of full current, the shunt block 5 is taken out from ...

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Abstract

The invention relates to the technical field of aluminum electrolysis, and concretely relates to a molding calcination method for an aluminum frame anode. The method comprises the following steps: laying scorched particles on the cathode of an aluminum electrolysis tank; laying metallic aluminum on the scorched particles; placing the aluminum frame anode containing a conductor and a carbon material on the metallic aluminum; and vertically arranging a plurality of anode guide rods surrounding the aluminum frame anode, and electrifying and calcining the aluminum frame anode until the start request of the electrolysis tank is reached. The molding calcination method has the advantages of short process flow, simplicity in operation, safe and stable calcination process, short lift whole series current time, fast calcination speed, uniform current distribution, fast and uniform sintered body rising speed, time and labor saving, energy saving and low molding calcination cost, and also can be used for calcining overhauled electrolysis tanks.

Description

technical field [0001] The invention relates to the technical field of aluminum electrolysis, in particular to a mold roasting method for an aluminum frame anode. Background technique [0002] The continuous anode aluminum electrolytic cell using anode paste needs to undergo anode casting and firing before being put into use. The existing electrolytic cell continuous anode mold roasting technology is divided into two types, one is the casting mold roasting technology outside the electrolytic tank, and the other is the casting mold roasting technology inside the electrolytic tank. Casting and roasting technology outside the electrolytic tank usually uses special equipment and processes to cast and roast the anode outside the electrolytic tank. This technology requires additional investment, the process is long, time-consuming and laborious, especially when the anode size is large, transportation and installation are inconvenient , The roasting quality is not high, and when t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25C3/12
CPCC25C3/12
Inventor 党建平党星培
Owner 山西万源恒清环保科技有限公司
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