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Method for increasing temperature of aluminum electrolysis pre-baked green anode dry material

A raw anode and aluminum electrolysis technology is applied in the field of material temperature increase in the production process of prebaked anodes for aluminum electrolysis, which can solve the problems of poor wettability of material particles and affect the quality of material kneading, etc. Increase the effect of the heating function

Inactive Publication Date: 2009-09-09
YUNNAN ALUMINUM
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Problems solved by technology

During the kneading process, the temperature of the material plays a decisive role in the kneading quality: low material temperature leads to low kneading temperature (poor kneading conditions), the viscosity of the asphalt will become higher, the wettability of the material particles is poor, and the asphalt cannot penetrate the material. Inside the particle, which affects the kneading quality of the material

Method used

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  • Method for increasing temperature of aluminum electrolysis pre-baked green anode dry material
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  • Method for increasing temperature of aluminum electrolysis pre-baked green anode dry material

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Embodiment Construction

[0019] Such as figure 1 As shown, the paste making process of the prebaked anode for aluminum electrolysis of the present invention is: steam preheating → batching bin → batching → secondary preheating of dry materials + liquid pitch → paste mixing.

[0020] The dry material preheating is to make a steam heating device in the heating device, which is composed of several layers of U-shaped heating coils (in order to ensure the heat exchange efficiency, the size and layer spacing of the U-shaped coils should be reasonably controlled). The device is fixed inside the batching bin with a bracket of sufficient strength, and the coil is fixed on the bracket by pressing. The steam enters from the inlet of the heat exchanger and passes through the heat exchange device, so that the pipes gain heat under the action of forced convection and conduction of the steam. During the process of the material moving down slowly in the silo, part of the material contacts with the high-temperature t...

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Abstract

The invention discloses a method for increasing temperature of an aluminum electrolysis pre-baked green anode dry material. And the invention is characterized in that the technique procedure for producing pre-baked green anode paste used for aluminum electrolysis is as follows: steam pre-heating->mixing tank->mixing->dry material pre-heating plus liquid asphalt->paste mixing. For the dry material pre-heating, high temperature steam is taken as a heat source, the lower part of each mixing tank is provided with a heating device to carry out pre-heating on the material in each mixing tank, and the temperature of the material is obviously increased after the material passes the heating device, thus satisfying the technique requirement. After the material is treated by secondary heating by a pre-heating spiral, the temperature of the material is obviously increased by 15-20 DEG C compared with the conditions of the prior art. The invention improves the flow condition of the material in the mixing tank and eliminates the aliquation phenomenon of the material granularity in the past. The invention needs small investment, has high thermal efficiency conversion and the waste products can be recycled.

Description

technical field [0001] The invention relates to the technical field of production of prebaked anodes for aluminum electrolysis, in particular to a method for increasing the temperature of materials during the production process of prebaked anodes for aluminum electrolysis. technical background [0002] In recent years, the domestic electrolytic aluminum industry has developed rapidly, the production scale has continued to increase, the technical level has been greatly improved, the current efficiency has been improved and the power consumption has been significantly reduced. However, there is still a big gap compared with the advanced level of foreign countries, especially in terms of power consumption. The domestic average AC power consumption per ton of aluminum is 14,600kwh / t, which is far higher than that of foreign countries; as far as the current overall production status of electrolytic aluminum in my country is concerned In other words, the comprehensive utilization e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C3/12
Inventor 万多稳阳可斌赵多权刘志祥杨光德李培泽
Owner YUNNAN ALUMINUM
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