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Method for external heat preservation, energy conservation and consumption reduction of furnace bottom of aluminium electrolysis cell

An aluminum electrolytic cell and the technology of the electrolytic cell are applied in the field of external heat preservation and energy saving and consumption reduction of the furnace bottom of the aluminum electrolytic cell to achieve the effect of saving the cost of thermal insulation materials

Pending Publication Date: 2022-01-04
JIUQUAN IRON & STEEL GRP
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of external heat preservation and energy saving of the bottom of the electrolytic cell in the prior art, and to provide a method for external heat preservation and energy saving of the bottom of the aluminum electrolytic cell

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  • Method for external heat preservation, energy conservation and consumption reduction of furnace bottom of aluminium electrolysis cell
  • Method for external heat preservation, energy conservation and consumption reduction of furnace bottom of aluminium electrolysis cell
  • Method for external heat preservation, energy conservation and consumption reduction of furnace bottom of aluminium electrolysis cell

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Embodiment Construction

[0028] In the existing equipment, the bottom of the aluminum electrolytic cell is provided with a bottom I-beam 1, and the aluminum electrolytic cell is provided with a cathode carbon block group 3, a cathode lining refractory insulation layer 4 and a cathode steel rod 7. The innovation of the present invention is to provide a A method for external heat preservation and energy saving and consumption reduction of an aluminum electrolytic cell furnace bottom, comprising the following steps:

[0029] S1. Add a thermal insulation material layer 2 outside the bottom of the electrolytic cell, and the thermal insulation material layer 2 is a calcium silicate board or a ceramic fiber board;

[0030] S2. The thickness of the furnace side of the electrolytic cell is 10~20cm, the length of the extension leg (excluding the artificial extension leg) is 5~18cm, and the voltage drop of the bottom of the aluminum electrolytic cell is 180~390mV;

[0031] S3. A temperature measuring probe is in...

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Abstract

The invention relates to the technical field of aluminium electrolysis industry technical equipment and energy conservation and consumption reduction, in particular to a method for external heat preservation, energy conservation and consumption reduction of a furnace bottom of an aluminium electrolysis cell. A thermal insulation material of the invention is added outside the bottom of a bottomed electrolysis cell which is designed, mounted and produced in the prior art, and helps to solve the problem that the furnace bottom becomes cold in the processes of forming and maintaining the thickness of a furnace wall and the length of an extension leg of the electrolysis cell and saving energy and reducing voltage according to needs, so that an electrolyte primary crystal temperature isotherm can be continuously maintained below a cathode carbon block; the stable and optimized operation of the electrolysis production process is realized; the cell voltage is properly reduced; and energy conservation and consumption reduction are further realized.

Description

technical field [0001] The invention relates to the technical field of technical equipment and energy saving and consumption reduction in the aluminum electrolysis industry, in particular to a method for external heat preservation and energy saving and consumption reduction of the furnace bottom of an aluminum electrolysis cell. Background technique [0002] The energy utilization rate of aluminum electrolysis cells in the production process is about 50%, such as figure 1 As shown, about half of the energy is dissipated in the atmosphere in the form of heat, which not only causes a lot of energy waste, but also causes the ambient temperature around the electrolytic cell to rise, which affects the thermal balance of the electrolytic cell and also causes the high temperature operation of aluminum electrolysis. One of the important heat sources of aluminum electrolysis, energy saving and emission reduction is still the core key technology research and development field of alumi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C3/08C25C3/10C25C3/20
CPCC25C3/085C25C3/08C25C3/10C25C3/20
Inventor 成庚刘海锋刘进县杨成亮杨国伟金占雄张鸿翎魏福吉刘俊英郭文善陈正喜李振中宁军董继强段中波周轩逸
Owner JIUQUAN IRON & STEEL GRP
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