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Anode paste and carbon anode made from same

A carbon anode and anode paste technology, which is applied in the field of carbon anode and aluminum electrolytic carbon anode, can solve the problems of loose anode bridging structure, anode density, low strength, uneven distribution of pitch, etc., and achieve low contact resistance and CO2 oxidation resistance The effect of lifting and particle distribution is reasonable

Inactive Publication Date: 2010-12-22
HUNAN CHUANGYUAN ALUMINUM IND
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Problems solved by technology

[0004] It has been reported that in the case of poor wetting of coke particles by asphalt and uneven distribution of asphalt, the bridging structure of the anode after roasting is loose, and the density and strength of the anode are low, so that in the electrolytic production, anode slag, or even Very serious quality problems such as large pieces falling off

Method used

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  • Anode paste and carbon anode made from same
  • Anode paste and carbon anode made from same
  • Anode paste and carbon anode made from same

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Embodiment Construction

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0021] The anode paste of the embodiment of the present invention contains a certain proportion of plasticizer oleic acid, which has stronger plasticity and better internal structure uniformity of the anode green block than ordinary anode paste.

[0022] The chemical formula of oleic acid is C 18 h 34 o 2 , molecular formula: CH 3 (CH 2 ) 7 CH=CH(CH 2 ) 7 COOH, chemical name: cis-9-octadecenoic acid; light yellow transparent oily liquid at room temperature, ...

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Abstract

The invention discloses an anode paste and a carbon anode made from the same. The invention has the technical scheme as follows: the carbon anode paste used in electrolytic aluminum industry comprise oleic acid which is 0.1-1 wt% of the paste, and the anode paste is used in the carbon anode preparation process. The viscosity of liquid asphalt, and the interfacial tension of aggregate and asphalt in the anode paste and the carbon anode are effectively reduced, thereby reducing the wetting angle between asphalt and aggregate and greatly enhancing the plasticity and lubricating property of the anode paste. In addition, the materials adopted in the invention can increase the adhesive strength of the anode, greatly reduce the resistivity, enhance the capability of resisting CO2 oxidation, reduce the anode net consumption and lower the production cost of electrolysis.

Description

technical field [0001] The invention relates to the technical field of aluminum electrolytic carbon anodes, in particular to an anode paste and a carbon anode made thereof. Background technique [0002] As the "heart" of the prebaked electrolytic cell, the carbon anode is required to have good electrical conductivity, strong oxidation resistance, etc. If the quality of the carbon anode is not good, it has a great relationship with the technical and economic indicators such as current efficiency, power consumption, and even product quality in the aluminum electrolysis production process. [0003] Carbon anodes are made of calcined petroleum coke, residual poles, and raw crushed aggregates, and coal tar pitch is used as a binder through kneading, molding, and roasting processes. It has a stable geometric shape and is also called prebaked anodes. carbon block. Therefore, the wettability, fluidity, plasticity, permeability, coking property and other properties of the coal tar ...

Claims

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Application Information

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IPC IPC(8): C25C3/12
Inventor 高小明江林涛肖小兵
Owner HUNAN CHUANGYUAN ALUMINUM IND
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