A kind of all-graphite electrode and preparation method thereof

Abstract

The invention discloses a complete graphite electrode which consists of the following ingredients in percentage by weight: 25-35% of granular waste graphitized coke (2-35mm), 15-25% of granular waste graphitized coke (0.075-2mm), 18-25% of powdery waste graphitized coke (less than 0.075mm), and 18-25% of coal pitch, wherein the waste graphitized coke is uniformly distributed in a glue stock formed by the coal pitch and the powdery waste graphitized coke. Compared with semi-graphite electrodes and high-graphite electrodes, the complete graphite electrode disclosed by the invention is greatly improved in aspects of indexes and quality, has relatively low resistivity, favorable heat-conducting properties and favorable thermal shock resistance, and can be used for greatly reducing fracture accidents in smelting of a submerged arc furnace, improving the production efficiency of users and lowering the production cost of users.

Description

technical field [0001] The invention belongs to the technical field of carbon electrodes, and relates to an all-graphite electrode and a preparation method thereof, in particular to an all-graphite electrode produced from waste graphite materials and a preparation method thereof. Background technique [0002] Waste graphitized coke is an auxiliary material in the graphitization production process, mainly used as thermal insulation material and resistance material in the graphitization production process. In China, the output of waste graphitized coke is very high, but its use is very small, except for a small part In addition to being able to be used as a carbon increaser, most of the waste graphitized coke is in an idle state, which not only takes up the company's funds, but also has a huge waste of resources. [0003] Domestic enterprises that produce carbon electrodes use some graphitized bulk materials and some carbonaceous materials for production. The electrodes produc...

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Problems solved by technology

[0002] Waste graphitized coke is an auxiliary material in the graphitization production process, mainly used as thermal insulation material and resistance material in the graphitization production process. In China, the output of waste graphitized coke is very high, but its use is very small, except for a small part In addition to being able to be used as a carbon increaser, most of the waste graphitized coke is in an idle state, which not only takes up the company's funds, but also has a huge waste of resources

[0003] Domestic enterprises that produce carbon electrodes use some graphitized bulk materials and some carbonaceous materials for production. The electrodes produced are high-graphite electrodes or semi-graphite electrodes. Not only the cost remains high, but also the procurement of graphitized block materials is difficult.

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