Cross-connection electrode for internal thermal serial graphitization furnace and production method thereof

Abstract

The invention provides a cross-connection electrode for an internal thermal serial graphitization furnace and a production method thereof. The cross-connection electrode is prepared from a dry material composed of large-grained petroleum based needle coke, medium-grained petroleum based needle coke and small-grained powder, a binding agent, additives, green ground components and roasted ground components through crushing, screening, mixing, kneading, shaping, roasting, dipping, graphitizing, processing and assembling, wherein the formula is as follows: the percentage of the large-grained petroleum based needle coke is 30-40%, the percentage of medium-grained petroleum based needle coke is 20-30%, the percentage of small-grained powder is 35-45%, the content of the binding agent is 25-30% of the total weight of the dry material, the content of the additive stearic acid is 0.5-0.8% of the total weight of the dry material, the content of the additive Fe2O3 is 0-1% of the total weight of the dry material, the content of the green ground components is 10-20% of the total weight of the dry material and the content of the roasted ground components is 0-10% of the total weight of the dry material; the binding agent is modified asphalt, and the grain size of the large-grained petroleum based needle coke is 15-25mm, the grain size of the medium-grained petroleum based needle coke is 5-15mm and the small-grained powder is 200-mesh powder.

Description

technical field [0001] The invention belongs to the production field of jumper electrodes, and in particular relates to a jumper electrode for an internal thermal series graphitization furnace and a production method thereof. Background technique [0002] Artificial graphite products used as conductive electrodes in electric arc furnaces are transformed from amorphous carbon to graphite lattice at high temperature to become good conductive materials. This process is called graphitization. The graphitization methods commonly used in the world mainly include the Acheson method and the Castel method. The graphitization furnaces established based on the above two methods are called the Acheson furnace and the internal series graphitization method (LWG). Because the latter has the advantages of high furnace temperature, low power consumption, and self-heating of products, it is widely used in the world. However, since the jumper electrodes used in LWG furnaces need to withstand ...

AI Technical Summary

Problems solved by technology

[0004] During use, the jumper electrode is damaged due to oxidation, fracture, etc., so a new graphite electrode is required for replacement

Because the imported jumper electrodes are expensive and difficult to purchase, the company has purchased domestic vibration-formed overall square and spliced ​​square jumper electrodes, but the effect is not ideal due to the relatively low index.

Images