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Phi 800mm general power graphite electrode and production method thereof

A graphite electrode and power technology, applied in the direction of discharge heating, electric heating devices, electrical components, etc., can solve the problems of high accidental breakage and high consumption, and achieve the effect of improving product quality level, high product yield, and reducing consumption consumption.

Active Publication Date: 2011-08-17
FANGDA CARBON NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the disadvantages and shortcomings of high product consumption and accidental breakage in the production of super-large graphite electrodes by vibration forming, and provide a common power graphite electrode with a diameter of φ800mm. The present invention also provides the common power graphite electrode production method

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  • Phi 800mm general power graphite electrode and production method thereof
  • Phi 800mm general power graphite electrode and production method thereof

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Experimental program
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Effect test

Embodiment 1

[0034] A production method of ordinary power graphite electrode with a diameter of φ800mm, including the following steps:

[0035] (1) Preparation of dry material: Pour 461Kg delayed petroleum coke large particles with a particle size of 20mm, 1077Kg delayed petroleum coke medium particles with a particle size of 12mm, 1385Kg delayed petroleum coke powder with a particle size of 0.075mm, and 154Kg 4mm graphite powder into the automatic The batching system produces 3077 Kg of dry material;

[0036] (2) Mixing and kneading: After preheating the dry material to 80℃, enter into the mixing pot and stir evenly, add 25Kg iron oxide powder and 9Kg stearic acid as additives, add 923Kg of medium temperature coal pitch as a binder at 160℃, and perform wet mixing , Get the paste 4034 Kg;

[0037] (3) Pressing: the mixed paste is fed into the cold pot for cooling, cooled to 110°C and discharged into a 40MN extruder, and extruded under the conditions of a material chamber temperature of 110°C and...

Embodiment 2

[0044] A production method of ordinary power graphite electrode with a diameter of φ800mm, including the following steps:

[0045] (1) Preparation of dry materials: 308Kg delayed petroleum coke large particles with a particle size of 12mm, 1077Kg delayed petroleum coke with a particle size of 0.075mm; delayed petroleum coke powder with a particle size of 0.002mm 1538Kg; 0.5mm graphite powder 154Kg, Pour into the automatic batching system to make 3076 Kg of dry material;

[0046] (2) Kneading: After preheating the dry material, enter the kneading pot and stir evenly, add 25Kg iron oxide powder and 9Kg stearic acid as additives, and add medium-temperature modified coal tar pitch accounting for 30% of the total weight of the dry material at a temperature of 160℃ 923Kg; Wet mixing to obtain 4033 Kg of paste;

[0047] (3) Pressing: the mixed paste is fed into the cold material pot for cooling, cooled to 120°C and discharged into a 40MN extruder, extruded under the conditions of a chamber...

Embodiment 3

[0055] A production method of ordinary power graphite electrode with a diameter of φ800mm, including the following steps:

[0056] (1) Preparation of dry material: the delayed petroleum coke large particles with a particle size of 20mm 150Kg, the delayed petroleum coke medium particles with a particle size of 12mm, 300Kg, and a delayed petroleum coke powder with a particle size of 0.075mm 500Kg, 4mm graphite Powder 50Kg, pour into automatic batching system to make dry material 1000 Kg;

[0057] (2) Kneading: preheat the dry material to 80°C, then enter the kneading pot and stir evenly, add 8Kg of iron oxide powder and 3Kg of stearic acid; 200 Kg, wet mixing to obtain 1511Kg of paste;

[0058] (3) Pressing: The mixed paste is fed into the cold pot for cooling, cooled to 110°C and discharged into a 40MN extruder, and extruded under the conditions of a set chamber temperature of 110°C and a mouth temperature of 150°C Extrusion produced a pressed product with an extrusion pressure of 5...

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Abstract

The invention provides a phi 800mm general power graphite electrode and a production method thereof. The method comprises the following steps of: preparing dry materials by using large delay petroleum coke particles, middle delay petroleum coke particles, delay petroleum coke powder materials and graphite powder; after pre-heating the dry materials, putting into a kneading boiler, adding ferric oxide powder and stearic acid which serve as additives in the kneading boiler, adding middle-temperature modified coal pitch serving as adhesives and wetly mixing to prepare paste materials; and putting the paste materials into a material cooling boiler and cooling, extruding, roasting and graphitizing to produce the phi 800mm general power graphite electrode. According to the method, the ideal extrusion molding manner of the graphite electrode is adopted, and novel technique formula, technology and mature production equipment are used to produce the general power graphite electrode capable of replacing the original carbon electrodes and vibration molding electrodes; moreover, the smelting input power is improved and the smelting energy consumption is reduced. Both the quality index and theuse performance of the produced products reach the national standards; the use consumption of the phi 800mm general power graphite electrode is reduced; and the economic benefit is improved.

Description

Technical field [0001] The invention belongs to the technical field of graphite electrode preparation, especially a φ800mm ordinary power graphite electrode. The invention also includes a production method of the graphite electrode. Background technique [0002] Graphite electrodes are important conductive materials for electric arc furnace steelmaking and submersible arc furnaces for smelting yellow phosphorus, industrial silicon, zinc, etc. Originally, conductive electrodes used in submersible arc furnaces were divided into several categories: electrode paste, carbon electrodes, graphite electrodes, etc. In recent years, due to the Thermal furnaces are gradually becoming larger and the input power is gradually increasing, which puts forward higher requirements for the quality of conductive electrodes. In large-scale submerged arc furnaces, low-end products such as electrode pastes are gradually being eliminated. Graphite electrodes are relatively popular due to their excell...

Claims

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Application Information

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IPC IPC(8): H05B7/06H05B7/085C04B35/52C04B35/622
Inventor 黄涛祁松义郝鹏郝勇梁东曹君虎
Owner FANGDA CARBON NEW MATERIAL CO LTD
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