Large-sized high-power graphite electrode and manufacturing method thereof

Abstract

The invention relates to a large-sized high-power graphite electrode and a manufacturing method thereof. The manufacturing method includes: using calcined petroleum coke and needle coke as the dry materials, crushing and sieving the dry materials to obtain multi-granularity granules and powder, coordinately using graphite scraps and raw graphite scraps, mixing according to a certain proportion to form a mixed material, using high-coking-value medium-temperature improved asphalt as the binder in a mixing and kneading pot, adding stearic acid additives to perform mixing and kneading to obtain a paste material, cooling the paste material in an even-cooling cooling system, extruding in a 41MN extruding machine to obtain a raw product, calcining, graphitizing, and machining to obtain the graphite electrode. The manufacturing method has the advantages that the high-coking-value medium-temperature improved asphalt is used as the binder, the overall system temperature is matched and regulated, a traditional impregnation procedure and a secondary calcination procedure are omitted, the manufactured high-power graphite electrode is even and compact in structure, and the quality index and use performance of the graphite electrode can meet national standards.

Description

technical field [0001] The invention relates to a stone-milled electrode and a manufacturing method thereof, in particular to a large-scale, high-power graphite electrode and a manufacturing method thereof, in particular to a manufacturing method for preparing a φ714mm stone-milled electrode. Background technique [0002] Due to the low strength of vibration-formed graphite electrodes, it cannot meet the needs of large-scale yellow phosphorus furnaces and vanadium-titanium smelting furnaces. In addition, the market has a strong demand for high-quality extruded large-scale graphite electrodes. Therefore, the demand for large-scale graphite electrodes Research came into being. [0003] At present, for extruded graphite electrodes, it is more difficult to manufacture graphite electrodes with larger specifications. After the process of pressing-roasting-impregnation-secondary roasting-graphitization-machining, this process not only has high input costs, but also slow production...

AI Technical Summary

Problems solved by technology

[0002] Due to the low strength of vibration-formed graphite electrodes, it cannot meet the needs of large-scale yellow phosphorus furnaces and vanadium-titanium smelting furnaces. In addition, the market has a strong demand for high-quality extruded large-scale graphite electrodes. Therefore, the demand for large-scale graphite electrodes research emerges

[0003] At present, for extruded graphite electrodes, it is more difficult to manufacture graphite electrodes with larger specifications. After the process of pressing-roasting-impregnation-secondary roasting-graphitization-machining, this process not only has high input costs, but also slow production efficiency

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