▎ 摘　　要

NOVELTY - Ultra-high power graphite electrode comprises 0.3-0.7 wt.% graphene, 65-73 wt.% needle coke, 21-28 wt.% binder, 2-5 wt.% calcined crushed, and 3-7.5 wt.% crushed graphite. USE - Ultra-high power graphite electrode. ADVANTAGE - The ultra-high power graphite electrode increase the graphitization degree of the product, reduce the resistivity of the product, and improve the flexural strength of the product. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for method for manufacturing an ultra-high power graphite electrode, which comprises: (A) calcinating raw acicular coke, crushing, and sieving into granules and powders of various size acicular coke; and weighing the particles and powders of graphene, graphite crushed, roasted crushed, binder, and various granular needle cokes; (B) mixing graphene with the granular materials and powders of each grade of needle-shaped coke, then adding graphite crushing and roasting crushing, and mixing to form a mixed material; and (C) stirring the mixture and the binder in a kneading pot to form a plastic paste; (D) sending the plastic paste to a vertical tamping press, then the plastic paste is charged and pre-pressed for 2-5 minutes, and the paste is extruded from the extrusion nozzle at a speed of 25-26 mm / sec under a pressure of 32-35MN, and when the electrode reaches the required length, the electrode is cut to obtain a green body of a preset size; (E) roasting under the protection of the filler, and firing the green body to obtain a fired body; (F) cleaning the surface of the calcined billet, preheating it to 260-380 degrees C, putting it into the impregnation device, evacuating to 8-9KPa, and then injecting the impregnation at 180-200 degrees C, the system is pressurized to 1.2-1.5 MPa, and returning to the asphalt and cooling the system; and subjecting the impregnated blank to a second firing in the aforementioned roasting furnace, so that the impregnated asphalt excludes volatiles and cokes; (G) putting the calcined billet after secondary firing in an internal heating tandem furnace, and heating the impregnated calcined billet to 2300-3000 degrees C according to a preset power curve in the presence of a protective medium, and a graphitized billet is obtained; and (H) processing the graphitized billet into a required electrode body and / or electrode joint through numerical control processing.