Method and equipment for improving performance of graphite electrode materials

Abstract

The invention discloses a method for improving the performance of graphite electrode materials, which includes: carrying the graphite electrode materials to be treated by carrying gas through arc plasma, cooling, filtering and collecting the treated graphite electrode materials. The method utilizes the arc plasma to reduce the higher volatile content in the graphite electrode materials, increasesthe specific surface area and degree of graphitization, and optimizes the product performance. The invention also discloses equipment using the method, comprising a reaction chamber, a cooling chamberand a filter connected in sequence, an arc plasma generator is arranged in the reaction chamber, circulating condensed water is arranged in the cooling chamber, and the filter is applied to collect the processed graphite electrode materials. The components applied in the equipment are easy to obtain, simple to assemble and easy to operate, and the efficient separation and collection of the graphite electrode materials can be realized.

Description

technical field [0001] The invention relates to the field of material technology, in particular to a method and equipment for improving the performance of graphite electrode materials. Background technique [0002] Graphite electrode materials are mainly used in steelmaking electric arc furnaces, lithium batteries and other fields, and generally have the following characteristics: [0003] (1) High temperature resistance: As the temperature increases, the strength increases; [0004] (2) Good stability: adapt to extremely cold and extremely hot conditions, and will not produce cracks; [0005] (3) Special thermal conductivity: in a specific temperature range, usually 800-1300°C, the thermal conductivity decreases; [0006] (4) Good chemical stability: strong resistance to salt corrosion at high temperature. [0007] Graphite electrode is a kind of high-temperature-resistant graphite made of petroleum coke and needle coke as raw materials, coal tar pitch as a binder, and t...

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Problems solved by technology

[0005] (3) Special thermal conductivity: in a specific temperature range, usually 800-1300°C, the thermal conductivity decreases;

[0009] (1) Long production cycle: the production cycle of ordinary power graphite electrode materials is about 40 days, the production cycle of ultra-high power graphite electrode materials is about 70 days, and the production cycle required for special function graphite electrode materials is longer;

[0010] (2) High energy consumption: the electricity cost of one ton of ordinary power graphite electrode material is about 6000kW h, consumes thousands of cubic meters of gas or natural gas, and about 1 ton of metallurgical coke powder;

[0011] (3) The production process is complex: there are many processes, and special mechanical equipment and kilns are required;

[0012] (4) Pollution generated during the production process: mainly dust and harmful gases, which need to be equipped with complete ventilation, dust reduction and harmful gas treatment facilities;

[0013] (5) The source of raw materials is unstable: petroleum coke and coal tar pitch are mainly by-products of oil refining enterprises and coal chemical enterprises, and their composition stability and quality assurance are not high;

[0014] (6) The volatile matter content in the product is relatively high: 6-8% volatile matter content still has adverse effects on the strength and electrical conductivity of graphite electrode materials.

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