Industry News

- June 20, 2019

Classification and description of carbon products(1)

1. Carbon and graphite products

Graphite electrodes are mainly made of petroleum coke and needle coke, and coal tar is used as a binder. It is made by calcination, compounding, kneading, pressing, roasting, graphitization and machining. It is in the electric arc furnace. The conductor in the form of an electric arc that releases electric energy to heat and melt the charge, according to its quality index, can be divided into ordinary power, high power and ultra high power. Graphite electrodes include:

(1) Ordinary power graphite electrode. It is allowed to use graphite electrodes with current density lower than 17A/cm2, which are mainly used in ordinary power electric furnaces such as steel making, silicon refining, and yellowing phosphorus.

(2) Anti-oxidation coated graphite electrode. The surface is coated with a graphite electrode with an anti-oxidation protective layer to form a protective layer which is both electrically conductive and resistant to high temperature oxidation, and reduces electrode consumption during steel making.

(3) High power graphite electrode. Graphite electrodes with a current density of 18 to 25 A/cm 2 are allowed, and are mainly used in high-power electric arc furnaces for steel making.

(4) Ultra high power graphite electrode. A graphite electrode with a current density greater than 25 A/cm 2 is allowed. Mainly used in ultra-high power steelmaking electric arc furnaces.

2.Graphite anodes

It mainly uses petroleum coke as raw material, coal asphalt as binder, and is prepared by calcination, compounding, kneading, pressing, roasting, impregnation, graphitization and machining. It is generally used as a conductive anode for electrolysis equipment in the electrochemical industry. include:

(1) Various anode plates for chemical industry.

(2) Various anode rods.

3.Special graphite

Mainly based on high-quality petroleum coke, coal tar pitch or synthetic resin as binder, raw material preparation, compounding, kneading, tableting, pulverizing, kneading, forming, multiple firing, multiple infiltration, purification and graphitization, Made by machining. Generally used in the aerospace, electronics, nuclear industry sectors.

It includes spectrally pure graphite, high purity, high strength, high density and pyrolytic graphite.