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Jiangsu jinzhaochuan carbon products co. LTD

Guanji mineral products of Lianyungang

Contact: General Wu

Contact number:

Fifteen billion fifty million nine hundred and sixteen thousand seven hundred and eighty-nine

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0518-87808797

Website:en.gjmetals.com

Address: No..11, Quyang East Industrial Park, Donghai County, Lianyungang City, Jiangsu Province


Main uses of graphite fossil oil coke

2019-10-08
times

石墨化石油焦


The main uses of petroleum coke are pre-baked anode and anode paste used in electrolytic aluminum, carbonization agent in carbon industry, graphite electrode, smelting industrial silicon and fuel, etc. 

According to the structure and appearance of petroleum coke, petroleum coke products can be divided into needle coke, sponge coke, pellet coke and powder coke. 

1. Needle coke, with obvious needle structure and fiber texture, is mainly used as high power and ultra high power graphite electrode in steelmaking. 

Because needle coke has strict quality index requirements in sulfur content, ash content, volatile content and true density, so there are special requirements for the production process and raw materials of needle coke. 

2. Sponge coke, high chemical reactivity and low impurity content, mainly used in aluminum industry and carbon industry. 

3. Pellet coke or spherical coke: the shape is spherical, the diameter is 0.630mm, generally produced by high sulfur, high asphalt residue, can only be used as power generation, cement and other industrial fuel. 

4. Powder coke: produced by fluidization coking process, its particles are fine (diameter 0.1-0.4mm), high volatile and high thermal expansion coefficient, so it can not be directly used in electrode preparation and carbon industry. 

According to the difference of sulfur content, it can be divided into high sulfur coke (sulfur content more than 3%) and low sulfur coke (sulfur content less than 3%). 

Low sulfur coke can be used as anodic paste and prebaked anode for aluminum plant and graphite electrode for iron and steel plant. 

Among them, high quality low sulfur coke (sulfur content less than 0.5%) can be used to produce graphite electrode and carbonization agent. 

General quality low sulfur coke (sulfur content less than 1.5%) is often used in the production of prebaked anodes. 

Low quality petroleum coke is mainly used in smelting industrial silicon and producing anode paste. 

High sulfur coke is generally used as fuel for cement plants and power plants. 

In order to meet the requirements of petroleum coke (coke), the raw coke must be calcined in order to meet the requirements of graphite electrode for steelmaking or anode paste (melting electrode) for aluminum and magnesium. 

The calcination temperature is generally about 1300 ℃. The purpose is to remove the volatile components of petroleum coke as far as possible. 

In this way, the hydrogen content of petroleum coke can be reduced, the graphitization degree of oil coke can be improved, the high temperature strength and heat resistance of graphite electrode can be improved, and the electrical conductivity of graphite electrode can be improved. 

Calcined coke is mainly used in the production of graphite electrode, carbon paste products, diamond sand, food grade phosphorus industry, metallurgical industry and calcium carbide, among which graphite electrode is the most widely used. 

The coke can be directly used as calcium carbide as calcium carbide main material and silicon carbide and boron carbide as grinding materials without calcination. 

It can also be directly used as coke for blast furnace in metallurgical industry or carbon brick for blast furnace wall, and it can also be used as dense coke for casting process. 

Graphitized petroleum coke manufacturer-Lianyungang Guanji Mineral products Co., Ltd. welcome your call.

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