Cheap PriceList for Synthetic Graphite Powder - The Standard of Selecting Coke – Yunai


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The quality of petroleum coke largely depends on the nature of the raw material and its processing conditions. The main quality indicators are:

Purity
Refers to the content of sulfur and ash in petroleum coke. High-sulfur coke will cause the product to swell during graphitization, resulting in cracks in the carbon product. High ash content will hinder the crystallization of the structure and affect the performance of carbon products.

Crystallinity
Refers to the structure of the coke and the size of the mesophase spheres. The coke formed by small spheres has a porous structure such as sponge-like, and the coke formed by large spheres has a dense structure such as fibrous or needle-like, and its quality is superior to that of sponge coke. In the quality index, true density roughly represents this performance, and high true density indicates good crystallinity.

Thermal shock resistance
Refers to the crack resistance of coke products when they are subjected to thermal shocks suddenly rising to high temperatures or rapidly cooled from high temperatures. The products of needle coke have good thermal shock resistance, so they have high use value. The coefficient of thermal expansion represents this property. The lower the coefficient of thermal expansion, the better the thermal shock resistance.

Graininess
The relative content of powdered coke and massive granular coke (usable coke) contained in the reaction coke. Most of the powder coke is broken by mechanical action such as extrusion friction in the process of decoking, storage and transportation, so its amount is also a manifestation of mechanical strength. The green coke can be prevented from being broken after being calcined to mature coke. The coke with more granular coke and less powder coke has higher use value.

Carbon Sulfur Ash V.M. Moisture Size
All graphite ≥99 ≤0.05 ≤0.5 ≤0.7 ≤0.5 1mm-3mm
98.5 1mm-5mm
98 2mm-6mm
Semi-graphite 98—98.5 0.3-0.7 0.7 0.8 ≤0.5 1mm-3mm
1mm-5mm
2mm-5mm
Calcined coke ≥98.5 0.1 0.5 0.5 ≤0.5 1mm-5mm
3mm-8mm
8mm-25mm

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Cheap PriceList for Synthetic Graphite Powder - The Standard of Selecting Coke – Yunai detail pictures

Cheap PriceList for Synthetic Graphite Powder - The Standard of Selecting Coke – Yunai detail pictures

Cheap PriceList for Synthetic Graphite Powder - The Standard of Selecting Coke – Yunai detail pictures

Cheap PriceList for Synthetic Graphite Powder - The Standard of Selecting Coke – Yunai detail pictures


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  • Managers are visionary, they have the idea of mutual benefits, continuous improvement and innovation, we have a pleasant conversation and Cooperation.
    5 Stars By Lindsay from Bahrain - 2017.07.28 15:46
    The supplier abide the theory of quality the basic, trust the first and management the advanced so that they can ensure a reliable product quality and stable customers.
    5 Stars By Mario from Niger - 2018.09.21 11:44
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