The Relationship between Specific Electrical Resistance and the Readiness of Coal Coke

Vladyslava Vladymyrenko; Igor Shulga

doi:10.4028/p-q3tyYx

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HomeMaterials Science ForumMaterials Science Forum Vol. 1096The Relationship between Specific Electrical...

The Relationship between Specific Electrical Resistance and the Readiness of Coal Coke

Abstract:

The readiness of coal coke is a necessary condition for ensuring its high quality, which ultimately depends on the degree of orderliness of the macromolecular structure in the form of graphite-like blocks. Coke then acquires semiconductor properties. According to the zone theory of solid-state physics, the dependence of the specific electrical resistance of coke on the final coking temperature has an exponential form. The pre-exponential factor characterizes the properties of the original coal, including its caking ability, the content of mineral impurities, and their ability to form free current carriers (electrons or holes). The coefficient in the exponent indicates the rate of decrease of the logarithm of resistance with increasing temperature. These two quantities can be determined experimentally. For each blend composition, they determine the final coking temperature required to form the appropriate coke readiness, taking into account its intended use.

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Periodical:

Materials Science Forum (Volume 1096)

Pages:

103-108

DOI:

https://doi.org/10.4028/p-q3tyYx

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Online since:

August 2023

Authors:

Vladyslava Vladymyrenko*, Igor Shulga

Keywords:

Coal Coke, Coke Readiness, Final Coking Temperature, Specific Electrical Resistance

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