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Bonding of solid additives in cokes from coals: a microscopy study

✍ Scribed by Zhanfen Qian; Harry Marsh; David E. Clarke

Publisher
Elsevier Science
Year
1985
Tongue
English
Weight
790 KB
Volume
64
Category
Article
ISSN
0016-2361

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✦ Synopsis

Cortonwood Silkstone (NCB class 401) and Betteshanger (NCB class 301 a/204) coals were cocarbonized with solid additives such asanthracite, coke breeze, green and calcined petroleum cokes. The resultant carbonization products (cokes) were examined by optical microscopy and SEM was used to investigate polished surfaces etched by chromic acid and fracture surfaces. For both coals only the anthracite and green petroleum coke become bonded to the coal cokes. This probably results from softening and interaction of interfaces of the anthracite and green coke with the fluid coal via a mechanism of hydrogenating solvolysis during the carbonization process. The coke breeze and calcined petroleum cokes were interlocked into the matrix of coal coke.

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