Premium
Quantitative characterization of the texture of coke
Author(s) -
Patrick J. W.,
Sims M. J.,
Stacey A. E.
Publication year - 1977
Publication title -
journal of microscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.569
H-Index - 111
eISSN - 1365-2818
pISSN - 0022-2720
DOI - 10.1111/j.1365-2818.1977.tb01122.x
Subject(s) - ultimate tensile strength , coke , porosity , texture (cosmology) , materials science , composite material , characterization (materials science) , compression (physics) , analyser , mineralogy , metallurgy , chemistry , chromatography , image (mathematics) , artificial intelligence , computer science , nanotechnology
SUMMARY Coke texture can be shown to be a factor of prime importance in considerations of coke strength and a method has been developed whereby relevant details of the coke texture can be obtained from the microscopic examination of polished coke sections using a Quantimet 720 image analyser. The specimens examined consisted of 10 mm cylindrical cores of the same type as those used for the diametral‐compression test of tensile strength, the cores being mounted in resin and prepared as polished blocks. For a variety of cokes produced on the laboratory scale, and covering a range of porosity from 40 to 60%, the median sizes of pores and pore walls, as determined under the experimental conditions used, varied from about 50–80 μm and 60–120 μm respectively. The number of pores per field of view examined, varied widely from 20 to 220 and the average pore perimeter per field analysed, varied from 70 to 140 mm. The results indicated correlations between the median tensile strength and several of the textural parameters, such as the volume porosity and the average pore‐wall thickness.