Study on the coal petrological blending and the prediction of coke strength
- China Coal Research Inst., Xian (China)
The coal petrological research is carried out in order to improve the coke blending method, increase both the coke quality and the prediction accuracy of coke strength, and utilize rationally the coking coal resources. Using a microscope heating stage with a temperature program controller developed by the authors, both the heating behaviors of macerals from Late Permian (P{sub 2}) and Late Triassic (T{sub 3}) coals and the microscopic characteristics of coke are observed and studied. On this basis, the cause of the isometamorphic coals from different ages having different cokabilities is revealed, a new concept of standard active component (V{sub t,st}) is presented, and the method used to measure the vitrinite reflectance in mixed coal is determined. Finally, on the basis of a test in a coke oven with a capacity of 200kg in the Coking Plant of the Chongqing Iron and Steel Company, using the mathematical statistics with the computer, three parameters: standard active component (V{sub t,st}), vitrinite reflectance (R{sub ran}) and its standard deviation (S) are optimized, and the mathematical model which can predict accurately and quantitatively the mechanical strength of coke is established. According to the application in the Coking Plant, it is shown that this method used to predict and control the coke strength not only has a higher accuracy and simplicity, but also is suitable for the complex conditions. Most coking enterprises in China are supplied by various locations from different coalfields, so that the coal qualities are unstable.
- OSTI ID:
- 324635
- Report Number(s):
- CONF-970931-; TRN: IM9911%%332
- Resource Relation:
- Conference: 14. annual international Pittsburgh coal conference and workshop: clean coal technology and coal utilization, Taiyuan (China), 23-27 Sep 1997; Other Information: PBD: 1997; Related Information: Is Part Of Fourteenth annual international Pittsburgh coal conference and workshop: Proceedings; PB: [1500] p.
- Country of Publication:
- United States
- Language:
- English
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