We attempted the application of the petrogaphic method to the production of the boundry coke.
Informations obtained are as follows.
1) It is impossible to predict the foundry coke strength by the index and iso-coke strength line obtained by Schapiro.
2) The reason why iso-coke strength line obtained by Schapiro cannot apply to the prediction of the foundry coke strength is based on the difference between the carbonization process of the foundry coke and that of the iron coke.
Especially it was shown that a portion of vitrinite of high rank coal reacted as inerts by the quantitative analysis of anisotropic texture about the foundry coke.
3) We made Optimum Reactives/Inarte Ratio and Rank Index for prediction of the foundry coke by micro coke oven's data, and drew up the iso-DI3015 lines for prediction of the foundry coke by the petrographic analysis and 250kg coke oven's data, about many kinds of individual coal and blend coal.
4) It is possible to estimate the microchemical analysis values such as the volatile matter, fixed carbon and free swelling index, and the coking properties of coal by mean maximum reflectance of vitrinite.
5) It is able to check the noncoking coal such as weathed coal and oxidized coal by using the corelation between mean maximum refletaace and free swelling index or maximum dilatation of dilatometer test.
