pISSN : 1598-706X / eISSN : 2288-8381
한국주조공학회지 (9권3호 247-256)
A Study on Gasification Reaction and Strength of Foundry Coke and Lump Anthracite Coal
주물용 코우크스와 무연괴탄의 가스화 반응과 강도에 관한 연구
Nam-Don Cho, Jong-Hoon Kim
The gasification reaction rates by CO_2 in CO/CO_2/N_2 of various compositions in the temperature range of 900-1200℃ were measured for foundry coke and anthracite lump. The data for the rates was analyzed with Langmuir-Hinshelwood rate equations for the gasification of carbonaceous specimens. The values of the apparent activation energies of the reactions obtained from these data were ranged to be 47-99 and 73-128Kcal/mol respectively for foundry coke and for anthracite lump. The major contribution to decrease in tensile strength was shown to be attributable to the enlarging of the macropores in the coke and that of crack in the anthracite lump. Under the same experiment of the gasification of foundry coke, the rate of form coke was increasing as the addition of Fe_2O_3 increases.