Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : June 24, 2020 - June 26, 2020
From the perspective of global warming, reduction of CO2 emissions is being promoted. In the steel industry, coal coke, which is a fossil fuel, is used as a fuel and a reducing agent in a melting furnace（cupola furnace）.This fossil fuel causes global warming due to CO2 emission, and its use is being regulated from the viewpoint of global environmental conservation. In addition, domestic production of coal coke is difficult. From the viewpoint of depletion of fossil fuels, development and practical use of alternative energy sources are required. Therefore, what was developed as an alternative fuel for coal coke is bio-coke（hereinafter BIC）,which is a solid fuel derived from biomass. However, it is difficult to understand its carbonization behavior in the melting furnace because the basic carbonization behavior of BIC has not been clarified. Therefore, BIC of cedar and bamboo with different forming temperatures and pellets of cedar and bamboo were prepared, and the observation of carbonization behavior and the compression test was performed. As a result, there was no difference in the mass change rate of cedar BIC and pellets depending on the molding temperature. On the other hand, for bamboo, although there was no difference in the total carbonization time, the mass change rate at the beginning of carbonization was larger for pellets than for BIC. In addition, the compressive strength between 30s and 60s exceeded 50MPa for both cedar and bamboo, and it was found that they had sufficient compressive strength during casting.
