石炭の自然発熱性に関する研究 (第1報)
連続昇温酸化における石炭の重量変化
1968 年 84 巻 966 号 p. 1504-1510
詳細
1968 年 84 巻 966 号 p. 1504-1510
In this paper, the authors described the relation between the weight variation and the spontaneous combustibility of coals.
Experiments were carried out at a constant heating rate by means of a highly sensitive thermobalance, and the weight variation of sample was measured as a function of temperature.
The oxidation process is composed of several stages, however, those stages partly overlap each other. Therefore, we divide them into four stages.
In the first stages the coal gains weight than original.In the second stage it loses weight.During the third stage which starts after the weight curve has passed through the minimum point, a sharp increase in weight is observed.In the fourth stage a rapid decrease in weight is observed.
Therefore, the authors conclude that the third stage must be able to show the susceptibility of coals for spontaneous combustion.Experiments have been made to research the various factors affecting the oxidation process and some interesting results have been observed.
