Abstract
The quantity of combined water in Korean anthracites has been investigated at various temperatures below $200^{\circ}C$ by the thermogavimetric method in the nitrogen atmosphere. The results were as follows; $150^{\circ}C{\cdots}$0.3~0.5%, $175^{\circ}C{\cdots}$0.1~0.2%, $200^{\circ}C{\cdots}$0.06~0.1%, On the other hand, the combustion rate of briquttes depends upon the characteristic of it's kind. The rate was rapid in the state of proper moisture than dry and the effusion velocity of oxygen in dry briquttes was larger than the moistured, but the effusion velocity didn't relate to the combustion rate directly.
熱天秤을 利用하여 窒素氣流中에서 $200^{\circ}C$以下의 여러 溫度에 걸쳐 國産無煙炭內의 化合水分에 對하여 考察하였다. 無煙炭內의 化合水分 含量은 $150^{\circ}C$에서 0.3~0.5%, $175^{\circ}C$에서 0.1~0.2%, $200^{\circ}C$에서 0.06~0.1% 였다. 한편 成型孔炭의 燃燒速度는 無煙炭의 個個의 特性에 따라 다르며 孔炭內에 適量의 水分이 存在할 때는 乾燥된 狀態時보다 燃燒速度가 促進되었다. 또한 乾燥孔炭中의 酸素擴散速度는 含水時보다 크지만 擴散速度는 燃燒速度에 直接的인 關係가 없었다.