塩散布による堆積炭じんの処理に関する研究
1967 年 83 巻 948 号 p. 637-645
詳細
1967 年 83 巻 948 号 p. 637-645
The aim of this study is to prevent the risk of coal dust explosion and to reduce the health hazard of miners by consolidating coal dust deposited on floor, ribs and roof-skim.
Deposition of coal rich dust on a mine roadway might increase the risk of coal dust explosion, if a substantial amount of coal dust remains loosely on the surface of the road.
This paper describes the effect of the consolidation of deposited coal dust by spraying deliquescent salts, such as CaCl2, NaCl, MgCl2 and antirust agents or surface-active agents.
Experimental results abtained are as follows;
1) Increase of moisture or suppression of its vaporization in deposited coal layers is due to hygroscopei c phenomenon of salts.
2) Suppressions of coal dust are gained excellently by consolidating action of salts.
3) Inflammability of coal dusts is loweredby addition of salts.
