Adsorption of Tuberculin by Coal Dust

Deformation of Coal Induced by Methane Adsorption at Geological Conditions

The quenched solid density functional theory (QSDFT) is employed to study methane adsorption on coal at geological conditions. Themain focus is made on coal deformation in the course of adsorption that may result in either expansion/swelling or contraction, depending upon the pressure, temperature, and pore size. Twoqualitatively different types of deformation behaviorwere found depending upon ...

How does limestone rock dust prevent coal dust explosions in coal mines?

Coal dust explosions in underground coal mines are pre­ vented by a generous application of rock dust (usually lime­ stone). If an explosion should occur, the rock dust disperses, mixes with the coal dust and prevents fl ame propagation by acting as a thermal inhibitor or heat sink. To investigate this process in more detail, a number of ex­ plosion experiments using various coal dust and limes...

Airborne Dust Liberation During Coal Crushing

Impact of Gas Adsorption Induced Coal Matrix Damage on the Evolution of Coal Permeability

It has been widely reported that coal permeability can change from reduction to enhancement due to gas adsorption even under the constant effective stress condition, which is apparently inconsistent with the classic theoretical solutions. This study addresses this inconsistency through explicit simulations of the dynamic interactions between coal matrix swelling/shrinking induced damage and fra...

Further studies of the dust in lungs of coal-miners.

In a previous communication (King and Nagelschmidt, 1945), analytical data were given for the amount and composition of the dust found in the lungs of 54 coalworkers from South Wales. Coal, total silica, quartz, mica, and kaolin were determined as the percentages of dried lung tissue, and the results were related to type of work and degree of pathology. The main findings were the following: (1)...