Consideration on the Explosion Limit of Coal Dust-Rock Dust Mixtures in the High Concentration Region
Explosion characteristics of coal dust-rock dust mixture (Part IV)
1983 Volume 99 Issue 1150 Pages 1035-1040
Details
1983 Volume 99 Issue 1150 Pages 1035-1040
The same technique as described in the last report (Part III) was used to obtain the equations showing the relation under explosion limit in the region of higher dust concentration than the apparent stoichiometric dust concentration, Cst, that is ca. 250g/m3. However the equation obtained did not fit the experimental data. Then the modified equation showing the relation between the mixed dust concentration, D, and the percentage of rock dust mixed, R, was obtained._??_, _??_
Comparisons of the equations to some experimental data are shown in figures.
Results so far obtained show that the most important characteristic functions are Rm, rm, and Cu. Then the correlation between these three values was obtained. Resultant equation is, _??_Cu may be estimated from a reported equation, Cu 60V +6.4/dc-1350where V: volatile content in pct, dc: coal particle diameter in cm. Values of Rm of most of coals produced in the world are known experimentally. Then rm can be estimated.
