Results 211 to 220 of about 34,944 (257)

Infrared temperatures of coal dust explosions

Combustion and Flame, 1983
Abstract A comprehensive set of temperature measurements is presented for coal dust explosions as a function of dust concentration. Data include the dependence of explosion temperature on particle size, volatility, oxygen content, and added rock dust.
Kenneth L. Cashdollar, Martin Hertzberg
openaire   +1 more source

Explosive Testing of Rock Dust Dispersibility for Coal Dust Explosion Prevention

2018
Limestone rock dust is used in many coal mines to inertize coal dust and prevent mine explosions. Since rock dusting creates a nuisance to workers downwind from the dust application, suppliers are offering wet and foam-applied rock dust products. Researchers at the Colorado School of Mines have constructed a full-size explosion test drift where they ...
Jürgen F. Brune, Richard C. Gilmore
openaire   +1 more source

Modeling and simulation of coal dust explosions

Journal de Physique IV (Proceedings), 2002
Existed work of former researchers on dust explosion/detonation modeling is reviewed. A coal dust explosion model is developed. Validation of the model is carried out for a type of coal with wide range of size distribution. The characteristics of presented model is: 1. Eulerian-Lagrangian two phase flow model; 2.
S. Zhong, A. Teodorczyk, X. Deng, J. Dang   +3 more
openaire   +1 more source

Explosibility of Victorian brown coal dust☆

Fuel, 1988
The explosibility of Victorian brown coal dusts has been investigated in a wide range of equipment, including the 1.2 dm3 Hartmann bomb and the 201 spherical bomb. The Hartmann bomb seriously underestimates the explosibility of brown coal dust and empirical relations between Hartmann bomb and spherical bomb results cited in the literature are not valid
openaire   +1 more source

Post-explosion observations of experimental mine and laboratory coal dust explosions

Journal of Loss Prevention in the Process Industries, 2007
Abstract The Pittsburgh Research Laboratory (PRL) of the National Institute for Occupational Safety and Health (NIOSH) and the Mine Safety and Health Administration (MSHA) conducted joint research on dust explosions by studying post-explosion dust samples.
Kenneth L. Cashdollar, Eric S. Weiss, Terry G. Montgomery, John E. Going   +3 more
openaire   +1 more source

Coal Dust Explosions in the Cement Industry

1987
The number of coal fired industrial systems and utility power plants is rapidly increasing because of the high cost and uncertain availability of fuel oil and natural gas. For many cement producers in the United States, the conversion from fuel oil and natural gas to pulverized coal has been difficult, frustrating, and in a few cases, very costly. This
AN Alameddin, SJ Luzik
openaire   +1 more source

Mechanism research of gas and coal dust explosion

Journal of Coal Science and Engineering (China), 2009
Combined with the experimental results from the large tunnel of the Chongqing Research Institute, the mechanism of gas and coal dust explosion was studied. Some concepts about gas and coal dust explosion were introduced such as the form condition and influential factors.
Yan-song Zhang, Li-li Han, Lei Wang
openaire   +1 more source

Propagation of Coal Dust Explosions in Pipes

1987
This paper discusses the possibilities of pulverized coal explosions in pneumatic conveying. To characterize the coal dust explosions, we measured, at different points on rectilinear pipes, possibly connected to a 1-m3 vessel, explosion overpressures, Pmax, and flame speeds.
JP Pineau, G Ronchail
openaire   +1 more source

A model for coal dust duct explosions

Combustion and Flame, 1982
Abstract A theoretical discussion is given of the propagation of a dust explosion in a linear duct or pipeline. The particular aim is to investigate the experimental observation that propagating explosions are much harder to initiate in small laboratory scale ducts than in, say, coal mine galleries.
openaire   +1 more source

Coal Dust Explosions

1985
A brief information about the mechanism of coal dust explosions is given. Some of the important factors affecting the explosibility of the dust are discussed and some reliable criteria which can be helpful in coping with the explosive dust are explained. Also the main aspects of the preventive measures against the coal dust explosions are introduced.
openaire   +1 more source