Morphological Composition of Hard Coal Dust and Its Influence on Explosion and Fire Hazard of Mining

Родионов, В. А.; Tsygankov, V.D.; Zhikharev, Sergey

doi:10.46689/2218-5194-2020-1-1-145-158

Cited by 2 publications

(5 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Directly in the mine working, the finished measurement result can be visualized on the device monitor as a percentage of elements. Figure 4 shows a spectrogram of one of the studied samples obtained using X-SPEC-50H, which displays only elements belonging to metals [14]. Fig.…”

Section: Discussion and Resultsmentioning

confidence: 99%

“…After an external visual and optical inspection of the bore core and cuts, the samples were sorted. Optical inspection of the bore core and cuts from it was carried out by analyzing photographs of samples obtained using a Sony α5000 camera equipped with a standard macro lens [2,14,18]. As a result, three most characteristic groups were identified.…”

Section: Methodsmentioning

confidence: 99%

“…It can be implemented both with the help of stationary and portable (hand-held) devices. This method allows qualitative, semi-quantitative and quantitative determination of all elements from beryllium to uranium in powdered, solid and liquid samples [2,14]. Currently, the devices that allow you to perform XRF and application software to them are highly scientific, intuitive for their use by an untrained operator equipment.…”

Section: Methodsmentioning

confidence: 99%

“…The need to find new solutions to improve industrial safety, namely, the development of methods for preventing spontaneous combustion and explosion processes, innovative methods for integrated monitoring of the mine workings space and, above all, the face (stoping sites) is confirmed not only by Russian scientists in their works, but also by their foreign colleagues [2,[5][6][7][8][9][10][11]. For example, the hazardous content of bound sulfur in rocks at which processes of spontaneous combustion are not excluded and dust explosion is possible starts from 18%, such a regulatory requirement is contained in the Guidelines of the Department of Industry and Resources of Australia, while in a number of other countries, including Russia, the sulfur content is 35% [2,6,[12][13][14]. Due to the fact that a number of works provide information on multiple spontaneous combustion and dust explosions in mine workings, and also the above discrepancies on the dangerous threshold of sulfur content in the rocks containing the ore body, we consider it necessary to have regulatory requirements or recommendations for the use as a preventive measure of assessing the danger of polymetallic rocks mining including sulfur and sulfur-containing minerals for the widespread implementation of express methods for assessing the sulfur content in the rock mass [15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

“…One of these express methods is the energy-dispersive X-ray fluorescence analysis method. Modern applied material and technical support makes it possible to implement the application of this method directly at the underground ore mining site [14,20].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Method of rapid assessment of sulfide sulfur content in host rocks

et al. 2021

View full text Add to dashboard Cite

The aim of the research is to assess the possibility of using the energy-dispersive X-ray fluorescence method directly at the stoping operation site. To meet this objective, a hand-held X-ray fluorescence spectrometer of the expert class of the NITON XL2 brand was selected. This will solve the problem of developing an express method for assessing the explosive and fire-hazardous properties of sulfur-containing or pyrite-containing ore. The development of the method is dictated by the need for operational control of the dust explosion hazard of sulfur-containing rocks and the assessment of their tendency to spontaneous combustion and also the possibility of making amendments to the development process of complex heterogeneous host rocks. Visual and optical control methods were used as an auxiliary method. In the process of developing the express method, both express analyses were carried out directly at the face bottom, and monolithic large-sized pieces of mined rock mass and also additional laboratory studies of previously studied samples of these rocks dispersed to a size of less than 100 microns were performed. The obtained results allowed to draw a number of conclusions about the expediency of using the X-ray fluorescence express method and suggest ways to use it directly in the stoping face.

show abstract

Section: Discussion and Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%