Development of an energy analysis for strip coal mining. Part III: Procedure for evaluating the energy intensity of technological processes

1998 ◽  
Vol 34 (6) ◽  
pp. 518-528
Author(s):  
A. S. Tanaino
Keyword(s):  
Coal Mining ◽  
Energy Intensity ◽  
Energy Analysis ◽  
Technological Processes

Energy analysis of open-pit coal mining

1997 ◽  
Vol 33 (5) ◽  
pp. 453-462 ◽  
Author(s):  
M. V. Kurlenya ◽  
A. S. Tanaino
Keyword(s):  
Coal Mining ◽  
Energy Analysis ◽  
Open Pit

Energy analysis of an electric furnace with a vibration hearth for roasting vermiculite concentrates

2019 ◽  
pp. 7-12
Author(s):  
A. I. Nizhegorodov
Keyword(s):  
Electric Furnace ◽  
Specific Energy ◽  
Energy Intensity ◽  
Energy Analysis ◽  
Furnace Unit ◽  
Refined Model ◽  
Absorption Models ◽  
Temperature Time

An energy analysis of an electric furnace with a vibration hearth using previously obtained analytical absorption models and a new, refined model of vermiculite heat assimilation is presented. The temperature-time equation, the formulas of the productivity of the furnace unit and the specific energy intensity of the calcination of vermiculite concentrates are obtained. It is shown that the new concept furnaces have a specific energy intensity of not more than 77.8 mJ/m3, which is more than three times lower than the energy intensity of fiery furnaces for roasting vermiculite. Ill. 4. Ref. 14.

scholarly journals Simulation of Technological Processes in Coal Mining

2013 ◽  
Vol 46 (9) ◽  
pp. 2173-2178
Author(s):  
Victor V. Okolnishnikov ◽  
Sergey S. Rudometov ◽  
Sergey S. Zhuravlev
Keyword(s):  
Coal Mining ◽  
Technological Processes

scholarly journals Gas Release Characteristics in Coal under Different Stresses and Their Impact on Outbursts

Energies ◽  
2018 ◽  
Vol 11 (10) ◽  
pp. 2661 ◽  
Author(s):  
Hanpeng Wang ◽  
Bing Zhang ◽  
Liang Yuan ◽  
Guofeng Yu ◽  
Wei Wang
Keyword(s):  
Theoretical Analysis ◽  
Coal Mining ◽  
Energy Analysis ◽  
In Situ Stress ◽  
Gas Release ◽  
Impact Mechanism ◽  
Fracture Development ◽  
The Impact ◽  
Different Gases

The impact mechanism of in situ stress on outbursts plays a key role in the prevention of outbursts during deep coal mining. The in situ stress may influence the outburst by affecting the gas release intensity according to theoretical analysis, but none of the existing studies have taken into consideration this perspective. To explore whether the influence of in situ stress on gas release in coal is an important reason for stress-induced outbursts, experiments on gas release in coal under different axial stresses and on exposure-induced outbursts with different gases were conducted to respectively study the influence of in situ stress on gas release and the impact of gas release on outburst. The results show that with the increase of stress, the methane release intensity rises by 1~2.4 times and shows an obvious periodicity due to different degrees of fracture development. A small increase in gas release intensity can lead to huge increase in the outburst intensity based on an energy analysis of the outburst experiments, indicating that the gas release intensity is a sensitive physical quantity that influences outbursts. The differences in gas release in coal with different stresses will result in differences in the outburst results based on data from the two experiments, proving that the change in gas release intensity during variations of in situ stress is an important factor for in situ stress-induced outbursts. The research achievements can enrich the impact mechanism of in situ stress on outbursts.

scholarly journals An MTSS Based Underground Coal Mining Simulation Model

2018 ◽  
Vol 8 (3) ◽  
pp. 3060-3063
Author(s):  
V. Okolnishnikov
Keyword(s):  
Coal Seam ◽  
Simulation Model ◽  
Coal Mining ◽  
Simulation System ◽  
Mining Equipment ◽  
Underground Coal Mining ◽  
Technical Parameters ◽  
Technological Processes ◽  
Model Library ◽  
System A

In the frames of simulation system, a specialized library of simulating models of mining equipment and coal seam (MTSS) was implemented. Using the specialized simulating model library of technological mining equipment an integrated model for technological processes of underground coal mining in stoping face was developed. The main goal of simulation for coal mining technological processes in stoping face is the evaluation of productivity of a cutter-loader depending on different factors like the technical parameters of the cutter-loader, size of the longwall face, geophysical state of the coal seam.

A General Method for Spectrometer Design in the Scoff Approximation

1976 ◽  
Vol 34 ◽  
pp. 538-539
Author(s):  
J. R. Fields
Keyword(s):  
Electron Microscope ◽  
Transmission Electron Microscope ◽  
Energy Analysis ◽  
Incident Beam ◽  
Scanning Transmission Electron Microscope ◽  
Chemical Identification ◽  
Scanning Transmission Electron ◽  
Transmission Electron ◽  
Scanning Transmission ◽  
General Method

The energy analysis of electrons scattered by a specimen in a scanning transmission electron microscope can improve contrast as well as aid in chemical identification. In so far as energy analysis is useful, one would like to be able to design a spectrometer which is tailored to his particular needs. In our own case, we require a spectrometer which will accept a parallel incident beam and which will focus the electrons in both the median and perpendicular planes. In addition, since we intend to follow the spectrometer by a detector array rather than a single energy selecting slit, we need as great a dispersion as possible. Therefore, we would like to follow our spectrometer by a magnifying lens. Consequently, the line along which electrons of varying energy are dispersed must be normal to the direction of the central ray at the spectrometer exit.

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