by United States Dept. of the Interior, Bureau of Mines in Pgh. [i.e. Pittsburgh] PA .
Written in English
Includes bibliographical references (p. 29-30).
|Statement||by Alex C. Smith, Yael Miron, and Charles P. Lazzara.|
|Series||Report of investigations ;, 9346, Report of investigations (United States. Bureau of Mines) ;, 9346.|
|Contributions||Miron, Yael., Lazzara, Charles P.|
|LC Classifications||TN23 .U43 no. 9346, TP325 .U43 no. 9346|
|The Physical Object|
|Pagination||ii, 30 p. :|
|Number of Pages||30|
|LC Control Number||90015084|
1. Introduction. Coal is one of the most important energy resources in the world, accounting for % of the world's primary energy (Ren et al., ; Zhang et al., a).However, the spontaneous combustion of coal seriously threatens the safety production of coals (Zhang et al., b).As one of the major mine disasters, spontaneous combustion is widespread during coal Cited by: 1. Characteristics, Evaluation and Risk Assessment. Author: Xinyang Wang; Publisher: Springer Nature ISBN: Category: Science Page: View: DOWNLOAD NOW» This book aims to understand, analyze and mitigate the harmful impacts of spontaneous coal combustion in underground mines, a thermal phenomenon that triggers fires and explosions threatening the safety of mine . This book aims to understand, analyze and mitigate the harmful impacts of spontaneous coal combustion in underground mines, a thermal phenomenon that triggers fires and explosions threatening the safety of mine workers on: Shenyang. The higher the ventilation velocity, the greater the risk of coal spontaneous combustion. • O 2 trends to diffuse first at the air inlet side without coal spontaneous combustion.. O 2 is difficult to migrate through the high-temperature area to the deeper goaf.. Explosive gas is formed above high temperature areas affected by the chimney effect.
Spontaneous combustion, the outbreak of fire without application of heat from an external neous combustion may occur when combustible matter, such as hay or coal, is stored in begins with a slow oxidation process (as bacterial fermentation or atmospheric oxidation) under conditions not permitting ready dissipation of heat—e.g., in the centre of a haystack or a pile of. Figure World map of coal fire regions (Prakash, ). 2 Figure An illustration of the fundamental phenomena occurring in the coal oxidation process (Wang et al., ). 7 Figure Schematic showing spontaneous combustion of large amount of coal stock, (a), (b) and (c): Hot spot forming process with accumulating heat and shrinking. 17 hours ago Oxidation of pyrite in the coal gangue dumps usually results in acidification and spontaneous combustion, causing many environmental problems such as air, soil, and water pollution. The oxidizing bacteria exacerbate problems such as acidification, spontaneous combustion, and explosions. The bacterium Acidithiobacillus ferrooxidans was first separated and isolated from coal . Spontaneous combustion or spontaneous ignition is a type of combustion which occurs by self-heating (increase in temperature due to exothermic internal reactions), followed by thermal runaway (self heating which rapidly accelerates to high temperatures) and finally, autoignition.
Spontaneous combustion IEA Clean Coal Centre – Assessing and managing spontaneous combustion of coal 10 2 Spontaneous combustion All coals oxidise when newly exposed to air, especially during and after mining. This tends to be more of a problem in lower rank coals. Powder River Basin (PRB) coal was first used in and, although the new. User Tools. Cart. Sign In. India has the largest concentration of coal fires, and it is estimated that 80% of those fires started due to spontaneous combustion. Indian coal fires were first documented in coal fields located in Raniganj back in In addition, mines in Jharia, Jharkhand are famous for their rich coal resources, but records show nearly 70 fires have been burning for over years dating back to Through systematic geologic field investigations and the study of fires in the Wuda coalfield, inner Mongolia autonomous region, we have established a spontaneous combustion genesis model, a coal-fire propagation model, a model of the progressive stages of a coal fire, and a model of zones that are conducive to spontaneous combustion in a mined.