Shandong 1 million TPY Coal Powder Grinding Plant
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Study on Coal Spontaneous Combustion Characteristic ...
Mar 30, 2016· Fires, whether surface or underground, pose serious and environmental problems in the global coal mining industry. It is causing huge loss of coal due to burning and loss of lives, sterilization of coal reserves and environmental pollution. Most of the instances of coal mine fires happening worldwide are mainly due to the spontaneous combustion.
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Experimental Study on the Physisorption Characteristics of ...
In this study, thermogravimetric analysis (TGA) coupled with Fourier transform infrared (FTIR) spectroscopy was used to heat the coal samples of six different coalification degrees from room temperature to 1000°C at 20°C·min −1 under nitrogen atmosphere. The influence of coal degree and pyrolysis temperature on the content of pyrolysis products of coal was analyzed by the TG/DTG curve.
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Fire Risk Assessment of Some Indian Coals Using Radial ...
To emphasize the influence of pyrite on the characteristics of coal spontaneous combustion, samples used in the experiments were mixtures of coal and pyrite. It has been shown that the optimum moisture content for coal oxidation is 14.25 % (Liu 2011). Therefore a low-phosphorus anthracite coal with 10.12 % moisture content was used in the tests.
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Effect of maceral content on tendency of spontaneous coal ...
There are large areas of spontaneous coal combustion in northern and northwestern China. The quantification of greenhouse gas (GHG) emissions resulting from spontaneous coal combustion is an important step toward determining proper management practices to reduce such emissions in the future. The present study investigated the GHG emission characteristics of the spontaneous combustion …
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STUDY ON COMBUSTION CHARACTERISTICS OF COAL-BIOMASS …
Spontaneous coal combustion has occurred since ancient times. Seriously disastrous spontaneous coal combustion events have more recently occurred in the United States, China, Indonesia, South Africa, Australia, Germany, and Poland.4−6 Large areas where spontaneous coal combustion may occur exist, particularly in northern and northwestern China.
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Effects of pyrite on the spontaneous combustion of coal
A study of susceptibility of Indian coals to spontaneous combustion and its correlation with their intrinsic properties. [In:] Proceedings of First International Conference on Mine Environment and Ventilation, ISM, Dhanbad, 347-353.
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CRUDE OIL SHOCKS AND PRICE STABILITY IN NIGERIA | Request …
Characteristics, Evaluation and Risk Assessment. Author: Xinyang Wang; Publisher: Springer Nature ISBN: 3030336913 Category: Science Page: 240 View: 3536 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 …
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Experimental Study on Greenhouse Gas Emissions Caused by ...
spontaneous combustion. As the liptinite content in coal increases, the susceptibility of these coals to spontaneous combustion increases. 3. Materials and method 3.1. Coal samples and laboratory studies The R70 test has been successfully used for the assessment of the tendency of spontaneous coal combustion. In this study, 51 coal samples
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Influence of Water Content on the Coal Spontaneous ...
For safe storage and use of coal, it is very important to know about its liability to spontaneous heating. It is known that, spontaneous heating is dependent upon intrinsic and extrinsic parameters. In the present work, the spontaneous combustion susceptibility of a number of coal samples belonging to different coalfields have been
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Evolution characteristics of spontaneous combustion in ...
This paper discusses the combustion characteristics of coal and torrefied biomasses. Combustion profiles can be used to study certain combustion properties of fuels and fuel blends. The biomass fuels utilized in this study include twig, trunk and weed as the wastes from tea plantation.
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Sontaneous Heating Characteristics of Coal
The object of this study is coals of different stages of metamorphism and the volatile products of their thermal decomposition. Currently, based on the basic genetic signs of metamorphism, there is no reliable regulatory framework for determining the hazardous properties of mine plastics, including the propensity of coal for spontaneous combustion.
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PRB Coal Degradation - Causes and Cures - Coal Combustion
The spontaneous combustion zone of the goaf is divided according to the basic conditions of the oxidizing environment and coal spontaneous combustion in the goaf. When dividing the spontaneous combustion zone in the mined area, three indices are usually used: O 2 concentration, air leakage rate in the goaf and the temperature characteristics of ...
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Studying relationship between coal intrinsic ...
Another way to characterize coals is to determine the thermal energy released when the coal is burned. We have already introduced the concept of heating value, and the range of these values for coals (see Chapter 6). We can also measure other characteristics of coals that help predict how coals will behave when handled and burned. This series ...
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Gases and thermal behavior during high-temperature ...
(2020). Influence of Water Content on the Coal Spontaneous Combustion Behavior during Low-temperature Pre-pyrolysis Processes. Combustion Science and Technology. Ahead of Print.
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Study on Pyrolysis Characteristics of Coal and Combustion ...
There are large areas of spontaneous coal combustion in northern and northwestern China. The quantification of greenhouse gas (GHG) emissions resulting from spontaneous coal combustion is an important step toward determining proper management practices to reduce such emissions in the future. The present study investigated the GHG emission characteristics of the spontaneous combustion …
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Analysis of Metamorphism and Tendency of Black Coals to ...
Apr 28, 2020· A study of spontaneous combustion characteristics of a Turkish lignite: particle size, moisture of coal, humidity of air. Combustion and Flame 133, …
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AN ADIABATIC METHOD FOR STUDYING SPONTANEOUS …
1. Introduction. Coal can, and often does, undergo substantial oxidation after exposure to air under ambient conditions. This has been recognized as one of the primary reasons responsible for the self-heating of coal and, in extreme cases, the spontaneous combustion of coal in mines and stock piles [1, 2].In general, the rate of oxygen consumption by coal decreases with an increase in the ...
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Experimental study on the effect of preinhibition ...
Apr 24, 2020· The initial stage of coal spontaneous combustion involves coal low-temperature oxidation, in which oxygen permeates into the coal through pores, …
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Chapter 7 COAL
Studying relationship between coal intrinsic characteristics in spontaneous combustion of coal potential using crossing point temperature test method A case study: Tabas Parvadeh coal mines, Iran A. Saffari*, M. Ataei and F. Sereshki ... energy around the world and as the basic energy source in the production industry of many countries [1, 2].
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INVESTIGATION INTO SPONTANEOUS COMBUSTION …
Mar 09, 2017· The phenomenon of coal spontaneous combustion is one of the common hazards in coal mines and also one of the important reasons for the loss of coal in piles and mines. Based on previous researches, different types of coals have different spontaneous combustion characteristics. For coal loss prevention, a measure is necessary for prediction of coal spontaneous combustion. In this study…
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Experimental Study on Greenhouse Gas Emissions Caused by ...
Jan 01, 1992· Effect of thermal upgrading on spontaneous combustion characteristics of western Canadian low rank coals Olayinka 1. Ogunsola and Randy J. Mikula Energy, Mines & Resources, Canada, CANMET Coal Research Laboratory, PO Bag 1280, Devon, Alberta, Canada TOC 1 EO {Received 2 January 1991 ; revised 31 May 1991) The results of an experimental study aimed at evaluating the spontaneous combustion ...
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Assessment of self-heating susceptibility of Indian coal ...
The effects of crude oil on the microstructure and spontaneous combustion characteristics of coal were assessed, using raw coal sample and coal samples containing 5%, 10% and 15% oil.
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A Combined Raman Spectroscopic and Thermogravimetric ...
(2020). Influence of Water Content on the Coal Spontaneous Combustion Behavior during Low-temperature Pre-pyrolysis Processes. Combustion Science and Technology. Ahead of Print.
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Thermal behavior and microcharacterization analysis of ...
Jan 01, 2014· It has great importance to study on the characteristic temperatures for prediction and prevention of coal spontaneous combustion. Base on the temperature programmed experiment system and original index gases analysis, establish growth rate analysis to test index gases of CO and C 2 H 4, CO/CO 2 and alkane ratio so that to determine the characteristic temperatures of different …
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Study of the influence of the characteristics of loose ...
Dec 20, 2018· To explore the effects of methane on the characteristics of coal spontaneous combustion, coal low-temperature oxidation and Fourier transform infrared spectroscopy experiments were conducted. The tested airflows had an oxygen–nitrogen ratio of 0.266, and methane concentrations of 0−3% by volume.
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