Estimate of sulfur, arsenic, mercury, fluorine emissions due to

A rough estimate of the annual amount of sulfur, arsenic, mercury and fluoride emission from spontaneous combustion of coal gangue in China was determined. The weighted mean …

Three-dimensional distribution and oxidation degree analysis of …

Spontaneous combustion of coal gangue dumps poses a significant threat to the health and safety of nearby residents and has adverse effects on the environment. The …

Study on Pyrolysis and Oxidation Characteristics of Coal Gangue …

Coal gangue spontaneous combustion has caused serious environmental and ecological problems. To investigate the reaction kinetic parameters of the gangue and the …

A Simplified Model for SO2 Generation during Spontaneous Combustion …

Spontaneous combustion of coal gangue not only releases hazardous trace elements (such as, As, Hg, and Pb) that contaminate the soil and water [3 – 6], but also …

The thermal transformation behavior and products of pyrite during …

With the rapid economic development of China in the past decades, an increasing number of coal gangue piles have been accumulated, causing serious social and …

Overview of commonly used materials for coal spontaneous combustion

The typical incidents of coal and gangue spontaneous combustion in the world are illustrated in Fig. 2 [23 ... Considerable inhibition effect on high sulfur coal: ... The study of the …

Prevention and control of spontaneous combustion/fire in coal

After locating the high-temperature points in the gob area, anti-fire suppression measures are needed to inhibit the accelerated oxidation of coal and prolong the spontaneous …

Research on the technology of detection and risk assessment of …

To realize the safety management of coal gangue spontaneous combustion and evaluate its present risks, this paper selects the Dongzhou Kiln gangue hill in Zuoyun County, …

Study on oxidation characteristics of coal gangue with different

Coal gangue, which accumulates in the open air, is modified by immersion in rain, and exhibits different tendencies to spontaneous combustion in different areas of precipitation. To …

Experimental study of the effects of stacking modes on the spontaneous

The #3 and #15 coal seams are the main minable coal seams. The #3 coal seam has been found to demonstrate low spontaneous combustion propensity. Meanwhile, the #15 coal seam, which …

Correlation analysis of stage division and gas precipitation rule of

Coal gangue is produced in the washing and processing process of coal mining. Without treatment, it is dumped naturally to form a gangue mountain. Long-term heat storage leads to …

Detection of Spontaneous Combustion Areas of Coal …

gel- to control spontaneous combustion of coal gangue.32 To prevent spontaneous combustion of coal gangue dumps, Tang and Wang developed a type of bentonite-acrylamide …

Influence of soil cover on reducing the environmental impact of

This study seeks to provide an in-depth discussion of the influence of reclamation measures on: (i) the chemical and mineralogical composition of the fired coal gangue; (ii) the …

Accelerated oxidation behaviors and thermodynamic …

The annual emission of high sulfur coal gangue is 109–146 million tons, increasing to 45–70 ... is a widely used thermal analysis technique that measures the relationship …

Study on the experiment and reaction kinetics of sulfur removal …

To solve the safety problem of spontaneous combustion of high-sulfur coal, applied microbiology, physical chemistry, reaction kinetics theory, combined with the SEM, FTIR and …

Study on Pyrolysis and Oxidation Characteristics of Coal …

all stages, so as to reveal the spontaneous combustion mechanism of the gangue reaction process and to lay the foundation for the adoption of effective spontaneous combustion control …

A novel high polymer nanocomposite inhibitor for coal gangue

As a result, PAM/MMT could suppress coal gangue oxidative spontaneous combustion, so as to reduce environmental problems caused by coal gangue spontaneous …

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(PDF) Environmental characterization of burnt coal gangue banks …

The volatilization potential of major and trace pollutants during spontaneous combustion was obtained from the field coal gangue/ fired coal gangue concentration ratios. The very low ratios …

A novel high polymer nanocomposite inhibitor for coal gangue

First, through scanning electron microscope (SEM), energy-dispersive spectrometer (EDS), and proximate analysis experiments, it was found that the coal gangue in the …

A short review of the sustainable utilization of coal …

Results showed that the treatment with 70-mesh high-sulfur coal gangue was most effective, and with application rates of 16, ... by activating coal gangue into highly reactive silica and alumina species using a green and …

Theoretical model for spontaneous combustion gangue coarse …

Spontaneous combustion gangue coarse aggregate concrete filled steel tube (SCGCA-CFST) provides a possibility for the structural application of spontaneous combustion …

Characteristics of sulfate-reducing bacteria and organic bactericides

High-salinity acid drainage and spontaneous combustion caused by the oxidation of coal gangue piles are one of the pollution sources that seriously harm the environment in coal …

Experimental study of the effects of stacking modes on the spontaneous

Generally speaking, coal gangue normally contains pyrite, and approximately 15% residue coal or other organics, which provide the preconditions for spontaneous combustion …

Estimate of sulfur, arsenic, mercury, fluorine emissions due to

The weighted mean concentrations of S, As, Hg, and F in coal gangue are 1.01%, 7.98, 0.18, and 365.54 mg/kg, respectively. Amounts of S, As, Hg, and F emissions from coal …

Research on the technology of detection and risk …

and borehole temperature detection technologies, and a coal gangue spontaneous combustion risk assessment method is established, while the gas toxicity and explosion risks of the …

Detection of Spontaneous Combustion Areas of Coal Gangue …

The main fire extinguishing methods for spontaneous combustion of coal gangue dumps include the excavation and cooling method, the grouting method, the overlay …

Detection of Spontaneous Combustion Areas of Coal Gangue …

Sulfur crystals detected at the flat exhaust port of the dump. 2.2. Spontaneous Combustion Characteristic of Coal Gangue Dumps. The oxidation heating process of spontaneous …

Co-spontaneous combustion of coal and gangue: Thermal …

Once spontaneous combustion occurs in high sulfur gangue hills, a large number of dusts, greenhouse gases such as CO 2 and CH 4 are produced [9]. It may even give rise to …

Estimate of sulfur, arsenic, mercury, fluorine emissions due to

The content of sulfur was determined by High Temperature Catalytic – Coulometric Titration ... The finding in this paper may imply that coal gangue spontaneous combustion is …

Study on Natural Characteristics of Coal Gangue Oxidation under …

The exposed accumulation of coal gangue undergoes changes when it is soaked by rainwater, exhibiting varying tendencies for spontaneous combustion in different precipitation …