A simplified model for SO2 generation during spontaneous combustion of coal gangue was put forward and validated using the measured data. Using proposed model, effects initial temperature inside fresh air supply on were discussed. The results showed that, higher could accelerate oxidation rate FeS2 increase maximum concentration SO2. If increased by about 37%, total 166%. Fresh had less signifi...

Designing pulverized coal combustion simulation and visualization systems is still a complex task. The current solutions, such as the commercial CFD packages are focused on the precision of the computation. Our solution is suited to the education and computer graphics area, where the precision does not take the first, but also not the last place. The main factor in our solution utilizes the int...

Immediately and accurately assessing the risk of coal spontaneous combustion taking targeted action are crucial steps in prevention control. A new model, AEM-AHP-LSTM, was proposed to solve weight calculation problem multiobjective evaluation process combustion. Firstly, key indicators were analyzed used as factors establish an system. Next, objective subjective weights calculated using AEM AHP...

Coal is a major source of energy. The available Indian coal quality is very poor having very high ash content and low calorific value. Indian coal generates a large quantity of ash as a by-product of combustion. The objectives of the present study were to reduce the ash content of coal to produce ultra-clean coal. The coal was treated wi...

In the past, acid mine drainage (AMD) associated with coal mining operations and the disposal of coal refuse have been a driving force behind research efforts on the properties of coal combustion products (CCPs) [1]. The results from research over the last 15 years clearly indicate that bulk-blended CCP has the potential to ameliorate AMD production in coal refuse as long as acid-base balance c...

This report describes work completed during the eleventh quarter of a DOE-funded study of mineral transformations and ash deposition during staged combustion. Accomplishments included repairs and improvements to the laboratory combustor, collection of deposits and observation of deposition behavior as a function of operating conditions, and analysis of deposit samples collected under both stage...

The indicative ability of a gas indicator for the spontaneous combustion coal is affected by secondary oxidation oxidized coal, from old goafs, entering new goaf through air leakages. This phenomenon can affect accuracy early warning systems regarding in goaf. In this research, three kinds were selected to carry out simulation experiment which temperature-programmed experimental device was used...