All-stage coal spontaneous combustion experimental system
An experimental system, coal spontaneous combustion technology, applied in the field of coal spontaneous combustion experiments, can solve the problems of poor repeatability, long experimental period, and increased difficulty of simulation and comparative research
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[0046] The overall structure of the whole-stage coal spontaneous combustion experimental system is as follows: figure 1 As shown, the experimental system is designed to use a maximum temperature of 1000°C, and the maximum temperature used in the experiment is 800°C.
[0047] 1. Materials:
[0048] The hearth of the experimental furnace is all made of mullite refractory material. Mullite (3Al 2 o 3 2SiO2 2 ) High-alumina refractory material with main crystal phase, Al 2 o 3 The content is between 72% and 75%. Mineral composition In addition to mullite, it also contains a small amount of corundum. The refractoriness is high, up to 1790 ° C, which is better than clay refractory materials. The starting temperature of load softening is 1600-1700℃, and the thermal shock resistance is good.
[0049] The furnace lining is all made of aluminum silicate refractory fiber felt. Aluminum silicate refractory fiber is a new fire-resistant and spill-retaining material developed in rec...
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