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Three types of coal with the different melting temperature and ash content were burned under the condition of high-temperature air pulverized coal reaction. A water-cooled tube was inserted into the furnace to make the ash adhere. Particle size and composition distributions of ash particles in both reacting coal particles and depositing layer were analyzed, using a Computer Controlled Scanning Electron...
In the raceway of a blast furnace, part of the mineral matter in coal melts and/or vaporizes since high-temperature air exceeding 1273 K is supplied with coal. Under this condition, molten coal ash deposits on the coke surface in the region of relatively low temperature. When the molten coal ash deposits on coke lumps, they may agglomerate through the binding agency of the molten ash, while if the...
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