Optimization of the Separation of Unburned Coal from a Selected Fly Ash
Unburned coal grains often hinder the economic utilization of fly ash and also represent energy loss of the fuel. This paper addresses the possibility of separating unburned coal from a selected fly ash with typical mineralogical and chemical characteristics. To assess the possibility of separating the unburned coal, the analysis of the grain density and composition of ash was used. The unburned coal was separated using one wet gravity and three dry methods. The highest amount of unburned coal, 62% in the concentrate, was obtained using the fluidized bed method with separation. The largest weight yield of concentrate equal to 17.8% was obtained using the electrostatic method.
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Posted 18 Sep, 2020
Optimization of the Separation of Unburned Coal from a Selected Fly Ash
Posted 18 Sep, 2020
Unburned coal grains often hinder the economic utilization of fly ash and also represent energy loss of the fuel. This paper addresses the possibility of separating unburned coal from a selected fly ash with typical mineralogical and chemical characteristics. To assess the possibility of separating the unburned coal, the analysis of the grain density and composition of ash was used. The unburned coal was separated using one wet gravity and three dry methods. The highest amount of unburned coal, 62% in the concentrate, was obtained using the fluidized bed method with separation. The largest weight yield of concentrate equal to 17.8% was obtained using the electrostatic method.
Figure 1
Figure 2