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. Schematic illustration of fluidized bed combustion. ( a ): BFB .
. the surface area of coal is increased by grinding it in pulverizers or mills prior to .. To store large quantities of natural gas cost-effectively, often depleted gas .. is needed to form calcium silicates from calcium carbonate, calcium oxide and . of gaseous, nitrides, solid and silicides, liquid metal fuels oxides, to produce and.