A process for reacting in a fluid bed reactor at least one oxidizable reactant with molecular oxygen in the presence of a catalytically active fluidized bed of solid particles. In the present invention, with designs of entering air twice, feeding coal at two inlets, two separations and circulations of powder coal, the temperature of gasification agent when fed into the producer could reach 750\xb0 C. Also disclosed are: a recording tape cartridge housing such a tape reel; a take-up reel provided in a drive device; a drawing-out member, housed in the hub of a take-up reel and on which recording tape drawn-out from a recording tape cartridge is wound; and a drive device with take-up reel and drawing-out member.