PATENT

3280. ----- [SCHMALFELDT, H.AND WINTERSHALL A. G.]  Apparatus and Methods for Gasifying Powdered Fuel.  British Patent 453,547, Sept. 14, 1936.  Chem. Abs., vol. 31, 1937, p. 1590.

Circulating gas is produced in the process and heated in a heater wherein the discharged gas is utilized to predry the original fuel fed into the gas stream from a hopper, the drying gas being charged with the completely or partly gasified dust.