Appeal No. 96-1003 Application No. 08/115,791 particles into the reducing zone from the oxidizing zone to heat the reducing zone; and (f) separating inert particles which pass out of the gas discharge opening with the gas from the gas, and returning the separated inert particles to the oxidizing zone. -3-Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 NextLast modified: November 3, 2007