Patent ID: 6383444
Filing Date: 2002-05-07
Classification: C21B,Y02P

Abstract:
An arrangement for reducing metalliferous ore comprising:a reduction reactor; a supply line for reduction gas and leading to the reduction reactor; a by-pass line departing from the supply line and rejoining the supply line a distance downstream along the path of the reduction gas from the departure of the by-pass line from the supply line; a combustion chamber in the by-pass line for oxidizing the first partial flow of the reduction gas; a control valve in the by-pass line; a gas sensor in the supply line; a control valve in the supply line downstream from the departure of the by-pass line; and a heat exchanger comprised of a non-iron base material located in the supply line downstream from the departure of the by-pass line, wherein the control valve and the heat exchanger are in the supply line located downstream from the departure of the by-pass line from the supply line and upstream of where the by-pass line and the supply line rejoin and upstream of where the rejoined supply line leads to the reduction reactor.