Importance

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Abstract

An arrangement for heating a process gas of an iron ore pelletizing plant, including a heating chamber including a gas inlet, a gas outlet, a wall extending from the gas inlet to the gas outlet, and a heating chamber port arranged in the wall at a point intermediate to the process gas inlet and the process gas outlet, a burner assembly connectible to a source of gaseous fuel and a source of oxidant gas, and a precombustion chamber. The precombustion chamber includes a burner port and a wall extending from the burner port to the heating chamber port. The burner assembly is arranged in the burner port of the precombustion chamber and, in operation, the burner assembly introduces the gaseous fuel, the oxidant gas and/or combustion products thereof into the precombustion chamber. The burner assembly includes a fuel lance, wherein a nozzle of the fuel lance includes outlet holes, and wherein at least one of the outlet holes is arranged at an angle relative to a longitudinal axis of the fuel lance.

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First Claim