Patent ID: 7581948

Claim:
A fiber attenuation burner comprising: a refractory burner block for fluid connection with sources of primary oxidant and fuel, the refractory burner block having a fuel and primary oxidant entrance end and a flame exit end, the flame exit end having a substantially rectangular flame exit having a width greater than its height for producing a high velocity fiber attenuation flame, the refractory burner block defining an internal combustion chamber and a slot through the burner block fluidly connecting the internal combustion chamber and the flame exit, the slot having a height and width substantially the same as the flame exit, the combustion chamber height substantially greater than the height of the slot; and an oxygen manifold fluidly connected to the combustion chamber for routing a gas with an oxygen molar concentration of at least 50% to the internal combustion chamber, the oxygen manifold comprising an upper manifold and a lower manifold each having a plurality of holes therein for accepting first ends of a corresponding plurality of tubes, each one of the tubes extending through a corresponding one of a plurality of non-horizontal passages through the refractory burner block, the non-horizontal passages extending trough the refractory burner block at positions intermediate the fuel arid primary oxidant entrance end and the flame exit end.