The current design for tuyeres with baffles in the body, will likely have zones of recirculation (eddies). The resulting flow regime results in a large pressure drop and poor convective cooling of the copper. With the loss of the nose cooling, extensive plastic deformation is likely, and a short time to failure of the body is expected. A copper tuyere design was developed to eliminate eddies in the body water cooling compartment. Pressure drop is reduced significantly, and convective cooling is improved leading to lower temperatures and stresses in the copper. In the event of the failure of the nose cooling pipe, the amount of plastic deformation is small, which should permit a longer operating time before requiring replacement of the tuyere.
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