INCLINED HEAT PIPE LANCE OR TUYERE WITH CONTROLLABLE HEAT EXTRACTION

摘要

A heat pipe lance for conveying reagent materials into a metallurgical bath includes an elongated heat pipe vessel (7) defined by a tubular wall and a coolant liquid in the vessel (7) selected from a class of liquids including liquid sodium and liquid potassium. The heat pipe vessel (7) includes an evaporator section near a leading edge of the lance and a condenser section near the trailing end of the lance. The coolant liquid forms a liquid pool (16) in the evaporator section. A separate conduit (9) passes through at least a portion of the heat pipe vessel (7) at the evaporator section and is open to the leading edge of the lance to form a nozzle (14) for passing materials into the molten bath.