GAS FLOW CONTROL METHOD AND APPARATUS FOR METALLURGICAL VESSELS

摘要

GAS FLOW CONTROL METHOD AND APPARATUS FOR METALLURGICAL VESSELS A method and apparatus for controlling the flow of process gases to the tuyeres of a metallurgical vessel provides for simultaneous injection of various gases through multiple tuyere passages. Gas flow controls are provided for controlling the proportions of gases simultaneously injected into the vessel and for controlling gas sequencing and switching operations. Pressure sensors are provided for monitoring the pressures of the gases delivered through the tuyeres for automatically initiating a switch-over to alternate pressurized gas sources in the event that the currently operating pressurized gas supply fails.