Spanish text to speech: from prosody to acoustic

A bottom-blow converter for use in refining pig iron to make steel comprises a steel jacket with a refractory lining and an inserted bottom containing blowing nozzles. Each of the blowing nozzles is arranged to blow a jet of oxygen surrounded by a sheath of jacket gas into the melt. The nozzles are all circumferentially inclined in the same direction as each other with respect to the longitudinal axis of the converter and they are so arranged that the jets of oxygen and jacket gas which issue from them cause the melt to circulate both about the upright longitudinal axis of the converter and about a horizontal axis normal to this longitudinal axis so that the movement of the melt is the resultant of these two components of movement.