Tuyere gas insufflation for refining a molten metal, its manufacture and its use

A.TUYERE INSUFFLATION GAS. B.ELLE IS MADE BY MOLDING SUBSTANCE NON POROUS PRESSURE AND SIMULTANEOUS IMPLEMENTATION OF A NUMBER OF ELEMENTS 17 PASSAGES TRAINING THEM 3 WILLING TO INTERVAL DETERMINED. HOLES PASSAGES HAVE SHAPED SECTION FOR RIGHT TO CONTROL WITH PRECISION The INSUFFLATION GAS TO PERFORM THE OPERATION OF REFINING THE DESIRE MOLTEN METAL C.Application. STEEL MAKING IN A CONVERTER.