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Application filed by Praxair Technology IncfiledCriticalPraxair Technology Inc
Priority to MYPI9803401priorityCriticalpatent/MY117418A/en
Publication of MY117418ApublicationCriticalpatent/MY117418A/en
Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces
(AREA)
Abstract
A METHOD FOR EFFECTIVELY PROVIDING MAIN GAS INTO A POOL OF MOLTEN METAL, WHICH IS PARTICULARLY USEFUL FOR USE IN AN ELECTRIC ARC FURNACE. THE METHOD EMPLOYS COMBUSTION OF SECONDARY OXYGEN WITH FUELTO FORM A FLAME ENVELOPE AROUND A MAIN GAS STREAM WHICH PROTECTS THE MAIN GAS FROM ENTRAIMENT OF AMBIENT GASES AS IT PASSES THROUGH THE HEADSPACE OF THE FURNACE. THIS ENABLES THE GAS TO RETAIN TO A SUBSTANTIAL DEGREE ITS ORIGINAL FORCE OPEN INJECTION INTO THE HEADSPACE AND THUS MAY BE INJECTED INTO THE FURNACE AT A SAFE DISTANCE FROM THE MOLTEN METAL SURFACE WHILE STILL ACHIEVING SUBSTANTIALLY COMPLETE PENETRATION INTO THE MOLTEN METAL.
MYPI98034011998-07-241998-07-24Lance/burner for molten metal furnace
MY117418A
(en)