Pressure control in direct smelting process

Details Pressure control in direct smelting process Pressure control in direct smelting process

2011-07-12

2011-07-12

Wyszomierski, George (Department: 1733)

Specialized metallurgical processes, compositions for use therei

Processes

Process control responsive to sensed condition

C075S444000, C075S532000, C075S548000

Reexamination Certificate

active

07976610

ABSTRACT:
A direct smelting process for producing molten metal from a metalliferous feed material in a direct smelting vessel is disclosed. The process includes using a stream of off-gas from the vessel as a fuel gas in (i) stoves for generating a hot blast of air or oxygen-enriched air for the process and (ii) a waste heat recovery apparatus for generating steam for the process. The process also includes controlling pressure in the vessel by controlling pressure in the off-gas stream while the process is producing molten metal.

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