US2017009311A1PendingUtilityA1
Secondary material for steel refining
Assignee: KK KOBE SEIKO SHO ( KOBE STEEL LTD )Priority: Feb 6, 2014Filed: Feb 5, 2015Published: Jan 12, 2017
Est. expiryFeb 6, 2034(~7.5 yrs left)· nominal 20-yr term from priority
C22B 7/04C21C 1/025C22C 29/12C21C 7/0645Y02P10/20
27
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Claims
Abstract
A secondary material for steel refining is to be supplied to a molten iron together with a lime so as to promote a desulfurization reaction in the molten iron. The secondary material for steel refining contains aluminum nitride in an amount of 20 wt % or more in terms of weight percentage.
Claims
exact text as granted — not AI-modified1 . A secondary material for steel refining, which is to be supplied to a molten iron together with a lime so as to promote a desulfurization reaction in the molten iron, comprising aluminum nitride in an amount of 20 wt % or more in terms of weight percentage.
2 . The secondary material for steel refining according to claim 1 , comprising metallic aluminum in an amount of 10 wt % or less.
3 . The secondary material for steel refining according to claim 1 , comprising silicon dioxide in an amount of 2 wt % or less.
4 . The secondary material for steel refining according to claim 1 , which is produced from an aluminum dross processed in an arc furnace.
5 . The secondary material for steel refining according to claim 2 , comprising the metallic aluminum in an amount of 0 wt % or more and 10 wt % or less and an aluminum oxide in an amount of 80 wt % or less.
6 . The secondary material for steel refining according to claim 2 , comprising silicon dioxide in an amount of 2 wt % or less.Join the waitlist — get patent alerts
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