Abstract Slag recovered from a previous electroslag remelting of a metal or similar thereto is dried and ground into a fine powder and then mixed with a metal to be added to an electroslag melt, e.g., of steel, in order to alloy it or deoxidize it. The mixture is formed into granules having a density closer to that of the slag than to that of the metallic component from which the granules were formed. These granules can even be lighter than the slag in the melt, so that when added they float thereon. Thus, when the granules are charged onto the melt they spend a relatively long time in contact with the relatively hot slag so that their nonmetallic component is absorbed into the slag while their metallic component is slowly released and thereby afforded sufficient time to heat up and react with the slag or to melt completely before passing into the body of molten metal udner the slag.
Inventors
👤 P Metz
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-11-03 06:26
CPC Classifications
C; C22; C22B; C22B9/00; C22B9/16; C22B9/18
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
18 words
The method defined in claim 1 wherein said non-metallic composition consists essentially of fluorides, oxides, or mixtures thereof.
Claim 2
Dependent Claim
17 words
The method defined in claim 1 wherein said metal is reactable with the slag on said melt.
Claim 3
Dependent Claim
19 words
The method defined in claim 1 wherein said metal passes through said slag and into said melt after fusion.
Claim 4
Dependent Claim
55 words
An additive for treatment of a slag-covered metal melt comprising granules of a compacted mixture of finely divided metallic component and a nonmetallic component, said granules having an overall density substantially less than that of said metallic component between 3.2 g/cm3 and 6.5 g/cm3 and corresponding generally to that of the slag on said melt.
Claim 5
Independent Claim
77 words
A method of smelting a metal comprising the steps of: forming a slag-covered melt; recovering slag from a previous but similar melt and converting same into a dry nonmetallic powder; mixing said powder with a metallic powder; forming granules from the powder mixture with a density substantially lower than that of said metallic powder; charging said granules onto said melt; and heating said granules with said slag to fuse said nonmetallic powder and free said metallic powder.
Claim 6
Dependent Claim
24 words
The method defined in claim 6 wherein said granules are formed with a density corresponding generally to that of the slag on said melt.