Method of making and using ferrous metal particle briquettes
AssigneeAlternative Casting Technologies, LLC
InventorThomas A. Cobett
Life of this patent
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Abstract
Ferrous metal briquettes made from ferrous metal particles and an alkaline metal silicate, for adding to ferrous melts to recycle the particles.
Claims28
A method for making ferrous metal briquettes having ferrous metal particles bonded therein by an alkali metal silicate binder disposed throughout the briquettes comprising:
- preparing a mixture containing at least 80% by weight ferrous metal particles and a solution consisting of an aqueous alkali metal silicate solution;
- next shaping the mixture of ferrous metal particles and aqueous alkali metal silicate solution into unitary briquettes;
- and then curing the unitary briquettes to form a hardened unitary product containing the ferrous metal particles.
A method of recycling ferrous metal particles by first making ferrous metal briquettes at least 2″×2″×2″ in size, the briquettes having ferrous metal particles bonded therein by an alkali metal silicate binder by mixing the ferrous metal particles and an aqueous solution consisting of an alkali metal silicate, next shaping the mixture of the ferrous metal particles and alkali metal silicate solution into briquettes, then curing the briquettes to form a hardened unitary product containing the particles, storing the briquettes as desired, and then floating the unitary briquettes on a ferrous metal melt maintained at a temperature sufficiently high to release moisture from the briquettes into the atmosphere and to melt the ferrous metal particles within the briquettes into the melt.
Dependencies are inferred from the claim text.