Vitreous spheres of slag and slag-like materials and underground proppants
Vitreous slag and slag-like materials are used as underground proppants, as packing material for chemical reaction chambers, as porous load-supporting beds, as corrosion resistant rollers, and for various other purposes. Blast furnace slags have a generally spherical shape with compression strength in excess of 15,000 psi and as high as 150,000 psi. These spheres can be produced by heating a bath of slag or slag-like material to a temperature of about 200/sup 0/C above the melting point but at a temperature such that the bubbling of gas in the vitreous material has either not begun or else has ceased. The material is then quenched in a fluid at a temperature below about 500/sup 0/C. The spheres are resistant to chemical attack at temperatures up to about 250$C.
- Assignee:
- TUL; EDB-81-043511
- Patent Number(s):
- US 3245866
- OSTI ID:
- 6625190
- Resource Relation:
- Patent File Date: Filed date 24 Jan 1961
- Country of Publication:
- United States
- Language:
- English
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