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US 11,905,463 B2Granted
Process for producing proppants
AssigneeRalph Enderle
InventorsNatalia Schwamm, Ralph Enderle
Life of this patent
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Abstract
The invention relates to a process for producing proppants, including the following steps: providing red mud, providing fly ash, producing a mixture from the red mud and the fly ash so that the mixture has a first moisture content in the range of 7 to 30 wt. %, producing a granular product from the mixture, and sintering the granular product.
Claims14
A process for producing proppants, comprising the following steps:
- providing red mud,
- providing fly ash,
- producing a mixture from the red mud and the fly ash so that the mixture has a first moisture content in a range of 7 to 30 wt. %,
- producing a granular product from the mixture,
- calcining the granular product at a temperature of 700° C. to 1,050° C., and then
- sintering the granular product calcined, at a temperature in a range of 1,050° C. to 1,300° C.
3 more elements
Dependencies are inferred from the claim text.