Method of making rod-shaped particles for use as proppant and anti-flowback additive
US10557079B2 · kind B2 · utility
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9References
12Claims
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Key dates
| Filing date | Jul 22, 2016 |
| Grant date | Feb 11, 2020 |
| Priority date | — |
| Expiry date | Aug 27, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/94
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for forming rod-shaped particles includes reducing a length of rods derived from a slurry made up of particles and a reactant, wherein the rods are in a stabilized state in which the reactant has been at least partially reacted with a coagulant, but the rods have not been sintered, and subsequently sintering the reduced length stabilized rods. The reducing the length of the stabilized rods includes subjecting the stabilized rods to mechanical vibration applied by a device, or feeding the stabilized rods through a device having a rotating cutting mechanism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.