Method for production of proppants
US9394477B2 · kind B2 · utility
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1References
14Claims
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Assignee
Inventors
Key dates
| Filing date | Feb 29, 2012 |
| Grant date | Jul 19, 2016 |
| Priority date | — |
| Expiry date | Feb 29, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2982
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Disclosed is an apparatus and method for producing frac sand, in order to meet size, sphericity and roundness standards, from a feedstock such as natural sand. The feedstock is rotated as slurry in a conditioning cell, so that it self abrades to produce frac sand with the required characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.