Methods for converting solid waste and low-value local materials into useful engineered products such as proppant
US10934476B1 · kind B1 · utility
1Cited by
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32Claims
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Inventors
Key dates
| Filing date | Feb 8, 2018 |
| Grant date | Mar 2, 2021 |
| Priority date | — |
| Expiry date | May 30, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB09B3/27
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A waste material improvement and reuse method involves identifying an available material having a crush resistance that does not meet a requirement for use as proppant, but which can be improved to meet the requirement, and modifying a surface of the available material to improve the crush resistance to meet the requirement by applying a binding agent and/or an encapsulating agent to the available material, forming clumps of particles of the available material and increasing crush resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.