Production of foamed sand using near infrared
US11814319B2 · kind B2 · utility
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5References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 24, 2018 |
| Grant date | Nov 14, 2023 |
| Priority date | — |
| Expiry date | Sep 28, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2219/0879
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for producing a bulk material consisting substantially of foamed or blown mineral or oxide particles by thermal treatment of a bulk material of basic particles, characterized in that the thermal treatment includes transport of a transversely conveyed or horizontal layer or of a free flow of the bulk material through a radiation field, the substantial active component of which lies in the near infrared range (NIR), and which has a power density of at least 50 kW/m2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.