Production of foamed sand using near infrared
US12077474B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 5, 2023 |
| Grant date | Sep 3, 2024 |
| Priority date | — |
| Expiry date | Oct 5, 2043 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2219/0879
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An arrangement 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. The arrangement includes NIR halogen radiators for generating a NIR radiation field of radiation with an active component in a near infrared, NIR, range having a wavelength in a range between 0.8 μm and 1.5 μm and which has a power density of at least 50 kW/m2 for thermally treating the basic particles, a conveying device for transporting a layer or stream of the bed of basic particles through the radiation field, and a controller that controls heating of the bed of basic particles such that a maximum temperature in the layer or stream is in a temperature range between 600 and 1500° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.