Production of foamed sand using near infrared
AssigneeThermProTEC GmbH
InventorRainer Gaus
Life of this patent
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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.
Claims7
An arrangement for producing a bulk material essentially from foamed or blown mineral or oxidic particles by thermal treatment of a bed of basic particles, the arrangement comprising:
- a flat arrangement of NIR halogen radiators for generating a NIR radiation field of radiation whose essential active component is 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 in the stream is in a temperature range between 600 and 1500° C.
Dependencies are inferred from the claim text.