Solar reflective granules and processes for producing same

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United States of America Patent

PATENT NO 11846098
APP PUB NO 20200407975A1
SERIAL NO

16911073

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Abstract

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A reflective particulate material includes a particulate substrate having high total solar reflectance, bulk and apparent densities and toughness, and a low dust index. The reflective particulate can have a total solar reflectance of 80% to 87%, a toughness of 1% or fewer fines, an apparent density of 2.75 g/cm3 or greater, and a dust index of 1 or lower. A method of manufacturing the reflective particulate material includes preparing a slurry of the particulate substrate, spray drying the slurry to form a spray dried particulate, crushing the spray dried particulate to form a crushed particulate, and heating/calcining the crushed particulate. The heated, crushed particulate may further be coated to form a coated roofing granule.

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Patent Owner(s)

Patent OwnerAddress
US SILICA COMPANY24275 KATY FREEWAY KATY TX 77494

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Smith, Rocky Lee Needmore, US 5 14

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