US 11,851,882 B2
Ceramic granules with high UV opacity and high solar reflectance
Zhijie Li, Shijiazhuang (CN); and Hongwei Lu, Shijiazhuang (CN)
Assigned to SHIJIAZHUANG NIKKA MINTECH CO., LTD., Hebei (CN)
Filed by SHIJIAZHUANG NIKKA MINTECH CO., LTD., Shijiazhuang (CN)
Filed on Mar. 5, 2021, as Appl. No. 17/194,184.
Application 17/194,184 is a continuation of application No. 16/124,058, filed on Sep. 6, 2018, granted, now 10,968,632.
Prior Publication US 2021/0189729 A1, Jun. 24, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. E04D 1/04 (2006.01); C04B 35/626 (2006.01); E04D 1/00 (2006.01); C04B 111/80 (2006.01)
CPC E04D 1/04 (2013.01) [C04B 35/62695 (2013.01); C04B 2111/80 (2013.01); E04D 2001/005 (2013.01)] 18 Claims
OG exemplary drawing
 
1. Ceramic granules having a high UV opacity and high solar reflectance, produced by forming a calcined clay mineral powder into a green body and re-calcining the green body at a temperature of from 1100-1400° C. and crushing the calcined material, wherein the ceramic granules obtained by the crushing step are characterized by:
≥97% crystalline content;
90-100% UV opacity; and
a solar reflectance of between 82% and 90%.