US 11,807,567 B2
Production of glass from a mixture comprising calcium oxide, and glass furnace
Herve Charles, Arques (FR); Jean-Marie Bonningues, Arques (FR); Sebastien Donze, Arques (FR); Francois Famchon, Arques (FR); and Xavier Ibled, Arques (FR)
Assigned to ARC FRANCE, Arques (FR)
Appl. No. 16/625,953
Filed by ARC FRANCE, Arques (FR)
PCT Filed Jun. 29, 2018, PCT No. PCT/FR2018/051626
§ 371(c)(1), (2) Date Dec. 23, 2019,
PCT Pub. No. WO2019/002802, PCT Pub. Date Jan. 3, 2019.
Claims priority of application No. 1756138 (FR), filed on Jun. 30, 2017.
Prior Publication US 2020/0156980 A1, May 21, 2020
Int. Cl. C03B 9/38 (2006.01); C03B 5/235 (2006.01); C03B 3/00 (2006.01); C03C 1/02 (2006.01)
CPC C03B 5/2353 (2013.01) [C03B 3/00 (2013.01); C03C 1/026 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A process for manufacturing glass comprising:
preparing a glass precursor mixture for a glassmaking furnace, in which water, sand and sodium carbonate are mixed in mass proportions of between more than 0 and 5%, 40% and 65%, and more than 0 and not more than 25%, respectively, and,
adding, after a delay of at least 10 minutes, calcium oxide in a mass proportion of between 1% and 20% of the total,
wherein the glass precursor mixture is prepared and the calcium oxide is added without supplying thermal energy.