US 12,391,598 B2
Production of glass sand
Cynthia Andela, Richfield Springs, NY (US); and David Martin, N. Andover, MA (US)
Filed by Cynthia Andela, Richfield Springs, NY (US); and David Martin, N. Andover, MA (US)
Filed on Mar. 4, 2022, as Appl. No. 17/803,144.
Prior Publication US 2023/0278908 A1, Sep. 7, 2023
Int. Cl. C03C 1/00 (2006.01); B03B 9/06 (2006.01); B03C 1/30 (2006.01)
CPC C03C 1/002 (2013.01) [B03B 9/062 (2013.01); B03C 1/30 (2013.01); B03C 2201/20 (2013.01); Y02W 30/52 (2015.05); Y02W 30/60 (2015.05)] 9 Claims
OG exemplary drawing
 
1. A system for producing glass sand from a stream of mixed recycled material, comprising:
a first pulverizing system, comprising a surge hopper, a pulverizer and a trommel, for performing first size-reduction and size-separation steps;
a second pulverizing system, comprising a pulverizer and a trommel, for performing second size-reduction and size-separation steps;
a conveyor connecting said first and second pulverizing systems; and
a burner for providing heated air to said pulverizers and trommels,
whereby said pulverizers and trommels also serve as dryers.