Abstract: A clean dry white glass powder useful as a substitute for Portland cement in concrete, in paints, and for other known uses for glass powder produced conventionally can be produced from unsorted post-consumer waste glass, including a substantial fraction of non-glass items, by employing glass pulverizing equipment to reduce waste glass to small fragments, allowing removal of trash, employing a multistep washing process to clean the glass fragments, in the preferred embodiment using aggregate cleaning equipment, drying the fragments, preferably using fluidized bed techniques, and grinding the glass to a desired particle size, preferably using a ball mill, in combination with an air classification step to produce a bright white glass powder of uniform particle size.
Type:
Grant
Filed:
May 15, 2008
Date of Patent:
April 26, 2011
Assignee:
Empire Resource Recovery, LLC
Inventors:
Louis P. Grasso, Jr., Louis P. Grasso, Sr., Patrick S. Grasso, Sr., Elliot Kracko, Cynthia A. Andela
Abstract: A clean dry glass powder useful as a substitute for Portland cement in concrete, in paints, and for other known uses for glass powder produced conventionally can be produced from unsorted post-consumer waste glass, including a substantial fraction of non-glass items, by employing glass pulverizing equipment to reduce waste glass to small fragments, allowing removal of trash, employing a multistep washing process to clean the glass fragments, in the preferred embodiment using aggregate cleaning equipment, drying the fragments, preferably using fluidized bed techniques, and grinding the glass to a desired particle size, preferably using a ball mill, in combination with an air classification step to produce a glass powder of uniform particle size.
Type:
Grant
Filed:
August 8, 2008
Date of Patent:
August 17, 2010
Assignee:
Empire Resource Recovery LLC
Inventors:
Louis P. Grasso, Jr., Louis P. Grasso, Sr., Patrick S. Grasso, Sr., Elliot Kracko, Cynthia A. Andela, Ralph J. Acampora
Abstract: A clean dry glass powder useful as a substitute for Portland cement in concrete, in paints, and for other known uses for glass powder produced conventionally can be produced from unsorted post-consumer waste glass, including a subsatantial fraction of non-glass items, by employing glass pulverizing equipment to reduce waste glass to small fragments, allowing removal of trash, employing a multistep washing process to clean the glass fragments, in the preferred embodiment using aggregate cleaning equipment, drying the fragments, preferably using fluidized bed techniques, and grinding the glass to a desired particle size, preferably using a ball mill, in combination with an air classification step to produce a glass powder of uniform particle size.
Type:
Grant
Filed:
December 16, 2004
Date of Patent:
August 19, 2008
Assignee:
Empire Resource Recovery LLC
Inventors:
Louis P. Grasso, Jr., Louis P. Grasso, Sr., Patrick S. Grasso, Sr., Elliot Kracko, Cynthia A. Andela, Ralph J. Acampora