News

Metals Used In Coal Crushers

May 26, 2020 As of 2012, according to the American Coal Ash Association (ACAA) data, approximately 50 percent of the CCRs beneficially used on an annual basis falls into two categories: 1) fly ash used as a direct substitute for Portland cement during the production of concrete (referred to as fly ash concrete ); and 2) FGD gypsum used as a replacement for mined gypsum in wallboard (referred to as …