Method for forming products from a flue gas desulfurization by-product and products formed thereby

Abstract

Compositions and methods for producing a manufactured product, a method for making a liquid absorbent, and processes for disposal of flammable liquids with a flue gas desulfurization by-product. The compositions for the manufactured products combine a binder and the by-product. The composition contains a greater percentage by weight of the by-product than the binder. The methods for producing manufactured products include dewatering the gypsum-depleted waste stream to reduce a water content, and forming the manufactured product. The method for making a liquid absorbent includes dewatering, granulating, drying, heating, and packaging a granulated gypsum-depleted composition as the liquid absorbent. The processes for disposal of flammable liquids include distributing a by-product into contact with flammable liquid, absorbing the liquid, transporting, and igniting the flammable liquid. The artificial soils are a combination of by-product and animal waste, human waste, or another bio-solid.

What is claimed is: 
     
         1 . A fire resistant sheet comprising:
 a mixture of a gypsum-depleted by-product and cement.   
     
     
         2 . The fire resistant sheet of  claim 1 , wherein the gypsum is added in the form of a gypsum-depleted by-product. 
     
     
         3 . The fire resistant sheet of  claim 2 , wherein the gypsum-depleted by-product contains less than about 75 wt. % gypsum. 
     
     
         4 . The fire resistant sheet of  claim 2 , wherein a volume of the gypsum-depleted by-product is about twice a volume of the cement. 
     
     
         5 . The fire resistant sheet of  claim 1 , further comprising:
 a glass fiber reinforcement.   
     
     
         6 . The fire resistant sheet of  claim 1 , wherein the cement is Portland cement. 
     
     
         7 . The fire resistant sheet of  claim 1  having a dimensions of about 4 feet by 8 feet by ⅝ inch. 
     
     
         8 . A method of manufacturing a fire resistant sheet comprising:
 mixing a gypsum-depleted by-product and cement;   forming the mixture into a sheet; and   heating the sheet to a temperature sufficient to remove moisture.   
     
     
         9 . The method of  claim 8 , wherein mixing includes mixing about twice a volume of the gypsum-depleted by-product to a volume of the cement. 
     
     
         10 . The method of  claim 8 , wherein heating includes heating the sheet to about 365° F.