Furnace residue cleaning method

Abstract

A furnace residue washing method includes collecting residue from a furnace, cooling the residue by water and screening the residue by different dimension scales, separating the screened residue by different iron contents, separating and depositing sand from the cooling water, crushing the screened residue of large dimension scale, separating the screened residue of large dimension scale by different iron contents and recollecting separately the separated and screened residue of large dimension scale.

1 . A furnace residue washing method comprising the steps of: 
 collecting residue from a furnace;    cooling the residue by water and screening the residue by different dimension sieves;    separating the screened residue into different iron contents by magnetism;    separating and depositing sand from the water;    crushing the screened residue of large dimension scale;    separating the screened residue of large dimension scale by different iron contents by magnetism; and    recollecting separately the separated and screened residue of large dimension scale.    
   
   
       2 . The method as claimed in  claim 1 , wherein a sprinkling system is provided in the screening step to provide water to cool the residue from the furnace.  
   
   
       3 . The method as claimed in  claim 1 , wherein the residue is screened into separated groups to respectively have dimensions of above 30 mm, between 12-30 mm, between 8-12 mm and below 8 mm.  
   
   
       4 . The method as claimed in  claim 2 , wherein the residue is screened into separated groups to respectively have dimensions of above 30 mm, between 12-30 mm, between 8-12 mm and below 8 mm.  
   
   
       5 . The method as claimed in  claim 1 , wherein after the water is supplied, lime powder is washed from the residue and mixed with the water.  
   
   
       6 . The method as claimed in  claim 4 , wherein after the water is supplied, lime powder is washed from the residue and mixed with the water.  
   
   
       7 . The method as claimed in  claim 6 , wherein the water is recycled in a water tank.  
   
   
       8 . The method as claimed in  claim 1 , wherein a grinding device is provided to refine the recollected residue.  
   
   
       9 . The method as claimed in  claim 2 , wherein a grinding device is provided to refine the recollected residue.  
   
   
       10 . The method as claimed in  claim 3 , wherein a grinding device is provided to refine the recollected residue.  
   
   
       11 . The method as claimed in  claim 4 , wherein a grinding device is provided to refine the recollected residue.  
   
   
       12 . The method as claimed in  claim 5 , wherein a grinding device is provided to refine the recollected residue.  
   
   
       13 . The method as claimed in  claim 6 , wherein a grinding device is provided to refine the recollected residue.  
   
   
       14 . The method as claimed in  claim 7 , wherein a grinding device is provided to refine the recollected residue.