Grate covering

Abstract

A grate covering for an incineration grate of an incineration furnace having a combustion chamber, includes a plurality of metal grate bars, each having a surface facing the combustion chamber that includes a layer made of a temperature-resistant, corrosion-resistant and abrasion-resistant non-metallic material, wherein a thickness of the layer is minimally sufficient to bear pressure and thrust loading. The thickness of the layer is about 10 mm to 15 mm. For a forward feed grate, the layer on each metal grate bar is present only in a zone of contact with an adjacent metal grate bar, and for a roller grate, and wherein the layer is present on the entire surface facing the combustion chamber.

1 - 10 . (canceled)  
   
   
       11 . A grate covering for an incineration grate of an incineration furnace having a combustion chamber, the grate covering comprising: 
 a plurality of metal grate bars, each having a surface facing the combustion chamber that includes a layer made of a temperature-resistant, corrosion-resistant and abrasion-resistant non-metallic material, wherein a thickness of the layer is minimally sufficient to bear pressure and thrust loading.    
   
   
       12 . The grate covering as recited in  claim 11 , wherein the thickness of the layer is about 10 mm to 15 mm.  
   
   
       13 . The grate covering as recited in  claim 11 , wherein the incineration grate is a forward feed grate, wherein the plurality of metal grate bars includes adjacent metal grate bars in moveable contact with one another, and wherein the layer on each metal grate bar is present only in a zone of contact with an adjacent metal grate bar.  
   
   
       14 . The grate covering as recited in  claim 11 , wherein the incineration grate is a roller grate, and wherein the layer is present on the entire surface facing the combustion chamber.  
   
   
       15 . The grate covering as recited in  claim 11 , wherein the layer is attached to each of the metal grate bars by means of an adhesive bond.  
   
   
       16 . The grate covering as recited in  claim 11 , wherein the layer is cemented into each of the metal grate bars.  
   
   
       17 . The grate covering as recited in  claim 11 , wherein the layer is connected to each of the metal grate bars by means of a mechanical joint.  
   
   
       18 . The grate covering as recited in  claim 17 , wherein the mechanical joint is a countersunk screwed connection.  
   
   
       19 . The grate covering as recited in  claim 11 , wherein the non-metallic material is a ceramic material.  
   
   
       20 . The grate covering as recited in  claim 11 , wherein a circumference of the layer is delimited by a metal web formed at an edge of each metal grate bar.  
   
   
       21 . The grate covering as recited in  claim 20 , wherein the web has a rectangular contour.  
   
   
       22 . The grate covering as recited in  claim 20 , wherein the web has a slanted contour that widens in a direction of the surface.  
   
   
       23 . The grate covering as recited in  claim 11 , wherein the layer includes several segments.