Resistance to wear from particles in moving gas or from sliding solids, the property that sets lining life in FCC units, cyclones, cement preheaters, coal injection and kiln feed zones. The standard ASTM C704 test blasts 1 kg of silicon carbide grit at a sample with compressed air and reports volume lost in cubic centimetres. Good erosion-resistant linings lose single-digit cc, while ordinary castables lose far more.
Abrasion resistance on the new erosion mix is 4 cc on the C704, the old one was 9, put it in the riser.
Also heard as
- erosion resistance
- C704
- abrasion loss
Related terms
Hex mesh
Hexagonal steel grid welded to a shell to hold thin erosion-resistant linings, mainly in refinery cyclones.
Silicon carbide
Hard, highly conductive refractory used where abrasion, thermal shock and heat transfer all matter.
Low-cement castable
Dense castable with 1 to 2.5 percent lime from cement, using micro-fines and dispersants for strength and low porosity.