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VOL XXII, NO 164

Belzona® Repairs Cyclone Inlet

 
 

Industry:

Pulp & Paper (PLPR)

 
 

Application:

Solids Handling Machinery (SHM)

 
 

Customer Location:

Paper Mill, Michigan U.S.A.

 
 

Application Date:

October 2008

 
 

Application Situation:

 The pulp cyclone removes scrap metal, stones, glass and other heavy abrasive debris from the pulp prior to screening.

 
 

Problem:

The inlet to the pulp cyclone showed severe erosion corrosion after only 8 months of service. It had already been patched once and had holed through again.

 
 

Products:

Belzona® 1812 (Ceramic Carbide FP)
Belzona® 1321 (Ceramic S Metal)
 

Substrate:

Cast Iron

 
 

Application Method:

Application carried out in accordance with Belzona Know-How System Leaflet SHM-11. A polycarbonate flange form was bolted on the casting and Belzona® 1812 applied to fill the eroded shell and rebuild the damaged flange area. The interior was coated with Belzona® 1321 to provide a smooth the surface and the flange form was removed.

 
 

Belzona Facts:

A replacement fitting was quoted at $25,000 and six weeks delivery. The Belzona material used in this repair cost less than $2,000. When the fitting currently in use is replaced by this fitting, it too will be repaired with Belzona abrasion resistant lining. The mill thus has a low cost durable back-up part ready for service.

 
 

Photographs Description

  1. The fitting in the repair area
  2. Flange form installed. Internal damage evident
  3. Belzona® 1321 being applied over the Belzona® 1812
  4. Completed repair
 
 
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For more information about Belzona visit: www.belzona.com