KHIA headerKnow-How in Action

VOL XXXI, NO 98

Belzona® Protected Submersible Sludge Pump Six Years On

 
 

Industry:

Pulp & Paper (PLPR)

 
 

Application:

Centrifugal Pumps (CEP)

 
 

Customer Location:

Paper Mill, Italy

 
 

Application Date:

June 2016

 
 

Application Situation:

Casing and components of a submersible sludge pump.

 
 

Problem:

Previously the pump only lasted two years in service before requiring major overhaul. Originally coated in 2010 with Belzona, after six years of uninterrupted service, the customer opened the pump for mechanical maintenance. Belzona coating was found to be in excellent condition but it was decided to refresh the Belzona protection to prepare the pump for more years of service in sludge.

 
 

Products:

Belzona 1311 (Ceramic R-Metal)

Belzona 1321 (Ceramic S-Metal)

Belzona 5811 (Immersion Grade)

 

Substrate:

Cast Iron

 
 

Application Method:

The application was carried out in accordance with Belzona Know-How System Leaflets CEP-1, CEP-3 and CEP-4. The coating applied in 2010 was roughened and the new coating was applied on top.

 
 

Belzona Facts:

Throughout its six-year service life, the pump faced zero downtime due to Belzona erosion-corrosion protection.

 
 

Photographs Description

  1. Internals after six years in service
  2. Casing after six years in service
  3. Impeller recoated in 2016
  4. Casing and internals recoated in 2016
 
Case study pic one

 

 
 Case study pic two

 

 
 Case study pic three

 

 
 Case study pic four

 

 
 
For more information about Belzona visit: www.belzona.com