KHIA headerKnow-How in Action

VOL XXXII, NO 57

Belzona® Repairs And Protects Screw Conveyor

 
 

Industry:

Water / Wastewater (WATR)

 
 

Application:

Solids Handling Machinery (SHM)

 
 

Customer Location:

Wastewater Treatment Plant, Bialystok Poland

 
 

Application Date:

July 2014

 
 

Application Situation:

Sludge screw conveyor.

 
 

Problem:

The new screw conveyor suffered surprisingly fast wear by erosion and bi-metallic corrosion. The shaft of the screw conveyor had been topped with a stainless steel sheet to protect it from corrosion. However, after less than a year of operation the steel was worn from the surface of the shaft. In addition to the aggression of chemical sludge, it reaches a very high temperature of approx. 120 degrees Celsius.

 
 

Products:

Belzona 1511 (Super HT-Metal)

Belzona 9811

Belzona 1813

 

Substrate:

Steel

 
 

Application Method:

The application was carried out in accordance with Belzona System leaflet SHM-14. The surface of the shaft was blasted and Belzona 9811 tiles were bonded to the surface of the shaft using Belzona 1511. The tiles were grouted using Belzona 1813. 

 
 

Belzona Facts:

The Belzona solution eliminated the problem of galvanic corrosion and increased the durability of the screw conveyor. With Belzona the life time is three times longer than the original solution. 

 
 

Photographs Description

1.Screw conveyor before application

2.Visible effects of galvanic corrosion

3.Application of Belzona 9811 and Belzona 1511

4.View after grouting with Belzona 1813

 
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