Abrasion protection for sludge screw conveyor

KHIA ID: 8844

Industry: Water / Wastewater (WATR)
Application: SHM-Solids Handling Machinery (SHM)
Substrate: Carbon Steel

Customer Location: Glasgow, Scotland
Application Date: June 2022

Products:
Belzona 1812 (Ceramic Carbide FP)

Problem: The bare steel had a short life expectancy in service. The sludge being transported by this screw was not only highly abrasive but also corrosive - these corrosive conditions would shorten the life of many abrasion resistant metal overlays.

Photograph Descriptions

1 - Screw conveyor before

2 - Screw during application

3 - Belzona 1812 close up

4 - Belzona 1812 close up

Application Situation

A screw conveyor transporting waste sludge was suffering from abrasion & corrosion in service. A new screw conveyor was fabricated - heavy abrasion & corrosion resistance were required to extend its service life.

Application Method

The screw conveyor was first grit blasted to SA 2.5 cleanliness & 75 microns profile. The Belzona 1812 (Ceramic Carbide FP) was then built up on the drive flights & the shaft body.
This was applied in accordance with Belzona system leaflet SHM-14.

Belzona Facts

By lining these screw conveyors with Belzona 1812 the life of the screw conveyor is greatly extended.

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