Application Stories

Weartech SHS: Extend Rotary Vane Feeder Drum Life

Weartech® SHS™ Coating and Overlay Wear Plate
Extend Rotary Vane Feeder Drum Life by 200%

 

PROBLEM: EROSION AND CORROSION
Rotary vane feeders in cement plants deliver material in process to the next station. Components inside rotary vane feeders operate in a high temperature environment and wear quickly from exposure to sliding abrasion, fine particle erosion and corrosion.

Vane pockets on a rotating drum inside the rotary vane feeder are fabricated from unprotected steel and not sufficiently resistant to sliding abrasion, fine particle erosion and corrosion. During service, surface material loss on the vane pockets from wear and corrosion is severe and the drum requires replacement after 6 months. Industrial centrifugal blowers in cement plants provide ventilation of hot gases (≤ 500°C) rich with fine particle dust expelled from high temperature environments inside preheat towers clinker ovens and clinker coolers. At a cement plant in South America, blower fan blades mounted inside a pair of discs are fabricated from unprotected Q&T steel and not sufficiently resistant to the combination of abrasion, fine particle erosion and corrosion that they are exposed to during service. Material loss from wear and corrosion is severe, requiring replacement after only 2-4 months of service.

 

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