Case Study

Abrasion Protection for Paper Mill Cyclones

Protection from Abrasion



Paper Mill, UK.


Scope of Work 

A pressure cyclone is designed to separate steam from the pulp in a paper or card manufacturing plant. The pulp itself coupled with high temperatures and chemical content produces a very aggressive corrosive and abrasive environment. Two cyclones were delivered to our workshop in Leeds in need of a programme of repair and onward protection against abrasion. Both cyclones were suffering from severe abrasion damage and both exhibited through wall defects. The paper plant operators wanted to protect against future damage, and the resulting expensive downtime, and a significant increase in service lifetime was also required.



Plasmet HTE.

Composite Structural Rehabilitation.


Coating System

Corroserve recommended that after being abrasive blasted to Sa2½ the internal surface be repaired and reinforced using wetted out 300gsm glass fibre matting. After initial cure multiple coats of Plasmet HTE were applied to both internal and external surfaces, to reach a required DFT of 2000 microns.


Coating Credentials 

Plasmet HTE is a viscous, solvent free, amine cured epoxy, containing both stainless steel flakes, glass flakes and silicon carbide. The specialist coating provides excellent abrasion (and chemical) resistance.

Plasmet HTE material has been used in cyclones, chemical process vessels, sugar beet pulping drums etc. It is also useful for building up damaged areas of pump impellers and casings where impact or abrasion, are prevalent. The coating has good temperature resistance; Immersed conditions – 135°C, non-immersed conditions – 170°C.

Plasmet HTE in conjunction with composite structural repair techniques will ensure the cyclones will have an increased service life, and much greater protection against abrasion.

Paper Mill Cyclones - Before repair and abrasion protection

Paper Mill Cyclones - Following CSR repair and abrasion protection

Visit Our Other Sites