Screening and filtration processes in mining and mineral processing place extreme demands on equipment surfaces. Screens, filters, vibrating screens and screening equipment are exposed to very high material throughput, abrasive crystalline minerals, sharp particle edges and chemically aggressive media.
While screen inserts are typically designed for replacement, the supporting structures such as screen frames, housings and discharge elements must withstand the same mechanical stresses for long periods of operation. Without adequate protection these components suffer severe abrasion, corrosion and progressive structural wear.
MetaLine elastomeric coating systems provide seamless wear protection for screens, filters and associated screening equipment. The elastic coating absorbs impact forces, protects structural components and significantly extends service life in harsh mining and mineral processing environments.
In areas such as pure-mineral processing, metal-free surfaces are often required to prevent contamination and ensure constant product purity. MetaLine Series 700 coatings meet these requirements while providing excellent abrasion resistance and chemical stability.
Typical failure mechanisms in screens and filters
- Abrasion caused by sharp crystalline minerals
- Impact wear from coarse particles and high mass flow rates
- Corrosion from moisture and chemically aggressive process media
- Material fatigue from vibration and dynamic loading
- Structural wear on screen frames and support elements
These combined stresses gradually weaken screening structures and can lead to premature failure, reduced process efficiency and increased maintenance requirements.
Why elastomeric coatings work
MetaLine Series 700 elastomeric coatings are specifically designed to absorb mechanical impact energy while maintaining strong adhesion to steel and polyurethane substrates.
Unlike traditional glued rubber linings, the spray-applied elastomer creates a completely seamless protective layer. This eliminates joints and weak points where infiltration, corrosion or detachment can occur.
Typical advantages include:
- Seamless protective lining without joints or seams
- Excellent resistance to abrasion and particle impact
- Metal-free coating suitable for pure mineral processing
- Strong adhesion to steel and polyurethane surfaces
- Optional non-stick properties to reduce material buildup
The coating remains effective even under continuous vibration conditions typical for screening and classification equipment.
Typical components and applications
MetaLine coatings are used on a wide range of screening and filtration equipment including:
- Screening frames
- Drum screen constructions
- Vibratory screens
- Sizers and classification equipment
- Zigzag filters
- Screen boxes and discharge elements
- Screen cleaners
- Paddle mill revolving scrubbers
These systems are widely used in mining, quarrying and mineral processing plants where reliable classification and filtration are essential for efficient production.
Application limits
MetaLine elastomeric coatings provide excellent protection against abrasion and vibration in screening and filtration systems, but application limits must always be considered.
Typical limits include:
- Continuous operating temperatures above approximately 80 °C (175 °F)
- Strong oxidizing chemical environments
- Surfaces contaminated with oils or residues without proper preparation
- Structural defects that prevent durable coating adhesion
The correct coating thickness and system selection should always be evaluated based on the mechanical load, material throughput and chemical exposure of the specific application.
