Alumina Refining
Clear Edge delivers advanced filter cloth solutions for the alumina industry, designed to support high throughput, consistent solids capture, and long operational life. Backed by Material Science™ expertise and decades of experience in alumina refining, our solutions help improve process efficiency while supporting more sustainable operations.
High Performance Filtration Fabrics Engineered for Every Critical Stage of the Bayer Process.
Global alumina production begins with the extraction of bauxite and involves multiple complex processing stages, most of which rely on effective solid liquid separation. The refining process transforms bauxite into alumina, primarily used in aluminium production, with additional applications in ceramics, abrasives, and chemicals.
With growing demand from automotive, aerospace, battery manufacturing, and solar applications, alumina producers face increasing pressure to improve efficiency, reduce losses, and minimize environmental impact. Reliable filtration performance is essential at every stage of the Bayer circuit to meet these demands.
By collaborating with industry leaders, pilot plants, and OEM partners, we gain early access to testing and optimize filter cloth selection. Our material science-driven approach ensures superior performance across all our filter media. With Clear Edge, you get:
- Fast on-site process analysis
- Dedicated local support
- Extended filter life
Clear Edge in Alumina Filtration
Our Alutex™ range of filter cloth is developed in close collaboration with leading alumina refineries worldwide. By applying material science at every stage of design and manufacturing, we help maximize filtration performance, improve process stability, and extend cloth service life.
Our support extends beyond product supply, covering design, fabrication, installation, and technical service throughout the lifecycle of the filter cloth.
Filtration Across the Alumina Production Process
Filtration performance at each stage directly impacts product quality, recovery rates, energy consumption, and environmental compliance.
Liquor Polishing and Security Filtration
With the entire pregnant liquor stream passing through red mud security or polishing filtration, inefficiencies at this stage can impact the performance of the entire refinery. Alutex™ fabrics are engineered to deliver reliable clarification without compromising throughput.
Key Benefits:
- Unsurpassed solids capture
- Low flow degradation for increased filter uptime
- Efficient cake release
- Long operational life
- Advanced bag fabrication options including multi pocket or full leaf designs
- Compatibility with all filter aid systems
Hydrate Product and Seed Filtration
Seed de-liquoring is a critical and highly abrasive filtration step. Alutex™ seed filtration fabrics are designed to withstand demanding operating conditions while maintaining consistent performance.
Key Benefits:
- High throughput cake formation
- Dry filter cake
- Effective cake release
- Efficient solids capture
- Long service life
- Easy fitting fabricated products
Final Product De-Liquoring and Washing
Effective liquor removal is essential to deliver calcined alumina within specification. Precision woven Alutex™ fabrics provide consistent performance on vacuum filters used in final product filtration.
Key Benefits:
- Low cake moisture for reduced energy costs
- Efficient washing and sodium removal
- Reduced product loss in filtrate
- High resistance to mechanical damage
Oxalate Removal and Wash
Dry stacking of red mud residue relies on efficient filtration and process control. Alutex™ media provides consistent control over red mud cake formation for both filter presses and vacuum filters.
Key Benefits:
- Vacuum drum cloths in belt or panel styles
- Vacuum disc bags
- Pressure leaf bags for filtrate polishing
- Efficient solids removal
- Low cake moisture
- Robust operational life
Red Mud Residue and Tailings De-Watering
Effective removal of precipitated sodium oxalate is critical for organic contamination control and stable Bayer circuit performance.
Key Benefits:
- Tough media with custom wear protection
- Dry filter cake with efficient release
- Tailored solids capture to suit process configuration
- Wide width range to suit any filter size
- Options for varying process conditions
FrameTrak™ Cloth Retention System
Airtight and locked sealing system for vacuum drum and pan filters that improves safety, equipment uptime, and filtration performance when combined with Alutex™ filter cloth.
Proven Filtration Solutions: Real-World Case Studies
Enabling Stable and Continuous Filtration at a Major Bauxite Mining Operation
“The filters are running stable and smooth, helping us achieve a new productivity record. Clear Edge filter media assures non stop production.”
– Customer remark
Optimizing Red Mud Security Filtration in High Demand Alumina Processing Operations
Material Science™ driven customization delivering stable flow performance, improved filtrate clarity, reduced downtime, and extended filter cloth service life.
Clear Edge is your trusted partner for filtration solutions. Where Material ScienceTM meets decades of filtration experience.
Alumina Filtration Brochure
Filtration Expertise with a Global Footprint
Material Science By Clear EdgeTM
Our team of dedicated scientists and engineers harness the power of advanced materials to push the boundaries of filter cloth & belt performance, ensuring we stay at the forefront of filtration technology.
Worldwide Production and Support
Clear Edge operates a global network of production facilities and expert teams, ensuring seamless manufacturing, fast delivery, and localized technical support for high-performance filtration solutions tailored to industry needs.