Furnace Performance & Agglomeration Engineering Solving the Ultrafine Feed Challenge in Smelting Operations
The Challenge of
Ultrafine Material
In many mining and smelting environments, fine mineral particles present a significant operational constraint.
Ultrafine material whether generated during concentration, dust collection, or historic tailings reprocessing — often cannot be directly introduced into smelting furnaces due to its impact on burden permeability and gas flow dynamics.
When fine particles are introduced without conditioning, they may:
- Reduce permeability within the furnace bed
- Disrupt upward gas flow and heat distribution
- Increase dust carryover and material loss
- Create unstable pressure conditions
- Contribute to burden collapse or furnace “blowout” events
These issues reduce process stability, increase downtime risk, and limit recovery efficiency.
Engineered Agglomeration for Controlled Permeabilty
Mine Fines Agglomeration (MFA) technology addresses this challenge by converting fine mineral material into engineered agglomerates with controlled size, structure, and mechanical integrity.
Through a specialised extrusion-based process using water-based binders, MFA produces:
- Uniform particle size distribution
- Improved mechanical strength
- Enhanced handling stability
- Controlled porosity to support furnace gas flow
By restoring permeability and structural consistency within the burden,
MFA agglomerates promote more predictable furnace behaviour and improved operational stability.
Intergration of Carbonaceous Additives
In metallurgical applications requiring reduction reactions, carbonaceous materials such as anthracite can be incorporated during the agglomeration process.
Anthracite, a high-carbon, low-volatile coal, may serve multiple functions:
- Supporting metallurgical reduction chemistry
- Enhancing agglomerate structural integrity
- Improving thermal behaviour in pre-heating and reduction zones
- Contributing to consistent furnace performance
This capability enables MFA to produce not only physically stable agglomerates, but also metallurgically compatible furnace feed.
Beyond Waste
Recovery
While MFA is widely recognised for unlocking value from fines and tailings, its role extends further:
- Improving furnace feed engineering
- Increasing overall metal recovery
- Reducing operational risk associated with fine particulates
- Supporting more stable and efficient smelting operations
By transforming ultrafine material into structured, furnace-ready feed,
MFA bridges the gap between waste recovery and metallurgical optimisation.
