Melting furnace back in operation
An evenly glowing melting furnace is the best proof of a clean refractory lining.
Initial situation
The converter of a secondary aluminium plant was due for refractory lining. Melting units in the aluminium sector place particular demands on the lining: molten aluminium attacks it differently from slag, and charging cold scrap subjects it to sudden loads. The lining was installed by our own installation teams, without subcontractors.
Scope of services
- Refractory lining of the melting chamber
- Zone-specific material selection for hearth, walls, arch and burner area
- Non-wetting mixes in the bath line
- Controlled first heat-up with holding stages
- Documentation of material batches, positions and the heat-up curve
Project data
The task
The bath line as the most heavily loaded zone – molten aluminium must not penetrate and corundum build-up must not clog the cross-section
Thermal shock from charging cold scrap into the hot furnace
Differing loads on hearth, walls, arch and burner area
First heat-up without steam pressure and cracking in the fresh lining
The SBS approach
Non-wetting, corundum-repellent mixes in the bath line
Material selection with sufficient thermal shock resistance to prevent spalling
Zone-specific material selection instead of a one-size-fits-all compromise – each zone receives the appropriate material
Controlled first heat-up with holding stages
Complete documentation of material batches, positions and the heat-up curve as a basis for the next shutdown
Melting furnace back in operation in pictures
The opened converter in operation – the freshly installed lining under load
Even glow pattern across the entire melting chamber
Measurable results
The key figures of the “Melting furnace back in operation” project
Similar references
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