Inspect and maintain2 min25.06.2026

Extending campaign life: what really helps on industrial furnaces

Two identical furnaces with identical linings can last for very different lengths of time. The difference comes down to a handful of decisions.

Newly lined bath area of an aluminium furnace after completion of the work

Two identical furnaces with identical linings can last for very different lengths of time. The difference rarely lies in the material alone, but in a handful of decisions.

Four levers that noticeably extend service life

Material selection according to load zone: at the bath and melt line, non-wetting materials are used that prevent aluminium infiltration and corundum formation — a main cause of early wear on aluminium furnaces.
Controlled heat-up curve: defined holding stages instead of a rapid ramp-up avoid cracks and spalling.
Precisely dimensioned expansion joints: too narrow leads to spalling, too wide to infiltration — a few millimetres decide months of service life.
Early detection by thermography: measure the shell temperature as a trend and carry out spot repairs before a hotspot becomes an unplanned shutdown.

That turns reactive maintenance into plannable availability — lining, repair relining and overhaul from a single source, with our own installation teams and complete documentation.

At a glance

4 levers

material, heat-up curve, expansion joints, early detection

A few mm

expansion joint dimension decides months of service life

Expansion joints: the most inconspicuous cause of refractory damage

2 minRead

Skilled worker carrying out care spraying using the shotcrete process on an industrial furnace

Inspect and maintain

Care spraying and shotcrete: extending service life intelligently

5 minRead

$View into an opened aluminium melting furnace with a new refractory lining$

Lining and materials

The refractory system as the decisive factor in the aluminium melting furnace

5 minRead

From practice

Matching references

Melting furnace back in operation

Refractory lining of a converter melting furnace in secondary aluminium by our own installation teams – the even glow pattern in operation proves the quality of the workmanship.

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