Do you offer anti-oxidation coatings?

Yes. We supply and apply graphited coatings and paints (e.g. GRAFOTERM, GRAFICOAT) that protect graphite and refractory surfaces in furnaces and oxidizing environments, extending component life.

How do you protect refractory channels and surfaces?

With graphited coatings such as GRAFOTERM and GRAFICOAT that reduce slag/metal sticking, provide dry lubrication, and limit oxidation on rotary kiln tracks and refractory channels.

On which surfaces is it applied?

On refractory in contact with metal or slag: launders, ladles, casting-zone walls, and lining parts. The refractory type is stated when quoting, since it governs film adhesion.

Does it extend refractory life?

It helps when deterioration comes from adhesion and the cleaning that follows. If wear is from flow erosion, the coating does not prevent it and the zone design should be reviewed.

How and how often is it applied?

As a paint or dispersion, on a clean, dry surface, during scheduled stoppages. Frequency is set by observing adhesion over the first campaigns.

Refractory surface with a graphite lubricant film

Lubrication applications

Refractory surface lubrication

Protection of blocks, molds and surfaces subjected to high temperatures with a release and non-stick effect.

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Refractory protective coating

Also known as: Graphite paint for refractories · Non-stick coating for refractories · Graphite dispersion for hot surfaces · Refractory protection against slag

[ Technical summary ]

Refractory in contact with metal or slag suffers two effects that reinforce each other: metal adheres and, when removed, tears material from the surface. A graphite coating interposes a layer the metal does not wet, so adhesion decreases and cleaning stops being destructive. It is applied as paint or dispersion over the surface and renewed as it wears, without intervening in the refractory itself.

[ Problem it solves ]

Reduce metal and slag adhesion on the refractory, so that cleaning does not tear material away and shorten lining life.

Processes

Dry-film application

Operating conditions

Refractory-to-metal contact
High temperature

When it is suitable

Metal or slag adheres to the refractory surface
Mechanical cleaning damages the lining
The refractory must be protected without replacing it
The surface can be coated during scheduled stoppages

When it may not be suitable

Wear comes from mechanical erosion rather than adhesion
The surface cannot be prepared or dried before application
The product cannot be validated in the plant before adopting it in production

Process challenges

Metal or slag sticking
Refractory wear
Difficult mold release

Advantages

Reduces sticking
Thermal stability
Applicable as paint or suspension

Limitations

Not a hydrodynamic oil lubricant
May stain light-colored surfaces
Performance depends on surface preparation and reapplication

[ Critical selection variables ]

These variables define the grade and the geometry. Actual values are confirmed against the grade datasheet.

Operating temperatureDecisive
Molten metal or alloy in contactDecisive
Application methodDecisive
Substrate or surface to be treatedDecisive
Reapplication frequencyRelevant
Bath or flux chemistryRelevant

[ Required material properties ]

Properties that guide selection. Numerical values come from each grade's datasheet.

Critical properties

Lubricating film formation
Thermal stability
Particle size distribution
Non-wetting by molten metal

Secondary properties

Chemical resistance
Dispersibility

[ Related ]

[ Frequently asked questions ]

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Technical content reviewed by ESGRAF — Last reviewed: September 8, 2026

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