🏗️ Refractory Grade

Refractory Graphite — natural flake, SGF-91 to SGF-96

High-crystallinity natural flake graphite from Skaland mine, Norway — the world's highest-grade graphite deposit at 31% Cg ore grade. Three grades for steelmaking, foundry and high-temperature industrial applications. FCA Skaland or CIF. MOQ 20 t.

Request Specifications & Pricing All Grade Specifications
3 600 °CGraphite sublimation point
≥91–96%Carbon purity range
🇳🇴Single-mine EU origin
20 tMinimum order quantity
Refractory Grade Specifications

SGF-91, SGF-94 and SGF-96 — grade details

All grades REACH registered (CAS 7782-42-5). Full technical datasheets, CoA and MSDS available on request. Custom D50 and particle size distribution on request.

ParameterSGF-91SGF-94SGF-96
Carbon content (Cg)≥91%≥94%≥96%
FormFlakeFlake / PowderFlake / Powder
Typical D50+150 µm75–150 µm45–100 µm
Ash content≤9%≤6%≤4%
Moisture≤0.5%
CAS Number7782-42-5
REACH compliance✓ Compliant
OriginSkaland Mine, Senja Island, Norway 🇳🇴
Minimum order20 metric tonnes
IncotermsFCA Skaland / CIF available

Extended mesh sizes (+50, +80, +100, +200 mesh) available on request. Contact us with your exact particle size specification.

Refractory Applications

Where Skaland refractory graphite is specified

Steelmaking

MgO-C Refractories & Ladle Linings

Natural flake graphite is the carbon source in magnesia-carbon (MgO-C) bricks used for electric arc furnace (EAF) linings, basic oxygen furnace (BOF) converters and ladle walls. Crystalline flake provides superior thermal shock resistance and lower oxidation rates compared to amorphous carbon sources. Recommended grade: SGF-91.

Steelmaking

Continuous Casting Nozzles & Submerged Entry Nozzles

Alumina-graphite and zirconia-graphite compositions require high-purity flake graphite for consistent erosion resistance and low wettability by molten steel. Tight particle size control (D50 75–150 µm) is critical for dense, crack-free sintered bodies. Recommended grade: SGF-94.

Foundry

Crucibles & Foundry Additives

Clay-graphite and silicon carbide-graphite crucibles for non-ferrous metal melting (aluminium, copper, brass, zinc) demand large-flake graphite with consistent Cg% and low sulphur content. Skaland's low-sulphur deposit is preferred for applications where outgassing must be minimised. Recommended grade: SGF-91/94.

High-Temperature Industrial

Carbon-Bonded Refractories & Monolithics

Refractory castables, gunning mixes and ramming pastes for aluminium smelting pots, blast furnace troughs and cement rotary kilns use fine-grained refractory graphite as the carbon source. Natural flake outperforms synthetic graphite in bond strength and thermal conductivity at high loadings. Recommended grade: SGF-94/96.

Natural Flake vs. Amorphous Graphite

Why crystalline flake graphite outperforms amorphous grades

Refractory graphite performance depends heavily on crystallinity. Natural flake graphite from Skaland has a highly ordered layer structure (high Lc crystallite size) that gives it measurable advantages in refractory formulations:

  • Higher thermal conductivity — the ordered graphene planes in crystalline flake conduct heat laterally, dissipating thermal stress more effectively and reducing crack propagation in MgO-C bricks.
  • Lower oxidation rate — fewer edge sites and surface defects in large-flake graphite mean slower oxidation at high temperatures, extending service life in oxidising environments.
  • Higher aspect ratio — large, thin platelets create a more tortuous path for liquid slag penetration into refractory linings, improving corrosion resistance at the slag line.
  • Consistent flake size distribution — tight D50 control from Skaland's flotation process enables reproducible refractory microstructure and predictable performance batch-to-batch.
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Source credentials

Why refractory producers source from Skaland mine

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World-record ore grade

At 31% graphitic carbon in the deposit, Skaland mine produces concentrate with naturally high crystallinity and large flake size — no high-temperature graphitisation required, unlike synthetic alternatives.

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EU Critical Raw Material

Graphite is designated an EU Critical Raw Material. Skaland is Europe's largest natural graphite producer, providing a fully traceable, conflict-mineral-free alternative to Chinese-origin refractory graphite.

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Full documentation

Every shipment: batch-specific CoA (Cg%, D50, moisture, ash), REACH declaration, MSDS/SDS, CMR and Country of Origin certificate. Extended ESG documentation on request.

Request refractory graphite specifications and pricing

Tell us your application, required Cg%, particle size (D50 or mesh size) and annual volume. We respond within one business day with a technical datasheet and FCA Skaland price.

Request Datasheet & Pricing Refractory Grade Selection Guide →