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Electro-Thermal Purification Services

Committed to staying on the cutting edge of new and emerging technologies, Superior Graphite frequently engages in cooperative research with university and government laboratories. One of our many successes is our continuous electro-thermal purification technology, which exposes carbon and graphite materials to temperatures up to 3,000°C to produce granulated powders, in sizes from 150-1,250 microns, with a high carbon content and virtually free of impurities. Removing volatile gases and select heavy materials creates a highly ordered crystalline structure with exceptional purity, consistent quality, and increased resiliency, lubrication, and thermal and electrical conductivity. All powders undergo both physical and ...


Graphite & Carbon Powders

Superior Graphite consistently delivers high-quality, uniquely-sized carbon and graphite materials with unique particle size and the correct morphology to meet the most sensitive customer requirements. We globally-source and manufacture a full range of materials including flake, amorphous, and vein natural graphites, synthetic graphite, delaminated flake, and a variety of cokes.

Graphite is a form of carbon and truly is one of the most unique minerals, in that it is a great conductor of heat and electricity, is chemically inert, and is a great lubricant. Its name comes from the Greek word graphein, which means to write. Graphite has a hexagonal, layered lattice structure, and the bonds within a each hexagonal layer of are comprised of very strong covalent bonds. The bonds between the layers are Van der Waal bonds, which are very weak, contributing to the lubricity of graphite.

One of our most popular graphitic materials is found in recarburiser section and is known as Desulco®.  Since its introduction in 1977, Desulco® has been recognized as the premier recarburiser for use in the production of ductile iron.  Due to its extremely high purity, its particle morphology, and its graphitic crystalline structure, Desulco® is a unique type of carbon. The extremely low gas content of Desulco® makes it the preferred material for use as a late addition in the grey iron industry, as well as in steel plants producing high carbon steel grades.

Diamond is another natural form of carbon, which is cubic in structure and contains covalent bonds throughout, contributing to its strength.

Graphite has a hardness of 2 on the Mohs scale of hardness (1 to 10 where 1 is the softest and 10 is the hardest), has a silvery sheen and a black streak. Diamond on the other hand, has a hardness of 10, is transparent and has no streak.

There are three main types of graphite all derived from metamorphism: amorphous, crystalline flake and crystalline vein.

Grinding and Sizing Services

For more than 90 years, the grinding and sizing of granular materials has been at the core of Superior Graphite's business. Our continuous investment in the latest technology milling, blending, and classification systems, along with our engineering focus on the characterization of carbon and graphite, allow us to economically deliver premium quality custom carbon blends with precise particle size and morphology control.

In as little as 24 hours we can mill, grind, blend, size, and classify materials including all types of natural and synthetic graphites, delaminated flake, and a variety of cokes, to produce consistently sized particles from 1 micron to 3/8-inch with the correct morphology to meet the most ...


Silicon Carbide Shapes and Powders

Known industry-wide as a producer of high quality silicon carbide (SiC) shapes and powders, Superior Graphite has the additional advantage of being one of the few manufacturers of both alpha (á)-SiC and beta (â)-SiC in business today. Our cutting-edge, continuous electro-thermal process and intricate wet attrition milling and air milling operations enable us to cost-effectively produce particle size ranges from a median of less than 0.5 micron, up to coarse 20 micron particles, including an assortment of macro and micro grits. The finest grades can be processed into sintered shapes that exhibit the excellent mechanical properties, hardness, corrosion resistance, and thermal conductivity required for high-performance ...