Kyanite
Virginia Kyanite is an industrial mineral concentrate that contains 56-61% alumina by weight. Kyanite is sold in granular or powder form and can be shipped in a variety of grain sizes, ranging from thirty-five mesh (425 microns) material to 325 mesh (45 microns).
Virginia Kyanite®
Premium Grade Virginia Kyanite is a low iron kyanite with an iron oxide content of <0.19%. This reduced iron content increases high-temperature properties, such as reduced glass formation and enhanced creep resistance.
Premium Grade Virginia Kyanite ®
What is Kyanite?
Virginia Kyanite is produced through a highly sophisticated beneficiation process. Quality control techniques are applied at every step to ensure a consistent, high-quality Kyanite concentrate.
Virginia Kyanite is used in refractory applications for its low impurities, predictable expansion and high mullite content upon heating, excellent creep resistance, high hot strength, chemical attack resistance, high thermal shock resistance and abundant supply and reserves.
Kyanite converts to mullite at a temperature of about 1250-1430°C with an associated 17-19% volumetric expansion. This large, irreversible expansion of Kyanite is utilized in a variety of high-alumina refractories to off-set the shrinkage associated with other refractory raw materials and to increase density and reduce porosity in the void space.
Kyanite Uses
Kyanite can be used in monolithics/castables, cordierite/mullite bricks pre-cast shapes, foundry mold coatings and washes, kiln furniture, tiles, brake shoes, grinding wheels, ceramic parts, pottery, sanitaryware, ovenware, and more.