Dinas Refractories

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Dinas Refractories

refractory materials containing not less than 93 percent silica. They are made from silicic rocks, mainly quartzites, with an admixture of 2-2.5 percent lime. The crude rock is powdered and mixed with milk of lime; the articles are shaped on presses, dried, and fired at 1400°-1460°C. Dinas refractories are heat-resistant up to 1680°-1730°C. The temperature at which deformation begins under a 200-kilonewton/m² (2 kg/cm²) load is 1630°-1670°C. The products are used in the construction of coke ovens and glass, open-hearth, and other furnaces. Special kinds of Dinas refractories have a higher silica content and higher density. Lightweight dinas refractory products with a density of 1.1-1.3 g/cm³ are also made.

REFERENCE

Kainarskii, I. S. Dinas. Moscow, 1961.

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