fire clay


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Related to fire clay: Fire brick, refractory cement

fire clay,

clayclay,
common name for a number of fine-grained, earthy materials that become plastic when wet. Chemically, clays are hydrous aluminum silicates, ordinarily containing impurities, e.g., potassium, sodium, calcium, magnesium, or iron, in small amounts.
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 that has a high degree of resistance to heat. By the best standards it should have a fusion point higher than 1,600°C;. The term "fire clay" is commonly held to exclude kaolin and other refractory potter's clays. Fire clay should contain high percentages of silica and alumina, with as little as possible of such impurities as lime, magnesia, soda, and potash, which lower the fusion point of the clay. Fire clay often forms the bed layer of earth under seams of coal. Two types are recognized—flint clay, exceedingly hard, nonplastic, and resembling flint in appearance, occurring in the United States; and plastic fire clay. The principal uses of fire clay are in the manufacture of firebrick and of various accessory utensils, such as crucibles, saggers, retorts, and glass pots, used in the metalworking industries.

fire clay

Clay having a melting point above 1600 degrees centigrade, especially used for making fire bricks.

fire clay

a heat-resistant clay used in the making of firebricks, furnace linings, etc.
References in periodicals archive ?
Tenders are invited for Supply of fire clay and castable refractory details refer tender document
2 refractory bricks (rib wedge, double-sided) fire clay shaped sha-i no.
Enclosed , 3.Refractory Nozzle 25 Mm High Alumina Material As Per Is:8953 2006 Or Drg No Ofm-90201A Required Ap Is 20% Maxium Quotation With Ap"20% Will Be Ignored.On Supplies Received, 4.Refractory Nozzle 32 Mm Drg.No.Ofm -00837B, 5.High Duty Fire Clay Mortar To Specn.
Tenders are invited for Brick, fire clay, 4p-12-42,
Limited Tenders are invited for Supply of fire clay and insulation castables
Tenders Are Invited For High Heat Duty Fire Clay Bend Dia 25 & 50 Mm
Tenders are invited for Purchase of fire clay siskat hand facing compound
Tenders are invited for Fire clay siskat hard seting compund
Tenders are invited for Purchae of fire clay hard facing compound