A fire brick, firebrick, or refractory brick is a block of refractory ceramic material used in lining furnaces, kilns, fireboxes, and fireplaces. A refractory brick is built primarily to withstand high temperature, but will also usually have a low thermal conductivity for greater energy efficiency. Usually dense firebricks are used in applications with extreme mechanical, chemical, or thermal stresses, such as the inside of a wood-fired kiln or a furnace, which is subject to abrasion from wood, fluxing from ash or slag, and high temperatures. In other, less harsh situations, such as in an electric or natural gas fired kiln, more porous bricks, commonly known as "kiln bricks" are a better choice. They are weaker, but they are much lighter, easier to form, and insulate far better than dense bricks. In any case, firebricks should not spall under rapid temperature change, and their strength should hold up well during rapid temperature changes.
Read more about Fire Brick: Manufacture, Composition, High Temperature Applications, Lower Temperature Applications
Famous quotes containing the words fire and/or brick:
“A young person is a person with nothing to learn
One who already knows that ice does not chill and fire does not burn . . .
It knows it can spend six hours in the sun on its first
day at the beach without ending up a skinless beet,
And it knows it can walk barefoot through the barn
without running a nail in its feet. . . .
Meanwhile psychologists grow rich
Writing that the young are ones’ should not
undermine the self-confidence of which.”
—Ogden Nash (1902–1971)
“Man you ought to see his plans for allsteel buildins. He’s got an idea the skyscraper of the future’ll be built of steel and glass. We’ve been experimenting with vitrous tile recently... crist-amighty some of his plans would knock you out... He’s got a great sayin about some Roman emperor who found Rome of brick and left it of marble. Well he says he’s found New York of brick an that he’s goin to leave it of steel... steel an glass.”
—John Dos Passos (1896–1970)