firebrick

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firebrick,

brick that can withstand high temperatures, used to line flues, stacks, furnaces, and fireplaces. In general, such bricks have high melting points that range from about 2,800°F; (1.540°C;) for fireclay to 4,000°F; (2,200°C;) for silicon carbide. They also should resist the chemicals in slags and not spall, i.e., flake under wide temperature changes. Clay bricks of fireclay or kaolin are common. Silica has good strength at high temperatures, but since it spalls, it is used in furnaces that remain hot continuously. High alumina bricks can stand high temperatures and high loads. To withstand alkalis there are magnesite bricks. Firebricks are not good insulators. A special insulating firebrick of highly porous fireclay or kaolin has low conductivity and low heat content but a melting point of only about 1,600°F; to 2,800°F; (870°C;–1,540°C;). It makes a thin, light wall that saves fuel because it heats quickly. A separate layer of insulating material backs up other kinds of firebrick. Refractory mortar binds firebricks together. Additional support comes from metal anchors projecting from the metal casing. Special coatings give bricks extra protection from slags and dust-laden gases. Plastic or castable mixes are used for repairs or special shapes.

firebrick

1. Brick made of a ceramic material which will resist high temperatures; used to line furnaces, fireplaces and chimneys. See also: Brick
2. Brick made of a ceramic material which will resist high temperatures; used to line furnaces, fireplaces and chimneys.

firebrick

[′fīr‚brik]
(materials)
A refractory brick, often made of fireclay, that is able to withstand high temperature (up to 1500-1600°C) without fusion; used to line furnaces, fireplaces, and chimneys.

firebrick

a refractory brick made of fire clay, used for lining furnaces, flues, etc.
References in periodicals archive ?
Also, preliminary testing showed that when using a firebrick ([epsilon]' = 2.66; [epsilon]" = 0.0081) to isolate the sample, temperature rose an additional 100[grados]C.
In annealing this bolt head, I used a firebrick soldering platform.
While side walls of the kiln were paved with a double row of firebricks, particular attention was shown to ensure that the size of the area hugging the stack on the rear surface is equal to the total size of the exposed areas on the top of the firing chambers.
I also mortared the firebrick oven floor into place.
Perhaps the Tate's most notorious purchase made an early arrival: Carl Andre's pile of bricks, a neatly stacked row of firebricks, officially titled Equivalent VIII.
The 10.17 cubic foot firing chamber is made of 3" insulating firebricks. The kiln has both lid and sidewall heating elements.
There's nothing comparable to one of the art world's most infamous controversies, Equivalent VIII, Carl Andre's Minimalist display of firebricks at the Tate.
London's Tate gallery was accused of wasting public money in 1972 after it was revealed it had bought Equivalent VIII by Carl Andre (right) which consisted of 120 firebricks arranged on the floor.
We built firebricks around the grill unit and used fire clay mortar or refractory cement to joint them in place.
Score and cut two firebricks in half with a circular saw (halves measure 4 1/2 inches square).
* If there are firebricks in the firebox, they should be tan in color, never black.
The village grew up to serve the port which by 1837 had five jetties handling coal and iron ore and subsequently pig iron and firebricks from local sources.