Fire brick

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"Firebrick" redirects here. For the communities in the United States, see Firebrick, Ohio and Firebrick, Kentucky.
torpedo car
used for hauling molten iron

A fire brick, firebrick, fireclay brick, or

thermal conductivity for greater energy efficiency. Usually dense fire bricks 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.[1] They are weaker, but they are much lighter and easier to form and insulate far better than dense bricks. In any case, firebricks should not spall
, and their strength should hold up well during rapid temperature changes.

Manufacture

In the making of firebrick,

Neath Valley of Wales
.

High temperature applications

The silica fire bricks that line steel-making furnaces are used at temperatures up to 3,000 °F (1,649 °C), which would melt many other types of ceramic, and in fact part of the silica firebrick liquefies.[citation needed] High-temperature Reusable Surface Insulation (HRSI), a material with the same composition, was used in the insulating tiles of the Space Shuttle.[citation needed]

Non-ferrous metallurgical processes use basic refractory bricks because the slags used in these processes readily dissolve the "acidic" silica bricks.[4] The most common basic refractory bricks used in smelting non-ferrous metal concentrates are "chrome-magnesite" or "magnesite-chrome" bricks (depending on the relative ratios of magnesite and chromite ores used in their manufacture).[5]

Lower temperature applications

A range of other materials find use as firebricks for lower

incinerators and cremators
. Common red clay brick may be used for chimneys and wood-fired ovens.

See also

References

  1. ^ "Insulating fire bricks". Retrieved 2016-08-07.
  2. ^ "Refractory Fire Bricks | Kiln Building Fire Brick". www.sheffield-pottery.com. Retrieved 2020-07-18.
  3. ^ "Refractory Fire Bricks | Kiln Building Fire Brick". www.sheffield-pottery.com. Retrieved 2020-07-18.
  4. ^ Modern Refractory Practice, Fifth Edition (Harbison–Walker Refractories: Pittsburgh, Pennsylvania, 1992), Page CR-2
  5. ^ Modern Refractory Practice, Fifth Edition (Harbison–Walker Refractories: Pittsburgh, Pennsylvania, 1992), Page CR-3
  6. ^ "Firebricks High Temperature Resistant". www.vitcas.com. Retrieved 2023-06-21.
  7. ISBN 3-8027-3155-7
    .

Further reading
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