refractory

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refractory

1. Med not responding to treatment
2. (of a material) able to withstand high temperatures without fusion or decomposition
3. a material, such as fireclay or alumina, that is able to withstand high temperatures: used to line furnaces, kilns, etc.

refractory

[ri′frak·trē]
(materials)
A material of high melting point.
The property of resisting heat.
(medicine)
Not readily yielding to treatment.

Refractory

One of a number of ceramic materials for use in high-temperature structures or equipment. The term high temperatures is somewhat indefinite but usually means above about 1830°F (1000°C), or temperatures at which, because of melting or oxidation, the common metals cannot be used. In some special high-temperature applications, the so-called refractory metals such as tungsten, molybdenum, and tantalum are used. See Ceramics

The greatest use of refractories is in the steel industry, where they are used for construction of linings of equipment such as blast furnaces, hot stoves, and open-hearth furnaces. Other important uses of refractories are for cement kilns, glass tanks, nonferrous metallurgical furnaces, ceramic kilns, steam boilers, and paper plants. Special types of refractories are used in rockets, jets, and nuclear power plants. Many refractory materials, such as aluminum oxide and silicon carbide, are also very hard and are used as abrasives; some applications, for example, aircraft brake linings, make use of both characteristics.

Refractory materials are commonly grouped into (1) those containing mainly aluminosilicates; (2) those made predominantly of silica; (3) those made of magnesite, dolomite, or chrome ore, termed basic refractories (because of their chemical behavior); and (4) a miscellaneous category usually referred to as special refractories.

refractory

A material, usually nonmetallic, used to withstand high temperatures.
References in periodicals archive ?
Kuttner installed a 1,050F (566C) hot blast recuperator, redesigned the water cooled tuyeres and added a new melt zone refractory lining to make the combustion and melting processes more efficient.
Tenders are invited for Ladle Refractory Lining Bricks.
At the third level, the benefits of making physical changes to the cupola, such as adding/removing a refractory lining, altering the height of the tuyeres, increasing/decreasing the cupola diameter or changing to a hot blast operation, are determined.
A unique feature of most cupolas is that the furnace is not required to have a refractory lining.
The separator, which is joined to the furnace without expansion joints, is fabricated with flat walls constructed from conventional water-cooled membrane panels and covered with a thin refractory lining.
Tenders are invited for Refractory Lining Maintainence Job At Anode Furnace And Its Related Area
Tenders are invited for Annual running or emergency repair works of refractory lining of producer and boilers in gas plant of ffp.
Tenders are invited for Comprehensive Annual Rate Contract For Complete Refractory Lining Of Chamber Furnaces, Pit Furnaces And Salt Baths In Engine Division Koraput.
The shell was replaced, and the refractory lining was installed along with new cooling system.
In particular, it will be replaced with about 800 tons of the refractory lining in the burning zone of the rotary kiln and 200 tons bronefuterovki grinding bodies and the raw mill, worn during use.
Tenders are invited for Inspection And Repair Of Refractory Lining Jobs In Sulphuric Acid Plant