Refractory bricks in a torpedo car used for hauling molten iron. In materials science, a refractory (or refractory material) is a material that is resistant to decomposition by heat or chemical attack and that retains its strength and rigidity at high temperatures. [1] They are inorganic, non-metallic compounds that may be porous or non-porous, and their crystallinity varies widely: they may ...

The meaning of REFRACTORY is resisting control or authority : stubborn, unmanageable. How to use refractory in a sentence. Did you know? Synonym Discussion of Refractory. resisting control or authority : stubborn, unmanageable; resistant to treatment or cure; unresponsive to stimulus… See the full definition

Refractory materials generally refer to inorganic nonmetal materials with a refractory degree of 15800℃ or above. Refractory materials include natural ores and various products made for certain purposes and requirements through certain processes, which have certain high-temperature mechanical properties and good volume stability. They are the ...

refractory, any material that has an unusually high melting point and that maintains its structural properties at very high temperatures.Composed principally of ceramics, refractories are employed in great quantities in the metallurgical, glassmaking, and ceramics industries, where they are formed into a variety of shapes to line the interiors of furnaces, kilns, and other devices that …

REFRACTORY definition: 1. not affected by a treatment, change, or process: 2. difficult to control; unwilling to obey…. Learn more.

Refractory metals are a class of metals that are extraordinarily resistant to heat and wear.The expression is mostly used in the context of materials science, metallurgy and engineering.The definition of which elements belong to this group differs. The most common definition includes five elements: two of the fifth period (niobium and molybdenum) and three of the sixth period …

Refractory products generally fall into one of two broad categories: preformed shapes or unformed compositions, often called specialty or monolithic refractories. Then, there are refractory ceramic fibers, which resemble residential insulation, but insulate at much higher temperatures. Bricks and shapes are the more traditional form of ...

2017年4月30日 · Refractory materials have a range of properties to meet the requirements imposed by different processes. The general requirements form the refractories are (i) ability to withstand high temperatures and trap heat within a limited area like a furnace, (ii) ability to withstand sudden changes of temperature, (iii) ability to withstand load at ...

Define refractory. refractory synonyms, refractory pronunciation, refractory translation, English dictionary definition of refractory. adj. 1. Showing or characterized by obstinate resistance to authority or control: refractory children; refractory behavior. 2. Difficult to melt or work;...

In this article we will discuss about:- 1. Meaning of Refractories 2. Properties of Refractories 3. Refractory Fibres 4. Uses. Meaning of Refractories: The term refractories embraces all materials used in the arts for the construction of heat resisting containers, using the word in its broadest sense, whether it be to afford space for the evolution of gases in combustion processes or the ...