Refractoriness refractory contend in no load temperature when the utility without melting softening function. Significance and melting refractory degree is not the same. 
The melting point is a crystallization of pure object phase and liquid phase in the flat static temperature. While the ordinary refractory material is composed of a variety of mineral synthesis of multi solid mixture, non congruent melting, but under certain temperatures have liquid, liquid on the proportion unceasingly increases with the temperature rising, to a fixed temperature solid phase can completely melted into a liquid, in a temperature range the two fixed temperatures during the in both liquid and solid, two also exist.
The melting point is a crystallization of pure object phase and liquid phase in the flat static temperature. While the ordinary refractory material is composed of a variety of mineral synthesis of multi solid mixture, non congruent melting, but under certain temperatures have liquid, liquid on the proportion unceasingly increases with the temperature rising, to a fixed temperature solid phase can completely melted into a liquid, in a temperature range the two fixed temperatures during the in both liquid and solid, two also exist.
The fundamental decision conditions refractoriness of the material chemical mineral synthesis and distribution. Variety magazine, especially magazine ingredients with strong flux utility, will seriously decrease products refractoriness. Component is not evenly distributed, high melting point of mineral and cannot constitute an ideal, will make the products refractoriness decreased. 
Note the, refractoriness does not represent the product using the temperature, because the refractory material in the process often subjected to high temperatures utility at the same time, also with load and material flux effect, so the temperature often are much lower than the refractoriness.
Note the, refractoriness does not represent the product using the temperature, because the refractory material in the process often subjected to high temperatures utility at the same time, also with load and material flux effect, so the temperature often are much lower than the refractoriness.
Refractoriness are usually made of cone, pyrometric cone scale representation. Measure refractory refractory experimental approach is: will the tested refractory raw materials or made of refractory fiber products test cone with known refractoriness scale cases in cone, in under the premise of gun and compare test cone and scale of smelting temperature cone bend down, until the test cone top bent the pilot scale contact chassis, and on behalf of the cone bend down the temperature for the test cone refractoriness.
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