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Refractory Knowledge
The Use Property of Refractory Material
Date:2017-08-30 10:20 From:Zhengzhou Sunrise Refractory Author:admin
In use process of refractory material, due to a variety of differences of environment, a variety of requirements are proposed on the performance of products, whether to meet the requirements of performance indicators, become the main measure standard of the quality of refractory products, and also prolong its service life, improve the important basis of use value. RefractorinessRefractoriness is refractory material resist to high temperature function rather than melting performance, its meaning of refractoriness and melting point are different, melting point is refers to the crystalline phase and liquid phase of pure substance is in equilibrium temperature. And general refractory material is multiphase solid mixture composed of a variety of mineral, has no uniform melting point, but began to produce liquid phase under certain temperature, with temperature rising, the liquid phase ratio increases continuously, to a fixed temperature, solid phase can all melt for the liquid phase. Between the two fixed temperature range, both liquid phase and solid phase exist at the same time.The chemical composition, mineral composition and its distribution of refractory products are the most basic factors to influence the refractoriness. Impurity elements with strong solvent effect, willn seriously reduce the refractoriness of products. Uneven distribution of composition that cannot form an ideal high melting point mineral, will lead to lower refractoriness products, so damage the using performance of products, but the refractoriness of products doesn't mean its use temperature, because refractory material in use, processes through high temperature function at the same time, often with the solvent effect of load and external things and so on.
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