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    Description: Using big vibrating table and adopting special castables, the company produces furnace l...

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  • fire clay bricks

    Description Fireclay bricks are the most widely used refractories made from clay minerals. It can be ...

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Requirements and Properties of Right Refractory

Date:2016-01-25 10:43 | From:Zhengzhou Sunrise Refractory | Author:admin
The general requirements of a refractory material can be summed up as:
1) Its ability to withstand high temperatures and trap heat within a limited area like a furnace;
2) Its ability to withstand action of molten metal , hot gasses and slag erosion etc;
3) Its ability to withstand load at service conditions;
4) Its ability to resist contamination of the material with which it comes into contact;
5) Its ability to maintain sufficient dimensional stability at high temperatures and after/during repeated thermal cycling;
6) Its ability to conserve heat.
 
Properties of Refractories
Important properties of refractories are: chemical composition, bulk density, apparent porosity, apparent specific gravity and strength at atmospheric temperatures. These properties are often among those which are used as ‘control points’ in the manufacturing and quality control process. The chemical composition serves as a basic for classification of refractories and the density, porosity and strength is influenced by many other factors. Among these are type and quality of the raw materials, the size and fit of the particles, moisture content at the time of pressing, pressure at mould, temperature, duration of firing and the rate of cooling.
 
Zhengzhou Sunrise Refractory Co., Ltd. is mainly engaged in the research and development of glass refractory products. Sunrise as a professional glass refractory manufacturer can provide excellent products such as fused cast AZS block 33#,36#,41#, fused cast alumina block, silica brick, magnesia brick, zircon brick, corundum block, zircon mullite brick, mullite series brick, sillimanite brick, fire clay bricks, etc. which all have passed the ISO international certified. 

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