Silicon Carbide Refractories. Silicon Carbide refractories are produced from silicon carbide, a raw material synthesized in a resistance-type electric furnace at temperatures exceeding 2500°C, through the reaction of silica with carbon. They have a thermal conductivity ten times that of fireclay refractories, good corrosion and thermal shock resistance, and can be formed into complex shapes.
2013-12-25 · Based on chemical composition Acidic refractoriesThey consist of mostly acidic materials like alumina (Al 2 O 3) and silica (SiO 2).They are not attacked or affected by acidic materials, but easily affected by basic materials e.g.:-silica, alumina, fire clay refractories, etc.
2019-4-20 · The major basic refractory is the refractory with the content of magnesia, dolomite and limestone. The most commonly used basic refractory brick is magnesite brick with the strong resistance to alkaline slag and iron slag. The basic refractory is applied in …
2019-4-17 · Refractory materials. Refractory materials must be chemically and physically stable at high temperatures. Depending on the operating environment, they must be resistant to thermal shock, be chemically inert, and/or have specific ranges of thermal conductivity and of the coefficient of thermal expansion.. The oxides of aluminium (), silicon and magnesium are the most important materials used …
And whether basic refractory is industrial grade, or electron grade. There are 497 basic refractory suppliers, mainly loed in Asia. The top supplying countries are China (Mainland), India, and Turkey, which supply 95%, 1%, and 1% of basic refractory respectively.
2019-2-4 · HOW TO CLASSIFY REFRACTORY MATERIALS Artificial refractories like - Zirconium Carbide, Silicon Carbide (depending on the it reacts with basic slags to form an acid refractory) Out of these Graphite is the least reactive and is extensively used in metallurgical furnaces where the process of oxidation can be controlled. Special Refractories.
2017-8-4 · Uses Under acidic conditions Under basic conditions Can be either in acidic or in basic conditions. (b) Special type Silicon carbide, cermets and SIALON are some examples of special refractory. They are used for These refractory are basic in nature. Some properties are
Refractory: 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 …
High temperature corrosion of oxide bonded silicon carbide refractory lining in WtE facilities. in the presence of basic salts, the acidic SiO 2 layer is dissolved and accelerated corrosion of SiC occurs. 8 Finally, in the case of an oxygen-depleted Silicon carbide is bonded with an alumino-silie matrix
2019-4-18 · In addition, zirconium carbide refractory and silicon carbide refractory are used as special acidic refractory. Acidic refractory is the refractory material that is not affected by acidic materials at high temperature. But acidic refractory reacts with basic slags easily.