Usage of high temperature refractory  materials
There are many kinds of refractory materials, usually divided into ordinary refractory material (1580~1770 degrees C), advanced refractories (1770~2000 degrees C) and super refractory materials (above 2000 degrees Celsius);According to the chemical characteristics are divided into acid refractory, neutral refractory and basic refractory materials. In addition, there are special occasions for refractory materials.
Now the definition of refractory materials, has not only depends on whether the refractoriness at 1580 DEG. Refers to the current refractories used in metallurgy, petrochemical, cement, ceramics and other production equipment with inorganic non-metallic materials.
Acid refractory with silicon oxide (SiO2) as the main ingredient, commonly used are silica brick and clay brick is siliceous. Products containing more than 93% SiO2, the use of raw materials with silica, silica and other waste.The silica acid slag erosion ability is strong, but vulnerable to the erosion of basic slag, its softening temperature is very high, close to the fire, the volume does not shrink after repeated burning, or even a slight swelling, but the thermal shock stability. Silica is mainly used for coke oven, glass furnace, furnace and other acidic thermal equipment, in accordance with the brick physicochemical indexes and SiO2 content can be divided into several levels, mainly used in glass furnace and coke oven silica brick,
Clay brick with refractory clay or bauxite clinker as main raw material, containing 30%~46% alumina, refractory 1580~1770 C, weak acid refractory material, heat shock resistance, resistance to acid slag, widely used in refractory clay brick clay as main raw material is called ordinary clay brick, made of coke gem clinker as the main raw material, the porosity in the clay brick below 17% is called low porosity clay brick.
Neutral alumina refractories, chromium oxide, silicon carbide or carbon as the main component. The main products are: neutral refractory corundum brick, high alumina brick, silicon mullite brick, mullite brick, alumina chrome brick, carbon brick, aluminum, graphite or carbon bricks.The main crystalline phase in high alumina product is mullite and corundum, corundum content increased with the increase of alumina content, containing more than 95% of alumina corundum refractories is the quality of a wider use of alumina containing more than 95% high-quality refractory corundum products is a widely used.Chrome brick by using chromium oxide as the main component of steel slag, good corrosion resistance, but poor thermal shock resistance, softening degree is low. The indicators of high alumina bricks are all excellent, good price, so a wide range of applications, but due to the high aluminum brick anti alkali erosion ability is poor,
Silicon carbide brick is used for bauxite and silicon carbide two kinds of materials as the main raw material, mainly used for cement rotary kiln transition zone. Carbon refractories with carbon bricks, graphite and silicon carbide products. The carbonaceous products is another type of refractory materials, according to the composition of components and products containing carbon raw minerals, divided into carbon brick, graphite and silicon carbide products of three kinds of products.Carbon brick is with high grade petroleum coke and tar as raw material, asphalt binder, air condition at 1300 DEG C for firing. Graphite products (except natural graphite) with carbonaceous materials in electric furnace by 2500~2800 C graphitization treatment system.Silicon carbide products are silicon carbide as raw materials, with clay, silicon oxide and other binders in the 1350~1400 C burning.Can also be made of silicon carbide and silicon nitride and silicon nitrogen atmosphere in furnace of silicon carbide products. The carbonaceous products low coefficient of thermal expansion, high thermal conductivity, good thermal shock resistance, high temperature and high strength.Carbonaceous products are widely used in high temperature furnace (bottom and hearth, lower stack), smelting non-ferrous metal furnace lining. Graphite products can do autoclave reactor lining and petrochemical. Silicon carbide and graphite.The main component of carbon brick and graphite products to carbon (c), low coefficient of thermal expansion, high thermal conductivity, good thermal shock resistance, high strength, resistance to acid and salt corrosion, especially weak acid has good resistance, without wetting, metal and slag light, like a for smelting of iron and steel industry, as well as petroleum, chemical.

Taurus Refractory ramming mass Factory mainly engaged in professional manufacturer of development, production and sales of the refractory mixture such as melting copper, aluminum and zinc furnace lining. And supply castable refractory for copper smelting, ramming mass for molten copper,fire clay,refractory mortar, refractory cement ,refractory mixture, refractory concrete and silica sand for copper smelting.
Website: http://www.jnrefractory.com  
Contact: Mr. Niu
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