Neutral Refractory Material Definition
At high temperatures, Neutral refractory materials that are not easy to react significantly with acid or alkaline slag are called neutral refractories, such as carbon refractories and chromium refractories. Sometimes high-alumina refractories are also classified in this category. It is a neutral refractory with some acid tendency, while chromium refractories are classified as a neutral refractory with some alkaline tendency.
Neutral Refractory Material Classification
The neutral refractory material does not show acid or alkalinity in its constituent materials, that is, it does not react with acidic slag and alkaline slag, and has good slag resistance. In addition, these materials have relatively high refractoriness and good resistance to rapid cold and heat. The neutral refractory materials include clay bricks, high alumina bricks, chrome bricks, silicon carbide bricks, carbon refractories, etc. The first two are not used in cupolas because they are expensive. There are reports of cupola furnace linings that use graphite furnace lining bricks as long gauge work abroad: its composition is graphite 37%, SiC10%, Al2O315%, SiO232%, Fe2O34%. The thermal conductivity of this kind of brick is 20 times that of ordinary refractory bricks. Taking advantage of this feature, people use it as an intermediate layer between the water-cooled furnace wall and the refractory brick to form a composite furnace wall. The built-in furnace wall has a suitable temperature rod, which reduces the erosion of the water-cooled furnace wall, prolongs the service life, and achieves the purpose of long-term use of the furnace without stopping.
Type: Resistance clay brick，Low creep clay brick，Arched clay brick，Carbon furnace clay brick
Property: High temperature resistance,Good chemical erosion resistant, Goood thermal stability and slag resistance, Corrosion-resistant, Various shapes and high quality
Application:industries of blast furnace, hot blast stove, electric furnace, refining furnace and glass furnace
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Type: High Alumina Brick, Alumina Bubble Brick
Property: High temperature resistance,Good chemical erosion resistant, Goood thermal stability and slag resistance, Corrosion-resistant, Various shapes and high quality
Application:industries of blast furnace, hot blast stove, electric furnace, refining furnace and glass furnace
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Type: chrome Brick, Chrome Corundum Brick and Magnesia Chrome Brick
Property: High temperature volume stability & strong slag resistance, Excellent thermal shock resistance, resistance to quenching and rapid thermal performance than magnesium bricks.
Application: mainly used for coal chemical industry, chemical industry furnace, alkali-free glass fiber kiln, waste incinerator and other key parts of the furnace.
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Type: Carbon Brick, Magnesia Carbon Brick, Alumina Carbon Brick, and Alumina Magnesia Carbon Brick
Property: Good thermal shock resistance, Low thermal coefficient of expansion,
Resisting erosion from all kinds of acid, alkali, salt and organic solvent.
Application: widely used in the blast furnace, also can be used for pickling bath, plating bath in the electroplating industry, for the dissolving tank in the paper manufacturing industry, for the reactive tank and storage tank in the chemical industry, and for the autoclave in the petrochemical industry.
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Type: Silicon Carbide Refractory Brick
Property:High heat conductivity, Good abrasive resistance, Excellent erosion resisting, Strong resistant to acid and alkali slag erosion.
Application: Lining of the aluminium cell and coke oven, Molten aluminum tube, and glass furnace, Kiln furniture used in the ceramic kiln, Blast furnace shaft, belly, or bosh of the large or medium ones, Znc retort lining, etc
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Neutral Refractory Material Application
From the point of view of neutral refractory materials, clay refractory products have good thermal stability and slag resistance, and are widely used. Almost all kinds of thermal equipment use clay bricks more or less. High-alumina refractory products have higher room temperature mechanical strength, load softening point and chilling and heating times, but their volume shrinkage is larger, and they are mainly used for steelmaking electric furnace tops. Carbon brick is an advanced refractory material with a refractoriness of about 3000°C, but it cannot be used in contact with oxidizing flames and slag containing a large amount of iron oxide.
Rongsheng Refractory Brick Application
We Rongsheng Company are able to supply all kinds of refractory bricks (also including other refractory material) that widely are used in Steel Industry, Petrochemical Industry, Metallurgy Industry, Noferrous Industry and Building Industry and suitable for different Furnace/Kiln, such as Glass Kiln, Tundish Furnace, Steel Casting Lable, Cement Kiln, Electric Arc Furnace ,Torpedo Ladle and other various Furnace. If you have interests for our refractory brick and kindly tell which furnace you are using, then our professional engineer will design the drawing with recommended suitable bricks in every part of your furnace/ kiln.
Glass Furnace
Tundish Furnace
Steel Casting Lable
Cement Kiln
Electric Arc Furnace
Torpedo Ladle
Rongsheng Refractory Brick Manufacture Lining
The initial step in producing brick is crushing and grinding the raw materials in a separator and a jaw crusher. Next, the blend of ingredients desired for each particular batch is selected and filtered before being sent on to one of three brick shaping processes—extrusion, molding, or pressing, the first of which is the most adaptable and thus the most common. Once the bricks are formed and any subsequent procedures performed, they are dried to remove excess moisture that might otherwise cause cracking during the ensuing firing process. Next, they are fired in ovens and then cooled. Finally, they are dehacked—automatically stacked, wrapped with steel bands, and padded with plastic corner protectors.
Rongsheng is a professional for Refractory / Fire Brick Manufacturer that can provide high quality and cheap refractory bricks for application in all kinds of kilns and furnaces. We rongsheng have the large scale warehouse and whole refractory brick manufactureing lining and professional employees, so we can provided high quality refractory materials.If you have any interest in our refractory/ Fire bricks or any other refractory materials, Welcome to Contact us for free quotation and more detailed information!
