Where to buy refractory products at low price?

For steelmaking, metallurgy and chemical industry, safety is as important as cost, so both quality and price are essential, that means it’s a key issue to choose the right refractory materials and products.

As we all know that China is the world’s largest producer and exporter of refractory materials, and Henan Province is the largest production base in China as Henan is rich in the raw materials. It is wise to buy refractory products from suppliers located in Henan, because there are lots of choices and usually these companies supply products with good quality and at a relatively lower price.

To select a good company to buy refractory products and materials, firstly, we need to see when it is founded. A long history does make a company more professional and experienced. Secondly, whether it has its own research team. Only with that can a company meet the requirements of different customers. Thirdly, we should notice its annual output. It shows a company’s scale and sales status. Of course the three factors are not the whole elements to consider, but they are truly worthy of our attention.

When you read here, I guess that you are really seeking refractory suppliers and are in need of refractories. Just try to look for company in the consideration of the above three factors, you will finally find your right supplier.

The refractory material refining quality steel casted by Henan province has reached top level of China

Currently, tourisms learn from Technology Department of Henan that the project of refractory material refining quality steel undertook by Luoyang Refractory Research Institute has passed acceptance check.. By carrying such an project, they have solved the key technology problem of short life span of LF+VD refining ladle refractory material that used in casting steel, and the life span increases from 85 heats to 135 heats. The person in charge of Technology Department of Henan has said that such a refractory material project has obtained two patents, formed productive capacity of 15 thousand ton per year and increased output value is 133 million. The appearing temperature of refractory material used by refining quality steel is lower 60℃～80℃ than ordinary ladle, which obviously reduces the power consumption of per ton steel, and very important for saving graphite and reduce heat loss of ladle. Now, with industrial structural adjustment of steel industry and increase of high quality special steel, which project carrying by Technology Department of Henan will promote such a proceeding in a big degree. If the factory in China can turn 5 million ordinary steel making to refining steel making per year, which will bring 12.5 billion income for steel industry, and the social benefits is obviously.

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             Refractory materials must be chemically and physically stable at high temperatures. Depending on the operating environment, they need to be resistant to thermal shock, be chemically inert, and have specific ranges of thermal conductivity and of the coefficient of thermal expansion.

          The oxides of aluminium (alumina), silicon (silica) and magnesium (magnesia) are the most important materials used in the manufacturing of refractories. Another oxide usually found in refractories is the oxide of calcium (lime). Fire clays are also widely used in the manufacture of refractories.

      Refractories must be chosen according to the conditions they will face. Some applications require special refractory materials. Zirconia is used when the material must withstand extremely high temperatures. Silicon carbide and carbon (graphite) are two other refractory materials used in some very severe temperature conditions, but they cannot be used in contact with oxygen, as they will oxidize and burn.

      Binary compounds such as tungsten carbide or boron nitride can be very refractory. Hafnium carbide is the most refractory binary compound known, with a melting point of 3890 °C. The ternary compound tantalum hafnium carbide has one of the highest melting points of all known compounds (4215 °C).

     Refractories can be classified on the basis of chemical composition.

Acidic refractories

     They consist of mostly acidic materials like alumina (Al₂O₃) and silica (SiO₂). They are not attacked or affected by acidic materials, but easily affected by basic materials. They include substances such as silica, alumina, and fire clay refractories.

Neutral refractories

      These are used in areas where slags and atmosphere are either acidic or basic and are chemically stable to both acids and bases. The main raw materials belongs to, but not confined to, R₂O₃ group. The common examples of these materials are alumina (Al₂O₃), chromia (Cr₂O₃) and carbon.

Basic refractories

      These are used on areas where slags and atmosphere are basic; they are stable to alkaline materials but could react with acids. The main raw materials belong to the RO group to which magnesia (MgO) is a very common example. Other examples include dolomite and chrome-magnesia.