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The price of high alumina refractory brick is decided by those factors

Number of visits: Date:8/18/2016

  High alumina brick, alumina content in more than 48% of a silicate aluminum refractory material. By alumina or other higher raw material forming and calcined alumina content. Thermal stability, high refractoriness in more than 1770 ℃. Good slag resistance. High alumina brick is the most widely used type of refractory brick. As a result, high alumina brick prices directly affect the enterprise production cost. Below, find refractory network is in line with the "value = price" principle of reciprocity to teach you how to measure price of high alumina brick.

  The influence of aluminium content on the price of high alumina brick

  High aluminum refractory brick is one of the important work in the heat of structural strength, load softening deformation temperature of this feature is usually used to assess. Also measure its high temperature creep to reflect the structure of high temperature strength. The test results show that the refractoriness under load increase with the increase of Al2O3 content. High alumina brick factory, according to the 3 oxidation 2 aluminium Al2O3 content into three levels: level Ⅰ - Al2O3 content > 75%; Ⅱ level - Al2O3 content is 60 ~ 75%; Ⅲ level - 48 ~ 60% Al2O3 content is, in general, three levels will be divided to three high alumina brick price ladder.

  High alumina brick alumina content in more than 48% belong to neutral refractory material. By alumina or other higher raw material forming and calcined alumina content. High thermal stability, refractory brick factory degrees above 1770 ℃. Good slag resistance, used for building steel-making furnace, glass furnace, cement rotary kiln lining. This product has the high temperature creep and have good thermal shock resistance, erosion resistance and other advantages, is suitable for large and medium-sized hot blast stove.

  Production technology of high alumina brick and clinker clay brick more similar, the difference is that the ingredients in the clinker ratio is higher, can be as high as 90 ~ 95%, before breaking the clinker grading sorting and screening in addition to iron, firing temperature is higher, such as Ⅰ, Ⅱ high alumina brick with tunnel kiln firing when the general is 1500 ~ 1600 ℃.

  The performance of high alumina brick is one of the important factors affecting price of high alumina brick

  A, refractoriness

  High alumina brick than clay refractoriness and half silica brick are high refractoriness, 1750 ~ 1750 ℃, belongs to high-grade refractory materials, the higher the refractoriness, the better the performance, prices are relatively will be weighted to ascend.

  B, refractoriness under load

  Al2O3 high because of high aluminum products, miscellaneous quality, forming a fusible vitreous less, so the refractoriness under load is higher than clay brick, but not because of mullite crystal form reticular tissue, so the silica refractoriness under load is still not high.

  C, slag resistance

  Al2O3 more high alumina brick, close to neutral refractory, slag resistance to acid and alkaline slag erosion, due to containing SiO2, so the ability of resistance to basic slag than weak ability to resist acid slag.

  High alumina brick is mainly used in lining of blast furnace, the hot blast stove, electric furnace roof, furnace and reverberatory furnace, rotary kiln lining. In addition, high alumina brick is widely used as open hearth regenerative checker brick, pouring system with the plug head, nozzle brick, etc. But prices are higher than clay bricks, high alumina brick by brick can meet the requirements of local don't have to use high alumina brick.

  The influence of high alumina brick size price

  High alumina brick size generally divided into gb, unique shape, special shape. National standard of fixed size, production enterprise can be mass production, so the price is relatively low; And special shape, different size and shape are not fixed, in addition to the general abnormity brick, generally need to custom manufacture, this will need to open mold cost and difficulty of production also according to the complexity of shape of the increase, so the price is relatively high.

  These basic can determine the characteristics of high alumina brick high alumina brick the price at which level? Of course still need to be combined with the actual production needs, taken together, do not covet is cheap and delay the production schedule.

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