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RS Kiln Refractory Bricks

Focus on Producing High Quality Refractory Materials !

RS Kiln Refractory Bricks

Focus on Producing High Quality Refractory Materials !

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Andalusite Bricks for Hot Blast Furnace

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  2. Andalusite Bricks for Hot Blast Furnace

Andalusite Bricks are made of andalusite as raw material, adding powder such as sillimanite powder and mullite powder. The binder is added in proportion. And then a few production processing, such as the mixture is compounded, kneaded, shaped, and dried, and then fired at high temperature. Finally the andalusite refractory bricks.

Andalusite Bricks
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    Non contaminated andalusite from natural sources forms the raw material for these andalusite refractory bricks. Andalusite bricks take by hydraulic high pressure presses, vibration casting or slip casting ways. Andalusite grades with excellent pressure flow behaviour, at particularly high temperatures, and an excellent thermal shock resistance are achieved by especially designed bonds and defined and optimized firing.

    Andalusite Brick Composition

    Raw materials for making andalusite refractory bricks are like: mullite powder, andalusite fine powder, sillimanite fine powder, clay, silica fine powder, etc.

    Manufacturing Process of Andalusite Refractory Bricks

    • Firstly, according to the formula ratio, to prepare the raw materials for making andalusite bricks.
    • Secondly, put mullite powder, andalusite fine powder, sillimanite fine powder into a sand mixer and knead. Add clay and mix with 2% of the total weight of the raw material, continue kneading. Fine silicon powder is added and kneaded.
    • Next, forming by brick press.
    • Then, after the bricks are dried, they are sintered in a kiln to fire andalusite refractory bricks.
    RS Andalusite Bricks for Sale
    RS Andalusite Bricks for Sale

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      Andalusite Refractory Brick Features

      1. High-temperature resistance, wear resistance, and corrosion resistance.
      2. Good thermal shock resistance.
      3. Low creep rate.
      4. High load softening temperature.
      5. Can reduce harmful impurities.
      6. Good resistance to thermal spalling.

      In addition, Andalusite Bricks have high cold crushing strength, high refractoriness under load, high thermal stability, good creep resistance and thermal shock resistance. It is alternative product for high alumina bricks, used in the professional of the key parts of the furnaces.

      Physical and Chemical Index of Andalusite Bricks

      ItemRSGX-135RSGX-140RSGX-150
      Al2O3 % ≥656575
      Fe2O3 % ≤1.01.51.0
      Apparent Porosity % ≤222220
      Bulk Density g/cm3 ≥2.402.502.60
      Cold Crushing Strength Mpa ≥60

      (50)

      60

      (50)

      80

      (60)

      0.2 Mpa Refractoriness Under Load ℃ ≥152015501600
      Creep Rate (0.2Mpa) % ≤1350℃×20-50h1400℃×20-50h1500℃×20-50h
      0.20.20.2
      Thermal Shock Resistance (1100℃) Cycle ≥152020

      Advantages of Andalusite Refractory Bricks for Hot Blast Stove

      1. First of all, the service life of the hot blast stove has been extended, and the economic benefits have been improved for the enterprise.
      2. Good thermal shock stability increases the service life of the kiln lining and reduces the company’s expenditure on refractory materials.
      3. It effectively replaces the problem of instability of other refractory bricks in the high-temperature environment of hot blast stove.

      Application of Andalusite Refractory Bricks

      In order to produce low iron steel, the Andalusite Bricks can be used for hot blast furnace walls, grid brick, furnace roof, combustion chamber (andalusite low creep series). Together with special products with very good thermodynamic and corrosion-resistant characteristics for glass furnaces, and for areas with medium temperature in thermal regenerators, forehearth covers, and feeder expendables.

      RS Andalusite Bricks Supplier
      RS Andalusite Bricks Supplier

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        RS Refractory Brick Manufacturer

        RS refractory brick manufacturer is specialized in refractory bricks and castable refractory production. Our refractory products have been exported to nearly 60 countries and regions in the world. Our refractory bricks product technology is mature, the refractory castable production line has been put into production, and the daily production capacity can reach up to 150t / day. If your hot blast furnace needs andalusite refractory bricks, please contact us. We can assist you in the selection and construction of refractory materials.

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