Refractory Fireclay Brick- SK32 Low Apparent Proposity

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20 m.t.
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50000 m.t./month

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Fireclay bricks are made from clinker clay by mixing, forming, drying, sintering and machining. The Al2O3 content ranges from 36% to 42%.
Fireclay bricks feature stable mechanical strength and good thermal shock resistance, withstanding high temperature up to 1750.
They are commonly applied as refractory lining directly exposed to heat or backup insulation layer in all kinds of industrial kiln or laboratory furnace.

Low thermal conductivity
High refractoriness
High mechanical strength
Excellent thermal shock resistance
Non standard sizes and shapes are available upon request

Petrochemical process heater
Heat treatment furnace
Ceramic firing kiln
Cement rotary kiln
Glass melting tank
Backup insulation

ITEM: ZGN42 GN42 RN42 RN40 RN36
Al2O3 ≥ %: 42 42 42 40 36
Fe2O3 ≤ %: 1.6 1.7 - - -
C. C. S. Mpa≥ : 58.8 49 29.4 24.5 19.6
Refractoriness≥ º C: 1750 1750 1750 1730 1690
Permanent Linear Change ≤ %
1350º C x 2hrs: - - - 0~-0.3 0~-0.5
1450º C x 3hrs: 0~-0.2 0~-0.3 0~-0.4(x 2hrs) - -
Refractoriness under Load(0.2 Mpa)≥ : 1450 1430 1400 1350 1300
Apparent Porosity ≤ %: 15 16 24 24 26

1) ZGN42 and GN42 are used in blast furnace.
2) RN42, RN 40 and RN 36 are used in hot blast stove.
3) Fireclay bricks can be designed and manufactured upon customers requirements.

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Q:What kind of refractory brick is used for industrial furnace?
high alumina brick, Corundum mullite
Q:What raw materials can be added to fireclay brick to respond to the urgent cold and urgent heat?
The effect of adding andalusite is better
Q:air-cooled razheng times of magnesia-alumina spinel refractory bricks
The ingredients are magnesium, oxygen, and aluminum. the components of spinel refractory can be magnesia-alumina spinel with excessive aluminium oxide, or magnesia-alumina spinel with excessive magnesium oxide. excessive magnesium oxide and aluminium oxide can form magnesia-alumina spinel in above 1700 degrees.
Q:Do refractory bricks need to be sent to the lab to test after arriving the site?
Other is nothing, generally it does not need, whether single weight meets the requirements, whether the appearance is regular, usually only to see whether the size is standard, it is set in the procurement
Q:What is the refractory temperature of refractory bricks?
First look at the used parts of refractory brick, anti stripping performance, these are the most basic performance factors, the refractory temperature of high alumina brick is 1770 -1790 degree, the refractory temperature of clay brick is 1380-1570 DEG C, record the anti acid corrosion data of refractory bricks, the compressive strength of refractory bricks, at the same time, you should analyze each part of the furnace pH index and sintering temperature of working. When purchasing refractory bricks, you need to pay attention to many factors, high temperature creep property, softening temperature under a fixed load, 6548, volume stability at high temperature. Because the production of the product is affected by the weather and fuel energy, etc.. 186, select the suitable refractory bricks
Q:Blend 12% fireclay and 88% refractory cement. Moderate water and mud are used to pile up firebricks?
If the temprature is below 1200 degrees, the clay castable refractory can be used at what temprature, or use lightweight clay thermal insulation bricks. Thus, the furnace body is not easy to crack. The service life will be long.
Q:What is the perservation method for refractory bricks used for cement kiln?
The place should be dry and ventilated. Remember that the packaging can't be damaged. If is not used for a long time, put desiccant next to the bricks. Then have thermoplastic packaging again, it won't get damp. Under normal circumstances, it can be stored for 3-5 years and won't be hairy
Q:should clay or refractory cement be used to lay refractory bricks?
structure strength of this brick lining is not good, apply some refractory mud, only use some virgin clay and corundum, many of the traditional approaches are very simple, mullite and carbon slurry, the specific products are selected according to the selected material and water glass or organic binder. binding agent can choose phosphate, silica and high alumina, clay is one part of the refractory clay, there are many kinds of refractory slurry according to the material, clay-based mud does use refractory cement and corrosion resistance is low
Q:What is the main use of refractory brick?
Almost all high temperature furnace needs of the needs refractory bricks, such as blast furnace for iron smelting, high temperature differential thermal analyzer also use it, refining furnace, converter for steelmaking, muffle furnace, electric furnace and drying equipment. the uses are wide
Q:What refractory mortar is better if masonrying 4 meters height and 114 mm width of refractory brick
The selection of refractory mud should keep the principle of homogeneous phase with refractory bricks, that is to maintain the same material, according to the suitable temperature, choose appropriate binding agent compensation measuring forging Yao tic surprised boxing super man (phosphate, sodium silicate, or other organic combination), composite high performance admixture, it can be combined better in high temperature.

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