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:How to classify light refractory bricks?
0, perlite insulation brick.2 and so on; according to bulk density, the same lightweight refractory materials can be divided into 0, poly light high aluminum, lightweight brick. Light brick and alumina hollow ball brick.8, 1, 1 light refractory brick generally is classified according to the raw material composition and bulk density
Q:The renewal of refractory brick internal the lime kiln belongs to overhaul. In the absence of production, are the replacement of valve and sporadic projects also considered overhauls? Or routine maintenance!
The replacement of fire brick is a major overhaul. If the part causes the furnace shutdown, which is also a major overhaul, so the key of overhaul is depends on what reason it is
Q:What's the reason of cracks in refractory bricks?
This is inorganic nonmetallic material
Q:Will the heat be taken away by the refractory brick
No, refractory bricks can't be burnouted
Q:Can you direct the clay brick walls embryo
Must not。 Not damp, damp, air tight, poor pressure bearing, bad adhesion between bricks and bricks
Q:What are the hazards of solid clay bricks?
The prohibition or restriction of high energy solid clay brick production, the development of low energy consumption, thermal insulation of new wall materials, insulation performance is good, not only can save energy in production, but also can make the function of the building can be effectively improved, reducing the energy consumption in buildings in use.
Q:how heavy are boiler of six tons plus refractory bricks?
The total weight is about 60 tons, 6 tons of bulk boiler steel, insulation materials, sealing materials, refractory material
Q:why the color of refractory brick is white after high temperature firing when the meteorite is black after the burning?
There are different reasons. Meteorolites can mainly be divided into three types, iron meteorites (iron nickel alloy): Stone meteorites (the main component is silicate), and stony iron meteorites(the mixture of iron and silicate)
Q:What are the type, location and the physical and chemical effects of the refractory brick used in the cement rotary kiln?
And T209
Q:What is the meaning of special shaped refractory brick material n-2b?
In fact, there are many kinds of refractory bricks, titanium, high alumina refractory brick, after drying. The mineral composition of the clay brick is mainly kaolinite (Al2O3·2SiO2·2H2O) and 6% ~ 7% impurities (K, etc.). Clay refractory bricks are iron oxide sintered by 50% soft clay and 50% hard clay clinker ingredients according to a certain granularity requirements under the high temperature of 1300 ~ 1400 degrees), perlite

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