Fireclay Brick with Al2O3 Content around 38%

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CMAX fireclay bricks are made from clinker clay by mixing, forming, drying, sintering and machining. The alumina content ranges from 36% to 48%. Fireclay bricks feature stable mechanical strength and good thermal shock resistance, withstanding high temperature up to 1750°C.



Petrochemical process heater
Heat treatment furnace
Tunnel kiln
Trolley furnace
Ceramic firing kiln
Cement rotary kiln
Glass melting tank
Blast furnace
Hot-blast furnace
Refractory heat face of furnace


Low thermal conductivity        High refractoriness  

High mechanical strength       Excellent thermal shock resistance

High Strength                           Lower shrinkage,
Good Alkalis Resistant           Good resistant to Thermal Shock














Bulk Density, g/cm3






Apparent Porosity, %






C.C.S, Mpa






Refractories Under Load (0.2Mpa),℃






Reheating Linear Change, %

1400x2h              0.1-0.4

1430x2h              0-0.1

1450x2h              0-0.2

1350x2h       0-0.3

1450x2h              -0.1+0.05

Al2O3 Content , %







Fireclay Brick with Al2O3 Content around 38%

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Q:What are the type, location and the physical and chemical effects of the refractory brick used in the cement rotary kiln?
But most people use high alumina brick or clay brick, G6 refractory brick. The specific masonry location, such as G4 refractory brick, standard brick, T38, OD, T39, according to the length of your rotary kiln, many kinds of refractory bricks are used in cement rotary kiln, the specific size of the inner diameter should be calculated in detail
Q:What are the differences between high alumina brick and high alumina refractory brick?
with the increase of the fire temperature and other indicators, Al2O3 content is also improving. the general content of Al2O3 in high alumina brick is more than 60% .
Q:How good is the hardness of corundum refractory brick?
The basic materials of corundum refractories are fused corundum or sintered corundum. the refractory brick containing more than 90% of Al2O3 is called corundum refractory brick. so, corundum refractory brick. Corundum has a high hardness (9 level of Mohs hardness) such as zirconium corundum refractory brick. Corundum refractory brick is resistant to acid well and melting point is also high, also known as pure alumina refractory brick products, , it has a good effect. These are closely related with the structure of the Al - 0 key, titanium corundum refractory brick, and other basic slag. It is used in high temperature oxidizing atmosphere or in reducing atmosphere. the metal and glass solution have good stability. a-Al2O3 is the main material of high temperature refractory brick and high temperature electrical insulating material .
Q:When the coal-fired steam boiler is built, it is necessary to build a common red brick between the refractory bricks. May I ask what is the requirement for this common red brick?
It has requirement for the external dimension (but not as strict as the requirement for the refractory brick), or it can not meet the thermal insulation effect and affect the appearance, and the appearance of the furnace wall is not beautiful
Q:what kind of refractory brick is suitable for 1300 degrees converter?
High alumina bricks of above 3 grade, containing more than 60% aluminum
Q:does the furnace wall use refractory bricks to keep the heat? Or use the insulation material to keep heat ?
generally is refractory insulation materials, casting materials.
Q:1200 degrees inside the furnace, lay a layer of refractory brick, what is the temperature outside?
except refractory brick, refractories include refractory concrete (refractory cement+aggregate), fire-resistant insulating layer (refractory cement+vermiculite powder or refractory cement + diatomaceous earth) and so on.
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:The form of boiler furnace wall
Q:What are the release agents of refractory bricks?
Alkalinity, the production process of alkaline, acid and alkali resistant transparent instant thickening powder, you can adjust the proportion according to the cost and needs of quality, environmental protection: One: Add the preservative into water to mix, after soaking one hour, then mixing evenly the production ratio, and then add the super core release agent into water to mix, add flavor pigment masterbatch into water to mix with water mixing, ensure completely dissolved, then add the waste oil, falvor is appropriate amount= release agent. Two, the newest recipe of release agent super core release agent masterbatch, waste engine oil, water, instant acidproof and alkaliproof transparent thickening powder, wire drawing powder, preservative, flavor and pigment= release agent super core wire drawing powder with water mixing, it is the most newly developed special core masterbatch and engine oil of Chengdu Hengfeng Hongye detergent factory, and it doesn't contain toxic solvents, especially 1, it has the following features, after thickening more than half an hour or so, mix evenly is ok, in a few seconds will waste oil and alkali: 10% of waste engine oil, 20% of release agent core masterbatch, 88% of water, 500g instant acidproof alkaliproof transparent thickening powder, 80g wire drawing powder, 1g pigment and preservative and lubricating oil and industrial grease, these integrate with water.

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