Cordierite-mullite Refractory Brick

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Specifications

Cordierite-mullite brick
1. low thermal expansion coefficient,
2. excellent stability of thermal shocking

Alumina-Silica Refractory Series Products

Cordierite-mullite brick is of low thermal expansion coefficient, excellent stability of thermal shocking, it is used in assembly brick for hot blast stove.
Sintered mullite brick mineral component is mullite phase. It has the advantage of high temperature structural strength, strong resistance to chemical corrosion. It is used in the lining of high temperature kiln.
Silimanite bricks possesses the better refractoriness temperature under load and the good stability of thermal shocking. It is mainly used in the blast furnace, wind pipe of the blast heating cupola, the lime kiln, the discharging channel and cover board of the glass melting kiln.

Physical and chemical index :

Sillimanite Bricks
Cordierite brick
Corundum-Mullite Brick
Cordierite-Mullite Brick
M-68
M-72
GCS
JQS
AM-75
AM-80
JM
Al2O3 %
≥68
72
≥55
55±5
≥75
≥80
≥50
Fe2O3 %
≤1.5
≤1.5
≤1.5
≤1.5
≤2
MgO %
2.0
1.73~3
SiO2 %
≤45
Apparent Porosity %
≤21
≤19
≤17
≤25
≤17
≤17
≤23
Bulk Density g/cm3
≥2.45
≥2.50
≥2.45
≥2.30
≥2.55
≥2.60
≥2.30
Cold Crushing
Strength Mpa
≥50
≥60
≥55
≥40
≥70
≥70
≥70
Modulus of
Rupture Mpa
≥15
≥15
0.2Mpa Refractoriness
Under Load T
0.6
≥1580
≥1600
≥1550
(T
2)
≥1400
≥1680
≥1700
Reheat liner change 2h
1450°C
±0.2
Thermal
Shock Resistances
100°C water cycles
≥15
≥100
20-1000°C
Thermal Expansich
10
-6/°C
4.5-4.9

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Q:What are the types of building blocks?
Ordinary housing: building brick (clay brick), and non sintered brick (sand lime brick, fly ash brick, cement brick, etc.)
Q:Advantages and disadvantages of external formwork and self thermal insulation block
Exterior wall sandwich thermal insulation technology, the exterior wall sandwich insulation is placed between the inside and outside wall panels of the outer wall, and the inner and outer wall can be made of concrete hollow block.Advantage:1) the inner wall film and insulation material form effective protection, the material selection of heat insulation material is not high, polystyrene, glass cotton and urea formaldehyde on-site pouring material can be used;2) the construction season and construction conditions are not very high, and it does not affect the winter construction. In Heilongjiang, Inner Mongolia, northern Gansu and other cold areas have been given some applications.Shortcoming:1) in non cold areas, this kind of wall is thicker than traditional wall;2) the inner and the outer wall pieces need to be connected by connecting pieces, and the structure is more complicated than the traditional wall;3) periphery structure of "bridge" more. In the earthquake zone, building circle beam and constructional column settings, "bridge" more efficiency of thermal insulation materials is still not fully play.4) outside the walls by the outdoor climate, the temperature difference between day and night and the large temperature difference between summer and winter, easy to cause the wall cracking and leakage of rainwater.
Q:Difference between inorganic insulation material and organic thermal insulation material
Manufacturing distinction:1, organic insulation materials mainly from petroleum products, including foam polystyrene board (EPS), extruded polystyrene board (XPS), spray polyurethane (SPU) and polystyrene particles. From a nationwide perspective, the organic exterior wall insulation system occupies more than 75% of the current external thermal insulation Market in our country.2, inorganic heat preservation material including expanded perlite, hollow glass beads, rock wool, mineral wool, perlite, glass wool and lightweight block self insulation system, mainly based on inorganic materials such as stone, glass, industrial waste and so on. As the state attaches importance to and requirements of the fire protection safety standards for wall materials, the market share of inorganic thermal insulation materials will be greatly improved.
Q:What is the price of refractory bricks
Insulating brick is a refractory brick often used in kilns to reduce the heat loss of kilnsSo as to ensure the practical efficiency of kiln and bring more benefits.There are many kinds of thermal insulation bricks, and there are many refractory manufacturersAs to how much bricks should be paid, a detailed consultation should be made to the refractory bricks manufacturerHave some understanding of the properties, technologies, raw materials and so on, and make a decisionDifferent types of insulation brick prices are different, the price is relatively cheap, lightweight clay insulation brick 1The market price is 1.3 yuan a pieceThe price of mullite heat preservation brick 0.8, the market price of 4.62 yuan a pieceDepending on the area, the price of insulating bricks will fluctuate somewhat
Q:Advantages and disadvantages of wall insulation system?
The advantages of internal insulation: insulation walls, paint inside the wall, and direct people or other biological contact, in order to ensure human or biological health in insulation coating insulation at the same time, we must first ensure that the paint is non-toxic, no volatile substances.
Q:What are the insulation materials for heating buried pipelines?
The heat preservation layer is composed of antirust paint, heat insulating material, moisture-proof layer (used for pipeline in the trench), protective layer, anticorrosive layer (used for trench or directly buried pipe) and top coat (or fireproof coating).The waterproof layer can be used asphalt or aluminum foil protective layer with glass cloth or galvanized steel.
Q:Outside brick wall, inside brick wall how to return a responsibility?
Use in indoor environment using brick, not so bad, are generally Youmianzhuan, of course there are all the tiles, bricks, colorful patterns, the appearance of small size error.
Q:What's the difference between refractory bricks and insulating bricks?
Insulation brick mainly is used to heat, reduce heat loss, refractory brick is mainly used to withstand flame burn. Bricks usually do not contact fire directly, while refractory bricks usually contact the flame directly.
Q:Insulation brick should pay attention to external walls?
In each segment or block the tiles are from bottom to top paste, from the line of position the next layer of hypodermis first brick hidden good ruler, to hold the first leather tiles, pull in tile lines as the upper skin paste standard.
Q:What is the price of fireproof insulation material?
A preliminary understanding of price through online preliminary understanding, now generally the size of the opening of the cable insulation material manufacturers are on business, early online now have a preliminary understanding, manufacturers investigation after considering cooperation.

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