High alumina refractories brick

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Specifications

Fire brick
1.ISO 9001 approved,
2.With high quality and competitive price,
3.Standard and special shape.

Fire-clay refractory brick.
1. N-1
AL2O3 (%)>42
Refractoriness >1750
Refractoriness under load KD>1400
Permanent linear change onreheating
1500*2h
1450*2h
1400*2h:+0.1; -0.4
Apparent Porosity(%)<22
Cold crushing strength (Mpa)>29.4

2. N-2a
AL2O3 (%)>40
Refractoriness >1730
Refractoriness under load KD>1350
Permanent linear change onreheating
1500*2h
1450*2h
1400*2h:+0.1; -0.5
Apparent Porosity(%)<24
Cold crushing strength (Mpa)>24.5

High-alumina refractory brick
1. LZ-75
AL2O3 (%)>75
Refractoriness>1790
Refractoriness under load KD>1520
Permanent linear change onreheating
1500*2h:+0.1; -0.4
1450*2h
1400*2h
Apparent Porosity(%)<23
Cold crushing strength (Mpa)>53.9

2. LZ-65
AL2O3 (%)>65
Refractoriness >1790
Refractoriness under load KD>1500
Permanent linear change onreheating
1500*2h:+0.1; -0.4
1450*2h
1400*2h
Apparent Porosity(%)<23
Cold crushing strength (Mpa)>49

3.LZ-55
AL2O3 (%)>55
Refractoriness >1770
Refractoriness under load KD>1470
Permanent linear change onreheating
1500*2h:+0.1; -0.4
1450*2h
1400*2h
Apparent Porosity(%)<22
Cold crushing strength (Mpa)>44.1

4.LZ-48
AL2O3 (%)>48
Refractoriness >1750
Refractoriness under load KD>1420
Permanent linear change onreheating
1500*2h
1450*2h:+0.1; -0.4
1400*2h
Apparent Porosity(%)<22
Cold crushing strength (Mpa)>39.2

Fire clay brick SK-32

Item

Standard

AI2O3(%)

30

Fe2O3 (%)

3.5

Refractoriness (SK)

32

Refractoriness under load,

0.2MPa, Ta, (°C)

1300

Porosity (%)

22-26

Bulk density (g/cm³)

2.05

Cold crushing strength (MPa)

25

Thermal expansion at 1000°C (%)

0.6

Fire clay brick SK-34

Item

Standard

AI2O3(%)

38

Fe2O3 (%)

2.5

Refractoriness (SK)

34

Refractoriness under load,

0.2MPa, Ta, (°C)

1350

Porosity (%)

19-23

Bulk density (g/cm³)

2.10-2.15

Cold crushing strength (MPa)

25

Thermal expansion at 1000°C (%)

0.6

Fire clay brick SK-36

Item

Standard

AI2O3(%)

50

Fe2O3 (%)

2

Refractoriness (SK)

36

Refractoriness under load,

0.2MPa, Ta, (°C)

1450

Porosity (%)

20-24

Bulk density (g/cm³)

2.30-2.40

Cold crushing strength (MPa)

45

Thermal expansion at 1000°C (%)

0.3


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Q:what effect does big mortar joints of the boiler refractory brick have on the boiler?
The ventilation leakage。 Now the larger boilers are generally used refractory pouring material one-time pouring, the arch is easy to collapse . 2, shrinkage and expansion of brick will make the bricks fall. 1, do not use the refractory brick. too large seam will effect the tightness of furnace wall , and the water wall is easy to form dew and be corroded and to leak smoke.
Q:how to test the high alumina refractory brick mixed alumina?
Test
Q:Why in the production of the brick to detect the volume density
Density is the property of material, different density of materials, density of the same kind of material is not up to standard, affecting performance.
Q:Can the fire clay to be reused?
Refractory soil cannot be reused.Clay refractory soil 1, characteristics and uses: Clay refractory brick is a weak acid refractory material, its thermal stability is good, suitable for hot air furnace, all kinds of boiler lining, and flue, smoke room, etc.. 2, product specifications form: standard shape, general, special-shaped and special-shaped brick. Physical and chemical properties of fireclay bricks.
Q:What are the differences and uses of non clay bricks, non clay bricks and ordinary red bricks?
Just bricks without claySuch as foam hollow bricks, straw bricks, and some other cement bonded solid, hollow bricks and so on
Q:Are there any differences between insulating bricks and refractory bricks?
The insulation performance of thermal conductivity of insulating brick in general 0.2-0.4 (average temperature 350 - 25 DEG C) w/m.k, and the thermal conductivity of refractory brick in 1 (the average temperature of 350 - 25 DEG C) above w/m.k, which can obtain the insulation performance of insulating brick than refractory brick insulation performance is much better.
Q:What is composite sintering insulation bricks?
The brick belongs to the porous brick and has good heat preservation performance. Reached the national 50%~65% energy efficiency standards. High safety (no crack, no seepage), strong durability (with building life), economy (self insulation, no need to increase the cost of insulation).
Q:98% acid tank cofferdam can use acid resistant brick?
Hydrogenation unit of hydrogen and high pressure and temperature, the system memory in the U2S and NH3, therefore, the corrosion problem of hydrogenation unit should also be emphasized, main methods to solve the corrosion problem of hydrogenation device is reasonable material, strengthen the surveillance and detection in use.
Q:Refractory bricks in cement kilns are dangerous wastes
Magnesia chrome brick: Hang kiln, used for firing zone, the disadvantage is the poor thermal shock resistance, plus six Cr price is highly toxic, the production and use of the national magnesia chrome brick is gradually reduced, the brick production unit as soon as possible to find alternatives.
Q:What are the differences between sintered bricks and refractory bricks?
Sintered bricks belong to a type of refractory bricks.

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