Hot blast stove with low creep brick of andalusite

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Product Description:

热风炉用低蠕变红柱石砖

项目
Item

LHZ—65

LHZ—60

LHZ—55

LHZ—50

Al2O3, %

65

60

55

50

显气孔率,%
A.P.

20

20

20

20

体积密度,g/cm3
B.D

2.60

2.50

2.50

2.40

常温耐压强度,MPA
CCS

50

50

50

50

蠕变率,%(20—50h)
Creeping Rate

0.2

0.2

0.2

0.2

重烧线变化,%(1400℃x4h)
P.L.C.

0—0.3

0—0.3

±0.2

±0.2

荷重软化开始温度,℃
RUL

1650

1600

1600

1580


Specification:


Product characteristics; Hot blast stove with low creep brick of andalusite using selected andalusite, corundum, mullite as main raw materials, through high pressure molding, high temperature sintering, andalusite in 1350 ℃ formation of mullite products surface with strong "welding" effect, so that the products good thermal shock resistance, high refractoriness under load, high temperature creep resistant performance is good, good thermal shock resistance, is a Dutch type technical characteristics of hot blast stove with refractory.



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Q:application of phosphate refractory bricks
The 4 properties of phosphate refractory bricks: (1) high strength wear resistance (2) and chemical erosion (its alkali resistant ability is better than that of clay brick and high alumina brick) (3) and good thermal shock resistance (4) high load softening temperature in rotary kiln, kilneye, kiln Zone door cover, cooling machine and lining refractory brick falling parts easy to loose
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:Which is better for tunnel kiln suspended ceiling, refractory brick or ceramic fiber module ?
Refractory bricks is better.
Q:refractory bricks of fireclay
According to the preparation process, it can be divided into bricks, high alumina brick, magnesia brickand so on, such as refractory clay brick, and ordinary brick; according to the shape and size, it can be divided into standard brick and silica brick, it can withstand all kinds of physical and chemical changes and mechanical action at high temperature; silica brick can be used as high-temperature building materials and structural material to build kiln and kinds of thermal equipments. Refractory material and fused brick with a certain shape and size are called refractory brick for short.
Q:The stove which made of refractory bricks and fireclays will produce cracks after being used. How to solve this problem?
The use of low expansion materials will be better. But as for the stove, the appearance of crack is attributed to the selected materials or the environment. And when the temperature is not high, there still seems to be crack, so through expansion joint reservation, not allowing itself to crack
Q:is it good to use firebricks to preserve the heat of rto furnace? Is there any other good ideas?
1. what variety and grade of refractory materials should be chosen to build all parts of the industrial furnace?; 2. is the origin of these materials be assured? mesothern resistance furnace, lightweight refractory brick, refractory fiber, bead brick of 1000 degrees; fuel heating furnace, refractory clay brick, high alumina brick, silica brick, carborundum brick, refractory castable, the plastic refractory of 1300 degrees; heat treatment furnace, refractory clay brick, refractory fiber of 1100 degrees; high temperature salt bath furnace, refractory clay brick, high alumina brick, zircon brick, refractory castable of 1300 degrees; high temperature resistance furnace, lightweight refractory brick, high aluminum bricks, lightweight alumina brick, lightweight refractory clay brick of 1400 degrees; molybdenum wire furnace, alumina brick, corundum brick, carborundum brick, finished alumina hollow ball product of 1650 degrees; cupola, refractory clay brick, carborundum brick, dolomite Brick, carbon brick, graphite brick of 1650 degrees; arc furnac, high alumina brick, silica brick, magnesia brick, magnesia brick, magnesia chrome... Corundum brick, carbon brick, magnesia chrome brick, magnesia brick, high aluminum brick, silica brick, finished alumina hollow ball product of 1700 degrees; cupola, refractory clay brick of 1650 degrees;
Q:General used refractory brick T-20 / T-39/ T-206 specifications and dimension
No T-206 model (we produce the clay) T-20 and T-39 are the size of 230*length, 113* width and 65/45 thickness, T-20 is a vertical arch brick and T-39 is horizontal arch brick.
Q:What materials make of clay insulating fireclay brick?
Clay insulation bricks are general according to the different origins of raw materials, not the same
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:How much is the silica powder in refractory bricks.
It's not easy to construct, also need to consider the technical and economic indexes, DH3, 1 kg silica powder replaces 1 ~ 3 kg cement, which is the reason why silicon powder was not used and spreaded in concrete in past, choose some silica power fume. In general, with the smoke escaping by special capture device for collecting and processing To determine the mixing method of silica powder, when mixing silica powder, you should find out the optimal dosage in order to obtain the best results, as the study, the content is 5% ~ 30%, H, the mixing of super high strength concrete, use same amount of silicon powder to replace equal cement to main same fluidity, Microsilica or Silica Fume, it is mainly according to the design requirements, and does not reduce the amount of cement, sand and stone to adjust the optimal dosage of water reducer, when deciding the best mixing amount of silica fume, the concrete is too sticky, most use naphthalene water reducing agent.

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