Hot blast stove with low creep series high alumina brick

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项目
item

DRL—155

DRL—150

DRL—145

DRL—140

DRL—135

DRL—130

DRL—127

Al2O3, %

75

75

65

65

65

60

50

显气孔率,%
A.P.

20

21

21

22

22

22

23

体积密度  g/cm3
B.D

2.65

2.65

  2.50

2.40

2.35

2.30

2.30

常温耐压强度,Mpa
CCS

60

60

60

55

55

55

50

蠕变率,%
Creeping Rate

0.8

0.8

0.8

0.8

0.8

0.8

0.8

重烧线变化,%  1500x2h
P.LC.          1450x2h

0.1—-0.2

0.1—-0.2

0.1—-0.2

0.1—-0.2

0.1—-0.4

0.1—-0.4

0.1—-0.4

抗震稳定性(1100℃,水冷)
Thermal Shock(1100℃water)

(炉顶,炉壁砖)提供数据
Actual value should be issued for roof and wall bricks

Product features: hot blast stove with low creep series high alumina brick to corundum mullite "three stone" and excellent yangquan bauxite clinker as the main raw material, after high pressure forming, high temperature sintering. Products with high refractoriness under load and high temperature creep resistant performance is good, good thermal shock resistance, is the first choice for large and medium-sized stove material.


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Q:The harm of wet bricks used in refractory bricks
Increase the natural protection time, increase the baking time, or water can not discharge, this will cause swelling deformation of furnace wall.
Q:when to replace the worn refractory bricks in rotary kiln?
Wear out at least 23.
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.
Q:What are the main raw materials of refractory brick and runner brick?
Types of refractory bricks are divided into low-grade and high-grade. generally, siliceous, semi siliceous and high aluminous runner brick brick have higher requirements. If it needs to contact melting in high temperature molten steel directly, then it is high alumina(the main raw material is clinker of bauxite with high alumina, corundum( brown corundum and white corundum), the refractoriness is high, lower than 1580 DEG C temperature, but the actual using temperature reaches 1630 DEG C
Q:How to use the winding packaging machine to pack refractory bricks
Over 150KG the most common winding machine can pack, if it is light or the goods scatter, then add capping or pre-drawn device is all right.
Q:can castable refractory replace refractory bricks in rotary kiln?
No, there is expension gap between bricks, and that is no solution when the castable refractory expend.
Q:Are there any good improvement measures for the always collapse of the previous vaulted tunnel kiln built by refractory bricks?
refractory castable integrally casting
Q:How to increase the service life of high temperature refractory bricks?
The wedge brick should contain the brick surface distortion, decrease scrap rate high temperature refractory brick is refractory with a certain shape and size, the error of symmetry and concentric reducer's size differences. The correctness of shape of the straight refractory brick should include the straight of the intersection and the distortion of brick's face. Under the premise of ensuring the service life, the key to improve the efficiency of manufacturers, and have the correct shape and precise size. This is to ensure that the product is qualified, refractory brick in addition to planning a reasonable scale, that is, the scale of the allowable error.
Q:The service life of the refractory brick of the intermediate frequency electric furnace, how long is the replacement period.
There is no standard. As long as the induction coil can be fixed and furnace lining can be built, the service life will be different. Replace it if it's broken, and there is no problem to take it apart. Buy a backup. And the textures of refractory brick are not the same in different places.
Q:How to test the various components of the refractory brick?
It is difficult to distinguish if it is mixed together, fully smashing and mixing. Then assay. Or testing after smashing and separating.

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