Steelmaking eaf partly high alumina brick

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       炼钢电炉顶用高铝砖

项目
item

DL—80

DL—75

BDL—80

BDL—75

Al2O3 %

80

75

80

75

显气孔率,%
A.P.

19(21)

19(21)

18(20)

18(20)

常温耐压强度,MPa
CCS

75

65

60

55

重烧线变化,%(1500℃x2h)
P.L.C

0—-0.3

0—-0.3

±0.2

±0.2

荷重软化开始温度,℃
Refractoriness

1530

1520

1530

1520

热震稳定性(1100℃,水冷)
Thermal shock (1100℃water)

提供数据
Issue actual value

8

8


Specifications:


Product features: high alumina brick to select of steelmaking furnace be yangquan super bauxite clinker asthe main raw material, after high pressure forming, high temperature sintering. The main mineral composition as corundum and mullite phase, has excellent high temperature mechanical properties and resistance to chemical attack. Especially not burning products, appearance is more accurate size, good thermal shock stability.


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Q:The renewal of refractory brick internal the lime kiln belongs to overhaul. In the absence of production, are the replacement of valve and sporadic projects also considered overhauls? Or routine maintenance!
The replacement of fire brick is a major overhaul. If the part causes the furnace shutdown, which is also a major overhaul, so the key of overhaul is depends on what reason it is
Q:How to make refractory bricks and boiler wall adhesion more firm?
If the condition, the user heat-resistant steel welding grip nails, expansion joints can not be too big.. Also to use high temperature aluminum brick, high temperature resistance, but also to extend its use cycle.
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:How to reduce porosity of high alumina brick
In order to reduce the porosity of high alumina brick, the corresponding measures should be taken from the selection of raw materials, batching, mixing, molding and firing.
Q:What are the materials for refractory materials? What are their names?
Classification of chemical components of refractory materialsAccording to the chemical characteristics of refractory raw materials can be divided into acidic refractory materials, such as silica, zircon etc.; neutral refractory raw material, such as corundum, bauxite, mullite (acidic) (acidic), Ge (alkaline) iron and graphite; alkaline refractory materials, such as magnesite, dolomite, magnesium sand calcium sand.
Q:What is the structure of magnesium aluminate spinel?
Mg Al spinel is a six square dense stack of equiaxed crystals
Q:Wave tile and throwing glaze, tile which good?
Vitreous tile is all ceramic tile, the material is hard, strong wear resistance, smooth finish is very good, in general, looks very bright. Microcrystalline brick, corundum brick Market said, they really mean bohuazhuan. Because of its low water absorption and high strength and hardness, glazed tile has been widely used. Many hotels, shopping malls and office space are widely used glass tile.
Q:What are the types of magnesia chrome bricks for industrial use?
It is possible to judge by the concrete kiln. The magnesium chrome bricks produced by real gold company are very good. Our factory purchased them the year before last, and their technicians were very professional, and gave us very good suggestions.
Q:What is the maximum temperature range of high temperature resistant insulation materials?
Materials defined as physical and chemical properties that allow them to be used in a high temperature environment are called refractory materials. Refractory materials are widely used in metallurgy, chemical, petroleum, machinery manufacturing, silicate, power and other industrial fields, the largest amount of metallurgical industry, accounting for 50% ~ 60% of the total output.
Q:Zirconium corundum 25 content or 40 content, how to distinguish in appearance?
Fused zirconia corundum brick is also called AZS AZS English is abbreviated to AZS, is based on three chemical composition of Al2O3 - Zr02 - Sio2 phase diagram of three component system, according to the content of the order, Al2O3 A, Zr02 Z, Sio2 S, national standards for the use of this abbreviation, such as No. 33 cast brick, abbreviated as AZS, 33#, No. 36 fused zirconium corundum brick, abbreviated as AZS, 36#, No. 41 fused zirconium corundum brick, abbreviated as AZS - 41#.

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