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 refractory brick for lime kiln is definitely a major overhaul, and the replacement of the valve and sporadic items can only be regarded as routine maintenance.
Q:How to count the number of loading refractory bricks?
Use one meter by one meter wooden raft-towing: use one meter raft-towing to count: Known your brick is T-3 standard bricks, each four layers lies down 15 and sidewards is 4 =64; according to 3.4kg, 47 clay bricks can hold 10 to 12 layers. According to the upper limit, each raft-towing can hold 2.3 tons
Q:What is the advantage for ceramic fiber material compared with refractory brick?
Heat capacity; excellent thermal shock resistance, good chemical stability, bearing sudden cooling and heating, without oven heating and cooling ,high speed, energy saving, is 1/8 of refractory brick, construction is simple. ceramic fiber materials and refractory brick belong to refractory insulation materials; low thermal conductivity: Low bulk density, ceramic fiber material is a new type of lightweight thermal insulation material, is one of the 10 points of lightweight refractory brick,
Q:Do cement kiln refractory bricks have quality guarantee period? can them still be used for a long time's pile?
They of course can be used. The plant will produce some bricks for standby application in advance, so they put for a period of time is completely no problem
Q:What is the use of refractory bricks
Silica brick, common brick, special type brick. For example, fireclay bricks, high alumina brick, fused brick (fused cast brick), unfired brick, refractory materials at high temperature and can withstand a variety of physical and chemical changes and mechanical action with certain shape and size. According to the preparation process, the method can be divided into burnt brick. Can be used as construction furnaces and various thermal equipment of high temperature building materials and construction materials; according to the shape and size, it can be divided into standard bricks, refractory heat insulating bricks, magnesia brick etc.
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:Refractory brick, high alumina brick, magnesia chrome brick, magnesia brick, clay brick, which type of brick has the highest refractory temperature?
It depends. if high alumina brick is used in kiln, its temperature is above 1700 degree, clay brick is between 1500 degree to 1750 degree, magnesia bricks and magnesia-chrome bricks are about 1500 degree to 1650 degree.
Q:is it correct that the higher the refractoriness is, the better refractory bricks are?
Does not necessarily, it has a great relationship with the compression and bending and corrosion resistance.
Q:Can refractory bricks be used when it cracks for 1cm
3, If the crack is caused by burning or drying, then it can't be used. While if the carck is caused by refractory brick molding, it still can be used. 4, the crack is caused by refractory bricks raw materials.
Q:What kind of refractory brick is suitable for 1400 degrees shuttle kiln?
Corundum mullite

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