High Alumina for Blast Furnaces

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项目
Item

GL-65  

GL-55

GL-48

Al2O3,%              不小于min

65

55

48

Fe2O3,%              不大于max

2.0

2.0

2.0

耐火度,℃            不低于
Refractoriness        min

1800

1780

1760

荷重软化开始温度,℃  不低于min

1500

1480

1450

重烧线变化,%         1500℃x2h
P.L.C                 1450℃x2h

0— -0.2

0— -0.2

0— -0.2

显气孔率,%           不大于
A.P                   max

19

19

18

常温耐压强度,        MPa不小于
CCS                   min  

58.8

49.0

49.0


Properties of products:High alumina bricks for furnaces were mainly made Yangquan Bauxite,being high pressure pressed and sintered in high temperature.Main minerals compositions are mullite and corundum phases.These products were widely used in all parts of furnace lining of their excellent physical/chemical properties in high temperature.



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Q:What materials make of clay insulating fireclay brick?
The aluminium silicate refractories whose aluminium oxide content is 30% ~ 46% is called clay-based refractories. Clay products mainly consist of mullite, glass phase, cristobalite and quartz.
Q:What should be paid attention when the refractory brick kiln furnace reaches a certain service life and will be removed?
Q:What refractory materials are adopted in each part of the blast furnace?
The blast furnace throat from top to bottom, stack, belly and Bosh, hearth and bottom etc.
Q:What kind of refractory brick is suitable for 1400 degrees shuttle kiln?
Corundum mullite is also the principle about.2 can be. use high aluminum brick, which heat storage capacity is big, but the price is more expensive, and the chilling and heating performance is not good, the .
Q:The high thermal conductivity of silica brick and traditional brick what is the difference?
The scale quartz is a spear shaped double crystal structure, very compact and favorable to the increase of thermal conductivity. The high thermal conductivity of silica brick in improving thermal conductivity and other performance indicators and traditional coke silicabrick agreement.That is to say, the high thermal conductivity of silica brick all inherited the traditional advantages of coke oven silica brick, on the basis of further highlight the characteristics of high thermal conductivity
Q:Is there a big difference between two high alumina brick and one high alumina brick?
According to my experience, two kinds of high alumina bricks from the index, there is a big difference between the content of AL2O3, a high aluminum brick in 75%, two grade high alumina bricks in 65%, so the content is not the same, also decided that the use of temperature difference, the difference is very big.
Q:National refractory materials company ranking
Zhejiang Sunon Refractories Co., Ltd. is a group member of the factory of industrial economy research China (country), building materials building materials industry center Changxin Branch Center of refractories. The main products are: wear-resistant refractory brick, aluminum silicate fiber board, ordinary magnesia, heavy casting materials, spalling brick kilns, special casting materials, high strength and abrasion resistant castable refractory castable, special pulverized coal burner, MF-170 coating (with fabric), clay brick, corundum wear-resistant plastic, calcium silicate board, lightweight castable and the direct combination of magnesia chrome brick, unburned magnesia chrome brick, anti flaking high alumina brick, mullite brick, antiskinning castable,
Q:several refractory brick of rotary kiln several is damaged, how many refractory bricks should be replaced?
The life of refractory bricks in rotary kiln is generally short.
Q:The formula in the refractory brick, and firing curve, who knows?
Add 1.8-2.2% of the total weight of the main raw material, and then add lime milk, rolling for 10-15 minutes, and finally add pulp, rolling for 10-15 minutes, out of the mill, forming billet.
Q:What are the main constituents of refractory brick?
Refractory brick composition is mainly composed of a variety of aggregate or aggregate and one or more kinds of sticky agent composed of mixed powder particles, when used, must be mixed with one or more liquids, mixing evenly, with strong liquidity. Different refractory bricks are different, such as silicon aluminum

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