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  冶金行业电炉、各种高炉用炉顶砖(拱脚砖)

 

高铝砖
High alumina bricks
                                                                 【GB2988-87】

高铝砖.jpg
性能 properties
牌号 Brands
一级高铝
二级高铝
三级高铝
LZ-75
LZ-65
LZ-55
LZ-48

Al2O3,≥ %

75
65
55
48

耐火度 Refractoriness,≥,℃

1790
1770
1750

0.2Mpa 荷重软化开始温度 RUL, T0.6,℃≥,℃

1520
1500
1470
1420

重烧线变化
Linear change on reheating,%

1500℃×2h
+0.1
-0.4
-0.4
1450℃×2h

+0.1
-0.4

显气孔率 Apparent porosity,≤ %
23
22
常温耐压强度 CCS,≥Mpa
≥53.9
≥49.0
≥44
≥40

冶金行业电炉、各种高炉用炉顶砖(拱脚砖)
Roof&skew bricks used in metallurgical industry, electric furnace and blast furnace
 【YB/T5107-93】


性能 properties
牌号 Brands

DL-80

DL-75

DL-65

Al2O3,%

≥80

≥75

≥65

耐火度 Refractorinese ,℃

≥1790

荷重软化温度 RUL,T0.6,℃

≥1550

≥1530

≥1520

重烧线变化 Linear change on reheating(1500℃×2h),%

-0.3 ~ 0

-0.4 ~ 0

-

显气孔率
Apparent porosity,%

炉顶砖 roofbrick

≤19

≤22

拱脚砖 skew brick

≤21

≤23

耐压强度 CCS,Mpa

≥78.5

≥68.6

≥58.8

高铝不烧电炉顶砖
Pressurwe at normal temperature

高铝不烧电炉顶砖.jpg

理化性能 Physical & chemical properties

高铝不烧电炉顶砖
Pressure at normal temperature

化学成份 %
Chemiacl composition

Al2O3

≥80

Fe2O3

≤1.7

显气孔率 % Apparent porsity,%

≤15

体积密度 BD,g/cm3

≥3.0

常温耐压强度, CCS Mpa

一般电炉顶砖
For general electric furnace

≥80

超高功率电炉顶砖
For super power electric furnace

≥100

耐火度 Fire-resistance, ℃

≥1790

0.2Mpa 荷重软化开始温度RUL,℃

≥1600

重烧线变化 % Linear change on reheating(1550 ℃×3h)

-0.4

热震稳定性次数(1100℃水冷),次
Thermal shock resistance (1100℃ water quench),cycles

≥15

钢包工作层用浇注料
The castables of the ladle working lining

  刚玉尖晶石整体浇注料是以刚玉为主要原料,添加部份尖晶石或镁砂原料,以水泥或微粉为结合剂的不定型产品,使用中具有良好的整体性、抗侵蚀性及热震稳定性优的特点。
  The corundum-spinel based castables is one integral casting refractory material of the ladle, using corundum as main material and incorporating certain spinel or magnesia materials, bound by the cement or micro-powder. This unshaped refractory has good integrity,excellent corrosion resistance and thermal shock stability.

项目Item 刚玉尖晶石浇注料
Corundum-
Spinel Castables
铝镁浇注料
Al2O3-MgO
Castables
刚玉自流料
Corundum-Spinel
Castables
高铝浇注料
High Alumina
Castables
体积密度Bulk
Density(g/cm3)
110℃×24h 3.15 3.10 3.00 3.10 2.80 2.60
耐压强度
Cold Crushing
Strength(MPa)
110℃×24h ≥55 ≥55 ≥75 ≥38 ≥45 ≥38
1550℃×3h 165 177 110 120 102 80.3
抗折强度
Modulus of
Rupture(MPa)
110℃×24h 9.5 9.0 7.0 7.5 6.6 -
1550℃×3h 19.4 21.0 7.5 12.5 8.5 -
残余线膨胀Residual
Linear Change(%)
1550℃×3h +0.12 +0.30

+0.50

+0.20

+0.10

+0.35
化学成份
Chemical
Composition(%)
Al2O3 93.30 92.70 75.00 88.50 17.50 66.50
MgO 3.20 3.50 10.00 - - -
使用部位 Application 包壁
Lip of
the wall
包底
Bottom
包底
Bottom
包底与包壁的缝隙
Between of ladle
bottom and the wall
包嘴
Lip of the ladle

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