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vproduced by superfine alumina bauxite and special additive.
vit has high bulk density, low porosity and low creep under load at high temperature.
v-application: it can be used for the lining of bake oven, used as flue wall bricks.
|
item |
unit |
cm-al-1 |
test method |
|
ai2o3 |
% |
≥58 |
gb 6900 |
|
fe2o3 |
% |
≤1.6 |
gb 6900 |
|
k2o na2o |
% |
≤0.8 |
gb 6900 |
|
cao mgo |
% |
≤0.7 |
gb 6900 |
|
apparent porosity |
% |
≤19 |
gb/t2997-2000 (iso5017-1988) |
|
bulk density |
g/cm3 |
≥2.45 |
gb/t2997-2000 (iso5017-1988) |
|
cold crushing strength |
mpa |
≥50 |
gb/t5072-2008 (iso10059-1-1992) |
|
folding strength at 13500c*0.5hours |
mpa |
≥6 |
gb/t3002-2004 (iso5013-1985) |
|
refractoriness under load 2kg5/cm3 |
0c |
≥1550 |
gb/t5989-1998 (iso1893-2005) |