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Castable and Pre-formed Shape for BF Trough this product line adopt corundum,silicon carbide,graphite,and with new type non-oxide material added,and are developed on the base of atro-low cement castable technoledge.These products are characteristic of high strength,erosion and crosion resistance to hot iron,without stained with iron slag,long sercielife,non-cracking while fast baking.They are mainly used in the casting and repairing of main trough,branch trough,slag trough and slag skimmer of BF trough over 1000m3,and the amoundt of flowing iron can reach more than 300 thousands MT.



ASC3 ASC4 ASC5
AL2O3% ≥72 ≥65 ≥60
SiC% ≥10 ≥10 ≥25
MPa
cold pressive strength 110℃×24h ≥25 ≥25 ≥20
1450℃×2h ≥40 ≥40 ≥30
MPa
Modulus of
Reputure 110℃×24h ≥5 ≥5 ≥4
1450℃×2h ≥7 ≥7 ≥6
Bulk density
g/cm3 110℃×24h 2.85 ≥2.7 ≥2.7
1450℃×2h 2.8 ≥2.65 ≥2.65
Use part Main channel Branch tapping channel Slag trough

Precast products and skimmer ramming material for blast furnace tapping channel
Preproduced and skimmer ramming material for blast furnace tapping channel
Produced skimmer ramming material by this company is new product exploited of based on carbon ramming material matching with original blast furnace.Skimmer with last carbon ramming material is lack of ability of unti-washing and ment more or less three times as per month and replaced as monthly.There is greater labor intensity in the side of worker.New AL2O3-SiC-C quality skimmer ramming material or whole skimmer preproduced has characteristics of construct convenient,resistance to washing and erosion,abrasion resistance.So these the greatest reduce labour intensity with constructing and labor intensity with mending.It can process about one year under normal condition.During thus we supply perfect service after selling.













SLB-1 SLB-2 remarks
Skimmer ramming material AL2O3-SiC-C
AL2O3% ≥65 ≥72 This index applies to skimmer ramming material and whole skimmer preproduced
SiC+C% ≥12 ≥15
Bulk density g/cm3 ≥2.75 ≥2.85
MPa
cold compressive strength 110℃×24h ≥30 ≥33
1500℃×3h ≥50 ≥55
MPa
Modulus of rupture under normal temperature 110℃×24h ≥10 ≥12
1500℃×3h ≥15 ≥18
Change of curve 1100℃×3h ≤-0.15 ≤-0.1
refractoriness >1790 >1790

Refractory slurry for blast furnace and hot blast stove

High alumina slurry Fireclay slurry Corundum slurry Alumina carbon slurry Press-in slurry without watter
LN-65 LN-75 NN-42 NN-45 GN-85
AL2O3% ≥65 ≥75 ≥42 ≥45 ≥85 ≥60 ≥65
refractoriness ≥1790 ≥1790 ≥1710 ≥1730 ≥1790 SiC+C≥17 ≥1790
MPa modulus of
Rupture 110℃×24h ≥1 ≥2 ≥1 ≥2 ≥2 ≥5 ≥4
1400℃×3h ≥4 ≥6 ≥3 ≥6 ≥3
1500℃×3h ≥8
0.2MPa T2.0 ℃
Initial softening point under load ≥1400 ≥1400 ≥1200 ≥1650
Grain size
mm -1.0 100 100 100 100 100 100 100
+0.5 ≤2 ≤2 ≤2 ≤2 ≤2 ≤2 ≤2
-0.074 ≥50 ≥50 ≥50 ≥50 ≥50 ≥50 ≥50



Castable material for blast furnace and hot blast stove

High-alumina qulity castable material Corundum quality pouring material Corundum quality gravity castable material High alumina quality gravitypouring material Carborundum quality pouring material High alumina carborundum quality pouring material
LJ-1 LJ-2 GJ-1 GJ-2 ZGJ ZLJ-2 TJ GTJ
AL2O3% ≥60 ≥70 ≥80 ≥85 ≥85 ≥65 ≥45
SiC% ≥75 ≥10
Bulk density g/cm3 ≥2.45 ≥2.55 ≥2.75 ≥2.8 ≥2.85 ≥2.45 ≥2.45 ≥2.4
Cold compressive strength 110℃×24h ≥20 ≥25 ≥30 ≥35 ≥40 ≥20 ≥8 ≥8
℃×3h 1400
≥40 1400
≥40 1500
≥60 1500
≥75 1500
≥75 1400
≥40 1450
≥45 1450
≥45
Modulus of rupture 110℃×24h ≥6 ≥8 ≥9 ≥40 ≥10 ≥7 ≥3 ≥3
℃×3h 1400
≥8 1400
≥10 1500
≥11 1500
≥12 1500
≥12 1400
≥9 1450
≥5 1450
≥5
Change of curve 1100℃×3h -0.1 -0.1 -0.1 -0.1 -0.1 -0.1 -0.1 -0.1
1400℃×3h ±0.3 ±0.5 ±0.3 ±0.3 ±0.3 ±0.5 ±0.2 ±0.3