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Refractories Castables For Metallurgical Industry-The Monolithic Refractory For Blast Furnace
The Monolithic Refractory For Blast Furnace

Technical Data

1.the phosphate mortar for clay brick and high alumina brick

Item unit index
NP-45 the phosphate mortar for clay LP-70 the phosphate mortar for high alumina
Refractoriness ≥ ℃ 1750 1790
0.2Mpa refractoriness under load ≥ ℃ 1200 1320
particle size >0.5 mm ≤ 1% ≤ 1%
<0.076 mm ≥ 50% ≥ 50%
Modulus of rupture Mpa 110℃ dry Mpa ≥ 2 ≥ 2
permanent linear change % Mpa 1200℃×3h ≥ 5.9 1400℃×3h ≥ 5.9
Al2O3 % ≥ 45 70
adhesive time min 1-2 1-2
water required % 25-30 25-30

2.the high-strength clay castable WNJ-2(for thebottom of blast furnace)

Item Refractoriness permanent linear change Bulk density 0.2Mpa refractoriness under load Cold crush strength Al2O3
Unit ℃ % g/cm3 ℃ Mpa %
Index ≥1600 ±1 ≥2.1 ≥1350 ≥40 ≥42

3.the gunning max CMG-BF(for the roof,ascending channel,gravity dust separator of BF)

Item Bulk density Max service tem. Modulus of rupture Al2O3 SiO2 permanent linear change % W/m.k
Unit g/cm3 ℃ Mpa Mpa Mpa % % 110℃ 1000℃ 1000℃
Index ≥1.9 1300 ≥4 ≥2.5 ≥4 ≥35 <50 -0.2~0 -1~0 <0.9

4.the fibrecastable(the lining of air-intake pipe)

Item Bulk density Max service tem. Cold crush strength Solidification time Al2O3 Fe2O3 W/m.k
Unit g/cm3 ℃ Mpa h % % 1000℃ 1200℃
Index 0.65-1.3 1280 0.7-3.0 3-8 50-55 <1 0.22 0.29

5.the corundum castable(the lining of air-intake pipe)

Item permanent linear change % Bulk density Modulus of rupture Al2O3
Unit 1400℃ g/cm3 (110℃×24h)Mpa %
Index ±0.5 ≥3 ≥25 ≥90

 

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