High Refractoriness Magnesia Refractory Bricks For Blast Furnaces Hot Air Furnaces
Magnesia refractory bricks for blast furnaces and hot-air furnaces
Product Description
Our company's magnesium-chromium series products are currently widely used in refining furnaces such as RH, AOD, and VOD in steel plants. This series of products has the advantages of high refractoriness, good corrosion resistance, strong thermal shock stability, and good high temperature volume stability. It can adapt to the different smelting conditions of various customers in the steel industry. Provide strong guarantee for customers to manufacture all kinds of high-grade and special steel grades.
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Brand of name
Index |
X-H21 |
X-H22 |
X-H23 |
X-H24 |
X-H26 |
X-H27 |
X-H231 |
X-HSPCD |
X-A13 |
| Al2O3 % | ≧75 | ≧80 | ≧65 | ≧65 | ≧60 | ≧50 | ≧65 | ≧50 | |
| Fe2O3 % | ≦1.00 | ≦1.00 | ≦1.00 | ≦1.00 | ≦1.00 | ≦1.00 | ≦1.00 | ≦2.00 | |
| Apparent porosity % | ≦20 | ≦21 | ≦19 | ≦23 | ≦23 | ≦23 | ≦20 | ≦24 | |
| Bulk density g/cm3 | ≧2.60 | ≧2.70 | ≧2.45 | ≧2.40 | ≧2.30 | ≧2.20 | ≧2.1 | ≧2.1 | ≦0.8 |
| Cold crushing strength Mpa | ≧55 | ≧45 | ≧55 | ≧45 | ≧40 | ≧40 | ≧60 | ≧35 | ≧1 |
| Refractoriness ℃ | ≧1850 | ≧1850 | ≧1850 | ≧1820 | ≧1790 | ≧1770 | ≧1790 | ||
| Reheat liner change (3h) % |
1550℃ ±0.2 |
1550℃ ±0.2 |
1450℃ ±0.2 |
1400℃ ±0.2 |
1300℃ ±0.2 |
1270℃ ±0.2 |
1450℃ ±0.2 |
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| Creep 0.2 Mpa (50h) % |
(1550℃) ≦0.8 |
(1550℃) ≦0.8 |
(1450℃) ≦1.0 |
(1400℃) ≦0.8 |
(1300℃) ≦0.8 |
(1270℃) ≦0.8 |
(1450℃) ≦0.7 |
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Thermal shock Resistances Times |
(1100℃) ≦30 |
(1200℃) ≦10 |
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| Reheat liner change 2h % |
(1300℃) ≦0.8 |
(1500℃) ≦0.5 |
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| Thermal linear expansion % |
(1300℃) ≦0.4 |
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| Thermal conductivity w/n ℃ |
(350℃) ≦0.27 |
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| Bending strength Mpa | ≧10 |
Application of Magnesia Chrome Bricks
1. Furnaces of metallurgy industry, heat treatment furnace
2. Furnaces of chemical industry and construction industry.
3. Furnace of incineration of garbage, CFB (circulating fluidized bed)
Standard sizing: 230 x 114 x 65 mm others up to the client
Project case
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