It takes high purity caustic calcined dolomite and high purity caustic calcined magnesia as main raw material , adding adequate amount sintered agent, fine ground, balling under high pressure , burned in high temperature rotary kiln, then crushing, screening, proportion, mixing. it is characterized by high dense , high strength, high corrosion resistance, high thermal resistance, and volume stability, is widely used for the bottom of ultra-high-power, high-power, normal-power EAF and DC EAF and ferroalloy furnace.
Index |
Brand |
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TLD-8A |
TLD-8B |
TLD-12A |
TLD-12B |
TLD-26A |
TLD-26B |
TYB-27 |
|
MgO% |
84 |
7-9 |
5-6 |
1.2 |
0.55 |
3.25 |
0-30 |
CaO% |
80 |
9-11 |
5-6 |
1.2 |
0.55 |
3.25 |
0-30 |
Fe2O3% |
70 |
17-19 |
4.5-5.5 |
1.2 |
0.55 |
3.25 |
0-30 |
Al2O3(%) |
66 |
25-28 |
4.5-5.5 |
1.2 |
0.55 |
3.25 |
0-30 |
SiO2(%) |
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Size(mm) |
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Strength after calcining at the following temperatures(Mpa) |
|||||||
1300℃×3h |
>10 |
>10 |
>10 |
>10 |
>10 |
>10 |
>10 |
1600℃×3h |
>30 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
Comprehensive characteristics |
ceramic |
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Strength after calcining at the following temperatures(%) |
|||||||
1300℃×3h |
<0.5 |
<0.5 |
<0.5 |
<0.5 |
<0.5 |
<0.5 |
<0.6 |
1600℃×3h |
<2.0 |
<2.0 |
<2.0 |
<2.0 |
<2.0 |
<2.0 |
<2.0 |
Temperature limit(℃) |
1800 |
1750 |
1800 |
1750 |
1800 |
1750 |
1750 |