Phosphate refractory mud
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Refractory mud
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Details Introduction
Phosphate refractory mud is mainly used in conjunction with phosphate-bonded refractory bricks, such as high-alumina bricks, low-creep high-alumina bricks, and bricks for blast furnaces and hot blast stoves when constructing kiln linings.
Characteristics of phosphate refractory mud:
Phosphate refractory mud has various characteristics. It has a fast bonding time and high bonding strength, allowing for quick and effective adhesion of refractory materials. Its high-temperature performance is stable, maintaining good performance even in high-temperature environments, with low shrinkage and complete integrity, making it less prone to cracks and damage. Additionally, it is easy to use; at the construction site, a certain proportion of diluted phosphate can be added without the need for confinement, and it can be directly mixed for use.
| Indicators |
|
Ordinary high-alumina refractory mud |
Phosphate-bonded corundum refractory mud |
Phosphate-bonded high-alumina refractory mud |
||||
|
|
|
LN-50 |
LN-60 |
LN-70 |
LN-70P |
GN-70P |
GN-80P |
GN-90P |
| (Al₂O₃)/%, > |
50 |
60 |
70 |
70 |
70 |
80 |
90 |
|
| Refractoriness/℃, > |
1760 |
1780 |
1780 |
1780 |
1780 |
1780 |
1800 |
|
| Room temperature flexural bonding strength/MPa, > |
110 CX24 h |
1.0 |
1.0 |
1.0 |
2.0 |
2.0 |
2.0 |
2.0 |
| 1400 C X3 h |
4.0 |
4.0 |
4.0 |
6.0 |
- |
- |
- |
|
| 1500 C X 3 h |
- |
6.0 |
6.0 |
6.0 |
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| 0.2MPa load softening temperature T 2.0/℃, > |
- |
1400 |
1550 |
1600 |
1650 |
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| Heating permanent linear change/% |
1400 C X3 h |
-5~+1 |
- |
|||||
| 1500 C X3 h |
- |
-5~+1 |
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| Bonding time/s |
|
60~180 |
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| Particle size/% |
<1.0 mm |
100 |
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| >0.5 mm |
<2 |
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| <0.074 mm |
>50 |
>40 |
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Key words:
Phosphate refractory mud
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