LMM TOTAI offer a complete product and service portfolio for all steelmaking processes.
From basic and non-basic bricks and mixes, slide gate plates, isostatic products and prefab components to special machinery, mechanisms and repair systems.
Refractory castable for Cover of tundish
Refractory castable for Cover of tundish
Use
Bland
The cover of tundish：
high alumina castable
LY-CFC-16T
LY-CFC-18T
The
castable for the lining :
high
alumina castable
LY-CFC-TD-80
Bricks for slag dam :
magnesia bricks
LY-TBX-SY-1
high alumina bricks
LY-TBX-A2
Coating materials :
magnesia coat
LY-TD-C-M7
Block for impact zone：
Al2O3-SiC-C block
LY-LD-AGX-T2
Nozzle for casting：
zirconia nozzle
LY-YZN
Well block：
high alumina block
LY-SK35
Ramming materials：
SiO2-Al2O3-SiC ramming materials
LY-R-AMC
Repairing materials by trowelling：
high alumina castable
LY-C-170M
Patching materials :
high alumina
LY-P-AP60
LY-P-AP80
Select product: high alumina castable
Select modle: LY-CFC-16T/LT-CFC-18T
Comparing Characteristics
| Characteristics | 『LY-CFC-16T』 | 『LY-CFC-18T』 |
| ・No large shrinkage and expansion ・No bias of expansion and shrinkage in heating and cooling. | Reduce gap of expansion and shrinkage in repeated heating by using chamotte and high alumina aggregates. | Reduce tendency of shrinkage in repeated heating by adding expansible raw material to high alumina aggregates. |
| ・No corrosion under used temperature ・Few formation of low melting point material | Low cement castable contained over 50 ％ alumina. Superior heat resistance. | Low cement castable contained over 80％ alumina. Greater heat resistance than LY-CFC-16T. |
| ・No peeling during operation. | Prevent peeling by adding heat resistance stainless fiber. | Prevent peeling by adding heat resistance stainless fiber. |
| ・Cost ・Quantity reguired | ・Cheaper than 18T. ・Quantity required is few, and unit price is cheap. | ・More expensive than 16T. ・Much quality required |
Evaluation of CFC-16T and CFC-18T
『CFC-16T』
- Tundish cover material for general purpose
- For customers required volume stability
- Basic material to develop new material in order to fulfill customer’s multi needs.
『CFC-18T』
- Recommended in usage condition required more heat resistance than 16T.
- For customers required high corrosion resistane and high heat resistance
Technical Data
| Brand | LY-CFC-16T | LY-CFC-18T | |
| Maximum Service Temperature(℃) | 1600 | 1800 | |
| Chemical Composition(%) | Al2O3 | 56 | 82 |
| SiO2 | 39 | 14 | |
| SiC | 3 | ||
| Maximum grain (mm) | 8 | 8 | |
| Cold Crushing Strength(MPa) | 110℃×24h | 50 | 40 |
| 1500℃×3h | 85 | 78 | |
| Linear Change(%) | 110℃×24h | -0.1 | -0.1 |
| 1500℃×3h | 0.9 | 0.1 | |
| Water Required (%) | 7.0～9.0 | 6.0～8.0 | |
| Quantity Required(kg/m3） | 2400 | 2800 | |
| Feature | ・General purpose ・Used at blast furnace and electric arc furnace | ・High heat resistance ・Used for electric arc furnace | |