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LMM YOTAI PRODUCT
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The MgO-C bricks which used in EAF has a good performance in 75 furnaces, we are so satificated with the using performance of the bricks from LMM YOTAI
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We improved the bricks formula and specification accoridng to our experience, the final using performance doubled compared with their previous specification.
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In the ladle we have been using high alumina bricks with a performance of 50 heats. After the improved design of LMM YOTAI engineers, we use magnesia carbon bricks instead of high alumina bricks, and the performance reaches 60 furnaces and is still running.
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- 86-411 84174804
- lmm@magnesiacarbonbricklmm.com
- Ganjingzi District, Dalian 116000, China
High alumina castable for Tundish
Brand: LMM YOTAI
Warranty: 1 year
Sample: Sample testing is available
Certification: ISO9001/ISO14001
Payment method: TT/LC
Shipping method: sea/land/air
Specifications: Customized products according to customer drawings
| Use | Bland | |||
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The cover of tundish： | high alumina castable | LY-CFC-16T |
| LY-CFC-18T | ||||
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The castable for the lining : | high alumina castable | LY-CFC-TD-80 | |
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Bricks for slag dam : | magnesia bricks | LY-TBX-SY-1 | |
| high alumina bricks | LY-TBX-A2 | |||
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Coating materials : | magnesia coat | LY-TD-C-M7 | |
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Block for impact zone： | Al2O3-SiC-C block | LY-LD-AGX-T2 | |
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Nozzle for casting： | zirconia nozzle | LY-YZN | |
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Well block： | high alumina block | LY-SK35 | |
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Ramming materials： | SiO2-Al2O3-SiC ramming materials | LY-R-AMC | |
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Repairing materials by trowelling： | high alumina castable | LY-C-170M | |
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Patching materials : | high alumina | LY-P-AP60 | |
| LY-P-AP80 |
The used position: for the lining
Select modle: LY-CFC-TD-80
| Brand | LY-CFC-TD-80 | LY-CFC-TD-65 | LY-CFC-TD-60 | ||
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Chemical composition(%) | Al2O3 | 80 | 65 | 60 |
| SiO2 | 16 | 31 | 36 | ||
| Maximum grain(mm) | 8 | 8 | 8 | ||
| Cold crushing strength(MPa) | 110℃×24h | 40 | 50 | 55 | |
| 1000℃×3h | 70 | 90 | 100 | ||
| 1500℃×3h | 95 | 90 | 100 | ||
| Linear change (%) | 1500℃×3h | -0.1 | -0.1 | -0.1 | |
| 1500℃×3h | 0.3 | 0.7 | 0.8 | ||
| Thermal linear expansion(%) at 1000℃ | 0.6 | 0.5 | 0.5 | ||
| Mixing water(%) | 5.0-6.0 | 6.5-7.5 | 6.0-7.0 | ||
| Quantity required (kg/m2) | 2,850 | 2,500 | 2,400 | ||
The used position: for the cover
Select modle: LY-CFC-16T/LY-CFC-18T
Comparing Characteristics of LY-CFC-16T and LY-CFC-18T
| 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 LY-CFC-16T and LY-CFC-18T
『LY-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 | |
- Repairing materials by trowelling
Select modle: LY-C170M - Patching materials
Select modle: LY-P-AP60/LT-P-AP80
Brand LY-P-AP60 LY-P-AP80 LY-C-170M 
Chemical composition(%) Al2O3 60 60 60 SiO2 34 60 60 Cold crushing strength(MPa) 110℃×24h 5 60 60 1000℃×3h 10 60 60 1500℃×3h 25 60 60 Linear change (%) 1000℃×3h – 60 60 1500℃×3h -1.5 60 60