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.
Factional refractory – typical eigenvalues of immersionport body
The company provides a wide range of products and services used in converter, EAF, Ladle, tundish and other kilns and furnaces. We also equipped with world advanced facilities such as Laeis automatic hydraulic press HPF2500, Eirich R19 mixer, Shimadzu made XRF-1800 sequential X-Ray fluores-cence spectrometer, by focusing on product research and development and quality control. Our products also supply to Asia , Europe, America and Africa and other countries and regions.
The main role of the functional parts is to guide and control the flow of steel water from thesteel package, the middle package into the mould, and protect the steel water in theprocess to avoid oxidation.
Main production processes
| Item | Submersed Nozzle | ||
| Body | |||
| Name | WSA40 | WRA53 | WRA54 |
| High erosion resistance | General | High thermal shock resistance | |
| Chemical Component(%) | |||
| F.C+ SiC | 23+1 | 29+7 | 28+1 |
| Al2O3 | 62 | 42 | 41 |
| SiO2 | 3 | 19 | 24 |
| ZrO2 | 4 | 2 | 3 |
| BD (g/cm3) | 2.65 | 2.24 | 2.24 |
| AP (%) | 12 | 17.5 | 17 |
| Bendnig Strength (MPa) | 11 | 8.8 | 7.6 |
| Item | Submersed Nozzle | ||
| Slag line | |||
| Name | WRZ20 | WRZ30 | WRZ40 |
| High erosion resistance | General | High thermal shock resistance | |
| Chemical Component(%) | |||
| F.C+ SiC | 13+0 | 20+0 | 23+0 |
| ZrO2 | 82 | 75 | 73 |
| BD (g/cm3) | 3.75 | 3.47 | 3.35 |
| AP (%) | 17.7 | 16.4 | 15.5 |
| Bendnig Strength (MPa) | 7 | 6.7 | 6.7 |
| Item | Tundish blowing argon on upper nozzle | |
| Anti-alumina blocking | ||
| Name | WRM30 | WSA40M |
| chimera | body | |
| Chemical Component(%) | ||
| F.C + SiC | 24 | 25 |
| Al2O3 | — | 66 |
| SiO2 | — | 3 |
| MgO | 73 | — |
| BD(g/cm3) | 2.55 | 2.64 |
| AP(%) | 13.9 | 11 |
| Bending Strength(MPa) | 8.5 | 11 |
