alumina-silica castable mixes with different additives
|
Name of indexes |
Kind of mix |
||||||
| Rocast 85S | Rocast 90S | Rocast 90ST1 | Rocast 90ST2 | Rocast 60SiC | Rocast 75SiC |
Rocast 80SiC |
|
| 1. Application limit temperature, oC |
1750 |
1800 | 1800 | 1800 | 1600 | 1650 |
1700 |
| 2. Content, % | |||||||
| Al2O3, not less |
87 |
90 | 91 | 90 | 60 | 75 |
80 |
| MgO, within limits |
6,0-7,5 |
6,0-7,5 | 6,0-7,5 | 6,0-7,5 | - | - |
- |
| SiC, not less |
- |
- | - | - | 15 | 15 |
15 |
| СаO, within limits |
1,6-1,8 |
1,6-1,8 | 2,0-2,2 | 1,6-1,8 | 4,0-5,0 | 1,8-2,3 |
1,8-2,3 |
| Fe2O3, not more |
- |
- | - | - | 2,5 | 0,6 |
0,2 |
| 3. CCS after 3 days hardening and aftertreatment, n/mm2 | |||||||
| at t= 100 oC |
40 |
40 | 50 | 50 | 30 | 45 |
45 |
| at t= 1000 oC |
45 |
45 | 40 | 50 | 20 | 65 |
45 |
| at t= 1500 oC |
60 |
70 | 100 | 120 | - | - |
- |
| 4. Thermal shock resistance by method 1300 oC – water , cycles, not less |
22 |
22 | 22 | 22 | 10 | 18 |
18 |
| 5. Moistening water, %, within limits |
4,5-5,0 |
4,5-5,0 | 5,0-5,5 | 4,5-5,0 | 7,0-8,0 | 4,5-5,0 |
4,5-5,0 |
| Mixes may be produced with additives(organic or metal fibre) according to consumer’s demand.. | |||||||
Application:
Corundum-spinel (Rocast 85S, Rocast 90S, Rocast 90ST1, Rocast 90SТ2) – steel ladles lining, nozzle pocket blocks (argon and slide gate), upper blast tuyere, steel pouring nozzles, multiusing nozzle-collectors, fighting plate, outer lining of vacuum unit manifold.
Corundum-silicon-carbide (Rocast 60SiC, Rocast 75SiC, Rocast 80SiC) – monolitic lining of blast furnace spouts, multiusing nozzles-collectors, outer lining of vacuum unit manifolds, upper blast tuyeres for iron desulfurization.