Refractory
High heat resistance, simple handling qualities, and extended workability make mortars and concretes based on CA cements extremely durable refractory products.
CAC for Refractory Applications
Resistance to high temperatures is the main reason for using Calcium Aluminate Cements in refractory products.
What you will find in the downloadable document
Properties of ISTRA CAC for the refractory industry
Properties of ISTRA CAC with different aggregates
Properties of ISTRA CAC in refractory applications
Benefits
Lumnite® for refractory concrete mixes
LUMNITE cement is often used with lightweight aggregates—expanded shale, clay, or slate (ESCS)—to produce refractory concretes or mortars that are highly strong, resistant to abrasion and corrosion, and insulating.
What you will find in the downloadable document
Production
Properties – ESCS mixes
Properties – ESCS and vermiculite
Benefits
Lumnite® for refractory-concrete based on Diabase Traprock
Suited for industrial floors in the iron and steel industry and in food, chemical, and petrochemical facilities. Also suitable for rapid repairs where compressive strengths greater than 3000 psi are needed within six hours.
What you will find in the downloadable document
Properties
Benefits
Refractory
Typical Service Temperatures
| ELECTROLAND | ALUMINITE | ISTRA 40 LUMNITE MG |
ISTRA 45 LUMNITE |
ISTRA 50 REFCON MG |
ISTRA 50 5.0 | REFCON | |
|---|---|---|---|---|---|---|---|
| INSULATING CONCRETES | |||||||
| Hollow spherical corundum | - | - | - | - | - | - | - |
| Broken insulating brick | 1200 | 1200 | 1200 | 1250 | 1300 | 1300 | 1350 |
| Expanded clay | 1200 | 1200 | 1200 | 1250 | 1300 | 1300 | - |
| Perlite | 1000 | 1200 | 1000 | 1020 | 1050 | 1050 | 1100 |
| Vermiculite | 1000 | 1200 | 1000 | 1020 | 1050 | 1050 | 1102 |
| DENSE REFRACTORY CONCRETES | |||||||
| Tabular alumnia | - | - | - | - | - | - | - |
| Fused corundum (white) | - | - | - | - | - | - | - |
| Fused corundum (brown) | 1400 | 1400 | 1400 | 1450 | 1520 | 1520 | 1580 |
| Beauxite | 1400 | 1400 | 1400 | 1450 | 1500 | 1500 | 1550 |
| Sillimanite, andalusite | 1320 | 1320 | 1320 | 1400 | 1450 | 1450 | 1499 |
| Chamotte | 1300 | 1300 | 1300 | 1340 | 1389 | 1390 | 1450 |
| CALUROC | 1150 | 1150 | 1150 | 1200 | 1250 | 1250 | - |
| Besalt | 800 | 800 | 800 | - | - | - | - |
| Quartz | 500 | 500 | 500 | - | - | - | - |
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