Refratechnik Asia - Refractory concretes
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09.02.2012 - 10:12 clock
In constant efforts to intensify customer services and improve products, Refratechnik has developed innovative refractory concrete grades.
These low cement castables (LCC) are state of the art products in refractory technology and meet all the demands of processing and application behaviour.
These low cement castables (LCC) are state of the art products in refractory technology and meet all the demands of processing and application behaviour.
In order to obtain a long service life, even under the harshest conditions, it is most essential that the refractory concretes be installed correctly. Our supervisors are on hand to provide technical assistance and supervision during installation.
The refractory concretes are produced in our plant in Gornal/Spain, and production is subject to the strict demands of DIN EN ISO 9001 and 14001.
Lining with refractory concretes and bricks
The refractory concretes are produced in our plant in Gornal/Spain, and production is subject to the strict demands of DIN EN ISO 9001 and 14001.
Lining with refractory concretes and bricks
The product range includes the following grades:
• regular cement castables (RCC)
• low cement castables (LCC)
Example installations
• regular cement castables (RCC)
• low cement castables (LCC)
Example installations
| Grade | Fields of application | Material properties | Processing technique |
| REFRACORUND 95 LCC | tip of burner pipe, bullnose, nose ring, elbows of planetary cooler, damper and damper casing, front zone of cooler benches, combustion chamber | very high abrasion resistance and high strengths, very high refractoriness, resistant to thermochemical attack | vibrating |
| REFRABAUXITE 85 LCC | impact zones, side benches and walls in cooler, kiln hood, bullnose, elbows in tertiary air duct and planetary cooler, damper and damper casing, nose ring, burner pipe | very high abrasion resistance and strengths, resistant to high temperatures, mixable with REFRA-SiC 50 AR to obtain AR-Mixcrete | vibrating |
| REFRABAUXITE 75 LCC | kiln hood, bullnose, cooler inlet throat, cooler benches, calciner | resistant to alkali attack, high abrasion resistance, high thermal shock resistance, mixable with REFRA-SiC 50 AR to obtain AR-Mixcrete | vibrating |
| REFRAMULLITE 60 LCC | kiln hood, burner pipe, tertiary air duct, bullnose, side walls in cooler, rear zone of cooler benches, kiln inlet cone, combustion chamber | high abrasion resistance and strength, good resistance to alkali attack | vibrating |
| REFRACLAY 40 LCC | calciner, cyclones, raw meal ducts, gas ducts, chain zone, cold zones of cooler, inlet cone, tertiary air duct | high resistance to alkali attack and abrasion, mixable with REFRA-SiC 50 AR to obtain AR-Mixcrete | vibrating |
| REFRA-SiC 50 AR | inlet chamber, riser duct, conical parts of lower cyclones, bypass, cooler benches (hot zone), reducing conditions | very high resistance to alkali, chloride and sulfate attack, very high thermal shock resistance, reducing coating formation | vibrating |
| REFRACLAY 25 | all cyclone stages, raw meal ducts, gas ducts | very high resistance to alkali, chloride and sulfate attack | vibrating |
Low Cement Mixcretes
Additional flexibility for a thermochemically graduated lining concept is offered by the mixing capability of Refratechnik’s refractory concretes. REFRA-SiC 50 AR, being rich in SiC, can either be mixed with REFRACLAY 40 LCC fireclay castable or REFRABAUXITE 75 LCC or REFRABAUXITE 85 LCC bauxite castables respectively to get a SiC graduated mixed product.
| REFRACLAY 40 LCC / REFRA-SiC 50 AR | |||||
|---|---|---|---|---|---|
| Ratio | Bulk density g/cm3 at 1000 °C |
Max. service temperature (°C) | CCS N/mm2 at 1000 °C |
Thermal conductivity (W/m·K) at 1000 °C |
SiC % |
| 3:1 2:1 1:1 |
2.25 2.30 2.35 |
1450 1450 1450 |
90 90 80 |
2.3 2.4 2.9 |
11-15 16-20 24-28 |
| REFRABAUXITE 75 LCC / REFRA-SiC 50 AR | |||||
|---|---|---|---|---|---|
| Ratio | Bulk density g/cm3 at 1000 °C |
Max. service temperature (°C) | CCS N/mm2 at 1000 °C |
Thermal conductivity (W/m·K) at 1000 °C |
SiC % |
| 3:1 2:1 1:1 |
2.55 2.55 2.50 |
1500 1500 1500 |
100 100 90 |
2.5 2.6 3.0 |
11-15 15-19 23-27 |
| REFRABAUXITE 85 LCC / REFRA-SiC 50 AR | |||||
|---|---|---|---|---|---|
| Ratio | Bulk density g/cm3 at 1000 °C |
Max. service temperature (°C) | CCS N/mm2 at 1000 °C |
Thermal conductivity (W/m·K) at 1000 °C |
SiC % |
| 3:1 2:1 1:1 |
2.70 2.65 2.60 |
1500 1500 1500 |
130 100 90 |
2.6 2.8 3.1 |
15-19 19-23 27-31 |
| LCC AR |
Low Cement Castable Alkali resistant |
Information on refractory concretes
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