Electrically Heated Tray
24.07.2018Uniqueness of this project lies in the fact that the unit has the combined heating system consisting of radiation and convection subsystems. The first subsystem allows to warm-up the fireproof cartridge up to 650-700 °C between the cycles of casting. The second subsystem performs warming-up of the volume of the ceramic foam filter immediately prior to the beginning of casting.
Task:
Filtration of aluminium melt from non-metallic inclusions through the ceramic foam insert in the line of aluminium ingot production
Customer:
RUSAL Novokuznetsk JSC, Novokuznetsk, Casthouse No. 1, conveyors No. 5 and 7
Project year:
2017
Problems prior to implementation:
- Application of asbothermosilicate plates for lining/span>
- Complex start-up of casting in case of filter porosity greater than PPI20
Key features:
- Power of radiation heaters is 10 kW (900°C)
- Power of the convection heater is 16 kW (550°C)
- Pneumatic lifting drive
- SIEMENS and Sсhnеider Electric automatic equipment
Result:
- Warming-up of the filtration chamber cartridge up to 600 °C with radiation and warming-up of the ceramic foam insert prior to casting
- Possibility of fast start-up in case of filter porosity less than PPI50
- ПChangeover to SiO2 based concretes
- Improvement of production process automation
