Naniwa Roki is a sole specialized plant manufacturer for castiroon melting facilities in Japan.
- Cupola
- Electric furnace material charging system
- Cupola accessaries
- Energy recovery
- Metal heat exchanger
- Econo-therm (heat exchanger)
- Wuerz-type heat exchanger
- Material charging system
- Exhaust gas cooler
- Dust collector
- Melting control system
- Ladle transfer system
- Rotary furnace
- Waste materials melting and solidifying system
Providing a new-age cupola waste heat recovery system
Feature
- We,a pioneer of melting technology, offer state of the art exhaust gas control system.(This system was developed by Würz GmbH of Küttner group.)
- Effective use of exhaust gas energy(Heat recycle)leads to energy saving of workshop.
- Integration of heat exchanger and exhaust gas cooler realizes space saving of installation area.
- Materialization of anti-global warming measures.
Comparison of different types of heat exchanger
| NR metallic-type heat exchanger | Metallic-type heat exchanger made by other | Econo-therm heat exchanger | Würz-type heat exchanger | |
Hot blast temperature(Outlet) |
450～550°C | 450～650°C | 550～700°C | 550～650°C |
Exhaust gas temperature at the inlet of heat exchanger |
700～750°C | 700～850°C | 800～950°C | 650～800°C |
Pressure loss (blast side ) |
150～200mmH2O | 150～250mmH2O | 150～300mmH2O | 200～300mmH2O |
Pressure loss
(exhaust gas side) |
50～100mmH2O | 50～100mmH2O | 50～80mmH2O | 50～100mmH2O |
Durability |
5～10years | 5～10years | 10years～ | 10～15years |
Maintenance service |
impossible | impossible | possible | possible |
Consumables |
none | none | consumable heat transfer media | consumable steel shotballs |
Note: The data are dependent on actual aperating conditions and the state of the foundries.
