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"Roiceram-C" hot gas flow control valve |
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| AGC Ceramics has developed in collaboration with NKK
Corporation (now, JFE Steel Corporation) a hot gas flow control valve that can
control the flows from each furnace tuyere. Since 1986, we have supplied over
130 of these valves. With the adoption of the "Roiceram-C"
as a key material for the system, we have contributed to innovations in blast
furnace operation. We have achieved stability of furnaces, reduction in the refractory
temperature at the furnace bottom and prolongation of tapping time. Presently,
hot gas flow control valves using "Roiceram-C" are used not only for blast furnaces,
but for other purposes as well. |
| 1. |
It has a simple butterfly-shaped structure. |
| 2. |
The valve material consists of AGC Ceramics's dense
silicon carbide "Roiceram-C600" which is resistant to gases at high temperature
(1300°C), high pressure (0.5MPa), and high velocity (120m/S), and it shows almost
no heat loss while controlling gas flow. |
| 3. |
"Roiceram-C600" is oxidation-resistant and stable
at high temperatures. It rarely exhibits creep and fatigue behavior, and has longer
operating life. |
| 4. |
Ensures seal proof at the valve stem. |
| 5. |
The driving unit uses an electric actuator,
allowing remote operation through a direct current signal providing valve position
signal. |
| 6. |
The valve's cartridge construction guarantees
easy mounting and dismantling, and it can also be mounted on bent tubes. |
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