Gas-oxygen tuyeres
Gas-oxygen two wire tuyere is developed for heating and smelting of metallic furnace charge in the arc-electric furnace, also for oxygen supply needed for metal purification. Gas oxygen water-cooled tuyere is installed into the water jacket. It has separate ducts for oxygen delivery: for burning, metal purification, gas delivery, water cooling inlet and export duct. Tuyere central duct is used for delivering oxygen to the blast-furnace. Conventional gas delivery is completed through the by-pass duct of the top of the tuyere, oxygen for burning is delivered through the peripheral by-pass duct with a larger diameter. While heating and melting tuyere is used as a torch.
Parameters | Parameter value |
---|---|
"refining" oxygen consumption, max., Nm3/h (Nm3/m) | 2800 (46,67) |
"refining" oxygen pressure MPa (kgf/cm2) | 1,0÷1,2 (0,1÷0,2) |
Oxygen consumption for the burning process, max., Nm3/h (Nm3/m) | 600 (10) |
Oxygen pressure for the burning process, MPa (kgf/cm2) | 1,0÷1,2 (0,1÷0,2) |
Natural gas consumption, max., Nm3/h (Nm3/m) | 600 (10) |
Natural gas pressure, MPa (kgf/cm2) | 0,4 (4,0) |
Water consumption, m3/h, m3/min. | 30 (0,5) |
Water pressure, MPa (kgf/cm2) | 0,6 (6,0) |
External tuyere diameter, mm | 140 |
Tuyere weight, kg | 25-40* |
Water tuyere jacet
Water tuyere jacet is developed to protect gas-oxygen tuyere, it is installed into the side panel of the arc-melting furnace. Water-cooling tuyere water jacket is made of steel, its header is produced of high quality copper. Gas-oxygen tuyere installed into the dog-house is the accessory to heat and refine metal in the furnace. It has separate ducts for oxygen delivery: for burning, metal purification, gas delivery, water cooling inlet and export duct. Tuyere central duct is used for delivering refining oxygen to the blast-furnace. Conventional gas delivery is completed through the by-pass duct of the top of the tuyere, oxygen for burning is delivered through the peripheral by-pass duct with a larger diameter. While heating and melting of the metal charge tuyere is used as a torch. In the tuyere dog-house there is a device to realize pulverized coal-fuel injection.