Limited Company
"Scientific And Industrial Company "Etalon"
455030, Zapadnoe Shosse, 15, Magnitogorsk, Russia
(3519) 580-155, mail@ntpf-etalon.ru

Arc-furnace equipment

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Gas-oxygen tuyeres

Gas-oxygen tuyerГазокислородная фурма модельGas-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.

Specification sheet of the gas-oxygen tuyere for the arc-melting furnaces*
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*
*Technical parameters, weight and size can be varied depending on a steelmaking unit

Water tuyere jacet

Water tuyere jacketWater tuyere jacket modelWater 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.

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