Top oxygen gun blowing technology for electric furnace steel making
A technology of electric furnace steelmaking and top oxygen lance, applied in electric furnace, process efficiency improvement, furnace and other directions, can solve the problems of decarburization and slagging kinetic conditions gap, insufficient utilization of chemical energy, insufficient oxygen supply intensity, etc. , to achieve the effect of shortening smelting time, reducing smelting power consumption and high utilization rate
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[0015] For an electric furnace with a tapping capacity of 30 tons, the condition of hot charging 40% of molten iron.
[0016] There is a hole on the furnace cover. The size of the hole is 200mm. The oxygen lance is lowered to a distance of 200-1000mm from the steel liquid level through an electric lifting mechanism. The oxygen lance adopts water cooling, and the oxygen jet adopts supersonic jet, Mach The number is 1.6-2.2, the number of oxygen lance nozzles is 1, and the oxygen flow rate is 800-3000Nm 3 / h, the oxygen pressure is 0.6-1.0Mpa. The flow of water in and out of the oxygen lance is 30t / h.
[0017] The design dimensions of the oxygen lance mainly include: 1. Copper-steel composite copper head, nozzle outer diameter 180mm, nozzle inner diameter 50mm, 2 oxygen pipeline, outer diameter 120mm, inner diameter 80mm.
[0018] The lifting mechanism of the oxygen lance can perform the functions of ascending and descending, and rotating the oxygen lance.
[0019] The lifting of th...
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