Rotary spray gun for use in molten iron desulfurization

The technology of molten iron desulfurization and rotary spray gun is applied in the direction of improving process efficiency, which can solve the problems of high efficiency of molten iron desulfurization process, large temperature drop of molten iron, low utilization rate of sulfur, etc. The effect of sulfur residue accumulation

Active Publication Date: 2010-02-10
营口东邦环保科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The single use of the above-mentioned means cannot meet the requirements of low cost and high efficiency of the molten iron desulfurization process to a certain extent. When blowing

Method used

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  • Rotary spray gun for use in molten iron desulfurization
  • Rotary spray gun for use in molten iron desulfurization
  • Rotary spray gun for use in molten iron desulfurization

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Embodiment Construction

[0016] Such as figure 1 As shown, a rotary spray gun for desulfurization of molten iron comprises: a flange connector 1, an outer pipe 2 fixedly connected to the flange connector 1, a stirring blade 4 fixedly connected to the lower part of the stirring shaft 2, and a 2 and the refractory material layer 5 on the stirring blade 4; the stirring blade 4 is a right-angled trapezoid; the off-angle β=15° between the top refractory layer plane 8 of the stirring blade 4 and the horizontal plane. In the present invention, an inner pipe 3 can also be provided in the outer pipe 2 . Such as figure 2 , in order to prolong the service life, the cross section of the stirring blade 4 of the present invention is a "ten" structure; the thickness a of the front face 41 of the stirring blade 4 refractory material layer is greater than the back thickness b of the stirring blade 4 refractory material layer. In this way, the damage rate of the front surface 41 of the refractory material layer of t...

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Abstract

The invention belongs to the field of metallurgical equipment and particularly relates to a rotary spray gun for use in molten iron desulfurization, which comprises a flange connecting piece (1), an outer tube (2) fixedly connected with the flange connecting piece (1), a stirring blade (4) fixedly connected with the lower part of a stirring shaft (2), and a refractory material layer (5) arranged on the stirring shaft (2) and stirring blade (4), wherein the stirring blade (4) is a right trapezoid; the plane (8) of the refractory material layer on the top of the stirring blade (4) forms deflection angle beta which is more than zero DEG C and less than or equal to 45 DEG C with a horizontal plane; an inner tube (3) is arranged in the inner tube (2); the cross section of the stirring blade (4)has a 'cross' structure; and the thickness a of the front (41) of the refractory material layer of the stirring blade (4) is greater than the thickness b of the back of the refractory material layerof the stirring blade (4). The rotary spray gun is simple in structure, convenient in operation, desirable in desulfurization effect, long in service life, high in desulfurater utilization rate and free from sulfur slag accumulation.

Description

technical field [0001] The invention belongs to the field of metallurgical equipment, in particular to a rotary spray gun for desulfurization of molten iron. Background technique [0002] In order to meet the market's higher and higher requirements for steel quality and the needs of steel manufacturers to reduce costs, it has always been an important research topic in the metallurgical industry to find reasonable technological processes and effective smelting methods. Hot metal pretreatment desulfurization has been recognized as the best process for reducing sulfur content in steel in the blast furnace-converter-continuous casting process. At present, judging from the status quo of molten iron desulfurization technology, it can be divided into stirring method and injection method. The single use of the above-mentioned means cannot meet the requirements of low cost and high efficiency of the molten iron desulfurization process to a certain extent. When blowing, due to the f...

Claims

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Application Information

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IPC IPC(8): C21C7/064
CPCY02P10/20
Inventor 牟春树武允禄刘欣雨陈树村
Owner 营口东邦环保科技股份有限公司
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