Rotary spray gun for use in molten iron desulfurization

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...

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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, due to the fixed design of the existing injection equipment, the reaction between the granular magnesium and the sulfur in the molten iron has problems such as low utilization rate.

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