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Gas-blowing and slag-gathering spray gun for assisting slag-off of molten iron and using method of spray gun

A spray gun and molten iron technology, which is applied in the direction of charge control, lighting and heating equipment, furnace components, etc., can solve the problems of high iron loss, long slag removal time, and easy corrosion of molten iron tanks, etc., to reduce erosion wear, reduce mechanical damage, The effect of wear rate reduction

Active Publication Date: 2013-05-22
武汉钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to overcome the defects of the existing air blowing slag accumulation spray gun and top lance air blowing slag accumulation method, such as long slag removal time, high iron loss, and easy corrosion of molten iron tanks, and provide an efficient, economical, and low maintenance auxiliary molten iron Air blowing and slag gathering spray gun for slag removal and its use method

Method used

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  • Gas-blowing and slag-gathering spray gun for assisting slag-off of molten iron and using method of spray gun
  • Gas-blowing and slag-gathering spray gun for assisting slag-off of molten iron and using method of spray gun
  • Gas-blowing and slag-gathering spray gun for assisting slag-off of molten iron and using method of spray gun

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Embodiment Construction

[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0032] like figure 1 As shown, an air blowing slag gathering spray gun for assisting molten iron slag removal includes a gun barrel 1 having an open end 1.1 and a closed end 1.2. The central axis is symmetrically provided with a spout 2, the central axis of the spout 2 is perpendicular to the central axis of the gun barrel 1, and the ratio of the inner diameter of the spout 2 to the inner diameter of the gun barrel 1 is 0.50:1. The nozzle 2 is made of ordinary carbon steel seamless pipe, which is welded vertically and radially symmetrically along the axis of the barrel 1.

[0033] V-shaped anchors 3 are evenly arranged on the outer side of the closed end 1.2 of the gun barrel 1 and the outer side of the pipe wall connected to the closed end 1.2, and the V-shaped anchors 3 are covered with a refractory castable layer 4 . The V-shaped...

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Abstract

The invention discloses a gas-blowing and slag- gathering spray gun for assisting slag-off of molten iron and a using method of the spray gun. The gas-blowing and slag-gathering spray gun comprises a gun barrel, wherein the gun barrel is provided with an opening end and a closed end; spray ports are symmetrically formed on the barrel wall, close to the closed end, of the gun barrel based on the middle axis of the gun barrel; the middle axes of the spray ports are vertical to the middle axis of the gun barrel; and the ratio of the inner diameters of the spray ports to the inner diameter of the gun barrel is (0.35-0.70):1. The gas-blowing and slag-accreting spray gun has the characteristics of being simple in structure, long in service life, stable in gas-blowing and slag-accreting operation and the like. The gas-blowing and slag-gathering spray gun disclosed by the invention is combined with the using method of the spray gun, so that the molten iron slag gathering degree can be improved, the bare area of the molten iron is increased, the erosive wear to the molten iron tank wall is small, the slag-off iron loss is low and the slag-off time is short.

Description

technical field [0001] The invention relates to the technical field of molten iron pretreatment and slag removal, in particular to an air blowing slag accumulation spray gun for assisting molten iron slag removal and a method for using the same. Background technique [0002] Hot metal pretreatment and slag removal technology is one of the key technologies of the clean steel production platform, and hot metal pretreatment and slag removal is an essential process in the production process of the modern iron and steel industry. [0003] The traditional process is to use a slag remover to remove the molten iron slag on the molten iron surface. The slag remover is equipped with a slag remover. Due to the shape limitation of the molten iron tank and the slag remover, the slag remover cannot extend to the back wall of the molten iron tank, resulting in It is difficult to remove molten iron slag in this area; at the same time, due to the dispersion and floating of molten iron slag o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C7/072B22D43/00F27D3/15
Inventor 欧阳德刚余明红魏伟王安军李具中
Owner 武汉钢铁有限公司
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