Metal slit-type ladle bottom blowing powder injection apparatus

A gap-type, metal-bottomed technology, applied in the field of steel refining, can solve problems such as strong abrasion and pressure loss, and achieve the effects of improving service life, being firm and not easily deformed, and having a large adjustable range

Active Publication Date: 2013-06-19
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to overcome the deficiencies in the prior art, the present invention proposes a metal gap type ladle bottom blowing powder spraying device, through the metal gap, to solve the problems of strong abrasion of the inner wall of the refractory material gap for powder spraying by the powder air flow and large pressure loss during the powder spraying process, etc.

Method used

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  • Metal slit-type ladle bottom blowing powder injection apparatus
  • Metal slit-type ladle bottom blowing powder injection apparatus
  • Metal slit-type ladle bottom blowing powder injection apparatus

Examples

Experimental program
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Embodiment 1

[0041] In this embodiment, a metal linear slit type powder spraying element is designed, and its shape is as follows figure 2As shown, the metal linear slit-type powder spraying element is in the shape of a circular table, with a metal shell 4 on the outside and a ventilating brick 1 inside, and a slit 2 is provided in the permeable brick 1. The slit 2 is rectangular, and the inner wall is provided with a The metal plate 3 is provided with a metal bottom surface 5 at the bottom of the breathable brick 1, and a through hole is provided on the metal bottom surface 5 to communicate with the gap 2. The periphery of the metal bottom surface 5 is connected to the metal shell 4, and the bottom of the metal plate 3 is connected to the metal bottom surface 5. top at the top of the gap;

[0042] The metal gap is linear, such as image 3 As shown in (a)~3(c), the parameters are designed as follows:

[0043] (1) The inner diameter of the refractory material Φ 1 The choice is as follow...

Embodiment 2

[0050] In this embodiment, a metal annular gap type powder spraying element is designed, and its structure is as follows: Figure 4 (a), Figure 4 As shown in (b), the specific structure includes a refractory material 1, a gap 2, a metal plate 3, a metal shell 4 and a metal bottom surface 5, and a ventilating brick 1 is arranged inside, and a gap 2 is arranged in the ventilating brick 1, and the gap 2 is annular , the inner wall is provided with a metal plate 3, the bottom of the breathable brick 1 is provided with a metal bottom surface 5, the metal bottom surface 5 is provided with a through hole to communicate with the gap 2, the periphery of the metal bottom surface 5 is connected to the metal shell 4, and the bottom of the metal plate 3 is connected to the metal bottom surface 5 connection, the top of the metal plate 3 is on top of the gap;

[0051] Its specific parameters are designed as follows:

[0052] (1) The inner diameter of the refractory material Φ 1 The value...

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Abstract

The invention provides a metal slit-type ladle bottom blowing powder injection apparatus which belongs to the steel refining technical field. The apparatus comprises two parts of a metal slit-type powder injection element and an air accumulating chamber, the metal slit-type powder injection element is connected with the air accumulating chamber through flange bolts; wherein the metal slit-type powder injection element comprises an external metal shell and an refractory material which has slits inside, a metal plate is provided on an inner wall of the slit, a metal base plate is provided on the bottom of the refractory material, a through hole provided on the metal base plate is communicated with the slits, the circumference of the metal base plate is connected with the metal shell, the bottom of the metal plate is connected with the metal base plate, the top of the metal plate is positioned at the top of the slit. The invention has the advantages that the strength for powder injectionsmelting is enhanced, the strength is high at the high temperature, the metal slits are welded for difficult deformation, the apparatus of the invention has the advantages of good airtight, stable blowing, low manufacture cost, large adjustable scope of power and air amount, long usage life, safety and reliability.

Description

technical field [0001] The invention belongs to the technical field of iron and steel refining, in particular to a metal gap type ladle bottom blowing powder spraying device. Background technique [0002] Ladle bottom spraying powder refining is an emerging new technology with creativity and broad application prospects. However, since the working environment of ladle bottom spraying is worse than that of ladle bottom blowing argon mixing, the ladle bottom spraying process faces many technical problems after it is proposed. to be solved. During the powder spraying smelting process, the powder needs to be sent into the molten pool through the powder spraying components. The input range is adjustable and controllable, and the refractory material is required to be wear-resistant and corrosion-resistant and have a long service life. It is the core component of the ladle bottom powder spraying process. The powder spraying element is in the high temperature and strong powder air ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21C7/04
Inventor 朱苗勇程中福
Owner NORTHEASTERN UNIV LIAONING
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