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Dry-type treatment equipment for AOD (Argon Oxygen Decarburization) stainless steel slag and afterheat recycling method

A stainless steel slag, dry treatment technology, applied in waste heat treatment, lighting and heating equipment, furnace components, etc., can solve the problems of no slag treatment and sewage treatment, dust pollution, short process, etc., to achieve novel structure, processing Simple, easy-to-use effects

Inactive Publication Date: 2018-08-03
DALIAN DESIGN INST CO LTD CHINA FIRST HEAVY IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The difference between the two methods (advantages and disadvantages): the "semi-dry method" has a short process, a simple process, and no sludge treatment and sewage treatment links
However, in the process of spraying and cooling in both methods, there is a problem of dust pollution caused by AOD stainless steel slag meeting the cold self-powdering dust rising and rising with the hot air (water vapor).

Method used

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  • Dry-type treatment equipment for AOD (Argon Oxygen Decarburization) stainless steel slag and afterheat recycling method
  • Dry-type treatment equipment for AOD (Argon Oxygen Decarburization) stainless steel slag and afterheat recycling method
  • Dry-type treatment equipment for AOD (Argon Oxygen Decarburization) stainless steel slag and afterheat recycling method

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Effect test

specific Embodiment approach 1

[0041] Specific examples of the present invention are attached figure 1 with 3 As shown, the AOD stainless steel slag dry processing equipment includes: sealing equipment 3, sealing cover 4, primary dust collector 6, slag powder storage 7, waste heat boiler 8, secondary dust collector 10, conveying device and connecting pipeline;

[0042] The sealing device 3 is pit type; the top is equipped with a sealing cover 4, and a labyrinth water seal is arranged between the sealing device 3 and the sealing cover 4. The upper end of the retaining wall of the sealing device 3 is concave, and the lower end of the sealing cover 4 is convex. , Concave-convex fit when fastening, and liquid water is applied in the middle of the groove to form a water seal to strengthen the sealing effect.

[0043] The sealing device 3 is provided with a plurality of cooling air nozzles 2, and the cooling air nozzles 2 are connected to the cooling fan F-1 through the pipe iG-1;

[0044] The wall of the seali...

specific Embodiment approach 2

[0056] Specific examples of the present invention are attached figure 2 As shown, the AOD stainless steel slag dry processing equipment includes: sealing equipment 3, sealing cover 4, primary dust collector 6, slag powder storage 7, waste heat boiler 8, secondary dust collector 10, conveying device and connecting pipeline;

[0057] The sealing device 3 is an above-ground type and is installed in the room; a sealing cover 4 is installed on the top, and a labyrinth water seal is arranged between the sealing device 3 and the sealing cover 4. It is in a convex shape, and the concave-convex fits when buckled, and liquid water is applied in the middle of the groove to form a water seal, which strengthens the sealing effect.

[0058] The sealing device 3 is provided with a plurality of cooling air nozzles 2, and the cooling air nozzles 2 are connected to the cooling fan F-1 through the pipe iG-1;

[0059] The wall of the sealing device 3 is provided with a vacuum bell mouth 5, and ...

specific Embodiment approach 3

[0065] Specific examples of the present invention are attached Figure 4 As shown, the AOD stainless steel slag dry processing equipment includes: sealing equipment 3, sealing cover 4, primary dust collector 6, slag powder storage 7, waste heat boiler 8, secondary dust collector 10, conveying device and connecting pipeline;

[0066] The sealing device 3 is pit type; the top is equipped with a sealing cover 4, and a labyrinth water seal is arranged between the sealing device 3 and the sealing cover 4. The upper end of the retaining wall of the sealing device 3 is concave, and the lower end of the sealing cover 4 is convex. , Concave-convex fit when fastening, and liquid water is applied in the middle of the groove to form a water seal to strengthen the sealing effect.

[0067] The sealing device 3 is provided with a plurality of cooling air nozzles 2, and the cooling air nozzles 2 communicate with the external atmosphere through the pipe iG-1;

[0068] The wall of the sealing ...

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Abstract

The invention discloses a dry-type treatment equipment for AOD (Argon Oxygen Decarburization) stainless steel slag and an afterheat recycling method, and relates to treatment and afterheat recycling equipment for AOD stainless steel slag and a using method of the equipment. The treatment equipment comprises sealing equipment, a sealing cover, a primary dust collector, a slag powder library, an afterheat boiler, a secondary dust collector, a conveying device and a connecting pipeline, wherein the sealing cover is mounted on the top of the sealing equipment; a cooling air ejector nozzle formed in the sealing equipment is connected with a cooling air blower through a pipe i; a dust collection bell mouth formed in a wall of the sealing equipment communicates with the upper part of a side wallof the primary dust collector; a discharging hole formed in the bottom of the primary dust collector is connected with the slag powder library through conveying equipment i; an air outlet formed in the top part of the primary dust collector is connected with an afterheat boiler through a pipe iii; an afterheat boiler is connected with the secondary dust collector through a pipe iv; a discharging hole formed in the bottom part of the secondary dust collector is connected with the slag powder library through conveying equipment ii; and the secondary dust collector is connected with a negative pressure air blower through a pipe v, and the negative pressure air blower is connected with external atmosphere through a pipe vi. The dry-type treatment equipment disclosed by the invention has the characteristics of novel structure, simpleness and convenience in processing, convenience in use, environmental-friendly dust collection, no need of secondary processing on steel slag and the like.

Description

technical field [0001] AOD stainless steel slag (400 series) dry processing equipment and waste heat recovery method described in the present invention relate to a kind of AOD stainless steel slag treatment and waste heat reuse equipment and its use method. Background technique [0002] Currently known AOD stainless steel slag treatment methods are typically "wet method" and "semi-dry method". "Semi-dry method" is divided into "slag pan semi-dry method" and "hot splash semi-dry method". The "slag pan semi-dry method" is derived from the "hot splash semi-dry method". [0003] The "wet" treatment process of AOD stainless steel slag is divided into four steps: the first step is to place the slag pan (or tank, barrel) containing the molten AOD stainless steel slag in the atmosphere, and wait for the heat to be lost to a certain extent ( slag temperature drops to a certain temperature), spray cooling water on it, except that part of the cooling water evaporates directly, and so...

Claims

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Application Information

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IPC IPC(8): C21B3/08F27D17/00
CPCC21B3/08F27D17/004F27D2017/006Y02P10/20Y02P10/25
Inventor 陈新勇袁国明谢谦张项伟吴博
Owner DALIAN DESIGN INST CO LTD CHINA FIRST HEAVY IND