Granulating device for molten steel or iron slag

A technology for liquid steel slag and iron slag, which is applied in the field of granulation devices, can solve the problem of insufficient utilization of heat, and achieve the effects of simple structure, uniform particle size and good application prospect.

Inactive Publication Date: 2013-10-23

WEIFANG QIANGLI SHIPPING PROD CO LTD

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AI-Extracted Technical Summary

Problems solved by technology

[0003] In actual industrial production, there are still many problems in the granulation and waste heat recovery of steel slag or iron slag, resulting in the large amount of heat carried by steel slag and iron slag not being fully utilized

Lafal nozzle, Venturi tube or other combined nozzle compo...

Abstract

The invention discloses a granulating device for molten steel or iron slag. The granulating device comprises a combined spray pipe composed of a reducing pipe and an increasing pipe, wherein the throat part of the combined spray pipe is provided with a molten slag pipe vertical to the axis of the throat part of the combined spray pipe, and cooling air flow exists in an outside space of the combined spray pipe and the molten slag pipe. Due to the adoption of the technical scheme, when flowing out of the pipe, molten steel or iron slag is impacted and cooled by high-speed air flow at the throat part to form granulated slag, and the granulated slag sprayed through the spray pipe is mixed with the outside cooling air flow and further cooled so as to be rapidly solidified.

Technology Topic

AirflowMolten slag +2

Image

Examples

Experimental program(1)

Example Embodiment

[0021] Examples such as figure 1 As shown, a granulation device for liquid steel slag or iron slag includes a combined nozzle 1 composed of a tapered tube and a divergent tube, and a throat perpendicular to the combined nozzle 1 is arranged at the throat of the combined nozzle 1 The outer space of the combined nozzle 1 and the slag pipe 2 has a cooling airflow.

[0022] When molten steel slag or iron slag flows out of the pipeline, it is impacted and cooled by the high-speed airflow at the throat to form granulated slag. The granulated slag sprayed from the nozzle is mixed with the external cooling airflow, and further cooled to make it rapidly solidified.

[0023] In the above embodiment, such as figure 2 As shown, the combined nozzle can also be composed of a venturi 3.

[0024] In the above embodiment, such as image 3 As shown, the combined nozzle can also be constituted by the Rafar nozzle 4.

[0025] In the above embodiment, the arrangement of the slag pipe 2 on the peripheral wall of the throat of the combined nozzle 1 can be one or more.

[0026] Such as Figure 4 As shown, when the slag pipe 2 is one, the slag pipe 2 is arranged perpendicular to the throat axis, the lower end of the slag pipe 2 communicates with the throat of the combined nozzle 1 and the upper portion communicates with the slag tank 5.

[0027] Such as Figure 5 As shown, when there are multiple slag pipes 2 and when the number of slag pipes is even, the multiple slag pipes are symmetrically arranged with a center line perpendicular to the throat axis;

[0028] When the number of slag pipes is odd and more than one, one of them is located at the center and is arranged perpendicular to the throat axis, and the other slag pipes are perpendicular to the throat axis and symmetrically arranged with a slag pipe in the center as the center.

[0029] The invention adopts the above-mentioned scheme, the structure of the invention is simple, it is convenient to arrange and use, and the obtained steel slag or iron slag has relatively small and uniform particle size. This method will provide a new solution to the problem of steel slag or iron slag granulation and waste heat recovery, which will help it be more fully utilized in the steel industry. Therefore, this method has good application prospects.

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Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

Simple structure
Easy to set up and use

Granulating device for molten steel or iron slag

A technology for liquid steel slag and iron slag, which is applied in the field of granulation devices, can solve the problem of insufficient utilization of heat, and achieve the effects of simple structure, uniform particle size and good application prospect.

AI-Extracted Technical Summary

Problems solved by technology

Abstract

Image

Examples

Example Embodiment

PUM

Description & Claims & Application Information

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