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Cold and hot double-mixing blast furnace liquid slag cutting and crushing device

A crushing device, liquid slag technology, applied in recycling technology, grain processing, etc., can solve the problems of poor recycling efficiency, environmental pollution, large water consumption, etc., and achieve the effect of good cooling efficiency

Active Publication Date: 2021-11-09
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems of the existing water-quenched blast furnace slag, the waste heat energy level is too low, the recovery efficiency is too poor, and the water consumption is large, causing serious environmental pollution.

Method used

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  • Cold and hot double-mixing blast furnace liquid slag cutting and crushing device
  • Cold and hot double-mixing blast furnace liquid slag cutting and crushing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Such as figure 1 and figure 2 As shown, a cutting and crushing device for liquid slag of a cold and hot double-mixed blast furnace in this embodiment includes a cold slag feeding mechanism 10, a hot slag feeding mechanism 20, a cutting and crushing mechanism 30, and a solidification heat exchange mechanism 40. The cold slag feeding mechanism 10 is located above the solidification heat exchange mechanism 40 , the cold slag feeding unit 10 includes a feeding hopper 11 and a cold slag conveying belt 12 , and the hot slag feeding mechanism 20 is located above the cutting and crushing mechanism 30 . The continuous hot slag flow is cut and segmented by the cutting and crushing mechanism 30, and then the liquid slag is centrifugally crushed by the high-speed rotation of the cylinder. The crushed blast furnace slag collides with the cold slag falling from the solidification heat exchange mechanism 40 and the cold slag on the surface of the solidification heat exchange drum to...

Embodiment 2

[0043]This embodiment is basically the same as Embodiment 1, the difference is that the solidification heat exchange mechanism 40 includes two solidification heat exchange rollers 41, and the two solidification heat exchange rollers are alternately placed obliquely above the cutting and crushing mechanism, one of which is the same as that of the embodiment 1 Place the same position, another roller is placed under it, the additional roller is mainly to prevent the wall sticking phenomenon caused by hot slag sputtering due to poor coordination between the amount of hot slag and the speed. When the rotating speed is too fast or too slow, the crushing angle of the liquid slag becomes larger, and the additional roller can effectively block it and perform solidification and heat exchange to prevent the slag from polluting the equipment.

Embodiment 3

[0045] This embodiment is basically the same as Embodiment 1, the difference is that a slag scraper will be provided on the right side of the solidification heat exchange drum 41, and the additional slag scraper is mainly for a small amount of penetrating through the cold slag layer and sticking to the wall of the drum The liquid slag is scraped off. When the high-temperature liquid slag is centrifuged by the cutting and crushing mechanism, the speed is too fast, causing the slag particles to penetrate the cold slag layer, which will affect the continuous operation of the equipment. for the continuous operation of the overall equipment.

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Abstract

The invention discloses a hot and cold double-mixing blast furnace liquid slag cutting and crushing device, and belongs to the technical field of hot blast furnace slag treatment in the metallurgical industry. The device comprises a cold slag feeding mechanism, a hot slag feeding mechanism and a solidification heat exchange mechanism, the cold slag feeding mechanism is arranged above the solidification heat exchange mechanism, the hot slag feeding mechanism is arranged on one side of the solidification heat exchange mechanism, the solidification heat exchange mechanism receives cold slag of the cold slag feeding mechanism, and the hot slag exchanges heat with the cold slag. The device has a good cooling and solidification effect on the basis of a high waste heat recovery temperature, the content of cooled slag glass bodies is high, and cement clinker processing is facilitated.

Description

technical field [0001] The invention belongs to the technical field of blast furnace slag treatment in the metallurgical industry, and more specifically relates to a cutting and crushing device for blast furnace liquid slag mixed with cold and hot. Background technique [0002] The iron and steel industry is one of the basic industries, and it is also an industry with high energy consumption and high emissions. Therefore, energy conservation and emission reduction have always been the development goals of the iron and steel industry technology. Since the 21st century, my country's steel industry has developed rapidly. In 2019, my country's crude steel production was 996 million tons, accounting for 53.3% of the global crude steel production. With the increase of steel production, more and more solid wastes are produced. Blast furnace slag is the main by-product of blast furnace ironmaking. After smelting various raw materials and co-solvents in the blast furnace, a mixture o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C18/14B02C18/18C04B5/00C21B3/06C21B3/08
CPCB02C18/14B02C18/18C21B3/06C21B3/08C04B5/00C21B2400/028C21B2400/05C21B2400/056C21B2400/08Y02W30/50
Inventor 陈光张璐包向军陈琰炜徐朝成张秋波
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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