Water-cooled slag groove

A water-cooled slag and water-cooled tank technology, which is applied in the field of steel rolling, can solve the problems of inability to cool the slag at high temperature, and the slag with molten iron burst, so as to ensure the flow performance, reduce the temperature of the slag, and avoid the effect of water burst.

Pending Publication Date: 2019-02-22
云南玉溪仙福钢铁(集团)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a water-cooled slag groove to solve the problem that the existing slag groove made of refractory bricks cannot cool the high-temperature slag, and the slag belt iron is prone to water explosion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] This embodiment provides a water-cooled slag groove, such as figure 1 As shown, it includes a water-cooling tank 1 made of steel. A water-cooling chamber 2 is arranged in the water-cooling chamber 1. A partition plate is used to separate a cooling channel in the water-cooling channel 2. A circulating water inlet 21 is provided at one end of the cooling channel. One end is provided with a circulating water outlet 22 .

[0031] Applying the characteristics of high-efficiency and rapid heat exchange of steel, the steel plate is used to roll the slag groove according to the required size of the slag groove to replace the slag groove drop opening constructed by the original refractory brick and ramming material. The upper and lower surfaces of the slag groove are preferably semi-circular arcs, and the middle In the water cooling chamber 2, a circular cooling water channel is made in the form of a clapboard labyrinth, and the inlet and outlet of the circulating water are exte...

Embodiment 2

[0033] In this embodiment, on the basis of Embodiment 1, it is further defined that: both the inlets and outlets of the circulating water are in communication with the blast furnace cooling soft water system.

Embodiment 3

[0035] In this embodiment, on the basis of Embodiment 1, it is further defined that: the cooling water channels are arranged in a serpentine shape and more than two cooling water channels are arranged in the water cooling cavity 2 .

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Abstract

The invention discloses a water-cooled slag groove. The water-cooled slag groove comprises a steel water cooling groove. A water cooling cavity is arranged in the water cooling groove. Cooling water channels are separated from the water cooling cavity by a partition plate. One end of the cooling water channels are provided with a circulating water inlet, and the other end of the cooling water channels are provided with a circulating water outlet. A slag groove made of a refractory brick is replaced by using a washing-resistant steel-making water cooling groove, the service life of the slag groove is prolonged, and the service period is at least 12 months, the slag falling point in the test period is basically stable, and the production safety is improved. The structure is simple and the manufacture is convenient, and the cost is only one third of the slag groove built by refractory brick. The replacement and installation are simple and convenient, and maintenance time is not needed. The cooling area can be determined according to the length of the slag groove. The high-temperature flowing property of the furnace slag is guaranteed, and meanwhile, the furnace slag temperature is reduced to the maximum degree before water quenching, so that the phenomenon that the slag strip iron is water explosion is avoided.

Description

technical field [0001] The invention relates to the technical field of steel rolling, in particular to a water-cooled slag groove. Background technique [0002] The falling point of blast furnace dry slag made of refractory bricks combined with ramming materials is easily damaged during the high-temperature slag washing process, resulting in changes in the falling point of dry slag due to the deepening of the wear of the slag ditch outlet, while the high-pressure nozzle of the slag flushing water is fixed , when the high temperature slag falls into the slag groove mold, it is not cooled, quenched and broken up in time because the falling point retreats, so the slag and the cast iron slag groove mold are prone to adhesion and blockage. [0003] The high-temperature slag needs to shorten the distance in the slag ditch section to ensure fluidity, and the water quenching process needs to maintain a stable angle between the falling point and the three nozzles of the slag flushing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27D3/15
CPCF27D3/1545
Inventor 李凤宝黄发文杨冬学
Owner 云南玉溪仙福钢铁(集团)有限公司
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