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Pouring furnace base and constructing method for heating furnace

A construction method and heating furnace technology, applied in heat treatment furnaces, lighting and heating equipment, furnaces, etc., can solve the problems of poor support strength and pressure resistance, short life, reduced production efficiency, etc., and achieve support strength and pressure resistance. Strong, long service life and reasonable structure

Inactive Publication Date: 2005-02-23
SHANDONG TAISHAN STEEL GROUP
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AI Technical Summary

Problems solved by technology

The main disadvantages of the furnace bottom with this structure are: long construction time and short service life, especially in the case of overhaul, the furnace will be shut down for a long time, which can greatly reduce production efficiency
At the same time, maintenance costs and overhaul costs are higher
In addition, since the high-alumina brick layer is not laid on the bottom of the slideway brick, the supporting strength and pressure resistance are poor

Method used

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  • Pouring furnace base and constructing method for heating furnace
  • Pouring furnace base and constructing method for heating furnace
  • Pouring furnace base and constructing method for heating furnace

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Effect test

Embodiment 1

[0032] In the rolling mill of Shandong Taishan Iron and Steel Co., Ltd., a high-efficiency regenerative blast furnace gas heating furnace, in July 2003, a "bulging" phenomenon occurred on the side wall of the heating furnace, which affected the pushing steel and had to be shut down for maintenance. When the construction period is tight and the task is heavy, this method is used to repair the furnace bottom in the soaking section. Only the furnace bottom repair is required, and the construction period is only 1 day, which is 10 days shorter than the conventional furnace repair process and saves material costs by nearly 30. The direct economic benefit is nearly 4 million yuan. After the furnace was started for production, the oxidation burning rate decreased by one percentage point, the accumulation of oxide scale on the bottom of the furnace was significantly reduced, the cleaning cycle was increased from 15 days to half a year, and the labor intensity of workers was significantl...

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Abstract

A heating furnace pouring furnace base and constructing method are disclosed. The heating furnace pouring furnace base consists of furnace base insulating layer1, clay bricking layer2, high-alumina brick3 and slideway brick4. The slag-resistant pouring material layer5 is arranged on the clay bricking layer2, high-alumina brick3 and slideway brick4 are embedded in slag-resistant pouring material layer5 by 'T' shape. The slag-resistant pouring layer 5 is poured by second times, The first time for pouring slag-resistant pouring material layer is after clay bricking layer2 being built. After high-alumina brick3 and slideway brick4 have been embedded by 'T' shape, then the slag-resistant pouring material layer is poured for second time. It achieves high compressing strength and long using life.

Description

technical field [0001] The invention belongs to the improvement of a furnace bottom of a heating furnace and a construction method thereof, in particular to a pouring furnace bottom of a heating furnace and a construction method thereof, which are suitable for the construction and quick repair of the soaking bed bottom of a steel rolling heating furnace in an iron and steel metallurgy enterprise. Background technique [0002] At present, most of the soaking bed furnace bottoms of rolling heating furnaces used in iron and steel metallurgical enterprises are composed of furnace bottom insulation layer, clay brick layer, high alumina brick layer and slideway bricks. The bricks are sandwiched between adjacent rows of high-alumina bricks. The slideway bricks are placed horizontally. The upper edge of the slideway bricks exposes the high-alumina brick layer. The furnace needs to be shut down for maintenance. The main disadvantages of the furnace bottom of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D9/70F27D1/00F27D3/02
Inventor 高振民周连海栾贻民王飞陈培敦杨波王道学
Owner SHANDONG TAISHAN STEEL GROUP
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