Method for locally repairing bricked ladle working liner

A technology of working lining and ladle, which is applied in the direction of manufacturing tools, metal processing equipment, casting molten material containers, etc., can solve the problems such as damage to the working lining of brick ladles, and achieve the effects of improving service life, reducing costs, and reducing emissions

Inactive Publication Date: 2013-02-27
JIUQUAN IRON & STEEL GRP
View PDF9 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to aim at the deficiencies and shortcomings of the above-mentioned prior art, and provide a method for partial repair of the working lining of the brick ladle, which can effectively solve the probl

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] The 120-ton refined steel ladle of Jiuquan Iron and Steel (Group) Co., Ltd. Carbon Steel Sheet Plant is produced by Keli Refractories Co., Ltd. The usage conditions are as follows: the permanent layer is spinel castable, and the physical and chemical performance index: Al 2 o 3 ≥65%, bulk density ≥2.6g / cm3, room temperature pressure ≥25Mpa, high temperature pressure ≥50Mpa, room temperature flexural resistance ≥3.0 Mpa, high temperature flexural resistance ≥3.0 Mpa. The working lining of the cladding is magnesia-carbon bricks, with physical and chemical performance indicators: MgO≥78%, C≥12%, bulk density≥2.9 g / cm3, normal temperature and pressure≥35Mpa. The bottom working lining is magnesia carbon bricks, physical and chemical performance indicators: MgO ≥ 78%, C ≥ 12%, bulk density ≥ 2.9 g / cm3, normal temperature pressure ≥ 35Mpa. The working lining of the slag line is produced by Dashiqiao Minzheng Weiziyu Furnace Material Factory. It is a magnesia carbon brick with...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method for locally repairing a bricked ladle working liner. The method comprises a step of slag line brick patch repair and a step of wall-wrapping brick patch repair. In the step of slag line brick patch repair, the damaged part is dismantled in the shape of an inverted triangle and then replaced by ladle bricks of the original material and shape after dismantling. In the step of wall-wrapping brick patch repair, the patch repair is performed by local transverse dismantling method in which a severely-damaged ladle brick and two bricks on the left and the right sides and concentric to the ladle brick are dismantled using a pneumatic pick, which are replaced by bricks of the original material and shape after dismantling. The method disclosed by the invention adopts the ladle bricks of the original material and shape, does not need much investment, prevents the whole ladle from being dismantled due to local severe damage, maintains the original service life of the ladle by means of patch repair, and reduces the cost of refractory material per ton steel. For a low-life ladle with a local damage, the whole ladle does not need to be out of service in advance or dismantled by means of patch repair, which can effectively reduce the labor intensity of workers, reduce the discharge of waste refractory materials and bring good environmental benefits.

Description

technical field [0001] The invention relates to the technical field of production in the steel smelting industry, in particular to a method for partially repairing the working lining of a brick ladle. Background technique [0002] At present, domestic LF and RH furnace refining ladle walls basically adopt two forms of castables and ladle bricks, and most steel plants at the slag line use ladle bricks for masonry, and ladle bricks are used to line the refining ladle in the domestic steel industry application is very common. However, compared with the working lining of ladle brick and castable material, in the case of severe local corrosion, the repair of the working lining of ladle brick often becomes a big problem. The following three types of problems may occur during the use of ladle bricks. (1) Due to the influence of the smelting environment, the local erosion of the working lining is uneven, and the erosion speed is too fast, resulting in the overall removal of the lad...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B22D41/02
Inventor 陈建刚张晓新李伟王强左建友米新宁张双飞
Owner JIUQUAN IRON & STEEL GRP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap