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Blast furnace body preassembly technique

A pre-assembled, blast furnace technology, applied in blast furnace, blast furnace details, blast furnace parts and other directions, can solve problems such as restricting the smooth development of engineering projects, complicated blast furnace body installation process, reverse transportation, and limited hoisting sites, etc. cost, shortening the installation period, and the effect of shortening the construction period

Inactive Publication Date: 2016-09-28
XINXING DUCTILE IRON PIPES CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The installation process of the blast furnace body is complex, with high precision requirements and a long construction period, which is crucial to the entire blast furnace project
In many cases, the blast furnace expansion is carried out on the basis of the old blast furnace. Without pre-assembly, various installation difficulties will inevitably occur, which restricts the smooth development of the project
On the other hand, the blast furnace expansion is often carried out on the basis of the old blast furnace, and the transportation and hoisting sites are limited

Method used

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Embodiment Construction

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0030] The purpose of pre-assembly is to shorten the installation period. Through pre-assembly, the blanking size of the furnace shell, the rolling ellipticity, the concentricity of the furnace body, the overall furnace height, the elevation and size of the tap hole, the elevation and size of the tuyere, and the cooling wall opening can be found in time. Problems such as hole size can be adjusted in time to save time for the overall installation.

[0031] In o...

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Abstract

The invention discloses a pre-assembly process of a blast furnace body. A temporary pre-assembly platform is set up in a different place, and the furnace shells prepared by blanking coils are welded in groups of belts, and 13 belt furnace shells are grouped into six sections of furnace shells. Each section is assembled For butt welding, measure and set the center point and center line of the blast furnace on the temporary pre-assembled platform, then set up the furnace shell support on the temporary platform, and assemble the furnace shell. Iron gates are opened on the shell and riveted, and temporary brackets are installed on the furnace shell, and the hot air surrounding pipes are butt-welded; then the stave and throat steel bricks are pre-installed, and the pre-assembled sixth belt furnace shell is removed. The riser is then reinforced and welded. The process of the invention can assemble some small components together for overall hoisting, improve the installation efficiency, reduce the cost of the crane shift, reduce the cost for the construction unit, reduce the construction period, and put the blast furnace into production in advance, bringing considerable economic benefits to the enterprise. The application prospect Very broad.

Description

technical field [0001] The invention relates to the field of equipment installation, in particular to a blast furnace body pre-assembly process. Background technique [0002] At present, the installation of large-scale blast furnaces has higher and higher requirements on the construction period and cost. The installation process of the blast furnace body is complex, requires high precision, and the duration of the construction period is long, which is crucial to the entire blast furnace project. In order to complete the installation of the blast furnace body in the shortest possible time, one is to ensure the output value and profit of the enterprise, and the other is not to affect the overall production balance of the enterprise. The pre-assembly technology is applied before the formal installation of the blast furnace. The installation process of the blast furnace body is complex, with high precision requirements and a long construction period, which is crucial to the enti...

Claims

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Application Information

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IPC IPC(8): C21B7/00
CPCC21B7/00
Inventor 史胜民时琳于世奎刘华
Owner XINXING DUCTILE IRON PIPES CO LTD
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