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Rapid overhauling method for blast furnace hot air main pipe refractory lining

A hot blast main pipe and refractory lining technology, which is applied to blast furnaces, blast furnace details, blast furnace parts, etc., can solve the problems of inability to operate blast furnaces, inconvenient methods for hot blast stove shutdown and maintenance, removal of refractory linings for shutdown maintenance, and re-laying, etc. problems, to achieve safe and reliable engineering quality, reduce maintenance engineering costs, and improve construction efficiency

Active Publication Date: 2019-05-10
MCC5 GROUP CORP SHANGHAI
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional method of shutting down and overhauling the hot blast furnace cannot completely dismantle and rebuild more than 500 tons of refractory linings in a small space and in a short period of time, let alone the normal production and operation of the blast furnace
[0004] Therefore there is above-mentioned inconvenience and problem in the method for known hot-blast stove shutdown maintenance

Method used

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  • Rapid overhauling method for blast furnace hot air main pipe refractory lining

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Embodiment 1

[0033] The construction process of the method for quickly overhauling the refractory lining of the blast furnace hot blast main pipe of the present invention: refractory bricks are hoisted to the hot blast main pipe platform → the blast furnace is shut down → the hot blast branch pipe connection short pipe is removed, the fire blocking blind plate and the fire blocking wall are installed → the old corrugated pipe of the hot blast main pipe Dismantling→cooling down→opening the upper part of the hot blast main pipe→removing the refractory lining of the hot blast main pipe and branch pipes→installing the new corrugated pipe of the hot blast main pipe→constructing the refractory lining of the hot blast main pipe→cleaning the construction area→removing the fire blind plate and the fire retaining wall→installing the hot air The branch pipe is connected to the short pipe → the oven heats up.

[0034] The method for quickly overhauling the refractory lining of the blast furnace hot bla...

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Abstract

A rapid overhauling method for a blast furnace hot air main pipe refractory lining is characterized by comprising the following steps that a, building material preparing is conducted; b, cooling is conducted; c, holes are formed in the upper portion of a hot air main pipe; d, refractory lining dismounting is conducted; e, refractory lining building is conducted; and f, fire stop blind plate and fire stop wall dismounting is conducted. The rapid overhauling method for the blast furnace hot air main pipe refractory lining has the advantages that the dismounting step design is reasonable, the operability of the overhauling method is high, and simultaneous multi-point dismounting and building are conducted; and through the multi-point crossed construction manner, the project quality is safe and reliable, rapidness and convenience are achieved, the construction efficiency is improved, and the overhauling project cost is reduced.

Description

technical field [0001] The invention relates to a blast furnace refractory lining overhaul, in particular to a method for quickly overhauling the blast furnace hot blast main pipe refractory lining. Background technique [0002] Due to the long-term operation of the hot blast main pipe under high temperature and high pressure, the refractory lining at each intersection and compensator is prone to loosening and collapsing, causing the shell to burn red and deform, thereby affecting the normal production of the blast furnace. It is necessary to overhaul and replace the refractory linings of the blast furnace hot blast main pipe and branch pipes. [0003] The total length of the hot blast main pipe of the No. 3 blast furnace in the steel plant (to the three forks of the hot blast surrounding pipe) is 117 meters, and the diameter of the main pipe is φ2860mm. It is connected to 1#--4# hot blast stoves through hot blast branch pipes. The total weight of the hot blast main pipe and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B9/10
Inventor 任社安雷智慧谢明洪李晓霞
Owner MCC5 GROUP CORP SHANGHAI
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