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Method for manufacturing electric arc furnace fume heat insulating pipe and electric arc furnace fume heat insulating pipe

A production method and technology of heat preservation pipes, which are applied in the direction of heat insulation protection of pipes, heat preservation, pipes/pipe joints/pipe fittings, etc., which can solve the problems of insufficient strength of heat preservation materials, reduced efficiency of power generation by waste heat of flue gas, and reduction of flue gas temperature, etc.

Active Publication Date: 2013-03-20
NINGXIA TIANZONG HONGGUANG COGENERATION TECH
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Problems solved by technology

[0002] Existing flue gas insulation pipelines of submerged arc furnaces mostly use simple insulation materials for pipeline insulation. Because the insulation materials do not have strength, the pipelines will be sucked flat during long-term operation; at the same time, due to the falling off of insulation materials, the reduction lower flue gas temperature, the efficiency of flue gas waste heat power generation is significantly reduced

Method used

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  • Method for manufacturing electric arc furnace fume heat insulating pipe and electric arc furnace fume heat insulating pipe

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Embodiment Construction

[0015] Such as figure 1 As shown, the flue gas pipe 1, the aluminum silicate layer 2, the barbed wire 3, the anchor 4, the asbestos board 5, and the ceramic fiber layer 6.

[0016] The manufacturing method of the flue gas insulation pipe of the submerged arc furnace comprises the following steps:

[0017] Firstly, the V-shaped screw nails used as anchors 4 are uniformly welded on the inner wall of the flue gas pipe 1, and then the inside of the flue gas insulation pipe is cleaned, mainly to remove welding slag and rust, and brush the V-shaped screw nails on the inner wall of the pipe and the V-shaped screw. Coal paint. After the paint is dry, the aluminum silicate layer 2 is laid twice in the flue gas pipe 1. During the construction, two layers of aluminum silicate layers are laminated with staggered joints. The inside shall prevail. After the two layers of aluminum silicate layers are laid, barbed wire 3 shall be laid on the aluminum silicate layer. The choice of wire mesh...

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Abstract

The invention relates to a method for manufacturing an electric arc furnace fume heat insulating pipe and the electric arc furnace fume heat insulating pipe thereof. The method comprises the following steps of welding V-shaped screw clasp nails on the inner wall of a fume pipeline; brushing a coal tar paint on the inner wall of the pipeline and the thread clasp nails; paving an aluminum silicate layer in the pipeline which is welded with the thread clasp nails and brushed with the coal tar paint; adding a steel wire net on the aluminum silicate layer; adding an asbestos plate on the galvanized steel wire net, and brushing an asphalt paint and a volatile agent on the asbestos plate; and using a ceramic fiber casting material to cast the asbestos plate, and carrying out plastering treatment, so as to obtain the electric arc furnace fume heat insulating pipe. The method for manufacturing the electric arc furnace fume heat insulating pipe can be used for manufacturing the electric arc furnace fume heat insulating pipe with the advantages that the heat insulating effect is good, and the service life is long.

Description

technical field [0001] The invention relates to the technical field of pipeline heat preservation, in particular to a method for manufacturing a flue gas heat preservation pipe of a submerged arc furnace and a flue gas heat preservation pipe of a submerged arc furnace. Background technique [0002] Existing flue gas insulation pipelines of submerged arc furnaces mostly use simple insulation materials for pipeline insulation. Because the insulation materials do not have strength, the pipelines will be sucked flat during long-term operation; at the same time, due to the falling off of insulation materials, the reduction The temperature of the flue gas is lowered, so that the power generation efficiency of the waste heat of the flue gas is significantly reduced. Contents of the invention [0003] In view of this, it is necessary to provide a method for manufacturing a submerged arc furnace flue gas insulation pipe capable of producing a submerged arc furnace flue gas insulati...

Claims

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Application Information

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IPC IPC(8): F16L59/12F16L59/02
Inventor 穆祥段学武马国龙王西来马锋岳瑞彬董伟胜马勇宁解仁刘朝晖
Owner NINGXIA TIANZONG HONGGUANG COGENERATION TECH
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