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High-temperature metallurgical furnace and method for making compound insulation structure used for high-temperature metallurgical furnace

A technology of high temperature treatment and composite heat preservation, which is applied in the field of heat insulation materials, metallurgical furnaces and high temperature treatment furnaces, can solve the problems of poor heat insulation effect of heat preservation structure and high manufacturing cost, achieve good heat insulation effect and reduce energy consumption , the effect of high production efficiency

Active Publication Date: 2010-02-03
XIAN CHAOMA SCI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for manufacturing a composite thermal insulation structure for high-temperature metallurgical furnaces and high-temperature treatment furnaces, which has simple steps, convenient operation, high production efficiency, and the manufactured The composite thermal insulation structure has reasonable structure and good thermal insulation effect, which can effectively solve the practical problems of poor thermal insulation effect and high manufacturing cost of existing high-temperature metallurgical furnaces and high-temperature treatment furnaces.

Method used

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  • High-temperature metallurgical furnace and method for making compound insulation structure used for high-temperature metallurgical furnace
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  • High-temperature metallurgical furnace and method for making compound insulation structure used for high-temperature metallurgical furnace

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Effect test

Embodiment 1

[0038] Such as figure 1 , figure 2As shown, the heat preservation structure made by the present invention includes a cylindrical heat preservation cylinder 6 and a heat preservation cover 7 and a heat preservation bottom plate buckled at the upper and lower openings of the heat preservation cylinder 6. The heat preservation cover 7 and the heat preservation bottom plate are both circular and both The structure is the same. Such as image 3 As shown, the manufacturing method of the high-temperature metallurgical furnace and the high-temperature treatment furnace composite insulation structure of the present invention comprises the following steps:

[0039] Step 1, making the insulation cylinder 6, the insulation cylinder 6 is a single-section insulation cylinder segment or is composed of multiple insulation cylinder segments with the same structure, the inner diameter of the insulation cylinder 6 is 300-2000mm, and the outer diameter is 360-2500mm and a height of 500-4000mm...

Embodiment 2

[0065] In this embodiment, in step 102, the graphite paper 1 is first wound on the steel mandrel, and then the flat soft carbon felt impregnated with phenolic resin is evenly wound on the outer surface of the graphite paper 1, and then the steel mandrel is wrapped. The mandrel, together with the graphite paper 1 and the flat soft carbon felt wound on it in turn, are placed in a carbonization furnace as a whole and carbonized at a temperature of 1000°C to make a density ≥ 0.2g / cm 3 1. A cylindrical hardened carbon felt lining 2 with an inner diameter of 1000 mm and a thickness of 40 mm. The raw materials in the high-temperature adhesive described in steps 103 and 202 are phenolic resin, SiC and SiO 2 The weight ratio is 9:1:1.5, and the thickness of the flat soft carbon felt 2 3 is 40mm. The thickness of the ceramic fiber felt 4 in steps 104 and 203 is 60 mm. The thickness of the ceramic fiber cloth 5 in steps 105 and 204 is 5 mm. In step 106, place the segment of the compos...

Embodiment 3

[0069] In this embodiment, in step 102, the graphite paper 1 is first wound on the steel mandrel, and then the flat soft carbon felt impregnated with phenolic resin is evenly wound on the outer surface of the graphite paper 1, and then the steel mandrel is wrapped. The mandrel, together with the graphite paper 1 and the flat soft carbon felt wound on it in turn, are placed in a carbonization furnace as a whole and carbonized at a temperature of 1200°C to make a density ≥ 0.2g / cm 3 1. A cylindrical hardened carbon felt lining 2 with an inner diameter of 2000 mm and a thickness of 60 mm. The raw materials in the high-temperature adhesive described in steps 103 and 202 are phenolic resin, SiC and SiO 2 The weight ratio is 12:2:3, and the thickness of the flat soft carbon felt 2 3 is 100mm. The thickness of the ceramic fiber felt 4 in steps 104 and 203 is 100mm. The thickness of the ceramic fiber cloth 5 in steps 105 and 204 is 8mm. In step 106, place the segment of the composi...

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Abstract

The invention discloses a high-temperature metallurgical furnace and a method for making compound insulation structure used for the high-temperature metallurgical furnace. The method comprises the following steps: 1. making an insulation cylinder and 2. making an insulation cover and an insulation baseboard, which are arranged at the upper opening and the lower opening of the insulation cylinder,according to the making technology of the insulation cylinder. In the step 1, the insulation cylinder is a single insulation cylinder segment or is formed by splicing a plurality of insulation cylinder segments with the same structure. The making process of the insulation cylinder segment is as follows: making an inner core mould, using the inner core mould to process and make hardened carbon feltliners, evenly winding and pasting a layer of flat board soft carbon felt II, a layer of ceramic fibre felt and a layer of ceramic fibre cloth for fastening on the external moulded surface of the hardened carbon felt liner in sequence, thus obtaining a compound insulation cylinder segment, and carrying out curing molding on the compound insulation cylinder segment. The method of the invention issimple in steps, convenient in operation and high in production efficiency, and the made compound insulation structure is reasonable and good in insulation effect, thus effectively solving the practical problem that the existing high-temperature metallurgical furnaces and the insulation structures used for the high-temperature metallurgical furnaces have poor heat insulation effects and high making cost.

Description

technical field [0001] The invention belongs to the technical field of composite thermal insulation and thermal insulation materials for metallurgical furnaces and high-temperature treatment furnaces, and in particular relates to a method for manufacturing a composite thermal insulation structure for high-temperature metallurgical furnaces and high-temperature treatment furnaces. Background technique [0002] High-temperature metallurgical furnaces and high-temperature treatment furnaces use the principle of medium-frequency induction heating to heat the graphite heating element to a temperature range of 1000-2800°C, requiring the temperature of the back wall of the thermal insulation system to drop below 180°C to protect the FRP shell Insulating varnish that can last for a long time or keep copper inductors safe to use. Under normal circumstances, such equipment at home and abroad use soft carbon felt to wrap around the graphite heating element for heat insulation, but its ...

Claims

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Application Information

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IPC IPC(8): F27B14/00F27B14/08
Inventor 苏君明肖志超侯卫权陈青华胡振英
Owner XIAN CHAOMA SCI TECH
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