Roasting furnace cover and manufacturing method thereof

A technology for a roasting furnace and a furnace cover, which is applied to the field of roasting furnace cover and its preparation, can solve the problems of buried roasting furnace operation, increased energy consumption of roasting furnace operation, and increased use cost of furnace cover, and achieves remarkable thermal insulation effect. ,Easy to open and handle,reduce the effect of running energy consumption

Active Publication Date: 2019-05-03
LUYANG ENERGY SAVING MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the bulk density of the castable is generally 1.8 to 2.6g / cm 3 , is relatively bulky, not conducive to handling, poor high temperature strength, and the general service life is 6 months; while the bulk density of special-shaped parts is relatively low, generally 0.22 ~ 0.5g / cm 3 , but its strength at high temperature is still not enough, it is easily damaged during use, and its service life is generally 12 months
Moreover, whether it is the existing castable furnace cover or the special-shaped furnace cover, its thermal conductivity is relatively high (the thermal conductivity of the castable furnace cover is generally 0.3-0.6w / m.k, and the thermal conductivity of the special-shaped furnace cover is generally 0.2 ~0.4w / m.k), resulting in the high temperature of the furnace cover surface during the operation of the roaster, which will not only increase the energy consumption of the roaster, but also bury a safety hazard for the operation of the roaster
In addition, whether it is the existing castable furnace cover or the special-shaped furnace cover, it is necessary to use different molds for preparation according to different furnace cover shapes. The dimensional accuracy of the prepared products is not high, but the cost is high
In addition, when the above-mentioned furnace cover is in use, an additional sealing material needs to be added for sealing, resulting in an increase in the use cost of the furnace cover

Method used

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  • Roasting furnace cover and manufacturing method thereof
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preparation example Construction

[0030] The present invention also provides a method for preparing the furnace cover of the roasting furnace described in the above technical solution, comprising the following steps:

[0031] a) melting and fiberizing the ceramic fiber raw materials to obtain ceramic fiber filaments;

[0032] b) Collecting the ceramic fiber filaments to obtain a ceramic fiber blank;

[0033] c) performing drum needle punching on the ceramic fiber blank to obtain an integral ceramic fiber module;

[0034] d) Cutting and calcining the integral ceramic fiber module to obtain the furnace cover of the roasting furnace.

[0035] In the preparation method provided by the invention, the ceramic fiber raw material is firstly melted. Wherein, the ceramic fiber raw material preferably includes Al 2 o 3 , SiO 2 and ZrO 2 ; The Al 2 o 3The content in the ceramic fiber raw material is preferably 32 to 56 parts by weight, specifically 32 parts by weight, 33 parts by weight, 34 parts by weight, 35 par...

Embodiment 1

[0044] The required raw materials alumina, silica powder according to Al 2 o 3 : SiO 2 = The ratio of 44:56 is mixed evenly; then it is melted at 2100°C, and the obtained melt is spun in a spinning machine, the roller frequency of the spinning machine is set at 52Hz, and the fiber forming distance is 1000mm, and the diameter is obtained. 3.4μm ceramic fiber filaments; then the ceramic fiber filaments are processed in the cotton collector to form ceramic fiber blanks with a thickness of 100mm; then the formed ceramic fiber blanks are needle-punched on a drum needle punching machine, and the formed products are needle-punched Density at 10 needles / cm 2 , bulk density is 220kg / m 3 , with a thickness of 200mm; then the formed product is cut into water-cut (water-cut pressure 22MPa) as figure 1 the shape shown, figure 1 It is a schematic diagram of the side view structure of the furnace cover provided by Embodiment 1 of the present invention, figure 1 The units corresponding ...

Embodiment 2

[0051] The required raw materials alumina, silica powder, zircon sand according to Al 2 o 3 : SiO 2 : ZrO 2 = 36:44:20 mixing ratio evenly; then melted at 2100°C, and the obtained melt was spun in a spinning machine, the roller frequency of the spinning machine was set at 53Hz, and the fiber forming distance was 1000mm, and the obtained Ceramic fiber filaments with a diameter of 3.2μm; then the ceramic fiber filaments are processed in a cotton collector to form a ceramic fiber blank with a thickness of 100mm; then the formed ceramic fiber blanks are needled in a drum needle punching machine, and the formed product Needling density is 12 needles / cm 2 , bulk density is 240kg / m 3 , with a thickness of 200mm; then the formed product is water-cut with a water-cut pressure of 22MPa; then calcined at 1100°C for 3 hours; finally, the calcined product is engraved into such as figure 2 The carbon roaster furnace cover shown. figure 2 It is a schematic diagram of the side view st...

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Abstract

The invention provides a roasting furnace cover and a manufacturing method thereof. The roasting furnace cover is formed by an integral ceramic fiber module by processing, and the volume weight of thefurnace cover is 0.2-0.26 g / cm<3>. The furnace cover provided by the invention is low in weight and easy to remove and carry; meanwhile, the furnace cover has high high-temperature intensity, low heat conductivity coefficient and collision resistance under high temperature, is not prone to being damaged, long in service life, remarkable in heat preservation and heat insulation effects, needs no extra sealing material during use, and can effectively reduce the running energy consumption of a roasting furnace. The roasting furnace cover is obtained by the steps of melting, fiber forming, cottoncollection, roller puncture, cutting and calcining on ceramic fiber raw materials. In the process of manufacturing the furnace cover with the method, no built-in handle or mold is needed, furnace covers in any shape and of precision size can be obtained by cutting, not only can the market demands for furnace covers in different shapes be met, but also the production cost of the furnace cover canbe effectively reduced.

Description

technical field [0001] The invention belongs to the field of heat insulating materials, and in particular relates to a roasting furnace cover and a preparation method thereof. Background technique [0002] The carbon roasting furnace is a device for roasting high-pressure formed carbon materials, which can indirectly heat the carbon materials according to the specified roasting temperature under the condition of being isolated from the air, so as to improve the mechanical strength and electrical conductivity of carbon products. performance and high temperature resistance. [0003] According to its structure, the carbon roasting furnace can be divided into furnace bottom, side wall, flue wall, transverse wall, furnace roof, furnace cover and flue. At present, the furnace cover of the carbon roaster is mostly made of castables or special-shaped parts with built-in handles. Among them, the bulk density of the castable is generally 1.8 to 2.6g / cm 3 , is relatively bulky, not ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27D1/18
Inventor 荆桂花赵生祥岳耀辉郑爱杰张玉磊
Owner LUYANG ENERGY SAVING MATERIALS CO LTD
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