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Melting device for producing inorganic fibers

A melting device, inorganic fiber technology, applied in the direction of inorganic raw material rayon, furnace, retort furnace, etc., can solve the problems of energy consumption, low furnace lining life, poor heat resistance, etc., to ensure operation and high combustion efficiency. Effect

Inactive Publication Date: 2018-09-18
北京钢研新冶工程技术中心有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process uses coke combustion as the heat source, so it is difficult to precisely control the temperature. The temperature difference between the various areas in the furnace is large, the stability of the production process is difficult to maintain, and the stability of product quality is poor.
Moreover, due to insufficient coke combustion, a large amount of polluting smoke and dust are produced
The traditional cupola furnace body is built with ordinary refractory bricks, the lining life is short, and the heat resistance is poor. During production, a large amount of cooling water is required to cool the furnace body
Therefore, the traditional process has the disadvantages of energy consumption, high water consumption, low furnace lining life, and large pollutant discharge

Method used

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  • Melting device for producing inorganic fibers

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Embodiment

[0023] When in use, rocks (such as basalt, diabase, dolomite, etc.) or iron slag are used as the main raw materials and fed into the melting device through the feeding port. Natural gas enters the annular combustion chamber through the fuel pipe network, and at the same time, the combustion-supporting air system sends a large amount of oxygen-enriched air into the combustion chamber. After the combustion control system ignites the burner, it starts to burn and releases a large amount of heat. At high temperature, the material in the melting device gradually becomes molten, and reaches the viscosity and crystallization degree required by the process, flows out through the orifice and enters the next process of centrifugal spinning to make inorganic fibers. The combustion exhaust gas can be discharged into the atmosphere after being strictly purified by the smoke exhaust purification system.

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PUM

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Abstract

The invention provides a melting device for producing inorganic fibers. The inorganic fibers include rock wool fibers, mineral cotton fibers, glass wool fibers, ceramic (aluminum oxide) fibers, aluminum silicate fibers and the like. The melting device comprises a furnace body steel structure, a refractory material, a combustion system, an electric control system and the like. A melting furnace takes natural gas as a hot source, can realize accurate air-fuel ratio control in a whole combustion power range by adopting a high-speed combustion energy saving technology and a combustion control system and can realize automatic switching of flame modes at different furnace temperatures to acquire the optimal heat efficiency. The device is low in energy consumption and long in service life of a furnace liner, the accurate control of a inside-heater temperature field is realized, the product quality is conveniently controlled and the equipment operates conveniently and safely. As for the refractory material, an anti-seepage fusion cast brick masonry plus an anti-seepage material is used as a furnace inner liner, and an outer liner is prepared from a composite insulation material, a light-weight insulation brick and the aluminum silicate fiber cottons, so that the refractory material does not need to be cooled with cooling water.

Description

technical field [0001] The invention relates to a production device for inorganic fibers, in particular to a melting device for producing inorganic fibers such as rock wool fiber, slag wool fiber, glass wool fiber, ceramic (alumina) fiber and aluminum silicate fiber. Background technique [0002] Rock wool, slag wool, glass wool, etc. belong to inorganic heat insulation, heat preservation, and sound absorption materials. The main raw materials are rocks (such as basalt, diabase, dolomite, etc.) Cotton silk-like inorganic fibers made by centrifugal method or blowing method. The traditional production process is to use the combustion reaction of coke in the cupola to melt the mixed ore raw materials. After the ore raw material is melted, the melt enters two sets of movable chutes through the orifice at the bottom of the cupola, and then is introduced into the centrifuge to enter the fiber-forming process. This process uses coke combustion as the heat source, and it is diffic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B37/04C03B37/06C03B5/04C03C13/06C04B35/10C04B35/622C04B35/18C03B5/43C03B5/235C03B5/24D01F9/08
CPCD01F9/08C03B5/04C03B5/16C03B5/235C03B5/24C03B5/43C03B37/04C03B37/06C03C13/06C04B35/62236C04B35/62245
Inventor 李殿杰王金飞胡日荣
Owner 北京钢研新冶工程技术中心有限公司
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