Melting device for producing inorganic fibers

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...

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

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