Hardening and tempering heat preserving furnace for microcrystalline glass production

Abstract

The invention discloses a hardening and tempering heat preservation furnace for microcrystalline glass production. The furnace is used for microcrystalline glass and microcrystalline stone production.The hardening and tempering heat preservation furnace is a direct-current electric arc furnace and comprises a smoke hood, a burdening and conveying device, a first direct-current electrode, a top blowing stirring device, a water cooling furnace cover, a furnace body, a second direct-current electrode, a flow control device and a heat preservation flow channel, wherein the heat preservation furnace is provided with the first direct-current electrode and the second direct-current electrode which are matched with each other and can generate electric arcs to heat the furnace charge; the flow control device used for controlling the flow of furnace charge and the heat preservation flow channel used for transporting and discharging the furnace charge are arranged at a discharge port of the furnace body; the top blowing stirring device used for blowing gas is further installed on a cover body of the water cooling furnace cover; and the smoke hood is arranged above the furnace body and can beused for collecting smoke and reducing energy loss. The hardening and tempering heat preservation furnace is a direct-current electric arc furnace which is small in occupied area, convenient to operate, capable of achieving real continuous production, capable of saving energy and capable of enabling materials to be evenly mixed.

Description

technical field [0001] The invention relates to a quenching and tempering holding furnace, in particular to a quenching and tempering holding furnace for the production of glass-ceramics, which belongs to the field of production of glass-ceramics and building decoration materials. Background technique [0002] There are rolling method, sintering method and mold casting method in the preparation process of glass ceramics. The preparation of glass-ceramics by these methods all requires that the mixed raw materials be melted and kept at high temperature. [0003] Patent CN 104556702 B discloses a method of using metallurgical slag to prepare high-alkalinity glass-ceramics. The metallurgical slag and batch materials are mixed and put into a graphite crucible, which is placed in a high-temperature furnace or an intermediate frequency furnace for melting and heat preservation. The molten slag In-mold forming crystallization or water quenching, press molding and sintering into gla...

AI Technical Summary

Problems solved by technology

However, resistance furnaces and intermediate frequency furnaces can only be used for laboratory research and development, and cannot be used for large-scale continuous production; whether the glass melting furnace is a flame melting furnace or an electric melting furnace, the furnace occupies a large area and requires many auxiliary facilities. The kiln is damaged greatly, and the operation and maintenance are complicated; the disclosed electric arc furnace is an AC electric arc furnace with three graphite electrodes

There are few reports on the use of DC electric arc furnaces as quenching and tempering holding furnaces for the production of glass-ceramics

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