Cover plate glass electric melting furnace and heating method thereof

Abstract

The invention discloses a cover plate glass electric melting furnace and a heating method thereof. An upper heating furnace body and a lower liquid storage furnace body form a melting furnace pool body; a plurality of heating electrode grooves are formed in the side wall of the lower liquid storage furnace body uniformly; the heating electrode grooves are communicated with an inner cavity of the lower liquid storage furnace body; heating electrodes are arranged in the heating electrode grooves; a feeding opening and a flue opening are formed in the side wall of the upper heating furnace body;the feeding opening and the flue opening are communicated with an inner cavity of the upper heating furnace body; a plurality of heating combustion guns are distributed on the side wall of the upper heating furnace body uniformly; the heating electrodes on the side wall of the lower liquid storage furnace body and the heating combustion guns on the side wall of the upper heating furnace body perform heating simultaneously, so that the temperature difference between the surface temperature of cover plate glass liquid and the internal temperature of the glass liquid is reduced, the glass materials are melted in the melting pool completely and uniformly, the temperature of the glass liquid in the melting process can keep high enough, excessive temperature difference between the surface temperature of cover plate glass liquid and the internal temperature of the glass liquid can be avoided, and the production efficiency of glass melting is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of cover glass production, and in particular relates to a cover glass electric melting furnace and a heating method thereof. Background technique [0002] The energy used for glass melting is different, and the method of use is also different. Some use electrodes as the main, and some use fuel oil, natural gas, and burners as the main ones. The flame is yellow and the radiation is better, but for the cover glass It is not possible to use a reduction flame, but an oxidation flame, the flame is blue, the emissivity is low, and the thermal efficiency is lower in comparison. At present, natural gas and pure oxygen or natural gas and air are generally used for combustion. The residue after the combustion reaction of natural gas and air is carbon dioxide, water, oxygen, nitrogen, and nitrogen oxides. The proportion of nitrogen is relatively large, which dilutes the content of carbon dioxide and oxygen. However, ...

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Problems solved by technology

If the cost is considered, molybdenum electrodes can be used, but the amount of clarifiers arsenic oxide and antimony oxide should not be too much. If the amount is too much, the loss of Mo will increase, the life of the electrode will be shortened, and stones of Mo, As, and Sb may be generated. Therefore, Urgent need for a new glass melting furnace structure

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