Glass forming method and its dedicated melting kiln

Abstract

The invention discloses a glass forming method and its special glass-melting furnace. The furnace contains a dog-house, a fusion zone, a clarification zone and a shaper device set sequentially, and characterizes in that it comprises: a transverse access of connecting the clarification zone with the shaper device, a constriction neck of between the clarification zone and the horizontal access, a deep level water scak and a horizontal blender in the constriction neck, a calendering forming space and a horizontal drawing forming space both connected with the transverse access. The forming methodfor processing the glass using the said furnace characterizes in that comprises the following glass raw materials in the mass proportion of SiO2 71-73 %, Al2O3 1.5-2.0 %, CaO 7.1-7.6 %, MgO 3.5-4.5 %, Na2O + K2O 13-15 %, Fe2O3 0.1 % and SO3 0.2 % wherein the K2O is minute quantity, melting, clarifying, compressing and discharging in the said furnace, coarse adjusting and delicate adjusting the glass liquid temperature and forming to get the pressed glass and flat-drawn glass.

Description

technical field [0001] The invention relates to a glass forming method and a special melting furnace thereof. Background technique [0002] In the glass manufacturing industry, generally a melting furnace only produces glass products of one process, and the process system is easy to control during production. When producing glass products with two different processes, due to technical difficulties, only two melting furnaces can be used respectively, and all raw material processing and fuel preparation are performed in two sets. This will lead to a substantial increase in investment. The larger the scale of the furnace, the higher the melting rate and the lower the energy consumption. The operating costs of production are also lower. If a single kiln with a larger scale and tonnage can be used instead of two kilns, it can reduce energy consumption, reduce operating and management personnel, and thus reduce production costs. In the utility model patent No. 99245187.6, a gl...

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Problems solved by technology

In the utility model patent No. 99245187.6, a glass melting furnace that uses two kinds of processes at the same time is disclosed in the glass forming equipment. A vertical upward forming machine is replaced by a rolling glass forming machine, so that the molten glass enters two glass forming equipments through a melting belt, a clarification belt and a neck respectively, and two different glass products are produced at the same time. The upper forming process is complicated, the glass is prone to defects, and the roll cannot be changed online; after the furnace is fired, it takes longer to return to normal production than the flat drawing process; at the same time, the vertical lead-up process is difficult to produce thin glass plates, and the scrap rate is high , resulting in low economic benefits, because of the above-mentioned reasons, this process has been eliminated; They are very different, and the molding temperature and glass composition are also quite different. Using one melting furnace to meet the process requirements of flat drawing molding and calendering molding at the same time, there are still many problems that cannot be solved for a long time in the simultaneous molding of two kinds of glass products. The traditional method can only use one glass forming process in one kiln, which has a single product and relatively high investment costs; it does not meet the requirements of market development and changes

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