Refractory heat-preservation structure capable of improving service life of clarifying tube

Abstract

The invention discloses a refractory heat-preservation structure capable of improving the service life of a clarifying tube, which comprises a bottom brick, a filling layer, side bricks, a glass fluid conveying pipeline, a cover brick and a suspended brick, wherein the bottom brick, the side bricks arranged on the two sides of the bottom brick and the cover brick arranged on the side bricks are commonly enclosed to form a heat-preservation channel; the filling layer is filled in the heat-preservation channel; the glass fluid conveying pipeline is enwrapped by the filling layer; and the suspended brick passes through the cover brick to extend into the filling layer and is not in contact with the glass fluid conveying pipeline. The refractory heat-preservation structure has the advantages that by using the reasonable refractory heat-preservation structure, the situation that a refractory material and a ramming material in contact with the glass fluid conveying pipeline cause the oppression to the clarifying tube due to high-temperature creep is restrained, so that the glass fluid conveying pipeline is protected; and through enhancing the structure at the bottom part, the collapse of the bottom brick and the glass fluid conveying pipeline caused by the creep and other factors of a refractory heat-preservation material at the bottom part is prevented.

Description

Technical field [0001] The invention relates to a structure for clarified glass of TFT---LCD glass substrate, including a support structure of a glass liquid transmission pipeline and a bottom refractory material. Background technique [0002] In the active matrix LCD coating process, the coating temperature is required to be above 600°C. At this temperature, alkali metal ions such as sodium have a high mobility, which will pollute the dielectric material and reduce the life of the element, so low alkali content is required ; At the same time, in the process of manufacturing TFT, it needs to go through repeated heating and cooling, and the glass needs to have better heat resistance; in addition, there are relatively strict requirements on the thermal expansion coefficient and chemical stability. So TFT---LCD glass substrate adopts alkali-free borosilicate glass. [0003] The clarification tube is one of the key equipment in the production of TFT-LCD glass substrate. It is responsi...

AI Technical Summary

Problems solved by technology

However, due to the serious pollution of arsenic to the environment, the content of arsenic needs to be strictly controlled in the production process of glass substrates, and tin oxide with weak clarification ability is used to clarify the molten glass. At the same time, due to the low solubility of tin oxide in the molten glass, When the content is higher than 0.2%, cassiterite will be produced, so the content of tin oxide needs to be strictly controlled, which makes the clarification of the glass more difficult

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