Compound de-foaming agent suitable for bottle ware glass production

Abstract

The invention discloses a compound de-foaming agent suitable for bottle ware glass production. The compound de-foaming agent mainly comprises a main component and a solvent component, wherein the main component comprises a foam breaker composed of titanium compounds, a foam wall thinning agent composed of sodium nitrate and potassium nitrate and a solvent combustion efficiency optimizer ferrocene; the solvent component contains diesel oil, aviation kerosene, heavy oil or mixture thereof at any ratio; the flashing point of the solvent is at 38 DEG C or above; and the main component is dissolved in the solvent or is suspended in the solvent in a sold particle state. The compound de-foaming agent disclosed by the invention can form new small bubbles on a floating molten glass bubble wall so as to achieve the function of thinning the foam wall, and meanwhile, can boost the foam breaking in the manner of reducing the local viscosity and surface tension of the bubble wall so as to accelerate the breaking of bubble layers on the molten glass surfaces in different temperature areas of a kiln without increasing the highest temperature of a bottle ware kiln, so that the foam discharging efficiency of the molten glass can be increased, and the influence of the bubble defects of the bottle ware glass can be reduced.

Description

Technical field [0001] The invention belongs to the technical field of melting during the production of bottle and container glass, and more specifically relates to a composite defoamer suitable for the production of bottle and container glass. Background technique [0002] In the production process of bottle and container glass, CO will be released due to the high temperature decomposition and melting of raw materials such as silica sand, feldspar, soda ash and nitrate. 2 , NO / NO 2 , H 2 A large amount of gas such as O forms a large number of bubbles in the glass liquid. The bubble layer almost covers the non-material covered area in the glass furnace of bottle and container. The thickness of the bubble layer is 10mm-100mm. At the same time, because the glass of bottle and container usually has There are colors, such as green or brown beer, blue glass bottles for oral liquids, etc. The use of colorants causes the temperature gradient of the glass liquid in the depth direction to ...

AI Technical Summary

Problems solved by technology

[0004] However, although the use of clarifying agent can promote the increase of a large number of bubble diameters to float to the surface of the glass liquid, since the surface tension of the glass liquid itself does not change, except for a few bubbles with particularly large diameters, they will rupture after floating to the surface of the glass liquid. After the bubbles float to the surface of the molten glass, they will gather together and stack up to form a foam layer. The existence of the foam layer prevents the floating efficiency of the bubbles in the molten glass on the one hand, and on the other hand, it will form between the molten glass and the burning flame on the upper part of the kiln. A layer of reflective and heat-insulating layer, which affects the absorption of heat by the glass liquid

By continuously heating the glass liquid to promote the discharge and rupture of the bubbles, on the one hand, the existence of the foam layer will affect the heating efficiency; In order to ensure the bursting of all bubbles on the surface of the molten glass, the temperature of the molten glass must be heated to a high level, which will consume a lot of energy. At the same time, the long-term ultra-high temperature will also affect the overall life of the glass furnace for bottles and containers.

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