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公开(公告)号：US3837832A
公开(公告)日：1974-09-24
申请号：US33628573
申请日：1973-02-27
申请人： PPG INDUSTRIES INC
发明人： PECORARO G , MC CONNELL J , KNAVISH L
摘要： In the production of high-quality flat glass by the float process, tridymite-frost stone defects are safely avoided by providing burners in the refiner zone of the furnace to shield the crown of that portion of the furnace from contact with alkali vapors, and at the same time providing not only a barrier that substantially separates the refiner-zone headspace from the melter headspace but also preferably a means associated with refiner-zone headspace for exhausting or venting it.
摘要翻译： 在通过浮法工艺生产高品质平板玻璃时，通过在炉的精炼区中提供燃烧器以防止炉的该部分的顶部与碱蒸气接触，并且在 同时不仅提供将精炼区顶部空间与熔化器顶部空间基本上分开的壁垒，而且还优选地提供了一个与磨浆机顶部空间相关联的装置，用于排出或排出。
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公开(公告)号：US3746527A
公开(公告)日：1973-07-17
申请号：US3746527D
申请日：1971-05-20
申请人： PPG INDUSTRIES INC
发明人： KNAVISH L , GOLDBERG A , HILLIARD W
摘要： SUBSTANCES ARE MIXED INTO LIQUID FLOWING VISCOUSLY IN A CHANNEL OR PASSAGE BY MEANS OF GAS-CURTAIN MIXER DEVICES OF THE KIND TAUGHT IN BRITISH PAT. NO. 1,171,133. TWO SUCH DEVICES ARE USED, EXTENDING TRANSVERSELY OF THE CHANNEL OR PASSAGE AND AT AN ANGLE OF 10 TO 80 DEGREES WITH RESPECT TO THE FLOW OF LIQUID. THE UPSTREAM MIXER DEVICE EXTENDS ONLY ABOUT 88 TO 98.5 PERCENT OF THE WAY ACROSS THE PASSAGE OR CHANNEL; THE DOWNSTREAM MIXER DEVICE EXTENDS ALL THE WAY ACROSS THE CHANNEL. THIS YIELDS AN IMPROVED MIXING ACTION. THE FOREGOING CONCEPT IS APPLIED TO THE MIXING OF COLORANT INTO MOLTEN GLASS TRAVELING IN THE FOREHEARTH OF A CONTAINER-GLASS TANK. THIS REQUIRES PARTICULAR CONDITIONS OF THE USE OF THE MIXER DEVICES WITH RESPECT TO GAS-IMPINGEMENT ANGLE, SPACING BETWEEN THE DEVICES, AND ORIENTATION ANGLE OF THE DEVICES WITH RESPECT TO THE FLOW OF THE GLASS.
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公开(公告)号：US3771986A
公开(公告)日：1973-11-13
申请号：US3771986D
申请日：1972-06-01
申请人： PPG INDUSTRIES INC
发明人： STULTZ J , CAPELLMAN J , KNAVISH L
摘要： A silica-rich, volatiles-deficient surface layer is removed from highly viscous glass, near a forming means (rolls or the like). There is used a weir of less-than-usual depth that contains a platinum member that provides a substantially unchanging weir depth; at the same time, Venturi means control the amount of hot gases removed from the glass-melting furnace, to maintain or control the flow of the highly viscous glass. With the invention, it is possible to drain off the silica-rich surface of a highly viscous glass, losing only about 10 percent of the furnace throughput, rather than accepting the higher losses (about 30 percent) required in accordance with previous practices.
摘要翻译： 富含稀土的挥发物表面层从形成装置（辊等）附近的高粘度玻璃中除去。 使用一个不太平常深度的堰，其中包含一个提供基本上不变的堰深度的铂金构件; 同时，文丘里管理控制从玻璃熔化炉去除的热气体的量，以维持或控制高粘度玻璃的流动。 利用本发明，可以排出高粘度玻璃的富含二氧化硅的表面，仅损失约10％的炉子通过量，而不是接受根据先前实践所需的更高的损耗（约30％）。
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公开(公告)号：US3836349A
公开(公告)日：1974-09-17
申请号：US30095272
申请日：1972-10-26
申请人： PPG INDUSTRIES INC
发明人： KNAVISH L
摘要： Cooling of flat glass in a continuous glass-melting furnace from at least two locations within the molten glass, in combination with substantial cooling through the bottom of the furnace, enables operation of the furnace at heretofore unattainable throughputs. The use of submerged coolers in combination with bottom cooling reduces convection flow and convolutions in the glass, thereby improving the quality of the resulting glass. Signficantly reduced fuel consumption per ton of glass product is also achieved.
摘要翻译： 在熔融玻璃中的至少两个位置的连续玻璃熔融炉中的平板玻璃的冷却与通过炉底部的实质性冷却相结合，使得炉的运转至今无法达到的生产量。 使用浸没式冷却器与底部冷却相结合可以减少玻璃中的对流和卷积，从而提高所得玻璃的质量。 同时实现了每吨玻璃制品燃耗的明显降低。
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公开(公告)号：US3776710A
公开(公告)日：1973-12-04
申请号：US3776710D
申请日：1971-02-18
申请人： PPG INDUSTRIES INC
发明人： KNAVISH L , SCHORNHORST J
CPC分类号： C03B5/183
摘要： Forced cooling of the bottom of the glass in the refiner of a continuous glass-melting furnace allows changes in the thermal gradients through the glass. This reduces convection flow and convolutions in the glass and thus improves the quality of glass produced.
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公开(公告)号：US3734701A
公开(公告)日：1973-05-22
申请号：US3734701D
申请日：1971-04-29
申请人： PPG INDUSTRIES INC
发明人： PECORARO G , MCCONNELL J , KNAVISH L
摘要： In the production of high-quality flat glass by the float process, tridymite-frost stone defects are safely avoided by providing burners in the refiner zone of the furnace to shield the crown of that portion of the furnace from contact with alkali vapors, and at the same time providing not only a barrier that substantially separates the refiner-zone headspace from the melter headspace but also preferably a means associated with refiner-zone headspace for exhausting or venting it.
摘要翻译： 在通过浮法工艺生产高品质平板玻璃时，通过在炉的精炼区中提供燃烧器以防止炉的该部分的顶部与碱蒸气接触，并且在 同时不仅提供将精炼区顶部空间与熔化器顶部空间基本上分开的壁垒，而且还优选地提供了一个与磨浆机顶部空间相关联的装置，用于排出或排出。
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