发明名称 FREMGANGSMAADE OG APPARAT TIL SMELTNING OG RAFFINERING AF GLAS ELLER LIGNENDE MATERIALE SAMT ANVENDELSE AF FREMGANGSMAADEN TIL FREMSTILLING AF SODA-KALK-SILIKATGLAS
摘要 <p>Method and apparatus are provided for refining glassy material or the like by vacuum. The material is first melted and then introduced into a vacuum chamber, preferably into space above liquid held in the chamber. Other aspects involve a two-step melting process preparatory to the vacuum refining, in which the material is initially liquefied in one stage and dissolution of particles is substantially completed in a second stage. The molten material is preferably foamed immediately upon entry into the vacuum chamber.</p>
申请公布号 DK167391(B1) 申请公布日期 1993.10.25
申请号 DK19860006335 申请日期 1986.12.30
申请人 PPG INDUSTIES INC. 发明人 KUNKLE, GERALD ERASMUS;WELTON, WRIGHT MONTGOMERY;SCHWENNINGER, RONALD LEE
分类号 C03B3/00;C03B3/02;C03B5/00;C03B5/04;C03B5/14;C03B5/225;C03C3/078;C03C3/087;(IPC1-7):C03B5/225 主分类号 C03B3/00
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