Water enhanced fining process a method to reduce toxic emissions

Details Water enhanced fining process a method to reduce toxic emissions Water enhanced fining process a method to reduce toxic emissions

1997-06-09

1999-07-13

Chin, Peter

Glass manufacturing

Processes

Fining or homogenizing molten glass

651343, 651344, 651345, 651349, C03B 516, C03B 518, C03B 5225

Patent

active

059220970

ABSTRACT:
A method of glass formation which provides for reduced levels of toxic emissions is disclosed wherein conventional batch fining agents such as Na.sub.2 SO.sub.4, As.sub.2 O.sub.5 or Sb.sub.2 O.sub.5 are used in lesser amounts in combination with dissolved water in the glass making process. Sources of water in the process include alkali-metal hydroxides, steam bubbled into the molten glass, submerged combustion of the glassmelt with H.sub.2 and O.sub.2, the use of hydrocarbon based combustion. Glass quality is not compromised.

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"Mathematical Models Of Bubbles Growth And Dissolution in Glass Meets", F. Kramer, Gas Bubbles In Glass--International Commission on Glass.

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