Water enhanced sulfate fining process - a method to reduce...

Details Water enhanced sulfate fining process - a method to reduce... Water enhanced sulfate fining process - a method to reduce...

C - Chemistry, Metallurgy

03

C

C03C 3/087 (2006.01) C03B 5/16 (2006.01) C03B 5/225 (2006.01) C03C 1/00 (2006.01)

Patent

CA 2240007

A method of glass formation which provides for reduced levels of toxic emissions is disclosed wherein conventional batch fining agents such as Na2SO4, As2O5 or Sb2Os 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 H2 and O2, the use of hydrocarbon based combustion. Glass quality is not compromised.

On divulgue une méthode pour la production de verre, permettant de réduire le niveau d'émissions toxiques, où les agents d'affinage en discontinu, comme Na2SO4, As2O5 ou Sb2Os, sont utilisés en quantités moindres, combinées avec l'eau dissoute du procédé de fabrication du verre. Les sources d'eau du procédé renferment des hydroxydes de métaux alcalins, et il y a barbotage de vapeur d'eau dans le verre fondu, combustion avec immersion du verre fondu en présence de H2 et d'O2, et combustion à l'aide d'hydrocarbures. La qualité du verre n'est pas compromise.

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