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 5/193 (2006.01) C03B 5/225 (2006.01) C03B 5/235 (2006.01) C03C 1/00 (2006.01) C03C 13/00 (2006.01)

Patent

CA 2207509

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 Sb2O5 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.

L'invention porte sur une méthode de vitrification produisant moins d'émissions toxiques, dans laquelle les agents d'affinage classiques, tels que le Na2SO4, le As2O5 ou le Sb2O5, sont utilisés en quantités moindres en combinaison avec de l'eau dissoute. Les sources d'eau lors de la vitrification comprennent les hydroxydes de métaux alcalins, les bulles de vapeur dans le verre en fusion, la combustion avec immersion en présence de H2 et de O2 et la combustion d'hydrocarbures. La qualité du verre n'est pas diminuée.

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