Back to results
US 12,338,153 B2Granted
Method for producing mixed raw material, method for producing molten glass, method for producing glass article, apparatus for producing molten glass, and apparatus for producing glass article
AssigneeAGC Inc.
InventorTerutaka Maehara
Life of this patent
Estimating the term…
Abstract
A mixed raw material producing method for producing a mixed raw material includes preparing a glass raw material and an aqueous solution of sodium hydroxide; causing the aqueous solution to absorb carbon dioxide gas, to deposit sodium hydrogen carbonate in the aqueous solution; and mixing the sodium hydrogen carbonate with the glass raw material, to obtain a mixed raw material to be charged into a melting furnace.
Claims12
A method of producing a mixed raw material, comprising:
- preparing a glass raw material and an aqueous solution of sodium hydroxide;
- exposing the aqueous solution to carbon dioxide gas, such that the carbon dioxide gas is absorbed in the aqueous solution and sodium hydrogen carbonate is deposited in the aqueous solution;
- mixing the sodium hydrogen carbonate with the glass raw material such that a mixed raw material comprising the sodium hydrogen carbonate and the glass raw material is obtained;
- and
- heating the mixed raw material before charging the mixed raw material into a melting furnace such that the sodium hydrogen carbonate is converted to sodium carbonate and the carbon dioxide gas is released,
- wherein at least a portion of the carbon dioxide gas released in the heating of the mixed raw material is absorbed in the aqueous solution.
3 more elements
Dependencies are inferred from the claim text.