초록 ▼

Disclosed is an improvement in glass manufacturing methods of the type which involve providing water containing agglomerates of glass batch, heating the agglomerates by direct contact with furnace flue gases so as to dry them and increase their temperature, the heating being insufficient however, to

Disclosed is an improvement in glass manufacturing methods of the type which involve providing water containing agglomerates of glass batch, heating the agglomerates by direct contact with furnace flue gases so as to dry them and increase their temperature, the heating being insufficient however, to cause the agglomerates to aggregate, transporting those heated agglomerates to a fossil-fueled melter and melting them in the melter. The improvement resides in the heating being done in at least two stages, the flue gases withdrawn from one stage, heat recovered therefrom and then the cooled flue gases being introduced into the other stage. The heat withdrawn from the flue gases may be employed for beneficial purposes.

대표청구항 ▼

A method of manufacturing glass comprising: providing a first and second chamber each adapted to contain a bed of glass batch agglomerates, introducing glass batch agglomerates to said first chamber and introducing glass batch agglomerates from said first chamber to said second chamber, said batch a

A method of manufacturing glass comprising: providing a first and second chamber each adapted to contain a bed of glass batch agglomerates, introducing glass batch agglomerates to said first chamber and introducing glass batch agglomerates from said first chamber to said second chamber, said batch agglomerates being formulated to produce a glass containing less than 3 percent by weight of alkaline metal oxides, and introducing flue gases to said second chamber so as to heat said agglomerates therein, withdrawing said flue gases from said second chamber, recovering heat from said withdrawn flue gases in a heat exchanger and introducing said latter flue gases to said first chamber so as to heat said agglomerates therein, withdrawing flue gases from said first chamber and heated agglomerates from said second chamber and melting said agglomerates.