Patent ID: 8201418
Filing Date: 2012-06-19
Classification: C03B,Y02P

Abstract:
1. A process for preparing glass from pulverulent batch materials in a furnace comprising sidewalls, a crown, an end wall and at least one air injector combined with at least one gaseous or liquid fuel injector, wherein said at least one air injector and at least one gaseous or liquid fuel injector are positioned in said crown said process comprising injecting air and gaseous or liquid fuel through said injectors to generate flames, whereby the liquid or gaseous fuel combusts with the air to generate a flame only in the immediate vicinity of the zone where said pulverulent batch materials cover the glass bath; wherein the injection of air and of gaseous or liquid fuel is carried out via a burner comprising at least one approximately cylindrical inner duct for the fuel and an outer duct for the air that is concentric to the inner duct; and wherein a specific impulse of the air injector combined with at least one of the gaseous or liquid fuel injector is between 2 and 4 N/MW.