F - Mech Eng,Light,Heat,Weapons – 27 – D
Patent
F - Mech Eng,Light,Heat,Weapons
27
D
F27D 3/16 (2006.01) C21C 5/46 (2006.01) F27D 3/18 (2006.01)
Patent
CA 2109122
2109122 9218819 PCTABS00017 A method for submerged injection of materials into a liquid pyrometallurgical bath by means of a lance, characterised in that a first gas consisting of or containing oxygen is conveyed to said bath along a first path within the lance, a combustible fluid is conveyed to said bath along another path within the lance, and a further gas consisting of or containing oxygen is conveyed to said bath along a further path within the lance, the first path being arranged so that the first gas acts as a coolant for the lance. A lance for submerged injection of materials into a liquid pyrometallurgical bath, comprising an outer end portion to be submersed in the bath, an outer lengthwise extending tubular member, an inner lengthwise extending tubular member positionned within the outer tubular member, an annular duct being thereby defined between the outer and inner tubular members for conveying a gas consisting of or containing oxygen to an open outer end thereof, a conduit positioned within and extending lengthwise of the inner tubular member for conveying further gas consisting of or containing oxygen to the outer end portion of the lance, a lengthwise passage being thereby defined between the inner tubular member and the conduit for conveying combustible fluid to the outer end portion of the lance, at least one port providing communication between the passage and the annular duct and at least one exit passageway providing communication between the conduit and the annular duct at a location downstream of the port or ports, for directing the further gas flowing from the conduit into the annular duct.
Denholm William Thomas
Taylor Robert Norton
Commonwealth Scientific And Industrial Research Organisation
Kirby Eades Gale Baker
LandOfFree
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