The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 25, 1984
Filed:
Aug. 14, 1981
Dolbenko E Tikhonovich, Moscow, SU;
Semenov N Nikolaevich, Moscow, SU;
Gussak L Abramovich, Moscow, SU;
Astafiev A Alexandrovich, Moscow, SU;
Khazanov M Semenovich, Moscow, SU;
Moroz V Iosifovich, Moscow, SU;
Semenov E Semenovich, Moscow, SU;
Eletsky S Alexandrovich, Volgodonsk, SU;
Silvio Borrello, Genoa, IT;
Pietro Tixi, Genoa, IT;
Abstract
The burner for metallurgical furnaces comprises a main combustion chamber (7) and an auxiliary combustion chamber (5) presenting a plurality of outlet channels (6) communicating with the main combustion chamber (7). To the main combustion chamber there is fed in a pulsating manner a primary mix of fuel gas and air in stoichiometric ratio, and, during the intervals between the feed pulses, a secondary mix of fuel gas and air with a coefficient of excess air of 1.15 to 1.35 and at a rate of flow corresponding to 1 to 3% of the nominal rate of flow. To the auxiliary combustion chamber (5) there is instead continuously fed an auxiliary mix of fuel gas and air with a coefficient of excess air of 0.65 to 0.85 and at a rate of flow corresponding to 1 to 3% of the rate of flow of the primary mix. The combustion products of the auxiliary mix stay in the auxiliary combustion chamber (5) for a very short time, more particularly for about from 0.005 to 0.01 sec., so that they still contain, when they enter into the main combustion chamber (7), active chemical substances, and particularly hydrogen atoms and radicals containing hydrogen atoms.