US 4,386,737 AGranted

Flame guniting lance

OwnerVeniamin V. Antonov, Evgeny D. Shtepa +18inventors

InventorsVeniamin V. Antonov, Evgeny D. Shtepa, Alexandr P. Krivenko, Adelaida L. Kurbatova, Ivan R. Vedkalov, Viktor M. Chervonenko, Anatoly A. Yarmal, Semen A. Donskoi, Vladimir A. Korotky, Jury I. Zhavoronkov, Vadim I. Germanov, Alexei S. Kornienko, Pavel A. Kaduba, Anatoly A. Chvilev, Edvin I. Gamalei, Fedor E. Dolzhenkov, Valentin A. Kulichenko, Pavel B. Maikher, Oleg I. Tischenko, Galia A. Atlasova

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Abstract

A flame guniting lance comprises a water-cooled casing made up of pipes (1 and 2). Arranged concentrically inside the casing are pipes (4) for supplying a mixture of powdered refractory material and fuel, and pipes (3) for supplying oxygen. Each pipe (3 and 4) is respectively fitted with a nozzle (5) for supplying the mixture of refractory material and fuel, and a nozzle (6) for supplying oxygen, the nozzles being arranged in pairs and coaxially in each pair. The outlet cross-section of each nozzle (5) is positioned below the outlet cross-section of each nozzle (6) within a distance of 1 to 5 times the inside diameter of the nozzle (5). The walls of at least one of each pair of the nozzles (5 or 6) are partly or completely other than cylindrical in shape.

Claims10

Dependent claims

A flame guniting lance comprising inner and outer tubes forming a water-cooled casing inside which are concentrically arranged spaced pipes for supplying a powdered mixture of refractory material fuel and for supply oxygen;

said pipes having nozzles for delivering said powdered mixture, fuel and said oxygen;
said nozzles being arranged in pairs longitudinally and concentrically;
said nozzles for delivering said mixture having outlet cross-sections located underneath the outlet cross-sections of the corresponding nozzles for delivering oxygen at a distance equal to 1 to 5 times the inside diameter of said nozzle for delivering said mixture;
at least one of said nozzles of each of said pairs being partly or completely other than cylindrical in cross section;
said nozzles for supplying oxygen having openings in the bottom part thereof.

2 more elements

Dependencies are inferred from the claim text.