Abstract: A method of supplying a pulverized fuel mixture to blast furnace tuyeres comprises batch loading the pulverized fuel mixture into a discharging chamber 8 being under gauge pressure, and subsequent continuous distributing thereof from this chamber, and transportation along pipelines 15 to the blast furnace tuyeres by means of gas. According to the invention, after distributing the pulverized fuel mixture from the discharging chamber 8, a supplementary gas is introduced into each pipeline 15, the total flow rate of said gas exceeding that of the main gas 3 to 10 times, and the product of the total flow rate of gas within each pipelines 15 by concentration of the fuel mixture therewithin being maintained equal for all the tuyeres 16.

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.