Abstract: Provided is a burner which includes a pipe having a free end region designed to be housed in a furnace quarl. The pipe includes one or more fuel feed ducts surrounded over part of their length by a sheath which defines an oxidizer feed channel and is fastened to a flange. A jacket is disposed around at least part of the length of the end region so as itself to be housed in the quarl and to define a feed channel for a second oxidizer between the jacket and the internal wall of the quarl. The jacket is fastened to a flange for securing to the quarl and the flange for the sheath is fastened to that for the jacket. The burner has particular applicability in industrial furnaces, especially for melting non-ferrous materials, for rehearing or for annealing.

Abstract: The oxy-fuel burner comprises at least one fuel supply pipe (16) and at least one pipe (18) for supplying an oxygen-rich gas, the said outlets of the pipes being directed approximately in the same direction, the burner being designed to be mounted through a wall of a furnace with the pipes directed into the furnace. It carries at least one auxiliary member (50, 60) intended to act on the flame and the said auxiliary member (50, 60) is placed on the burner upstream of the zone where the fuel gas and the oxygen-rich gas meet.

Abstract: The invention relates to a method of combustion, in which waste, especially household and/or industrial waste, is subjected to a process (T) comprising at least one step in which the waste is pyrolysed and a gas mixture containing hydrocarbons is created, and then a step in which gaseous hydrocarbons are brought into contact with steam and with an oxidizing agent, and resulting in the production of a final gas mixture (FM) containing carbon monoxide and hydrogen, and then at least part of the carbon monoxide and of the hydrogen is used, as a mixture, as fuel, for example in a blast furnace (F) or in a cement kiln.

Abstract: A device for atomizing a liquid fuel comprising a central liquid fuel feed passage for feeding with liquid fuel an outer atomizing-gas feed passage for feeding with atomizing gas, these being coaxial overall,an atomizing head extending said passages, the head being equipped for each fluid with one or more ducts which converge into one or more nozzles made in the head and emerging in a combustion region in which the nozzles release a mixture of atomized liquid fuel and of atomizing gas, which head is held at the end of the coaxial passages by a nut screwed onto a wall of the outer passage,wherein the central liquid-fuel feed passage is surrounded by the atomizing-gas feed passage and the atomizing head includes a skirt surrounding inlets to the ducts for the liquid fuel, which skirt is received inside the central passage and the skirt and the said passage respectively have externally and internally complementing cross sections.