An installation for the disposal of hazardous or high-energy materials with a shaft furnace type device, comprising: a) a housing, in which a reaction chamber is located, in which the materials may be brought into reaction under controlled conditions, whose end products are non-hazardous; b) a moving bed, moving from top to bottom in the reaction chamber, formed in a dynamic equilibrium between the supply of a bulk material and the materials to be disposed on the one hand and the discharge of a mixture of bulk material and residues originating from the reaction on the other hand; c) a first hot gas flow, entering over a first inlet into the reaction chamber, flowing through the middle area of the moving bed in a vertical direction upwards, and having a first temperature; d) the first inlet for the first hot gas flow being in a vertical distance above the bottom end of the reaction chamber; characterized in that e) a second inlet is provided in a vertical distance above the first inlet for a second hot gas flow, having a second temperature lower than the first temperature, and flowing through the moving bed only in a radial outer section, f) a gas flow may be supplied to the bottom end of the reaction chamber, at the gas flow having a temperature lower than the first and, if necessary, than the second temperature, and flowing through the reaction chamber from bottom to top, g) in a vertical distance above the bottom end of the reaction chamber, but below the first inlet for the first hot gas flow, an outlet is provided, over which a part of the gas flow being present there may be removed, wherein h) the outlet is connected with a burner, in which the supplied gas flow may be heated such that it forms the first hot gas flow, and that the outlet of the burner is connected with the first inlet, and/or i) the outlet is connected with the second inlet, so that at least a part of the gas flow being removed from the outlet forms the second hot gas flow. a) a housing, in which a reaction chamber is located, in which the materials may be brought into reaction under controlled conditions, whose end products are non-hazardous; b) a moving bed, moving from top to bottom in the reaction chamber, formed in a dynamic equilibrium between the supply of a bulk material and the materials to be disposed on the one hand and the discharge of a mixture of bulk material and residues originating from the reaction on the other hand; c) a first hot gas flow, entering over a first inlet into the reaction chamber, flowing through the middle area of the moving bed in a vertical direction upwards, and having a first temperature; d) the first inlet for the first hot gas flow being in a vertical distance above the bottom end of the reaction chamber; characterized in that e) a second inlet is provided in a vertical distance above the first inlet for a second hot gas flow, having a second temperature lower than the first temperature, and flowing through the moving bed only in a radial outer section, f) a gas flow may be supplied to the bottom end of the reaction chamber, at the gas flow having a temperature lower than the first and, if necessary, than the second temperature, and flowing through the reaction chamber from bottom to top, g) in a vertical distance above the bottom end of the reaction chamber, but below the first inlet for the first hot gas flow, an outlet is provided, over which a part of the gas flow being present there may be removed, wherein h) the outlet is connected with a burner, in which the supplied gas flow may be heated such that it forms the first hot gas flow, and that the outlet of the burner is connected with the first inlet, and/or i) the outlet is connected with the second inlet, so that at least a part of the gas flow being removed from the outlet forms the second hot gas flow.