Abstract: In a method and a device for controlling vibrations of a metallurgical vessel that occur while gas is being injected into liquid molten metal located in the metallurgical vessel, a certain total amount of gas per unit of time is injected into the liquid molten metal, and the total amount of gas being is injected into the liquid molten metal through a number of individual nozzles in the metallurgical vessel, measured values correlating with the vibrations of the metallurgical vessel occurring are being measured during the injection, wherein while keeping the total amount of gas injected per unit of time largely constant, the amount of gas injected from individual nozzles per unit of time is changed in dependence on the measured values that are measured and correlate with the vibrations of the metallurgical vessel occurring.

Abstract: The invention reveals a process and an apparatus for treating flue gas from sintering plants, in which dry additive consisting at least of adsorbent and recirculated material is added by the entrained-flow process to the flue gas from a sintering plant in a flue gas duct, and the additive is then separated out of the flue gas by fabric filters and at least partially recirculated. In this context, it is provided that additive is introduced at least one location in the opposite direction to the direction of flow of the flue gas.

Abstract: In a process for utilizing slag containing oxidic iron particles, adding a reducing agent and reducing oxidic iron particles of the slag are charging the slag into a reactor vessel onto a residual iron metal containing dissolved carbon, slowly and continuously over an extended period of time, electric heating the slag and the iron melt over an extended period of time, injecting a carbon-containing reducing agent with inert gas over an extended period of time by a lance into a region close to the boundary surface between the slag and the iron melt or directly into the iron melt, dissolving the carbon of the reducing agent in the iron melt and reducing oxidic iron particles of the slag with metallic iron and CO being formed, over an extended period of time, forming a foamed slag by the resulting CO over an extended period of time, introducing an oxygen-containing gas or oxygen into the foamed slag and postcombustion of CO to CO2 over an extended period of time, bottom flushing the reactor vessel with inert gas

Abstract: The invention reveals a process and an apparatus for treating flue gas from sintering plants, in which dry additive consisting at least of adsorbent and recirculated material is added by the entrained-flow process to the flue gas from a sintering plant in a flue gas duct, and the additive is then separated out of the flue gas by fabric filters and at least partially recirculated. In this context, it is provided that additive is introduced at at least one location in the opposite direction to the direction of flow of the flue gas.

Abstract: In a process for utilizing slag containing oxidic iron particles, adding a reducing agent and reducing oxidic iron particles of the slag are charging the slag into a reactor vessel onto a residual iron metal containing dissolved carbon, slowly and continuously over an extended period of time, electric heating the slag and the iron melt over an extended period of time, injecting a carbon-containing reducing agent with inert gas over an extended period of time by a lance into a region close to the boundary surface between the slag and the iron melt or directly into the iron melt, dissolving the carbon of the reducing agent in the iron melt and reducing oxidic iron particles of the slag with metallic iron and CO being formed, over an extended period of time, forming a foamed slag by the resulting CO over an extended period of time, introducing an oxygen-containing gas or oxygen into the foamed slag and postcombustion of CO to CO2 over an extended period of time, bottom flushing the reactor vessel with inert gas

Abstract: The invention relates to a process for treating a hydrocarbonaceous waste material, in particular a rolling scale slurry and/or grinding slurry, the waste material being heated in a dryer, preferably moving, by the indirect supply of heat, and in the process hydrocarbons, if appropriate together with other volatile components, in particular H2O, being removed. In this process, in the dryer, at low temperature, the hydrocarbons are broken down in a specific way, the hydrocarbons being broken down by chemical and/or radiation means, which effect decomposition of the hydrocarbons of low volatility into highly volatile hydrocarbons, preferably decomposing high molecular weight hydrocarbons into lower molecular weight hydrocarbons, and the hydrocarbons, if appropriate together with the other volatile components in particular together with the H2O, are at least partially discharged, in particular by suction, from the vessel. The invention also relates to a apparatus for treating a hydrocarbonaceous waste material.

Abstract: The invention relates to a process for treating a hydrocarbonaceous waste material, in particular a rolling scale slurry and/or grinding slurry, the waste material being heated in a dryer, preferably moving, by the indirect supply of heat, and in the process hydrocarbons, if appropriate together with other volatile components, in particular H2O, being removed. In this process, in the dryer, at low temperature, the hydrocarbons are broken down in a specific way, the hydrocarbons being broken down by chemical and/or radiation means, which effect decomposition of the hydrocarbons of low volatility into highly volatile hydrocarbons, preferably decomposing high molecular weight hydrocarbons into lower molecular weight hydrocarbons, and the hydrocarbons, if appropriate together with the other volatile components in particular together with the H2O, are at least partially discharged, in particular by suction, from the vessel. The invention also relates to a apparatus for treating a hydrocarbonaceous waste material.

Abstract: For effectively reprocessing iron-containing residual smelting plant materials (1 to 3), in which iron may be present both in metallic form and in oxidic form, with lowest possible energy expenditure, the residual smelting plant materials (1 to 3) are processed into agglomerates (8,11), the agglomerates (8,11) are charged into an electric arc furnace (10), melted there and reduced, and the resultant melt is refined (FIG. 1).