Abstract: The invention relates to a method for processing steel slag to produce a hydraulic mineral binder with a high hardening potential and to recover iron. There is provision for this purpose to provide a feed product comprising steel slag with MnO. This feed product is further processed as a melt by introducing reducing agents into the melt. A lime saturation factor of between 90 and 110 is hereby to be achieved in the mineral melt portion. Subsequently the melt is cooled in a defined manner and elemental iron is mechanically separated from the solidified melt. The solidified melt is then supplied for use as hydraulic mineral binder.

Abstract: The invention relates to a method for producing cements by hydrothermally treating a starting material containing sources of CaO and SiO2 in an autoclave at a temperature of 100 to 300° C., and tempering the obtained intermediate product at 350 to 700° C., wherein water formed during tempering is dissipated by grinding the intermediate product and/or tempering taking place under a continuous gas stream. The invention also relates to cements obtained in this manner, hydraulic binders therefrom, and building materials which contain said binders.

Abstract: Activators for supplementary cementitious material, comprising reactive belite, obtainable by hydrothermal treatment of a starting material, which contains sources for CaO and SiO2 in an autoclave at a temperature of 100 to 300° C. and tempering the obtained intermediate product at 350 to 495° C., hydraulic binders based on the supplementary cementitious material above, and by a method for activating the supplementary cementitious material by adding reactive belite obtainable by hydrothermal treatment of a starting material which contains sources for CaO and SiO2 in an autoclave at a temperature of 100 to 300° C. and tempering the obtained intermediate product at 350 to 495° C. and the use of the reactive belite containing material as activator.

Abstract: The invention relates to a method for preparing and activating a raw material, wherein the raw material is comminuted by means of grinding rollers in a mill-classifier combination, and wherein the mill-classifier combination is set and operated to produce a ground product with a fineness of between D50=3 ?m and D50=12 ?m. Here, a part of the grinding product is comminuted by means of the mill-classifier combination to a diameter of <5 ?m. Subsequently the ground product is subjected to a further classification in an ultrafine grain classifier unit which has a separation threshold in order to separate ultrafine grain with a fineness of <D50=6 ?m. The invention further relates to an installation configuration for carrying out the method according to the invention.

Abstract: The invention relates to a method for processing steel slag to produce a hydraulic mineral binder with a high hardening potential and to recover iron. There is provision for this purpose to provide a feed product comprising steel slag with MnO. This feed product is further processed as a melt by introducing reducing agent into the melt. A lime saturation factor of between 90 and 110 is hereby to be achieved in the mineral melt portion. Subsequently the melt is cooled in a defined manner and elementary iron is mechanically separated from the solidified melt. The solidified melt is then supplied for use as hydraulic mineral binder. Furthermore the invention relates to a hydraulic mineral binder.

Abstract: The present invention relates to building materials, in particular a method for the production of a binder for concrete, mortar or plaster, and a binder produced according to this method as well the use thereof.

Abstract: The invention relates to a method for processing steel slag to produce a hydraulic mineral binder with a high hardening potential and to recover iron. There is provision for this purpose to provide a feed product comprising steel slag with MnO. This feed product is further processed as a melt by introducing reducing agents into the melt. A lime saturation factor of between 90 and 110 is hereby to be achieved in the mineral melt portion. Subsequently the melt is cooled in a defined manner and elemental iron is mechanically separated from the solidified melt. The solidified melt is then supplied for use as hydraulic mineral binder.

Abstract: The present invention relates to building materials, in particular a method for the production of a binder for concrete, mortar or plaster, and a binder produced according to this method as well the use thereof.

Abstract: The invention relates to a method for processing steel slag to produce a hydraulic mineral binder with a high hardening potential and to recover iron. There is provision for this purpose to provide a feed product comprising steel slag with MnO. This feed product is further processed as a melt by introducing reducing agent into the melt. A lime saturation factor of between 90 and 110 is hereby to be achieved in the mineral melt portion. Subsequently the melt is cooled in a defined manner and elementary iron is mechanically separated from the solidified melt. The solidified melt is then supplied for use as hydraulic mineral binder. Furthermore the invention relates to a hydraulic mineral binder.

Abstract: The invention relates to a hydraulic binding agent comprising a binding agent component having free-flowing or solidifying properties when water is added and an acceleration component which is used to accelerate solidification. The acceleration component contains ultrafine calcium hydroxide having a high specific surface and low grain size.

Abstract: The invention relates to a hydraulic binding agent comprising a binding agent component having free-flowing or solidifying properties when water is added and an acceleration component which is used to accelerate solidification. The acceleration component contains ultrafine calcium hydroxide having a high specific surface and low grain size.