The present disclosure provides a method, a system for dehydrating a gasification fine slag, and a medium thereof. The method is performed by a processor controlling a dehydration device or a detection device, and the detection device is configured to detect at least one of physical properties or chemical properties of a gasification fine slag to be dehydrated. The method includes controlling the detection device to determine characteristic parameters of the gasification fine slag to be dehydrated, and determining a judgmental characteristic index of a dehydration moder of the gasification fine slag to be dehydrated. The method includes determining a target dehydration device and controlling the target dehydration device to dehydrate the gasification fine slag to be dehydrated. The method further includes controlling the detection device to determine a residual moisture content of a dehydrated gasification fine slag, and determining whether to end a dehydration task.

The present disclosure provides a method, a system for dehydrating a gasification fine slag, and a medium thereof. The method is performed by a processor controlling a dehydration device or a detection device, and the detection device is configured to detect at least one of physical properties or chemical properties of a gasification fine slag to be dehydrated. The method includes controlling the detection device to determine characteristic parameters of the gasification fine slag to be dehydrated, and determining a judgmental characteristic index of a dehydration moder of the gasification fine slag to be dehydrated. The method includes determining a target dehydration device and controlling the target dehydration device to dehydrate the gasification fine slag to be dehydrated. The method further includes controlling the detection device to determine a residual moisture content of a dehydrated gasification fine slag, and determining whether to end a dehydration task.

The present invention relates to a novel cementitious product produced from steelworks slag additivation to obtain material having properties suitable for use in the partial or total clinker replacement for the production of different types of cement. The process, which is also object of this invention, aims to adapt the properties of steelworks slag, by means of thermochemical treatment, including and preferably, but not only, still in the liquid steelworks slag pot, taking advantage of the thermal input of steel processing, to form a greater amount of alite (essential compound to increase pozzolanicity), under controlled conditions. After additivation, preferably, but not exclusively, the additivated steelworks slag is subjected to quenching, comminution and concentration to stabilize the alite fraction, to release the present phases and to remove any excess contaminants, such as metallic iron.

The present invention relates to a novel cementitious product produced from steelworks slag additivation to obtain material having properties suitable for use in the partial or total clinker replacement for the production of different types of cement. The process, which is also object of this invention, aims to adapt the properties of steelworks slag, by means of thermochemical treatment, including and preferably, but not only, still in the liquid steelworks slag pot, taking advantage of the thermal input of steel processing, to form a greater amount of alite (essential compound to increase pozzolanicity), under controlled conditions. After additivation, preferably, but not exclusively, the additivated steelworks slag is subjected to quenching, comminution and concentration to stabilize the alite fraction, to release the present phases and to remove any excess contaminants, such as metallic iron.

The present invention relates to a novel cementitious product produced from steelworks slag additivation to obtain material having properties suitable for use in the partial or total clinker replacement for the production of different types of cement. The process, which is also object of this invention, aims to adapt the properties of steelworks slag, by means of thermochemical treatment, including and preferably, but not only, still in the liquid steelworks slag pot, taking advantage of the thermal input of steel processing, to form a greater amount of alite (essential compound to increase pozzolanicity), under controlled conditions. After additivation, preferably, but not exclusively, the additivated steelworks slag is subjected to quenching, comminution and concentration to stabilize the alite fraction, to release the present phases and to remove any excess contaminants, such as metallic iron.

For a method for granulating molten material, in particular slags, in which the molten material is introduced into a granulating chamber in which water is held as a cooling liquid, wherein the molten material is preferably quenched and granulated with evaporation of the water, an acid is added to the water.

For a method for granulating molten material, in particular slags, in which the molten material is introduced into a granulating chamber in which water is held as a cooling liquid, wherein the molten material is preferably quenched and granulated with evaporation of the water, an acid is added to the water.

Disclosed is a slag comprising, on a dry basis and expressed as the total of the metal present as elemental metal and the presence of the metal in an oxidized state, a) at least 7% wt and at most 49% wt of Fe, b) at most 1.3% wt of Cu, c) at least 24% wt and at most 44% wt of SiO.sub.2, and d) at least 2.0% wt and at most 20% wt of CaO, characterised in that the slag comprises, on the same basis, e) at least 0.10% wt and at most 1.00% wt of Zn, f) at least 0.10% wt and at most 2.5% wt of MgO, and g) at most 0.100% wt of Pb. Further disclosed are an improved object comprising the slag, a process for the production of the slag, and a number of uses of the slag, whereby the slag may comprise up to at most 1.50% wt of zinc and down to 1.0% wt of CaO.

Disclosed is a slag comprising, on a dry basis and expressed as the total of the metal present as elemental metal and the presence of the metal in an oxidized state, a) at least 7% wt and at most 49% wt of Fe, b) at most 1.3% wt of Cu, c) at least 24% wt and at most 44% wt of SiO.sub.2, and d) at least 2.0% wt and at most 20% wt of CaO, characterised in that the slag comprises, on the same basis, e) at least 0.10% wt and at most 1.00% wt of Zn, f) at least 0.10% wt and at most 2.5% wt of MgO, and g) at most 0.100% wt of Pb. Further disclosed are an improved object comprising the slag, a process for the production of the slag, and a number of uses of the slag, whereby the slag may comprise up to at most 1.50% wt of zinc and down to 1.0% wt of CaO.

The purpose of the present invention is to provide a method for recovering calcium-containing solid components from steelmaking slag, with which it is possible to easily increase the calcium recovery rate. With the method, steelmaking slag is immersed in an aqueous solution containing carbon dioxide, and calcium in the steelmaking slag is made to leach out into the aqueous solution. Next, the immersed steelmaking slag is removed from the aqueous solution, and, subsequently, the pH of the aqueous solution is increased. When solid components precipitated by doing so are recovered, it is possible to recover solid components containing 20% or more by mass in terms of calcium atoms.