A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Method for producing aggregate and aggregate
The present invention relates to a method for producing an aggregate comprising the steps of providing a starting product comprising at least 20 mass% magnesium silicate hydrate, comminuting to a fineness corresponding to a BET surface area of 0.1 m2/g or less, homogenizing the starting product, and at least partially dehydrating the starting product to remove bound water by heat treatment in a heat treatment device, contacting the dehydrated starting product with CO2 wherein CO2 reacts with the dehydrated magnesium silicate hydrate and CO2 is bound in the resulting magnesium carbonate hydrate and/or magnesium carbonate, and pressing and compacting the dehydrated starting product into a solid before or after contacting with CO2 to produce the aggregate. The invention further relates to an aggregate.
本发明涉及生产骨料的方法，其包括以下步骤：提供包含至少20质量％硅酸镁水合物的起始产物，粉碎至对应于BET表面积为0.1m2/g或更细的细度，使起始产物均质化，以及通过在热处理装置中进行热处理，至少部分地使起始产物脱水以去除结合水，使脱水的起始产物与CO2接触，其中CO2与脱水的硅酸镁水合物发生反应，并且CO2结合在所得的碳酸镁水合物和/或碳酸镁中，并且将脱水的起始产物在与CO2接触之前或之后压制并压实成固体以生产该骨料。此外本发明涉及骨料。
Method for producing aggregate and aggregate
The present invention relates to a method for producing an aggregate comprising the steps of providing a starting product comprising at least 20 mass% magnesium silicate hydrate, comminuting to a fineness corresponding to a BET surface area of 0.1 m2/g or less, homogenizing the starting product, and at least partially dehydrating the starting product to remove bound water by heat treatment in a heat treatment device, contacting the dehydrated starting product with CO2 wherein CO2 reacts with the dehydrated magnesium silicate hydrate and CO2 is bound in the resulting magnesium carbonate hydrate and/or magnesium carbonate, and pressing and compacting the dehydrated starting product into a solid before or after contacting with CO2 to produce the aggregate. The invention further relates to an aggregate.
本发明涉及生产骨料的方法，其包括以下步骤：提供包含至少20质量％硅酸镁水合物的起始产物，粉碎至对应于BET表面积为0.1m2/g或更细的细度，使起始产物均质化，以及通过在热处理装置中进行热处理，至少部分地使起始产物脱水以去除结合水，使脱水的起始产物与CO2接触，其中CO2与脱水的硅酸镁水合物发生反应，并且CO2结合在所得的碳酸镁水合物和/或碳酸镁中，并且将脱水的起始产物在与CO2接触之前或之后压制并压实成固体以生产该骨料。此外本发明涉及骨料。
Method for producing aggregate and aggregate
生产骨料的方法以及骨料
BELLMANN FRANK (author)
2024-09-27
Patent
Electronic Resource
Chinese
IPC:
C01B
NON-METALLIC ELEMENTS
,
Nichtmetallische Elemente
/
B01D
SEPARATION
,
Trennen
/
C01F
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
,
Verbindungen der Metalle Beryllium, Magnesium, Aluminium, Calcium, Strontium, Barium, Radium, Thorium oder der Seltenen Erden
/
C04B
Kalk
,
LIME