摘要:
A method of making building materials from an aqueous solution includes receiving the aqueous solution with dissolved ions and increasing a pH of the aqueous solution so the dissolved ions precipitate from the aqueous solution as salt. The method also includes collecting the salt precipitated from the aqueous solution and forming the building materials from the salt.
摘要:
The invention provides composite materials comprising novel bonding elements exhibiting unique microstructures and chemical compositions, and methods for their manufacture and uses, for example, in a variety of concrete components with or without aggregates in the infrastructure, construction, pavement and landscaping industries.
摘要:
The invention encompasses equipment used to condition a recirculating gas stream in order to cure a CO 2 Composite Material (CCM) and processes that use such equipment to cure the CCM. The gas conditioning equipment allows for a process that controls, reduces or eliminates the rate-limiting steps associated with water removal during the curing of a composite material. The equipment may include, but will not be limited to, control over the temperature, relative humidity, flow rate, pressure, and carbon dioxide concentration within the system; which includes the conditioning equipment, any vessel containing the CCM, and the material itself. Flow rate control can be used as a means to achieve uniformity in both gas velocity and composition.
摘要:
Beim erfindungsgemäßen Verfahren zur Herstellung eines puzzolanen oder latenthydraulischen Zementklinkersubstituts wird Ton bei Temperaturen im Bereich von 500 bis 1250°C, vorzugsweise von 550 bis 1150°C, höchstvorzugsweise von 700 bis 900°C, mit einem eine mineralische Substanz aufweisenden Brennstoff kalziniert, wobei die dabei entstehende Mischung aus der mineralischen Substanz des Brennstoffs und dem kalzinierten Ton das puzzolane oder latent-hydraulische Zementklinkersubstitut bildet, wobei der Anteil der durch den Brennstoff in das hydraulische Zementklinkersubstitut eingebrachten mineralischen Substanz 1 - 60 Gew. -% beträgt.
摘要:
The invention provides compositions and methods directed to carbonation of a cement mix during mixing. The carbonation may be controlled by one or more feedback mechanisms to adjust carbon dioxide delivery based on one or more characteristics of the mix or other aspects of the mixing operation.
摘要:
본 발명은, 마그네시아 광물 분말, 상기 마그네시아 광물 분말 100중량부에 대하여 사문석 분말 25∼900중량부를 포함하며, 상기 마그네시아 광물 분말과 상기 사문석 분말은 수화반응의 활성도를 높이기 위해 600∼1000℃의 온도에서 소성 처리되어 있고, 상기 마그네시아 광물 분말의 브레인 분말도가 2,000∼10,000㎠/g 범위이고, 상기 사문석 분말의 브레인 분말도가 2,000∼10,000㎠/g 범위인 것을 특징으로 하는 무기결합재 조성물에 관한 것이다. 본 발명에 의하면, 1450℃ 이상의 고온에서 소성하는 시멘트 제품을 대신할 수 있으며, 소성온도가 낮고 이산화탄소 발생량도 적으면서 압축강도 특성이 우수하며, 수화활성도가 높고, 내구성이 우수하다.
摘要:
A system for carbon capture includes an oxy-fuel combustor for combusting a hydrocarbon with pure oxygen to produce heat energy and carbon dioxide, a COS converter for converting the carbon dioxide to COS, a transport means for transporting the COS, a sulphur recovery unit for recovering sulphur from the COS and an adjunct sulphur-burning power plant for combusting the sulphur to generate energy for powering one or more carbon capture and storage processes.
摘要:
A slag powder and cement production system capable of utilizing slag immediately after generation as a byproduct of a primary manufacturing process to recover thermal energy of slag concurrently with preparation of slag for cement in a powdered form to maximize energy recovery from primary manufacturing process and to minimize energy consumption to transform slag into a slag powder. Preferably the heat removed from the liquid slag as it solidifies is recovered for useful work, such as sustaining the primary manufacturing process or co-located cement production process and/or electric power production preferably through a supercritical CO2 thermodynamic cycle operating through a heat exchanger less transfer of thermal energy from the slag.
摘要:
Die Erfindung betrifft ein Verfahren und eine Anlage zur Herstellung von Zementklinker aus Zementrohmehl, wobei - ein Teil des Zementrohmehls in einem Calcinatorvorwärmer und der andere Teil des Zementrohmehls in einem Ofenvorwärmer vorgewärmt wird, - das vorgewärmte Zementrohmehl in einem nach dem Oxyfuel-Verfahren betriebenen Calcinator vorcalciniert wird, - das vorcalcinierte Zementrohmehl in einem Ofen gebrannt wird, - das gebrannte Zementrohmehl in einem Kühler gekühlt wird, - der Calcinatorvorwärmer mit Calcinatorabgasen des Calcinators und - der Ofenvorwärmer mit Ofenabgasen des Ofens betrieben wird, - wobei als Calcinator ein Flugstromreaktor verwendet wird, wobei ein Teil des Calcinatorabgases nach der Nutzung im Calcinatorvorwärmer zum Calcinator rezirkuliert wird und - das Ofenabgas einer Post-Combustion-CO 2 -Abtrennung unterzogen wird.
摘要:
Methods and systems are provided for producing a carbonate precipitation material comprising stable or reactive vaterite from carbide lime that provides both a source of divalent cations (Ca divalent cations, Mg divalent cations, etc.) and a source of proton removing agent. A method of forming drywall, comprising a) contacting an aqueous solution comprising carbide lime with carbon dioxide from an industrial process; b) producing a precipitation material comprising reactive vaterite; c) setting and hardening the precipitation material by transforming the reactive vaterite to aragonite, and d) forming the drywall.