Semi-Dry Carbonation Process Using Fly Ash from …

In this study, the utilization of the fly ash from a solid refused fuel (SRF) power plant as a solid sorbent material for CO 2 capture via semi-dry carbonation reaction was evaluated as a simple process to reduce CO 2.

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Qixiao Sun's research works | China University of Mining and …

In addition, polished fly ash can significantly improve the strength of fly ash concrete. In fly ash decarbonization technology, Tao [21] conducted a kinetic analysis of charged fly ash particles ...

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Innovation for Decarbonization in the Cement Industry – …

The landfill fly ash processing facility combines ST's novel drying and particle sizing system with ST's long proven electrostatic separation process for removing unburned carbon from fly ash. The drying process consists of a coarse screening process to reject bottom ash, followed by a thermal flash drying process and a particle size ...

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Technique for decarbonizing fly ash with high ignition loss

The decarbonization technology can fully utilize the coal fly ash stacked by a power plant, thus generating substantial economic benefits; the coal fly ash during the operation can achieve...

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Development of Flotation Device for Removing Unburnt Carbon in …

The device floated fly ash containing a large amount of unburned carbon near the water surface through aeration with the air diffuser, and then the floating material ( ash) …

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Accelerated CO2 mineralization technology using fly ash as raw …

CO 2 mineralization stands out as a highly promising approach for carbon capture, utilization, and storage (CCUS) to mitigate global warming. This paper provides a comprehensive review of the current state of accelerated CO 2 mineralization using typical industrial solid …

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Decarbonising cement and concrete production: Strategies, …

The pre-combustion process is similar for coal, oil and natural gas, although additional purification stages are required when using coal or oil to remove impurities such as ash, sulphur compounds and other minor contaminants. The process for pre-combustion capture in power generation is illustrated in Fig. 7 [110].

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Discrete element numerical simulation of fly ash triboelectrostatic

The influence of fly ash electroselective decarbonization in nonlinear electric field is studied. The electric field with nonlinear boundary is designed. The motion separation process of fly ash particles in nonlinear electric field is evaluated by CFD-DEM coupling calculation. The evaluation index of fly ash decarbonization is established. (2)

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Improving flotation decarbonization efficiency of coal gasification …

This work is the first application of mechanically breaking pore to the flotation separation of unburned carbon and ash from coal gasification fly ash and provides valuable …

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Technique for decarbonizing fly ash with high ignition loss

The invention relates to a decarbonization technology of coal fly ash with over-standard loss on ignition, original ash of the coal fly ash is sent to an ash storage tank of a treatment plant by a bulk tank car and sent to an ore pulp pre-processor after the measurement, an automatic dosing machine also adds a dispersant and a compound flotation agent into the ore pulp pre …

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Enhancing flotation removal of unburned carbon from fly ash by …

The alkanes are indispensable as the collector in the fly ash flotation process and synergize with aromatic compounds to improve the mobility of water molecules on the UC surface. The CTB collector significantly enhanced the floatability of the UC particle and hence improved the flotation removal of UC from fly ash. ... The decarbonization of ...

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Carbon removal performance and economic analysis of waste …

Coal fly ash (CFA), as a by-product of burning coal, is produced more than millions of tons per year [1].However, CFA that cannot be rationally utilized and is discarded and piled up not only occupies land, but also negatively affects the surrounding water and soil [2], increasing the potential hazards to human health [3].Resourceful recycling of CFA not only reduces the …

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Experimental study on decarburization of fine fly ash by electric

DOI: 10.1080/19392699.2024.2407602 Corpus ID: 272949717; Experimental study on decarburization of fine fly ash by electric separation @article{You2024ExperimentalSO, title={Experimental study on decarburization of fine fly ash by electric separation}, author={Kaiwen You and Fangyu Ma}, journal={International Journal of Coal Preparation and Utilization}, …

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Effect of decarbonization of high carbon fly ash on workability

The separation process of fly ash particles in the nonlinear electric field is explored through the establishment of geometric model and the application of CFD-DEM coupled calculation method, and ...

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Innovation for Decarbonization in the Cement Industry …

The landfill fly ash processing facility combines ST's novel drying and particle sizing system with ST's long proven electrostatic separation process for removing unburned carbon from fly ash. The drying process consists of a …

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Electrical properties of fly ash and its decarbonization by

The basic principle of fly ash triboelectrification is analysed. The mineral electrical index and test method are introduced. The electric difference of different mineral composition of fly ash is ...

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Discrete element numerical simulation of fly ash triboelectrostatic

The influence of fly ash electroselective decarbonization in nonlinear electric field is studied. The electric field with nonlinear boundary is designed. The motion separation process of fly ash particles in nonlinear electric field is evaluated by CFD-DEM coupling calculation. The evaluation index of fly ash decarbonization is established.

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Improving flotation decarbonization efficiency of coal gasification fly

The high unburned carbon content of solid waste coal gasification fly ash is the main reason that it cannot be used in the construction material industry, which leads to serious waste of resources and environmental pollution.Currently, decarburization flotation has been a dominating method for coal gasification fly ash resource utilization.However, the flotation …

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Method for removing carbon from fly ash

For example, the fly ash decarbonization device disclosed in CN210701178U is to remove carbon for the first time by arranging screening devices at two ends of a filter screen, and then to remove carbon for the second time by a filter box. ... in the wet grinding process, the grinding ball impacts the surface of the fly ash particles to enable ...

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Removal of unburned carbon from fly ash using enhanced gravity

The fly ash products were transported to the bulk bin after dust-collecting and dust-cleaning process in the dust removal system. Then the fly ash samples were collected referring to the method of bulk cement in the GB/T 12573-2008 (Sampling method for cement) [38]. First, ten sampling points were chosen, then about 6 kg fly ash were sampled ...

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Effects of key factors of rotary triboelectrostatic separator on

The general process of fly ash decarbonization through triboelectrostatic separation is as follows. Under the triboelectrostatic action, particles with high surface work function (i.e., carbon particles in pulverized coal ash) undergo friction and collision, becoming negatively charged, while other particles (i.e., ash particles) become positively charged [11].

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Environmentally-friendly emulsion-like collector prepared from …

Since emulsion-like collectors contain surfactants, frother was not needed in the flotation process. The optimum pH for fly ash flotation was 7.0 (Wei et al., 2018), ... Attention has been paid to the floatation decarbonization of emulsion-like collector prepared from waste oil, so as to realize "treating waste with waste". ...

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Effect of decarbonization of high carbon fly ash on workability

In this paper, the flotation decarburization treatment was carried out on high carbon fly ash (HCFA) to obtain flotation decarburized fly ash (FDFA).

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Effects of fly ash properties on carbonation efficiency in CO2

CO 2 mineralisation by fly ash can not only reduce CO 2 emissions, but also increase the stability of fly ash by reducing the alkaline contents through carbonation …

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Preparation and properties of a decarbonized coal gasification slag–fly

To promote the widespread use of fly ash (FA) and coal gasification slag (CGS) in mine filling, reducing the amount of cement and promoting the sustainable development of mining enterprises are essential. In this study, decarbonized CGS (DCGS) was prepared from CGS through decarbonization. A new DCGS-FA filling material was prepared using DCGS, FA, …

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Study of rotary triboelectrostatic separation and decarbonization …

Download Citation | Study of rotary triboelectrostatic separation and decarbonization of fly ash | The principle and separation process of rotary triboelectrostatic separation were discussed based ...

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Effect of decarbonization of high carbon fly ash on workability

fly ash can also prevent the alkali-silicate reaction of concrete, which can increase the density and later-age strength of the interfacial transition zone and reduce carbon emissions [3–9]. Although fly ash has exhibited extensive applica-tion in concrete, the carbon from the combustion process of coal can degrade the quality of fly ash and

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Interfacial nanobubbles on different hydrophobic surfaces and …

Due to the oversaturation of gas solubility in aqueous solution, interfacial nanobubbles (INBs) nucleate and grow on the solid–liquid interface which can be explained by heterogeneous nucleation theory [1].INBs with unique physicochemical properties, like large specific surface area and super long lifetimes, has attracted the attention of researchers in …

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Research on flow field and kinematic characteristics of fly ash

This work evaluated the change of airflow and kinematic characteristics of fly ash particles in the separation process of fly ash using rotary triboelectrostatic separator. ... Effects of key factors of rotary triboelectrostatic separator on efficiency of fly ash decarbonization. Int. J. Min. Sci. Technol., 27 (6) (2017), pp. 642-647. View in ...

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Discrete element numerical simulation of fly ash triboelectrostatic

The separation process of fly ash particles in the nonlinear electric field is explored through the establishment of geometric model and the application of CFD-DEM coupled calculation method, and ...

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