Highlights. Preparation of calcium carbide slag-activated wet-ground fly ash based eco-friendly geopolymers. The wet grinding process is helpful for the refinement and pre-depolymerization of fly ash. Growth rate of compressive strength of wet-ground FA geopolymer is increased up to 319.5%. Mechanical activation synergizes with alkali ...
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As the industrial waste from blast furnace ironmaking, air-cooled blast furnace slag (ACBFS) puts a lot of pressure on the environment. It is becoming more and more urgent to deal with the increasing ACBFS. In this study, the concept of "full-volume slag alkali-activated mortars (FSAM)" is proposed using ground granulated water-cooled …
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The AAS is composed of granulated blast furnace slag powder and an alkali activator. The slag was obtained from Wuhan iron and steel plant. The BET specific surface area of the adopted slag is 12,643 cm 2 /g; the fine particles (−20 μm) account for 87.13%; the uniformity coefficient ( Cu ) and curvature coefficient ( Cc ) are 5.68 and 0.75 ...
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Steel slag can be applied as a promising carbon fixing material. This paper mainly explored the characterization and carbonation mechanism of steel slag and its products at relatively low CO 2 pressure. The experimental conditions were pure CO 2 gas, 0.02 MPa CO 2 pressure and 24 h carbonation time. The carbonation reaction degree of …
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There have been several successful cases of using gasification slag to prepare activated carbon. Miao et al. prepared high ash FS-based activated carbon through KOH activation at 800 °C. This activated carbon was employed for CO 2 capture. Furthermore, Tian et al. utilized CGFS to prepare activated carbon through KOH …
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for sale. AGICO is professional in offering EPC projects of biomass carbonization plants, carbon activation plants, activated carbon regeneration plants, activated carbon washing equipment, and crushing and screening equipment. Biomass Carbonization Capacity. 8-25 t/d. Carbon Activation Capacity. 2.6-8 t/d. Activated Carbon Regeneration Capacity.
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Chen et al. reported that steel slag absorbed CO 2 equivalent to 12% of its own mass through a 1 h carbonation with 99.9 vol% CO 2, indicating that the utilization of steel slag for CO 2 sequestration as a building material was a feasible approach towards carbon neutralization. At present, the content of steel slag powder used as …
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This study was aimed to study the strength, thermal, microstructural and durability properties of ground blast furnace slag (GBFS) and waste brick powder (WBP) based one-part alkali-activated ...
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Activated carbon activation line: 4 units: Thailand Bangkok Project: 4,000 tons: EPC: 2018: Granular activated carbon regeneration equipment Powder-activated carbon regeneration and activation equipment Powder-activated carbon drying equipment Impurity removal and screening equipment: 6 sets: Yancheng Protec Carbon Co., …
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The coal gasification is the key process of clean usage of coal resource, which inevitably produces a large amount of coal gasification slag (CGS), and causes …
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This can serve as a filling in bulk building materials and coal mines or as a source of activated powder in construction. The maximum concentrate yield of GSP Y is 31.11%, and the maximum combustible …
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The addition of slag has been shown to reduce greenhouse gas emissions from concrete manufacture by more than 95%. Researchers have now discovered that the concrete delivers. "In our tests, we've replaced up to 40% of the cement normally used in concrete," says Senior Researcher Per Anders Eidem at SINTEF Helgeland, located …
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The results showed that the maximum Brunauer–Emmett–Teller surface area and total pore volume with the value of 2481 m 2 g −1 and of 1.711 cc g −1 were …
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To "activate" these carbon sources, first, the coconut shells or coal chunks are heated without oxygen to 1,100-1,650 degrees Fahrenheit until they burn down into a carbon char. This char is then treated chemically, usually with argon and nitrogen, before once again being heated – this time to 1,100-2,200 degrees.
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Blast furnace slag (BFS) produced by Asia Cement Co., Ltd. was used as the experimental material, and the chemical composition determined with X-ray fluorescence (XRF) is shown in Table 1.The particle size distribution of the BFS was measured with a particle size analyzer and is shown in Fig. 1 a, and the median particle …
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The production of alkali-activated materials, in which binders are sourced from industrial by-products and wastes such as slag, fly ash, silica fume, and glass powder, has a much lower carbon emission than Portland cement [2].
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Wet granulation is a potential method to develop artificial aggregates. In this paper, the granulation of recycled alkali-activated slag powders with different particle size (d50 ranging between 12.9–127.7 μm) distributions were investigated in order to find how these affect on the engineering properties of the artificial aggregates. Blast furnace slag …
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In this study, composite blast furnace slag powder (CBFS) was prepared by using RM, FA, DG, and BFS based on the synergistic effect of multiple solid wastes and the theory of medium-calcium systems (Fig. 1).Subsequently, CBFS-cementitious materials (CBFS-PO, that is, 50% CBFS + 50% Portland Cement PO 42.5) were prepared to …
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The high autogenous shrinkage of alkali-activated fly ash/slag (AASF) poses a significant concern for the widespread application of AASF in structural engineering. The present study compares the efficacy of activator and mineral admixtures in mitigating the autogenous shrinkage of AASF, and discusses the underlying mechanism. …
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*Briquette press machine is used to manufacture all kinds of coal powder, coal dust, slime, coking coal, coke powder, aluminum powder, iron powder, iron slag, scale, activated carbon, slag, gypsum, limestone, plastic, kaolin and tailing. *This briquette press machine is widely used in coal, metallurgy, chemical industry and other industries.
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In this paper, the influence of water glass types, the modulus of water glass, the alkali content, the water consumption, and plant fibers on the mechanical strengths of alkali-activated blast furnace slag powder …
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This can serve as a filling in bulk building materials and coal mines or as a source of activated powder in construction. 27 The maximum concentrate yield of GSP Y is 31.11%, and the maximum combustible recovery and separation efficiencies of SNL Y are 84.38 and 78.64%, respectively. The results show that carbon/ash separation in …
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The pressure ball machine can be used to press various powders, powders, waste materials, and waste residues such as coal powder, iron powder, coking coal, aluminum powder, iron filings, iron oxide scale, carbon powder, carbon powder, slag, gypsum, tailings, sludge kaolin, activated carbon, coke, etc.
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The chloride ion migration and corrosion mechanisms are complicated in real marine corrosive environments.This paper focused on a low carbon cementitious composite system of alkali-activated slag-limestone powder (AAS-LS). The chloride transport properties of AAS-LS concrete were evaluated by RCM and real marine …
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Investigating accelerated carbonation for alkali activated slag stabilized sandy soil. Original Paper. Open access. Published: 31 August 2023. Volume 42, pages …
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A commercial ground granulated blast-furnace slag (SG) from China was used as one of the raw materials in this study. The glass powder (GP) was made by crushing the recycled urban waste glass from Knoxville City Recycling Center in Tennessee using a Los Angeles abrasion machine (see Fig. 1).NaOH pellets from Fisher Scientific …
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March 18, 2024. Understanding Powder Activated Carbon: A Comprehensive Guide. Powder activated carbon ( PAC) stands as a pivotal purification agent renowned for its …
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In order to realize the resourceful, large-scale, and high-value utilization of steel slag, which is a bulk industrial solid waste, and to reduce the use of cement-based cementitious materials, this study adopted the coupled excitation effect of sodium carbonate–magnesium oxide–desulfurization gypsum to excite steel slag-based …
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In this study, "alkali-activated slag concrete" (AASC) and "alkali-activated slag–fly-ash concrete" (AASFAC) were developed which was then related with OPC concrete of alike design grade. GGBS and fly-ash were used in the mix, in ratio 100:0, 75:25, 50:50, and 25:75 as the binder ingredient. The modulus of alkaline activator was ...
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The flotation refined carbon was from a gasification slag site in Yulin region (the yield of refined carbon was about 21%). With reference to GB474â€"2008 [20], the refined carbon and coal samples were prepared by reduction, division and grinding to 200 mesh in the laboratory. After vacuum drying at 100 ℃, the samples were stored in ...
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The carbonated ladle slag is capable of taking 5–10% carbon dioxide by mass in 2-h carbonation and is used as fine aggregates in concrete [14]. Although there is no report on carbonated ladle slag as a cementing binder, there are a few demonstrated applications of CO 2 activated steel slag for strength gain.
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For example, after adding microwave absorbing materials such as hot burned steel slag [32], carbon-based material [33], steel wool fiber [34] and activated carbon powder [35] to the asphalt ...
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