The clinker production stage is where the raw material (the raw meal) converts into clinker. ... including sewage sludge ash, water purification sludge ash and steel slag and limestone, as raw components for the production of eco-cement clinkers by burning at 1400 °C for ... In another study by Her et al. [151], eggshell powder was used as an ...
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Generally, steel slag fine powder that is of over 80-mesh standard sieve is taken as the standard, and for this, ... Steel slag cement for roads can be made by the Portland cement clinker, granulated blast furnace slag, and an appropriate amount of gypsum (GB25029-2010).
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DOI: 10.1016/j.conbuildmat.2022.130101 Corpus ID: 255174383; Hydration superposition effect and mechanism of steel slag powder and granulated blast furnace slag powder @article{Zhao2023HydrationSE, title={Hydration superposition effect and mechanism of steel slag powder and granulated blast furnace slag powder}, author={Jihui Zhao and …
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The slag was stirred once using a steel rod during the heating cycle and was tapped out on a 20-mm thick steel plate. The slag samples were slightly oxidized during the mixing and tapping out process.
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Industrial wastes, such as steel slag and desulfurized gypsum, are piled up in large quantities and only a very small portion is recycled, adversely impacting natural ecosystems. Meanwhile, environmental problems caused by CO2 have increasingly received attention. Hence, this study introduces a novel environmentally friendly …
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DOI: 10.1016/J.JCLEPRO.2019.01.260 Corpus ID: 159215700; Process to utilize crushed steel slag in cement industry directly: Multi-phased clinker sintering technology @article{Cao2019ProcessTU, title={Process to utilize crushed steel slag in cement industry directly: Multi-phased clinker sintering technology}, author={Liu Cao …
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P. Humbert, J. Castro-Gomes, and H. Savastano, "Clinker-free CO 2 cured steel slag based binder: optimal conditions and potential applications," Constr. Build. Mater., 210, 413 – 421 (2019). ... of sustainable and green cement-based composite binders with high-volume steel slag powder and ultrafine blast furnace slag powder," …
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Raw material for cement clinker: Fertilizer components (CaO, SiO 2, MgO, and FeO) ... Promoted the self-disintegrated steel by steam, popularized the technology of using steel slag powder; built 10 demonstration projects using steel slag and iron slag for cement and composite powder concrete: Beijing, Tianjin, Hebei, and Surrounding Areas ...
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Both clinkerless and clinker-free AAC were prepared from the mixture of steel slag and blastfurnace slag by using water glass as an activator, and four different recipes which satisfied the strength ... has been focused on the ground steel slag powder as a pre-cursor of AAC. In the review, it is found that the mechanical properties
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For example, it contains a large amount of hydrated inert minerals, such as RO phase and Fe 3 O 4, so the activity of steel slag, especially the early activity, is much lower than that of cement ...
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Laboratory study and industrial production showed that steel slag could be used as iron corrective material to prepare cement clinker.For exploring the mechanism of the effect of steel slag on the performance of cement clinker,based on the comparative laboratory study on the burnability of raw mixes and strength of clinkers which were respectively …
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In order to utilize the original crude granular steel slag environmental-friendlier and avoid extra energy consumption caused by the crushing and screening, we …
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Comparisons of XRD patterns of steel slag and clinker. Download: Download high-res image (87KB) Download: Download full-size image; Fig. 3. ... In addition, as the cost of steel slag powder is lower than that of GBFS, if GBFS is widely substituted for composite powder in cement and concrete, which not only can resolve the shortage …
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The gradation of aggregate and the hydration reaction of cementitious materials are important factors affecting the performance of backfill materials. Steel slag powder (SSP) can be used as both aggregate and cementitious material according to different particle size. SSP has multiple influencing effects on coarse tailings cemented …
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Steel slag changed the clinker mineralogical composition and resulted in the ferrite phase reaching 18.07–28.09%. Laboratory tests showed that the multi-phased clinker with high content of steel slag was technically viable and still obtained exceptional properties. ... The original BOFS powder exhibited weak cementitious properties, and …
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With the rapid development of China's steel industry, rising rates of steel production have led to the increase of steel slag emissions. Steel slag is a kind of industrial solid waste produced in the process of iron and steel smelting, and its emission is about 15 wt%–20 wt% of crude steel output [].According to the data released by the …
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Steel slag is generally regarded as a supplementary cementitious material in cement-based materials, which is conducive to the realization of the goal of carbon peak and carbon neutralization. However, the lower cementitious activity and poorer volume stability of steel slag limit its high dosage in cement-based materials. In this paper, steel slag ultrafine …
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At present, in building materials, there are many researches on the resource utilization of steel slag powder, including steel slag aggregate, steel slag clinker and steel slag admixture. Feng ( Peng et al., 2022 ) et al. think that the use of steel slag as concrete aggregate is an effective and environmentally friendly method for steel slag ...
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Maximal substitution of Portland cement clinker with these materials could have avoided up to 1.3 Gt CO2-eq. emissions (~44% of cement production and ~2.8% of anthropogenic CO2-eq. emissions) in ...
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Semantic Scholar extracted view of "Utilization of steelmaking slag in cement clinker production: A review" by Geun U. Ryu et al. ... Grinding is usually used to increase the specific surface area of steel slag to improve its activity. ... CSS powder with high content of active β-C_2S is a potential … Expand. 2. Save. Heavy metal pollution ...
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The paper studies the effects of slags on the phase formation, microstructure and strength of cements. It compares the clinkers from raw mixes with …
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The steel slag powder is thoroughly mixed with other raw meal powder, while those larger steel slag particles are wrapped in raw meal powder and enter the rotary kiln. ... Moreover, clinker minerals in steel slag produce an effect of seed crystal, reducing the nucleation barrier and promote the formation of clinker minerals like C 3 S and C 2 S ...
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All Issue. Physical Properties of Cement Using Slag as Raw Mix of Clinker슬래그를 클링커 혼합원료로 사용한 시멘트의 물리적 특성. The global cement …
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Alkali-activated cement (AAC) is either clinker-less or free, and it is also environmentally friendly due to its low carbon footprint and wide range sources. Industrial wastes, like steel slag and blastfurnace slag, usually have latent hydraulic reactivity, and can be used as precursors of AAC. Both clinkerless and clinker-free AAC were …
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In order to reveal the self-cementitious property of steel slag, the hydration and hardening characteristics of steel slag powder blended with 5 wt% gypsum were investigated from hydration heat, non-evaporable water (W n) and Ca(OH) 2 contents, hydration products, strength and so on. The results show that the hydration process of …
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Optimal conditions are investigated and discussed for steel slag CO 2 cured binders. • Clinker-free binder can performance a 24 h strength of 151.5 MPa. ... further pulverized at a ball mill consuming respectively 12.5 kW h and 37.5 kW h per ton of coarser and finner steel slag powder. This slag powder was sieved and subjected to a particle ...
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In order to increase the utilization rate of stainless steel slag, reduce storage needs, and mitigate environmental impacts, this study replaces a portion of limestone with varying amounts of stainless steel slag in the calcination of Portland cement clinker. The study primarily examines the influence of stainless steel slag on the phase …
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More than 600 million tons of slag are generated globally every year, leading to multiple environmental issues. Thus, research on applications of slags is crucial. The use of steel slag in cement is limited by its low hydraulic activity and volumetric instability. In the current study, we present a clinker-free steel slag binder (SSB) and discuss the coupled …
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the effect of stainless steel slag ultrafine powder on the properties and microstructure of silicate cement, observing that the addition of ultrafine powder can …
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Steel slag powder has the most obvious effect on the 3 d strength of blended cement. For example, when 20% steel slag powder is added, the 3d strength of …
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Steel slag multi-phased clinker implemented trial production in cement plant for the first time, which provided an effective low carbon strategy for comprehensive utilization of granular steel ...
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This article introduces a commercialised energy-saving cement made by co-grinding OPC clinker with steelmaking slag (steel-slag) and blastfurnace slag that …
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The utilization rate of steel slag in China is far behind that of developed countries. The annual output of steel slag is still increasing, resulting in a large amount of accumulation, causing environmental pollution. This paper summarizes and analyzes the relevant research on steel slag powder (SSP) as a cementitious material, studies the …
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To improve the utilization efficiency of steel slag in cement industry, cement clinkers are prepared by simulated multi-phased clinker sintering technology with …
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Steel slag powder and quartz powder with different particle sizes were prepared using a laboratory ball mill under different grinding times. Then, four types of steel slag powders with median diameter in the range of 10∼15 μm (denoted by R1), 15∼20 μm (denoted by R2), 20∼30 μm (denoted by R3), and 60∼70 μm (denoted by R4) were …
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Steel slag: Clinker: Paste: ... Shen et al. (2020) used carbonated steel slag powder as cementitious material, crushed steel slag as aggregate and phosphogypsum as an additive to prepare pervious concrete. The compressive strength of the prepared pervious concrete reached 9.4 MPa, which had a porosity of more than 20% to ensure …
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Steel slag and blast furnace slag-based clinker-free concrete has very low early strength. This paper focuses on the effect of different curing temperatures on the compressive strength of clinker-free concrete and on optimising the mix proportion by orthogonal tests based on the perspective of prefabricated concrete, and then discusses …
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Feng [33] used the mixture of fly ash, steel slag powder and cement clinker to prepare composite cement and observed that a certain amount of steel slag admixture in cement could reduce the porosity, improve pore distribution and increase the consistency of cement. The observation by Altun, et al. [34] showed that the cement with 30% steel …
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The cement industry significantly contributes to global CO 2 emissions, with a notable portion attributed to limestone calcination during cement clinker production. To promote carbon-neutral building practices, alternative approaches are being explored to replace raw materials in cement manufacturing and mitigate CO 2 emissions. …
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Despite the availability of SCM to mitigate CO 2 emissions from cement manufacturing and combat global warming, the indispensable role of cement clinker persists. Hence, steelmaking slag, enriched with decarbonized minerals, such as CaO, …
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