The Proportion Of Water Quenched Slag Is Generally Much
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- The Proportion Of Water Quenched Slag Is Generally Much
As shown in Fig. 9, when the slag flow rate is large (1.02 × 10 –4 m 3 /s), the proportion of large slag particles is higher (the proportion of 5–8 mm slag particles is 57%), and the proportion of 0–1 mm slag particles is only 5%. As the molten slag flow rate decreases, the proportion of large particles decreases gradually, and the ...
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This study assessed the effects of incorporating different contents (0–100 vol %) of water quenched silicomanganese slag (WQSMS) fine aggregate on the …
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Therefore, water quenching is generally not used for complex shapes or blind holes. These geometrical obstructions result in a non-uniform heat transfer around the surface of the part due to a …
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A steelmaking waste, water-quenched slag (WQS), was employed as an alternative to river sand fabricating the AAC. ... The average normalized bond strength of plain GPC mixes was generally lower ...
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Request PDF | On Jul 1, 2016, Lei Deng and others published A Study on Water-quenching Waste Heat Recovery from Molten Slag of Slag-tap Boilers | Find, read and cite all the research you need on ...
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In comparison, the water-quenched Ni slag was mainly amorphous (> 95%). The crushed water-quenched Ni slag grains are dark green and appear glossy (Fig. 11.10) (Yang et al., 2017). The dissolution behaviors of Ni slags in an alkaline environment showed that the Si and Al components in the glassy phases were the main reactive parts.
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It is generally believed that water-quenched slag is a potentially active vitreous structure. This vitreous body contains a high crystallinity energy, but the hydration speed in pure water is very high. Add water slowly, because the water-quenched slag will form a dense and indeterminate acidic film on the particle surface after contact with ...
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During water quenching process, high-pressure water is employed to shatter the molten slag. However, the water quenching methods not only fail to recover the high-temperature waste heat but also consume a huge amount of fresh water by the evaporation of 1000–1500 l of water per ton of slag [13].
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According to methods for cooling molten steel slag, steel slag is classified into five types: natural air-cooling steel slag, water-spray steel slag, water-quenching steel slag, air-quenching steel slag, and shallow box chilling steel slag [47,48]. Most steel slag contains a high content of Fe 1-σ O and other metal oxides.
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The performance of blast furnace slag treated by wind quenching is significantly better than that of water quenching slag, and the heat recovery rate is …
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quenching and water-cooling to deal with steel slag and realized industrial production [13], through which the uti-lization rate of steel slag has been improved significantly. In addition, due to the advantages of high sphericity and good stability, air-quenched steel slag has been applied to abrasive [14] and concrete fine aggregate [15 ...
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The fitting results of Raman spectra for glass slags obtained by quenching in water and on stainless steel plate are displayed in Fig. 2b and c, respectively. It can be seen from Fig. 2b and c that there were five symmetric bands for the two glasses, ~ 745, ~ 795, ~ 855, ~ 910, and ~ 1035 cm −1.Among them, the band at ~ 745 cm −1 and at ~ …
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Water quenched slag (WQS) as fine aggregate in alkali-activated material (AAM). Bar-shaped vitreous grains in WQS affect macro and micro properties of AAM. …
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When subjected to water quenching, the molten copper slag discharged from the smelters forms amorphous granulated slag. The granulated copper slag generally consists of fine-grained regular and angular-shaped particles, with the particle size varying between 4.75 mm and 0.075 mm [37]. The porosity of granulated slags allows them to …
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Blast furnace slag is a by-product of the iron-making process while producing pig iron. The present research provides an understanding of the two different types of slags of water quenched granulated slag and air-cooled slag that are generated from iron making process through the blast furnace route.
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Water-quenched slag is glassy, which, if containing coarse particles of more than 10mm, is fragile, and is inferior in water-absorption, friction loss and stability. It does not meet the …
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The results demonstrate that the addition of sludge increases the grindability of water-quenched slag, with a specific surface area increasing from 971m²/kg to 1125m²/kg, and a glass phase ...
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There are two ways of cooling copper slag: slow cooling and water quenching. Different cooling speed will determine the particle size and mineral composition of copper minerals in copper slag. Studies have shown that the slow cooling of copper slag above the phase transition temperature of 1080 is beneficial to the aggregation and …
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To carry out the hydration process, it is difficult to get water and air into the slag's deepest layer because of a hard, thin layer covering the slag surface. Since the steel slag is filled with so much f-CaO, it is unsafe for use in road or civil engineering projects (Juckes, 2003; Shi, 2004). In order to convert it into material that can be ...
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bands of ~ 350 cm −1 and ~ 550 cm −1 generally represented the bending vibrations of Si–O–Si and Al–O–Al, respec-tively [ 2, 6 21 22]. It can be observed from Fig. a that ... image of water-quenched slag. The diraction pattern of the water-quenched slag shown in Fig. 3c presented the very dispersed diraction ring characteristic of ...
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2.4 Preparation and characterization of air-quenched granulated steel slag. In the experiment of air-quenching granulation of steel slag, the following essential parameters are fixed: the temperature of slag is 1600 °C; the nozzle is Laval nozzle (the Mach number is 1.4); the air-quenching pressure is 0.3 MPa; the slag flow rate is 12.5 …
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Two different slag samples (Slag-A and Slag-B) were considered from the water quenched GBF slags, and the other two were ACBF (Slag-C and Slag-D) which was a slow cooling by nature. In case of GBF, water was quenched/sprayed over the hot molten slag on the high speed rotating disk and takes minimum time to gain the room …
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The liquid slag is cooled and solidified by rapid water quenching to form a glassy state material with minimum probability of crystallisation. This rapid water …
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Minerals 2023, 13, 174 2 of 13 Compared with fly ash, copper slag contains a small amount of Al [4,11], which plays an important role in improving the pozzolanic reactivity of copper slag.
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1. Introduction. High-titanium slag is a kind of granular or massive waste slag that is produced by the quenching or natural cooling of molten slag discharged from the pig iron obtained via smelting vanadium titanium magnetite [].Hydraulicity refers to the property that a material can be hardened in humid air and water to form a stable …
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Generally, water-cooled slag contains a high glass phase proportion, due to the rapid cooling achieved by water-cooling processes, and its activity is higher than …
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The particle size distribution indicates higher percentage of 5∼2.5mm particles and lower percentage of 1mm and smaller particles. This water-quenched slag can be crushed, and its particle distribution can be adjusted to satisfy the specification for fine aggregate.
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Two pilot-scale vertical flow constructed wetlands (VFCW) were designed, with one system containing water quenched slag (WQS) from a steel plant as a substrate and the other one as a control ...
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A slag-based geopolymer was investigated using the mixture of three different slags (Lintz–Donawitz converter slag: ladle slag: blast furnace slag of 1:1:2 w/w ratio) [26]. The slag mixture was treated at room temperature with an alkaline solution (Na 2 SiO 3 : NaOH of 1:1 wt ratio) for 72 h.
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In this paper, S95 grade ultrafine mineral admixture was prepared by water quenched manganese slag and fly ash 1:1 compound mechanical ball milling to a specific surface area of 714 m2/kg.
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The reconstituted water-quenched blast furnace slag still has good activity, and it will not affect the further use of the slag after pyrolysis (BFS-P). Blast furnace slag, which is the main by-product of the ironmaking process discharged at 1450 °C, contains high-quality sensible heat, while oily sludge is the main solid waste produced in the ...
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