slag properties and grinding

Steel slag is a byproduct of the steelmaking and steel refining processes. This paper provides an overview of the different types of steel slag that are generated from basic-oxygen-furnace (BOF) steelmaking, electric-arc-furnace (EAF) steelmaking, and ladle-furnace steel refining processes. The mineralogical and morphological properties of …

Fig. 1, Fig. 2 show the influence of steel slag on properties of concrete at the W/B of 0.50 and 0.35, respectively. It is evident that the compressive strength of concrete is lower at higher steel slag replacement. This is consistent with the results of Sun [12] and Wang et al. [13].The early strength of concrete is more sensitive to steel slag …

Slag Grinding. Steel manufacturing produces steel slag as a by-product; this material has cementitious properties due to its highly reactive minerals (calcium silicates and calcium aluminoferrite) to produce slag cement which by partially replacing Portland cement results in reducing greenhouse gas emissions by 70%. The slag grinding is done ...

The grinding efficiency of steel slag was obviously increased and the particle characteristics were improved after using grinding aids (GA), especially the particle proportions of 3-32 Mm were ...

The chemical composition, mineralogy, and morphology of steel slag particles can influence both the cementitious characteristics and mechanical …

The particles of wet-grinding steel slag tend to be more spherical with long grinding time. • The activity of C3A in steel slag is significantly improved after grinding. …

In this study, the fresh state and hydration properties of 0–60% lithium slag blended cement pastes were investigated at water-binder ratio of 0.47. The workability of the fresh pastes was evaluated by measuring the air content, marsh cone flow, mini-slump flow, setting times, and through rheology tests. A 40% lithium slag cement could produce …

The milled slag samples were characterized by isolated angular slag particles. The variation in median size (X 50) and Zeta potential of the slag milled for different time up to 60 min is given in Fig. 1.A sharp decrease in the median size (X 50) from 85.3 to 14.2 μm is observed during initial stage of milling up to about 5 min.The sharp …

Gas-quenched steel slag abrasive was obtained by gas quenching with high-temperature liquid steel slag as raw material. The phase composition, thermal properties, micromorphology, magnetic ...

This work aims at evaluating the effect of wet grinding on the properties of blast furnace slag (BFS) and the properties of BFS-cement mixtures. Different grinding time are considered from 10 min to 50 min at intervals of 10 min. The morphology and structure properties of ground BFS and the physical properties of BFS slurries as the …

DOI: 10.1016/j.jclepro.2019.119528 Corpus ID: 214117536; Preparation for micro-lithium slag via wet grinding and its application as accelerator in Portland cement @article{Tan2020PreparationFM, title={Preparation for micro-lithium slag via wet grinding and its application as accelerator in Portland cement}, author={Hongbo Tan and Li …

Although the incorporation of ground slag could effectively improve the geopolymeric properties, the activity of fly ash itself was not effectively stimulated and utilized at this time. The grinding of the fly ash to improve its activity is an effective way to prepare fly ash geopolymers with excellent mechanical properties at room temperature ...

Since the wet-grinding slag contains a lot of water, the water demand when mixing the paste needs to be recalculated according to Eq. ... Material properties of steel slag-cement binding materials prepared by precarbonated steel slag. J. Mater. Civ. Eng., 30 (2018), Article 04018208, 10.1061/(ASCE)MT.1943-5533.0002370. View in Scopus …

Steel slag is the main solid waste during steel production [1 ]. This slag is formed by the oxidation of impurities, such as metals, fluxes, and furnace linings, in the raw materials. …

Because of the high hardness and poor wear resistance of steel slag, the potential cementing property of steel slag can not be effectively exerted, and the utilization rate of steel slag. Is low. In order to improve the performance and grinding efficiency of steel slag powder, different grinding aids were added in the process of steel slag …

1. Introduction. Steel slag (SS) is a by-product of the steel-making process, and about 150 kg of SS is produced during the manufacture of 1 t of steel [1, 2].In contrast to developed countries, the utilization rate of SS in China is only about 10% [3].Steel slag can be disposed in road construction, cement production and other fields, but due to the poor …

The grinding efficiency of steel slag was obviously increased and the particle characteristics were improved after using grinding aids (GA), especially the particle proportions of 3–32 μm were obviously increased by 7.24%, 7.22%, and 10.63% …

The main components of steel slag (SS) is shown in Table 1. Mason B [47] proposed that the basicity value calculated from the chemical composition of steel slag M. Property of WSS-GS slurry. The pH and electrical conductivity tests could be used to evaluate the change of liquid alkalinity and the dissolution of slurry respectively [50].

Results show that the gas-quenched steel slag abrasive is a monodisperse regular sphere. The compressive strength of a single particle is 34 N. The product is …

The wet-grinding steel slag CO 2 emission and cost showed a downward trend compared with cement. Introduction. ... [12]. More hydration products could be …

slag (GBS) and pozzolans. However, these materials present high levels of moisture and abrasiveness, requiring grinding systems designed to deal with these properties. …

To improve the pozzolanic reactivity, waste glass (WG) needs to be micronized to fine particles so as to expedite the leaching of active constituent. The key feature of this work is to examine the effect of wet-grinded WG on the mechanical and structural properties of cement based materials. The experimental results show that wet …

Physical properties are important to slag processing, especially in the crushing or grinding processes. We investigated some properties of steel slags and compared them with the properties of natural aggregates studied by Geiseler (1996) and the FEhS-Building Materials Institute (Drissen et al., 2009); these comparisons are …

The MFPB was composed of MMSC, FA, AS, and ordinary urban tap water in certain proportions. Shishan Ruan et al. [35], [41] developed an MMSC material using mine backfilling, and studied the mechanical properties of MFPB. The results show that the combination of 65–90% modified magnesium slag, 2.5–7.5% flue gas desulphurization …

the remainder of sales. Slag was processed by 25 companies servicing active iron and steel facilities or reprocessing old slag piles at about 123 processing plants (including some iron and steel plants with more than one slag-processing facility) in 33 States, including facilities that import and grind unground slag to sell as ground granulated

The wet-grinding specimens presented a higher hydration heat than that of raw steel slag specimens, and the microstructure of 3 μm-40% (3 μm steel slag mixed with cement as a dosage of 40%) is ...

Magnetic reseparation of steel slag results in improved grinding with the material exhibiting grindability intermediate between that of steel slag and OPC clinker after the same time of grinding. 13.4.1 Stability and other properties of slag blended cement13.4.1.1 Stability. SSBC paste specimens were inspected when cured.

DOI: 10.1016/J.CONBUILDMAT.2011.10.064 Corpus ID: 135517384; Enhance hydration properties of steel slag using grinding aids by mechanochemical effect @article{Zhu2012EnhanceHP, title={Enhance hydration properties of steel slag using grinding aids by mechanochemical effect}, author={Xi Zhu and Haobo Hou and Xuquan …

The grinding efficiency of steel slag was obviously increased and the particle characteristics were improved after using grinding aids (GA), especially the particle proportions of 3-32 Mm were ...

Therefore, systematic studies of the physical properties of slag with high aluminum content were carried out in the present work, and the influence of CaF2, CaO, MgO, SiO2, and Na3AlF6 on ...

and abrasiveness, requiring grinding systems designed to deal with these properties. Therefore, it is important to evaluate which grinding system best serves the purpose. GBS is a byproduct of steel manufacturing, mostly consisting of CaO, SiO 2, Al 2 O 3 and MgO, with CaO and SiO 2 composing the largest share. Lesser components like Fe 2 O 3 ...

Thus, the application of wet-grinding steel slag in cement may solve the problem. It is suggested that cement should be replaced by 30% 3 μm wet grinding …

The present paper probes into the influence of the steel slag particle size on the mechanical properties and microstructure of concrete, with steel slag serving as the primary raw material. Steel slag with different particle sizes was selected as the partial substitute material for concrete by mechanical grinding. The influence of steel slag on …

The wet-grinding steel slag CO 2 emission and cost showed a downward trend compared with cement. Introduction. ... [12]. More hydration products could be produced by superfine steel slag, but the cement properties are still impeded when the content of steel slag is>10%, setting time and water demand also show an uptrend by …

Influence of steel slag on the properties of alkali-activated fly ash and blast-furnace slag based fiber reinforced composites. Cement. Concrete. ... Effect of wet-grinding steel slag on the properties of Portland cement: An activated method and rheology analysis. Constr. Build. Mater., 286 (2021), 10.1016/j.conbuildmat.2021.122823.

To improve the properties of grinding and cutting wheels, copper slag filler (0.043 kg of particle size<150 μm) was added to a mixture of an abrasive powder (0.868 kg), powder novolak resin (0.147 kg), a liquid phenol formaldehyde resin (0.037 kg) and iron red pigment (0.013 kg) and this was compacted and hardened for 16 h at <180 °C. The ...

The hard-to-grind minerals in steel slag are native-iron, magnesium ferrite and calcium ferrite, accounting for 22.38%, which are harder than other …