##tihuan2##Due to its high strength and relatively small particle size after crushing, steel slag can also be used as concrete aggregate [6]. The main limiting factors for the extensive use of steel slag as cementitious materials and aggregates are its poor volume stability [7], [8], ... reducing energy consumption, while achieving high Ca conversion ...
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##tihuan2##The steel slag crushing experiment was carried out for studying the roller gap, roll force and grinding speed on crushing effect and material layer stability, in order to determine the reasonable ...
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##tihuan2##Besides control of arc length and, occasionally, of analysis of power harmonics [23], frequent slag sampling and analysis has been implemented as an efficient process monitoring tool in order to ...
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##tihuan2##EOF steel slag has a greater crushing value because it is more resistant to crushing under progressively applied compressive stress. IS: 2386 [ 32 ] states that EOF steel slag may be utilized in concrete pavement wear surfaces and other concrete constructions because of its strong crushing strength of above 30%.
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##tihuan2##The slag used in this study is the slag manufactured at the El Hadjar plant (Annaba-Algeria) and varies with the nature of the iron ore used and the quality of the cast iron produced. This slag was supplied in granules and milled in Los Angeles apparatus, and then sieved in a 0.1 mm sieve to obtain particles smaller than 0.1 mm.
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##tihuan2##• Current limits : • Assumptions concerning the equivalence with a Portland traditional cement (to be confirmed) • Assumptions concerning the energy consumption of the mineralization process • Other conditions to ensure environmental performances : • still uncertainties for electricity consumption: define the upper limit of energy
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##tihuan2##The aim of this study is to evaluate the effect that the size of grinding media exerts on ferronickel slag milling efficiency and energy savings. A series of tests were performed in a laboratory ball mill using (i) three loads of single size media, i.e., 40, 25.4, and 12.7 mm and (ii) a mixed load of balls with varying sizes. In order to simulate the …
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##tihuan2##Abstract. This research intends to investigate the economic, energy and environmental aspects of mortar and concrete manufactured with ferronickel slag (FNS) as a substitute …
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##tihuan2##The BF slag is discharged at a temperature of 1450–1550 °C and thus, the total energy carried by BF slag amounts to 11 million tonnes standard coal (approximate 1770 MJ of energy per tonne BF slag), corresponding to 13.0% of consumption in the blast furnace process.
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##tihuan2##Fine grinding, to P80 sizes as low as 7 μm, is becoming increasingly important as mines treat ores with smaller liberation sizes. This grinding is typically done using stirred mills such as the Isamill or Stirred Media Detritor. While fine grinding consumes less energy than primary grinding, it can still account for a substantial part of …
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##tihuan2##As highlighted by the previous researchers, crushing potential of the material is a function of multiple parameters which mainly include grain morphology, mineralogy, gradation, relative density, and applied load intensity [8].Along with these variables, the degree of saturation, loading duration and its repetition, breakage energy, and confining …
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##tihuan2##This paper summarized the comprehensive utilization status of steel slag in building materials, agriculture, wastewater treatment, marine engineering, ceramics, and …
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##tihuan2##In addition, many studies (Maweja et al., 2009; Starodub et al., 2016; Heo et al., 2013) have also confirmed the superiority of the smelting reduction process for recycling the copper slag, characterised by a compact process flow route, high recycling efficiency, and low pollution, while the drawback of high energy consumption and small ...
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##tihuan2##The grinding energy consumption of steel slag is 36.7 kWh/ton, and the laboratory accelerated carbonation cost of steel slag powder is 42.1 $/ton [144]. …
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##tihuan2##As one of the largest energy and resource consumption industries, the iron and steel industry (ISI) alone contributed approximately 7 % to global carbon emissions (Zhang …
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##tihuan2##Implementation of a slag ing practice gave very encouraging results in the main process variables; energy consumption decreased from 730 to 640kWh/t of steel while electrode consumption ...
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##tihuan2##How to reduce the energy consumption of the rotary kiln-electric furnace (RKEF) process has become an important issue for the stainless steel industry. The aim of this study is to reduce the energy consumption of ferronickel production from saprolite nickel laterite in the RKEF process. The effects of the slag binary basicity, FeO content, …
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##tihuan2##Minerals 2022, 12, 184 2 of 17 the mining and minerals industry is 4–7% of the global energy output [13]. For a typical grinding circuit, the average energy consumption can be as high as 6700 ...
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##tihuan2##Steel slag is a solid waste produced in crude steel smelting, and a typical management option is stockpiling in slag disposal yards. Over the years, the massive production of steel slags and the continuous use …
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##tihuan2##For instance, the decreases in the expansion rate were 66.08% (S1), 82.21% (S2), 87.63% (S3), and 90.10% (S4) as compared with the uncarbonated, respectively, implying that the extension of the ...
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##tihuan2##The results obtained were compared with the limits of the United States Environmental Protection Agency (USEPA) and DIN 38,414-S4, respectively and it was …
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##tihuan2##This research intends to investigate the economic, energy and environmental aspects of mortar and concrete manufactured with ferronickel slag (FNS) …
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##tihuan2##Energy consumption and energy saving for mortar with FNS 1. Figure 6. Energy consumption and energy saving for mortar with FNS 2. Figure 7. Energy consumption and energy saving for concrete with ...
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##tihuan2##Over the last few decades, the demand for energy-efficient mineral-processing methods has continued. The necessity to develop energy-efficient technologies for the mineral industry will increase in the future, considering the exhaustion of high-quality resources and severe environmental limitations. The subject of this study is crushing …
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##tihuan2##The TYNA method also solves the problem that water quenching slag is easy to explode, compared with the INBA method, the circulating water consumption is less, …
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##tihuan2##The energy obtained by subtracting E ic from E i 1 is the energy required to form microcracks at initial loading; hereafter, it is referred to as E crac (1). Most of the E ic is thought to be the energy consumed through friction loss between solids or between a solid and a liquid. This friction loss energy is referred to as E fric.
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##tihuan2##Steel slag has low bearing capacity due to the lack of fine particles (< 4.75 mm) and gradation should be regulated by crushing to increase the bearing capacity and workability 37. A denser ...
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##tihuan2##the ORC can limit the demand for primary energy to a cer-tain extent as well as ensure high safety, flexibility, and reli - ability [8–10]. Ahmadi et al. [11] studied the feasibility ... The steel slag after crushing and cool-ing is transported back to the pressure equipment in the hot and stuy area, and water drawing operation after sealing
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##tihuan2##Slag for use in Concrete and Mortars", though this has now been superceded by ASTM C 989 – C 989M-1613 which is the "Standard Specification for Slag Cement for use in Concrete and Mortars". The ASTM Standard12 describes three grades of GGBFS – Grades 80, 100 and 120. This grading relates to the
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