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Iron ore tailings from iron ore mines pose environmental challenges. However, their reuse could provide significant environmental benefits. This study focused on producing clean concrete using iron ore tailings as crushed stone aggregate (IOTA) and calcium carbonate whiskers (CWs) as reinforcement. Five mixture groups were …
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Direct Reduction processes for iron ore employing natural gas or hydrogen are becoming more important. Correspondingly, properties of outgoing products are of importance. Degradation of Direct Reduced Iron (DRI) feedstock greatly influences storage, handling, risk of reoxidation, and following melting operations. The focus of this work has …
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A detailed characterization of the ore becomes impor-tant during ore processing because the rate and standard of the metals produced are afected by …
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Volume content of iron ore tailings (%) Fig. 13: Average impact energy versus volume content of iron ore tailings curves for PP-filled with 150µm, 212µm and 300µm iron ore tailings particle ...
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Reusing of iron ore tailings (IOT), particularly as recycled aggregate to prepare concrete, plays an important role in reducing dependence on natural resources and solving the problem of waste accumulation. In this paper, the effects of IOT as aggregate on the flowability, compressive strength of ultra-high performance geopolymer concrete …
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In order to study the feasibility and sand substitution mechanism of cement mortar mixed with iron ore tailings (IOT), iron ore tailings cement mortars (referred to as IOTC) with IOT content of 0% ...
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Impact of the chemo-mineralogical transformations on mechanical properties of iron ore The chemo-mineralogical reactions described in Section 4.1 correspond to a corrosion of iron ore in a mining environment (presence of H2O and O2) and resulted in its alteration (i.e., chemical weathering). The decrease in material cohesion due to the ...
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Influence of macro-synthetic fiber on the mechanical properties of iron ore tailing concrete. 2023, Construction and Building Materials. Show abstract. Iron ore tailing (IOT) is a hazardous by-product of iron extraction, and its disposal has resulted in serious environmental issues. This paper investigated the interfacial bond performance of ...
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mechanical improvement. Keywords: cement mortar; iron ore tailings; solid waste utilization; mechanical properties; mi-crostructure 1. Introduction The implementation of China's national carbon peaking and carbon neutrality goal has made the clean utilization of secondary resources and metallurgical waste an urgent need.
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The mechanical properties of recycled aggregate concrete with iron tailings and prepared concrete specimens with iron tailings sand content of 0%, 25%, 50%, 75%, and were studied. Mechanical tests are conducted to evaluate the performance with the assistance of PVA fibers.
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The aim of this study to find out some mechanical properties of iron ore in Haji Gak iron ore mine in order to design the optimal blasting parameters during mining …
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DOI: 10.1016/J.IJRMMS.2013.09.005 Corpus ID: 129289809; Impact of chemical weathering on micro/macro-mechanical properties of oolithic iron ore @article{Grgi2013ImpactOC, title={Impact of chemical weathering on micro/macro-mechanical properties of oolithic iron ore}, author={Dragan Grgi{'c} and Albert Giraud …
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Iron ore tailings (IOT) are a type of mining solid waste and cause many environmental and safety problems. The aim of this paper was to investigate the effect of high-volume ultra-fine IOT on the mechanical properties and hydration mechanism of cementitious materials.
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DOI: 10.1016/j.jobe.2023.107882 Corpus ID: 263677989; Enhancement mechanism of micro-iron ore tailings on mechanical properties and hydration characteristics of cement-steel slag system
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1. Introduction. Iron ore is the primary raw material for iron production in the global steel industry. It is derived from iron-beading minerals, which are mostly iron silicates, and its value is dependent of its location, composition, and quantity, and the available technology.
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Activation of hydration properties of iron ore tailings and their application as supplementary cementitious materials in cement. Powder Technol., 360 ... Y.Z. Xu, Preparation and mechanical properties of high volume iron tailings sand concrete, Shenyang University of Technology, 2019. Google Scholar [62]
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Recently, the potential of IOTs as substitutes for aggregates in concrete has been intensively investigated. For example, Zhao et al., [1] conducted detailed research on IOTs as fine aggregates in ultra-high performance concrete (UHPC) and found that the mechanical properties of IOT-based UHPC mixes were equivalent to that of the control …
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Request PDF | Mechanical properties of sintered ceramsite from iron ore tailings affected by two-region structure | As industrial waste, iron ore tailings (IOTs) can be mixed with bentonite and ...
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Mechanical properties and enhancement mechanism of iron ore tailings as aggregate for manufacturing ultra-high performance geopolymer concrete. ... Iron ore tailings (IOT), as one of the main mining wastes, is produced after multiple crushing and …
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The world reserves of iron ore are around 170 billion tons. More than 2.4 billion tons of iron ore were processed in 2019, in which 36.7% correspond to the world's largest producer, Australia ...
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in the ore, the self-bonding properties of the ore ensured the complete elimination of bentonite in the pelletization of iron ore fines [12]. They have also found that the fluxed pellets' physical and metallurgical properties (Cold Crushing Strength, Reducibility Index, Reduction Degra-dation Index, porosity, and Swelling Index) are enhanced.
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Abstract. This work aims to evaluate the influence of the incorporation of iron ore tailings (IOTs) on the mechanical, thermal, and morphological properties of …
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Abstract. This chapter presents the mineralogical, chemical compositional, and physical characteristics of the main types of iron ore deposits mined from around …
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This work aims to evaluate the influence of the incorporation of iron ore tailings (IOTs) on the mechanical, thermal, and morphological properties of polypropylene, IOT, and maleic anhydride grafted polypropylene (MAPP) composites.IOTs come in the form of coarse particulates (sand) and fine particulates (iron sludge). Composites were …
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1. Introduction. Iron ore tailings (IOTs) was the residual solid waste that remained after the extraction of iron from iron ore [1, 2], which was typically deposited in tailings ponds.Leakage or spillage from the tailings pond can result in the release of harmful substances into the surrounding soil, groundwater, and rivers, causing contamination of …
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Thereby, the exploration of the mechanical properties and durability indicators of cementitious composites with high additions of IOT will contribute to know the effects of the residue in this application. ... Experimental study on the properties of concrete mixed with iron ore tailings. Adv Mater Sci Eng (2016), p. 8606505, …
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Correspondingly, properties of outgoing products are of importance. Degradation of Direct Reduced Iron (DRI) feedstock greatly influences storage, handling, risk of reoxidation, and following melting operations. The focus of this work has been on the physical properties of DRI, and their effect on mechanical properties.
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3.1 Characterization of the Tailings. The basic geotechnical properties of the two tailings are summarized in Table 1 and Fig. 1 displays the grain size distributions. The specific gravity of five samples for each tailing were measured and the average specific gravity of coarse and fine iron tailings are 3.127 and 3.183 respectively, which are much …
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Iron ore tailings are a byproduct of the mining and processing of iron ore, and their potential use as a replacement resource is the emphasis of this study. ... (2023) Mechanical properties high temperature resistance and microstructure of eco-friendly ultra-high performance geopolymer concrete: role of ceramic waste addition. Constr …
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DOI: 10.1016/j.conbuildmat.2023.130293 Corpus ID: 255743499; Influence of macro-synthetic fiber on the mechanical properties of iron ore tailing concrete @article{Zhao2023InfluenceOM, title={Influence of macro-synthetic fiber on the mechanical properties of iron ore tailing concrete}, author={Jiangshan Zhao and Qingxuan Wang …
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