Mechanical properties of sintered ceramsite from iron ore …
A number of physical properties of the ceramsites are determined; these include the cylinder compressive strength, structure, morphology, and iron distribution for different …
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Mechanical properties and enhancement mechanism of iron …
In this paper, the effects of IOT as aggregate on the flowability, compressive strength of ultra-high performance geopolymer concrete (UHPGC) were studied, and the enhancement mechanism of IOT on compressive strength was elucidated through microscopic …
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Analysis of the Granulometric Composition of the Feedstock …
The paper investigates the effect of high-temperature roasting and cooling modes of roasted iron ore pellets on their strength and porosity. These characteristics depend on the initial iron ore ...
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Factors influencing physical and mechanical properties of …
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 been on the physical …
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Mechanical properties of dust collected by dust separators in iron ore …
Request PDF | Mechanical properties of dust collected by dust separators in iron ore sinter plants | The flow-related mechanical properties of dusts from the de-dusting systems of several sinter ...
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Effect of molasses binder on the physical and mechanical properties of
Molasses was used as an alternative binder to the bentonite binder. The change in moisture absorption by pellets prepared with different iron ores and different molasses contents were investigated. Iron ore properties exerted the major effect on pellet behavior and final pellet quality. The absorbed moisture content of pellets prepared without binder, bentonite-added …
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Development of eco-efficiency concrete containing diatomite and iron
Influence of macro-synthetic fiber on the mechanical properties of iron ore tailing concrete. 2023, Construction and Building Materials. Citation Excerpt : It indicated that the compressive strength of concrete without fibers decreased with the increase in the IOT replacement ratio. Similar results were also reported in previous studies [8,11 ...
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Effect of Blaine Number on the Physical and Mechanical Properties …
In this work, a comparative study has been done to determine the effect of three different compositions of binders (bentonite and limestone (BLS), limestone and lime (LSL), and cement) and Blaine number on the properties of pellets prepared using the slime generated from the washing of Indian-origin iron ore. The compressive strength (C.S.) value of pellets made …
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Mechanical properties and pore structure of recycled aggregate concrete
The initial microcracks of the recycled aggregate concrete (RAC) usually first appear in the interfacial transition zone (ITZ) during the destructive process. Thus, the performance of ITZ plays an important role in the mechanical properties of concrete [7,8]. In order to improve the mechanical performance, we add iron ore tailings (IOTs) to RAC.
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Influence of macro-synthetic fiber on the mechanical properties of iron
Influence of macro-synthetic fiber on the mechanical properties of iron ore tailing concrete. Author links open overlay panel Jiangshan Zhao a, Qingxuan Wang b c, Guoqiang Xu a, Yunxing Shi c, Youpo Su a. Show more. Add to Mendeley. ... Iron ore tailing (IOT) is a hazardous by-product of iron extraction, and its disposal has resulted in serious ...
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Study on Compressive Properties and Dynamic …
Zeng [ 11] and Bastosh [ 12] et al. investigated the mechanical properties of iron-ore tailing and found that iron-ore tailing can be used as subgrade road filler after chemical …
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Characterisation of the Physical and Metallurgical Properties …
In selecting iron ore for iron and steel industries, some of the properties which need to be considered include (i) tumbler, abrasion and shatter indices, (ii) porosity, (iii) chemical …
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Development of eco-efficiency concrete containing diatomite and iron
The mechanical properties of concrete with a tailing content of less than 50% are enhanced or comparable to those of the control specimen, as shown in Fig. 5, Fig. 6, Fig. 7. However, beyond a IOTs replacement ratio of 50%, the mechanical properties of the modified concretes are lower than those of the control specimen and show a decreasing trend.
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Study on mechanical properties of macro‐synthetic fiber‐reinforced iron
Iron tailings have been extensively studied as mineral admixtures and as coarse and fine aggregates. However, few studies have been conducted on the mechanical properties of iron tailings concrete ...
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An evaluation of iron ore tailings characteristics and iron ore
Particularly, iron ore tailings (IOT) as ordinary industrial solid waste in China is discharged and deposited. This review is a recapitulation of the material characteristics of IOT and its effects on the workability, mechanical properties, and durability of concrete.
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Characterisation of the Physical and Metallurgical Properties …
For estimation of a Shatter Index, a dried lump iron ore sample (10 kg) of size −40 + 10 mm was dropped 4 times from a height of 2 m onto a cast iron floor (0.5 × 0.5 × 0.03 m). Thereafter, the iron ore was screened and the shatter index expressed as the wt% passing through a 5 mm sized screen (i.e., −5 mm fraction).
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Mechanical Properties and Microstructure Analysis of …
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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Influence of Integration of Iron Ore Tailings on the Physio-mechanical …
Abstract. The goal of this experimental study is to produce fly ash (FA)-based coarse aggregates by adding iron ore tailings (IOT) to the FA-based precursor as an additional mix component. The involvement of different types of binders—influential factors of both pelletization and geopolymerization that govern the production of FA-based coarse …
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Influence of iron ore tailings by-product on the mechanical …
The addition of iron ore tailing can improve the mechanical properties and conductivity. ... Nine mixtures were produced. The effects of CF and IOTs content on mechanical properties and electrical conductivity were investigated; Based on the digital image correlation (DIC) system, the stress sensing ability of the specimen was evaluated and the ...
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Influence of a carboxymethyl cellulose (CMC) …
Mechanical properties. The mechanical properties are important when considering handling of the iron ore pellets, when the pellets are indurated or loaded into the DRI unit or blast furnace. The important mechanical properties …
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Impact of chemical weathering on micro/macro-mechanical properties …
These microscopic transformations result in a significant decrease in the micro/macro-mechanical properties of iron ore (micro-indentation tests at millimetric scale, micro-compression triaxial tests at centimetric scale and macro-compression triaxial tests at decimetric scale). Multi-scale mechanical tests were performed in order to ...
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A Feasibility Study on the Mechanical Properties of Concrete with Iron
Iron Ore Tailings (IOT) are the waste slag resulted from iron ore mines. Large amount of Iron Ore Tailings (IOT) have been generating every year posing serious environmental problems, large production of cement everyday resulting the emission of CO2 and increase in the consumption of river sand for construction activities making the river beds over-exploited. These reasons …
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Studies on Physical and Mechanical Properties of …
The laboratory analysis reveals for physical properties of collected ore samples, maximum value of specific gravity 4.5, water absorption 2.10%, volume gravity 5.69gr/m3, and porosity 6.54% and...
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Three-dimensional structure and micro-mechanical …
A new analysis method based on serial sectioning and three-dimensional (3D) reconstruction was developed to characterize the mineral microstructure of iron ore sinter.
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Effect of Extrusion on the Physical and Mechanical Properties …
Quantitative and qualitative metallography has been applied within the extruded product to match with the values of the mechanical properties. The product achieves maximum density of 7.55 gm/cc after extrusion with 240 MPa extrusion pressure at 1200 °C. ... Simultaneously iron ore fines in the fraction are also produced during mining, crushing ...
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Mechanical properties of dust collected by dust separators in iron ore
The flow-related mechanical properties of dusts from the de-dusting systems of several sinter plants were investigated. The mass median diameters of the dusts were in the range from approximately 3 to 100 µm. Also, the bulk density of the dusts varied in a wide range (approximately 400 to 2300 kg/m³ …
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Mechanical properties and hydration mechanism of high …
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 …
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Study of mechanical, durability and microstructural properties …
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, 10.1155/2016/8606505.
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Mechanochemical activation of iron ore tailing-based …
Single addition of IOTs as SCMs may worsen the mechanical properties of the concrete owing to the low reactivity of IOTs [12]. Therefore, the multi-SCM system including fly ash ... Activation of hydration properties of iron ore tailings and their application as supplementary cementitious materials in cement. Powder Technol., 360 (2020), pp. 863 ...
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Mechanical properties of sintered ceramsite from iron ore …
As industrial waste, iron ore tailings (IOTs) can be mixed with bentonite and bauxite and subsequently sintered into ceramsite. Under sintering at 1120 °C, ceramsite with 60- wt% IOTs, 30- wt% bentonite, and 10- wt% bauxite showed an optimal cylinder compressive strength of 10.53 MPa, bulk density of 917.84 kg m −3, 1-h water absorption of 9.9%, and …
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