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The massive annual tonnage of iron ore tailings, plus the more demanding environmental policies after the catastrophic collapses of Fundão Dam in 2015 and …
In this research, iron ore tailing (IOT) is utilized as the cementitious material to develop an eco-friendly ultra-high performance concrete (UHPC). The UHPC mix is obtained according to the modified Andreasen and Andersen (MAA) packing model, and the applied dosage of IOT is 10%, 20%, and 30% (by weight), respectively. The calculated …
Iron ore tailings (IOTs) are a form of solid waste produced during the beneficiation process of iron ore concentrate. In this paper, iron recovery from IOTs was …
As shown in Table 1, IOT indeed exhibits many differences compared with NS in terms of physical properties. ... Synthetic gravel for concrete obtained from sandy iron ore tailing and recycled polyethyltherephtalate. Constr. Build. Mater., 151 (2017), pp. 859-865, 10.1016/j.conbuildmat.2017.06.133.
made with iron ore tailing and determining the optimum content of sand and iron ore tailing combination suitable for use as fine aggregate for concrete used for rigid pavement. 2. Materials and Methods 2.1 Materials 2.1.1 Cement Ordinary Portland cement conforming to ASTM 150 specification was used. Table 1 shows the physical
Glass wool residue from the iron ore industry was also included as a blend material. Four mixtures of geopolymers were produced: one mixture using only iron ore tailing; three mixtures where the iron ore tailing was replaced by the glass wool residue, with a substitution ratio of 10%, 20% and 30% (in mass).
In the last category, iron ore tailing powder and zeolite were combined at 5%, 10%, 15%, and 20% as replacements for both fine aggregate and cement, respectively, represented as IPZ (correspondent ...
Mineral waste from the Germano dam in Mariana, Minas Gerais, Brazil was provided by Samarco Mineração S.A. Two types of IOTs were received: iron ore tailing – coarse (IOT-C) and iron ore tailing – fine (IOT-F), as shown in Fig. 1.. Download : Download high-res image (184KB) Download : Download full-size image Fig. 1.
Iron ore tailings obtained from the Jiuquan Iron and Steel Corporation in Gansu Province of China were used for the experiments. The iron ore tailings …
The deposit is mainly exploited for its iron ore, and only about 10% to 15% of the rare earth content is recovered; due to this low percentage, the average REE law of tailing has been increased from 6.8% to 8.85%, close to the grade of raw ore . The rest are stored in tailing dams as a secondary resource, causing pollution and environmental risks.
After the beneficiation of iron ore, the waste is generated, which arise many environmental issues for both living and nonliving components. 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. The purpose of this research is to …
Ananthayya M.B1, Prema Kumar W.P.2 and Vijay K.3 (August - 2014) - Effect of Partial Replacement of Sand by Iron Ore Tailing (IOT) and Cement by Ground Granulated Blast Furnace Slag (GGBFS) on the Compressive Strength of Concrete [5] Dr. Prema Kumar W.P.1, Mr. Ananthayya M.B.2 and Mr. Vijay K.3 (July - 2014) - Effect of …
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 ...
World is bestowed with self-sufficient magnetite and hematite iron ores. Huge volume of mining waste, namely iron ore tailings (IOT), is generated during processing of iron ore, leading to environmental concerns. At the same time, due to excessive usage and environmental regulations, there is scarcity of naturally available …
Download Table | Physical properties of iron ore mine tailings [1]. from publication: Load–settlement behaviour of a strip footing resting on iron ore tailings as a structural fill | This study ...
From Tables 1 and 3, it can be seen that iron ore tailings contain 6.5% fines, while the natural sand used in this work contains only 3.85% fines. It should be noted …
Table 1. Physical properties of iron ore tailings. Download CSV Display Table. Table 2. Chemical composition of iron ore mine tailings ... T. I., Ejeh, S. P., & Amartey, D. Y. (2014). Effect of iron ore tailing on the properties of concrete. Civil and Environmental Research, 6, 7–13. Google Scholar. W. A. Department of Mines and …
The use of geophysical techniques can contribute considerably to the advancement and optimization of subsurface surveys, due to the low costs and time effectiveness. Ground penetrating radar (GPR) has great potential to rapidly and non-invasively evaluate soil in sites affected by the Fundão dam collapse, Southeastern …
The component analyses of the studied tailings were shown in Table 1, and the table indicates that Fe, Si and Ca are the three most abundant elements in the tailings, and the converter slag iron tailing (tailing E) contains the highest amount of iron.Also worth noting is these iron tailings all contain some toxic heavy metals. Therefore, it is …
1. Introduction. Iron ore tailing (IOT), as an industrial solid waste generated during iron ore beneficiation, discharges more than 10 billion tons of tailings and waste rocks every year in the world [1].Over the past thirty years of reform and opening up, with the rapid development of China's iron and steel industry, IOT has become one of the …
Iron ore tailing (IOT) is a solid waste generated after the beneficiation process of iron ores. Further, due to the complex nature of ore, the amount of IOT generated varies from place to place. ... Table 1 presents the chemical composition of raw materials. As seen, IOT contains low silica content and predominantly consists of iron …
The research on whether can iron ore tailing improve the compressive strength of alkali- activated slag ing concrete is conducted. The experiment shows that too little or too much powder from iron ore tailing will reduce the compression strength of alkali activated slag concrete, when powder from iron ore tailing achieving optimal …
Fig. 2 illustrates the iron ore beneficiation process, particularly magnetic separation, resulting in the generation of inevitable tailings. Due to the characteristics of …
Currently, approximately 1.4 billion tons per year of iron ore tailing wastes (IOT) are generated, mainly in Australia, Brazil, and China. This work describes the characterization and application of two typical IOT, i.e., fine and coarse wastes. The physicochemical characterization of these IOT by different techniques such as XRF (X-ray fluorescence), …
Table 6.1 Production of iron ore tailing (IBM-statistical profile, 2018–19) Full size table. Fig. 6.1. ... Iron ore tailing stabilized with 5–15% of other additives such as cement and lime is found to be suitable for subbase and base layers in pavements. Structural fill could be the best application where huge quantity of tailing can be ...
6. C6 (80% IRON ORE TAILING) 6 Table 6 Mixture proportions of fresh concrete with 10% iron ore tailing. Material C2(KG/m 3) Mixture proportions Cement 427 F.A 647.24 C.A 1124 Iron ore tailings, 71.92 Water 192 3. Result and Discussions The results of fresh properties of concrete such as slump are determined and hardened properties such as ...
The mining industry produces large amounts of tailings which are disposed of in deposits, which neglects their potential value and represents important economic, …
Table I: Physical Properties of Iron Ore Tailings. ... Effect of iron ore tailing on the properties of concrete. [16] S. Zhao, J. Fan & Wei Sun. (2014). Utilization of.
And a comparison table of mesoporous silica materials from iron ore tailing is shown in Table S1. 2.3. Characterization. The X-ray diffraction (XRD) measurement was performed on a Bruker D8 FOCUS (Germany) with Cu Kα radiation of a tube voltage of 40 kV and a tube current of 40 mA. The structural details were obtained by Fourier …
Iron ore tailings. A number of representative iron ore tailing samples were acquired from different locations of the dry tailing disposal areas (cf. Fig. 2).As illustrated in Fig. 3, the tailings were loosely dumped as piles; thus, their sampling did not necessitate any particular practice and merely involved filling bags with a hand shovel.A total …
Abstract Iron ore tailing (IOT) is the wastes generated during the salutariness process of iron ore concentration. These wastes are abundant in quantity, which ... Table 2 Physical properties of iron ore tailing Reference Specific gravity Density (g/cm3) Moisture content (%) Void ratio Loose bulk density (kg/m3) Water
Since the Fundão Dam rupture in Southeastern Brazil caused an enormous amount of iron ore tailing (IOT) to be discharged into the Doce River Catchment, various works have been published on the soil, water, and biota contamination by potentially hazardous trace metals. However, the objective of this study is to investigate changes in …
The S2 tailings have a fines content (FC) of 33.3% and a specific weight (G s) of 2.97. This feature is associated with the process of iron ore beneficiation for the …
This study evaluated the stabilization of iron ore tailings (IOTs) with an alkali-activated binder (AAB) produced from sugar cane bagasse ash, hydrated eggshell lime, and sodium hydroxide solution.
The manganese was significantly higher in site II (P < 0.001), which can be justified by the pH of the iron ore tailing disposed in this site (Table 1). One of the factors that determines the availability of manganese in the soil is the pH, since values lower than 6.5 promote the reduction of Mn 4+ to Mn 2+.
Effect of iron ore tailings as partial replacement to ne aggregate ... as an alternate building material, iron ore tailings from tailing dams are being tested. The chemical, mineral-ogical, environmental, and physical aspects of iron ore tail- ... FA and CA are listed in Table 1. All tests were done as per Bureau of Indian Standards (BIS) [45 ...
In order to comprehensively utilize iron ore tailings (IOTs), the possibility of using IOTs as raw materials for the preparation of cementitious composites (IOTCCs) was investigated, and IOTCC was further applied to mine interface pollution control. The mechanical properties, hydration products, wind erosion resistance, and freeze–thaw …
Tailing, in context to mining, is defined as the waste or non-economic by-product generated during mining activities, processing of minerals, and other materials that contain small amounts of residual valuable minerals, chemicals, water, and heavy metals (Adiansyah et al. 2015).Studies indicated that the process of mineral exploitation and …
Iron ore tailing (IOT) is the wastes generated during the salutariness process of iron ore concentration. These wastes are abundant in quantity, which can be utilized in many ways. ... The details of the chemical constituent's properties are summarized in Table 1. Table 1 Chemical properties (%) of IOT. Full size table.
Iron ore tailings (IOTs) are a byproduct of the iron ore beneficiation process and are a significant source of solid waste [13, 14]. In China alone, an astounding 600 million tons of IOTs are produced annually, yet the utilization rate remains shockingly low at …