Effect of Iron Ore Tailing and Glass Powder on Concrete Properties License CC BY Authors: Dhanabal P. Sushmitha K S Abstract The aim of this research is to test the characteristics of...
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3. Test to Find the Optimum Mixing Amount of Iron Ore Tailings Workability of Samples with Different Mixing Amount of Iron Ore Tailings. Let the bulk density of C30 concrete be 2400 kg/m 3, and let the mass ratio between iron ore tailings and natural sand be α.Here, the concrete without iron ore tailings was set as reference.
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Powder Technology Volume 361, 1 February 2020, Pages 571580 A new approach for recovering iron from iron ore tailings using suspension magnetization roasting: A pilotscale study Yongsheng Sun a b, Xiaolong Zhang a b c, Yuexin Han a b, Yanjun Li a b Add to Mendeley https://// Get rights and content •
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The limited cementitious activity of steel slag (SS) powder restricts its largescale utilization as a replacement material for Portland cement and even more so for inert iron ore tailings (IOT). The microIOT (MIOT) were utilized as additives to improve the compressive strength and hydration degree of a binary system containing SS and PC.
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The cementstabilized iron ore tailings may be incorporated in road constructions as they easily fulfill strength requirements of base and subbase course layers, while the bentonitetreated tailings are applicable as cover materials in layered disposal of tailings. Introduction
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High‑silicon iron ore tailings (IOTs) as mineral solid wastes derived from the processing and utilization of iron ore, which would threaten human health and the ecological environment if handled improperly. Coincidently, it consists of abundant quartz gangue. In this study, we proposed a superconducting high gradient magnetic separation (SHGMS) coupling with acid leaching technology to ...
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Iron ore tailings (IOT) are discharged as waste after the beneficiation process to concentrate iron ore, which has triggered a series of environmental problems. ... [23] found that IOT powder decreased the compressive strength but that the strength was similar to that of plain cement paste with increasing curing age. Han et al. ...
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composite sintered bricks produced from shale, sewage sludge, coal gangue powder and iron ore tailings. Construction and Building Materials, 232(1 3), 117250. DOI / ...
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The development of iron and steel industry requires the exploitation of a large number of iron ore resources. While producing iron concentrate powder on demand, a large number of eliminated tailings will be produced [1, 2].According to statistics, tons of tailings will be produced for each ton of iron concentrate powder screened on average.
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The newly developed versions of ECC in this paper, with a cement content of, exhibit a tensile ductility of %, tensile strength of, and compressive strength of 4657MPa at ...
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Abstract This paper reports the results of an initial attempt of using iron ore tailings (IOTs) to develop greener engineered cementitious composites (ECCs). ECC is a unique class of highperformance fiberreinforced cementitious composites featuring high tensile ductility and durability.
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The article conducts a study on the iron tailings sand concrete's fracture behaviour based on the doubleK criterion. Five sets of standard threepoint bending beam specimens of concrete with 0% ...
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Iron ore tailings (IOTs) are the indusus solid waste discharged by concentrating mills after processing iron ores and selecting "valuable components" ( Yao et al., 2020 ). In China, 600 million tons of IOTs are discharged every year and the IOTs deposition has reached 5 billion tons.
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The influences of iron tailing powder (ITP) ... However, to recycle more iron from ore and tailings, the ultrafine grinding used in the beneficiation process today induces the particle size of iron tailings to finer and finer [25], which implies a potential for filler replacement in asphalt mixtures. Only a few researchers have explored this field.
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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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The two iron ore tailings (ST = sandy tailing, MT = mud tailing), with different iron content (wt.%) were initially dried at 120 ºC for 24 h. The iron tailings were direct reduced by heating 500 mg at 10 ºC min 1 up to 500 ºC in a tubular furnace and holding for 3 h with pure H 2 (50 mL min 1, Air Products, Mogi das CruzesSP, Brazil).
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The mineralogical phase and the morphology of iron ore tailing powder were investigated by XRD and SEM techniques, and the results are shown in Fig. 1. In Fig. 1 a, the main identified diffraction peaks of iron ore tailings can be assigned to quartz, kaolinite, augite and anorthite, which corresponds to the marked particles respectively in Fig. 1 b
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Iron tailing powder (ITP) is considered to have the potential to replace cement to manufacture ultrahighperformance concrete (UHPC). However, the performance of UHPC with the addition of ITP after exposure to high temperatures is more complex.
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1. Introduction. The continuous development of mineral resources forms many tailings, which is one of the rich solid waste resources. The accumulation of tailings pollutes the environment and poses a threat to the safety of surrounding people and buildings [1,2].Iron tailings (IOTs) account for the most significant proportion of the total tailings' generation in China: about 520 million tons ...
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The tailings seen here were pumped into the Gribbens Basin, next to the Empire and Tilden Iron Ore Mines in Negaunee, Michigan, USA. Once the materials are pumped into the pond, they are mixed with ... Iron Ore Mine Tailings Pond. from € THE OVERVIEW ART COLLECTION. Tailings are the waste and byproducts generated by mining operations ...
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