Iron Ore Tailing: A Waste Material used in Ceramic Tile Compositions as Alternative Source of Raw Materials

Das, Swapan Kumar; Ghosh, Jiten; Mandal, Abhijit; Singh, Nar; Gupta, Surajit

doi:10.1080/0371750x.2012.689507

Cited by 13 publications

(6 citation statements)

References 6 publications

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“…Fly ash and iron tailing play the role of modifier in the molten glass mixture through adjusting the glass composition and decreasing the molten viscosity and melting temperature. 17,21 The molten and reduced iron was subsequently separated from the slag; the molten iron sunk Downloaded by [New York University] at 01: 22 22 June 2015 and converged at the bottom of crucible due to higher specific gravity and surface tension of iron. Then the melt was rapidly poured into cold water to get the glass frit and limited amount of metallic iron block.…”

Section: Resultsmentioning

confidence: 99%

“…The crystallization temperature T p was set at the exothermic peak temperature based on our previous experience 12 and reference literature. 13,14 In the last decade, several works have been published regarding slag glass-ceramics from the residues, such as metallurgical slag, 15,16 iron tailing 17,18 and fly ash. 19 However, limited work has been published on synergistic preparation of slag glass-ceramics from the residue of these three solid wastes after recovering valued metals, mainly ferrum.…”

Section: Introductionmentioning

confidence: 99%

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Influence of Ferrum on Crystallization and Microstructure of Steel Slag Based Glass-Ceramics

Liu

Zong

Feng

et al. 2015

Transactions of the Indian Ceramic Society

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The influence of iron content and oxidation state on the crystallization and microstructure of steel slag based glass-ceramics was investigated in the CaO-Al 2 O 3 -SiO 2 -MgO-FeO x system. The crystallization mechanism of parent glass and microstructure of final products were studied by thermogravimetry and differential thermal analysis (TG-DTA), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and field emission scanning electron microscopy (FESEM). The results indicate that part of Fe 3+ appeared as six-coordinated [FeO 6 ] octahedron and acted as network modifier with more ferrous or metallic irons being further oxidized to ferric irons. The crystalline temperatures of glass samples shifted to higher values as the iron content became lower supported by the result of crystallization activation energy. The crystal morphology of low iron content samples appeared mainly in the form of cluster or column and limited amount of granule, while sample with high iron content was principally composed of granular crystals.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of Ferrum on Crystallization and Microstructure of Steel Slag Based Glass-Ceramics

Liu

Zong

Feng

et al. 2015

Transactions of the Indian Ceramic Society

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“…Many researchers have investigated the utilization of iron tailings for production of building materials such as bricks, ceramic tiles, cement, or concrete, microcrystalline glasses, and underground backfill materials (Kuranchie, 2015;Sun, Ren, and Lu, 2010;Das, Kumar, and Ramachandrarao, 2000;Das et al, 2012;Tang et al, 2019, Li andWang, 2008;. A little information about using iron ore tailings for pellet making can be found in the literature.…”

Section: Introductionmentioning

confidence: 99%

Technological research on converting iron ore tailings into a marketable product

Mitov

Stoilova

Yordanov

et al. 2021

J. S. Afr. Inst. Min. Metall.

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SYNOPSIS We present three technological scenarios for the recovery of valuable components from gangue, stored in the tailings dam at Kremikovtzi metallurgical plant in Bulgaria, into marketable iron-containing pellets. In the first approach the iron concentrate was recovered through a two-stage flotation process, desliming, and magnetic separation. In the second proposed process, the iron concentrate was subjected to four sequential stages of magnetic separation coupled with selective magnetic flocculation. The third route entails the not very common practice of magnetizing roasting, followed by selective magnetic flocculation, desliming, and magnetic separation. The iron concentrate was pelletized in a laboratory-scale pelletizer. Each technology has been assessed with regard to the mass yield of iron concentrate, the iron recovery. and the iron, lead, and zinc content in order to identify the most effective route. Keywords: tailings reprocessing, magnetizing roasting, pelletization.

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“…However, these processes create new waste streams after the recovery of iron and are inefficient when using traditional mineral processing techniques. IOTs can also be used to make other products, such as ceramic tiles [9,10], engineered cementitious composites [11], IOT-filled polypropylene cement, and epoxy composites [12,13], and underground backfill mining materials [3]. The conversion of solid industrial waste into other valuable products has received considerable attention in recent years.…”

Section: Introductionmentioning

confidence: 99%

Recovering Iron from Iron Ore Tailings and Preparing Concrete Composite Admixtures

Tang

Wen

et al. 2019

Minerals

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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 studied at different points during a process involving pre-concentration followed by direct reduction and magnetic separation. Then, slag-tailing concrete composite admixtures were prepared from high-silica residues. Based on the analyses of the chemical composition and crystalline phases, a pre-concentration test was developed, and a pre-concentrated concentrate (PC) with an iron grade of 36.58 wt % and a total iron recovery of 83.86 wt % was obtained from a feed iron grade of 12.61 wt %. Furthermore, the influences of various parameters on iron recovery from PC through direct reduction and magnetic separation were investigated. The optimal parameters were found to be as follows: A roasting temperature of 1250 °C, a roasting time of 50 min, and a 17.5:7.5:12.5:100 ratio of bitumite/sodium carbonate/lime/PC. Under these conditions, the iron grade of the reduced iron powder was 92.30 wt %, and the iron recovery rate was 93.96 wt %. With respect to the original IOTs, the iron recovery was 78.79 wt %. Then, highly active slag-tailing concrete composite admixtures were prepared using the high-silica residues and S75 blast furnace slag powder. When the amount of high-silica residues replacing slag was 20%, the strength of cement mortar blocks at 7 days and 28 days was 33.11 MPa and 50 MPa, respectively, whereas the activity indices were 89 and 108, respectively. Meanwhile, the fluidity rate was appropriately 109. When the content of high-silica residues replacing slag was not more than 30%, the quality of mineral admixtures was not reduced. Last but not least, reusing the high-silica residues during iron recovery enabled the complete utilization of the IOTs.

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Iron Ore Tailing: A Waste Material used in Ceramic Tile Compositions as Alternative Source of Raw Materials

Cited by 13 publications

References 6 publications

Influence of Ferrum on Crystallization and Microstructure of Steel Slag Based Glass-Ceramics

Influence of Ferrum on Crystallization and Microstructure of Steel Slag Based Glass-Ceramics

Technological research on converting iron ore tailings into a marketable product

Recovering Iron from Iron Ore Tailings and Preparing Concrete Composite Admixtures

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