Experimental Study on the Fine Iron Ore Tailing Containing Gypsum as Backfill Material

The strength of the filling body is largely affected by the properties of the binder, mineral composition, fineness, and slurry concentration of tailing. In this paper, the rheological test was conducted to determine the slurry concentration of iron ore tailing containing gypsum. Then, the samples made from slurry and three binders, Portland cement, filling plant binder, and Huazhong binder, were tested, respectively. The effects of curing time, binder-tailing ratio by mass (b/t), and slurry concentration on compression strength were investigated. The sample made from Huazhong binder and iron ore tailing presented the largest compression strength.

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Experimental Study on the Effect of Clinker Mineral Composition on the Properties of Portland Cement

Integrated Ferroelectrics ◽

10.1080/10584587.2021.1911246 ◽

2021 ◽

Vol 217 (1) ◽

pp. 1-10

Author(s):

Liyuan Yang ◽

Haixiao Ma

Keyword(s):

Experimental Study ◽

Portland Cement ◽

Mineral Composition

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Experimental study on effect of mineral composition of clinker on properties of Portland cement

Ferroelectrics ◽

10.1080/00150193.2021.1903261 ◽

2021 ◽

Vol 579 (1) ◽

pp. 209-218

Author(s):

Mingming Liu ◽

Jin Yao

Keyword(s):

Experimental Study ◽

Portland Cement ◽

Mineral Composition

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Iron Ore Tailing as Addition to Partial Replacement of Portland Cement

Materials Science Forum ◽

10.4028/www.scientific.net/msf.930.125 ◽

2018 ◽

Vol 930 ◽

pp. 125-130 ◽

Cited By ~ 3

Author(s):

Luciano Fernandes de Magalhães ◽

Isabella de Souza Morais ◽

Luis Felipe dos Santos Lara ◽

Domingos Sávio de Resende ◽

Raquel Maria Rocha Oliveira Menezes ◽

...

Keyword(s):

Portland Cement ◽

Iron Ore ◽

Mineral Exploration ◽

Planetary Mill ◽

Open Pit ◽

Partial Replacement ◽

Compression Tests ◽

X Ray Diffraction ◽

Open Pit Mines ◽

Iron Ore Tailing

The manufacture of Portland cement used in the production of concrete emits large amounts of CO2into the atmosphere, contributing to the increase of the greenhouse effect. The environmental impact generated by the mineral exploration activity is a problem of easy verification, especially in open pit mines. The present work evaluated the possibility of using iron ore tailing as an addition to the partial replacement of the cement in mortars. The iron ore tailings were processed by drying in oven (48h at 105oC) and milling in a planetary mill (10min at 300RPM), obtaining medium grain size of 14,13 μm. For the characterization, laser granulometry, X-ray diffraction (XRD), scanning electron microscopy (SEM) and differential thermal and thermogravimetric analysis (DTA / TGA) were performed. The sample is composed predominantly by quartz, hematite, goethite and gibbsite. After the characterization, the waste was used in the preparation of test specimens, with 10, 20 and 30% weight substitution of the cement. The composites were submitted to compression tests, with ages of 3, 7 and 28 days, using a strength rate of 0,25MPa/s. The mortars with 10, 20 and 30% of substitution presented resistance of 41.65, 36.26 and 31.64 MPa, being able to be characterized as category of Portland cement of resistance 40, 32 and 25 respectively. Considering the reduction of cement in the mortars produced, the results of compressive strength were relevant for the substitutions. The cements produced with the substitutions according to the Brazilian standards under the mechanical aspect can be classified as Portland cement.

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Preparation of Foam Glass Composite from Iron Ore Tailing

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.168-170.1653 ◽

2010 ◽

Vol 168-170 ◽

pp. 1653-1657

Author(s):

Shu Hui Zhang ◽

Zhi Qiang Kang ◽

Qing Lu

Keyword(s):

Bulk Density ◽

Compression Strength ◽

Iron Ore ◽

Sintering Temperature ◽

Foam Glass ◽

X Ray Diffraction ◽

Glass Composite ◽

Iron Ore Tailing ◽

Amorphous Glass ◽

Foaming Temperature

Foam glass composite with good capabilities was prepared from iron ore tailings as the main material by two steps. The phase composition and microstructure were determined by X-ray diffraction and scanning electron microscopy. The effects of foaming temperature and sintering temperature on sample capabilities were studied by determining sample bulk density and compression strength. The results show that the main phase of basis glass powder is amorphous mineral. The foam glass composite with enclosed circle pore mainly concludes Ca[(Fe,Mg)][SiO3]2 and amorphous glass. The diameter size of pore is wide and distributes evenly. The foam glass composite, whose compression strength is 62.25MPa, and bulk density is 2.056 g/cm3, has fine complex capabilities. With the increase of foaming temperature the sample pore diameter size raises, while bulk density and compression strength reduces. The bulk density and compression strength all diminish firstly and raise subsequently with the sintering temperature increasing. The optima temperature parameters are foaming temperature of 900~950 and sinter temperature of 1100 .

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Relationships between particle breakage characteristics and comminution response of fine iron ore concentrates

Minerals Engineering ◽

10.1016/j.mineng.2021.106818 ◽

2021 ◽

Vol 164 ◽

pp. 106818

Author(s):

Túlio M. Campos ◽

Gilvandro Bueno ◽

Victor A. Rodriguez ◽

Ann-Christin Böttcher ◽

Arno Kwade ◽

...

Keyword(s):

Iron Ore ◽

Particle Breakage ◽

Fine Iron

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Study on the feasibility of using iron ore tailing (iot) on technological properties of concrete roof tiles

Construction and Building Materials ◽

10.1016/j.conbuildmat.2021.122484 ◽

2021 ◽

Vol 279 ◽

pp. 122484

Author(s):

Tony Matheus Carvalho Eugênio ◽

Jefferson Francisco Fagundes ◽

Queilla Santos Viana ◽

Alan Pereira Vilela ◽

Rafael Farinassi Mendes

Keyword(s):

Iron Ore ◽

Technological Properties ◽

Iron Ore Tailing

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Effect of Coated Cow Dung on Fluidization Reduction of Fine Iron Ore particles

Processes ◽

10.3390/pr9071175 ◽

2021 ◽

Vol 9 (7) ◽

pp. 1175

Author(s):

Qiyan Xu ◽

Zhanghan Gu ◽

Ziwei Wan ◽

Mingzhu Huangfu ◽

Qingmin Meng ◽

...

Keyword(s):

Iron Ore ◽

Linear Velocity ◽

Operating Conditions ◽

Inhibition Mechanism ◽

Cow Dung ◽

Reduction Temperature ◽

Reduction Time ◽

Reducing Gas ◽

Fine Iron ◽

Ironmaking Process

The effects of reduction temperature, gas linear velocity, reduction pressure, reduction time, and reducing gas on the fluidized ironmaking process were studied for the fine iron Newman ore particles (0.154–0.178 mm) and the optimal experimental operating conditions were obtained. Under the optimal conditions, the effects of the coated cow dung on the reduction of fine iron ore particles were studied, and the inhibition mechanism of cow dung on particle adhesion in the fluidized ironmaking process was elucidated. The experimental results show that the optimal operating parameters are linear velocity of 0.6 m/s, reduction pressure of 0.2 MPa, reduction temperature of 1023 K, H2 as the reducing gas, and reduction time of 60 min. Cow dung can react with oxide in the ore powder to form a high melting point substance that can form a certain isolation layer, inhibit the growth of iron whiskers, and improve the fluidization.

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Flotation Experimental Study of High-Sulfur Cu-Zn Ore in Yunnan

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.490-491.160 ◽

2014 ◽

Vol 490-491 ◽

pp. 160-163

Author(s):

Zhi Guo Zhang ◽

Quan Jun Liu ◽

Jin Cheng Ran

Keyword(s):

Experimental Study ◽

Mineral Composition ◽

Recovery Rate ◽

Closed Circuit ◽

Copper Concentrate ◽

Concentrate Grade ◽

And Control ◽

Zinc Concentrate

The experimental ore belongs to high-sulfur Cu-Zn poly-metallic ore, the mineral composition of ore is complex, cupriferous pyrite most are disseminated. The Cu grade of raw ore is 0.76%, Zn grade is 1.48% and S about 25.02%. on the basis of best reagent system and control flotation time, the author did closed circuit process. the results of closed circuit process as follows: the copper concentrate grade is 20.35% and recovery rate is 86.081%; the zinc concentrate grade is 54.32% and recovery rate is 84.20%.

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