Application of mineral liberation analysis in studying micro-sedimentological structures within sulfide mine tailings and their effect on hardpan formation

Redwan, Mostafa; Rammlmair, Dieter; Meima, Jeannet A.

doi:10.1016/j.scitotenv.2011.10.038

Cited by 41 publications

(14 citation statements)

References 24 publications

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“…These surface impurities inhibit the transformation of ferrihydrite to more crystalline phases such as hematite and goethite. Further investigation is warranted to characterize the dynamic processes of weathering and transformation of Fe-minerals in the tailings by means of X-ray absorption spectroscopy and mineral liberation analysis [ 37 , 38 ].…”

Section: Discussionmentioning

confidence: 99%

Extremely High Phosphate Sorption Capacity in Cu-Pb-Zn Mine Tailings

Huang

Nguyen

2015

PLoS ONE

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Elevated inorganic phosphate (Pi) concentrations in pore water of amended tailings under direct revegetation may cause toxicity in some native woody species but not native forbs or herb species, all of which are key constituents in target native plant communities for phytostabilizing base metal mine tailings. As a result, Pi sorption capacity has been quantified by a conventional batch procedure in three types of base metal mine tailings sampled from two copper (Cu)-lead (Pb)-zinc (Zn) mines, as the basis for Pi-fertiliser addition. It was found that the Pi-sorption capacity in the tailings and local soil was extremely high, far higher than highly weathered agricultural soils in literature, but similar to those of volcanic ash soils. The Langmuir P-sorption maximum was up to 7.72, 4.12, 4.02 and 3.62 mg P g-1 tailings, in the fresh tailings of mixed Cu-Pb-Zn streams (MIMTD7), the weathered tailings of mixed Cu-Pb-Zn streams (MIMTD5), EHM-TD (fresh Cu-stream, high magnetite content) and local soil (weathered shale and schist), respectively. Physicochemical factors highly correlated with the high Pi-sorption in the tailings were fine particle distribution, oxalate and dithionite-citrate-bicarbonate extractable Fe (FeO and Fed), oxalate-extractable Al and Mn, and the levels of soluble Cd and Zn, and total S and Fe. Large amounts of amorphous Fe oxides and oxyhydroxides may have been formed from the oxidation of pyritic materials and redox cycles of Fe-minerals (such as pyrite (FeS2), ankerite (Ca(Fe Mg)(CO3)2 and siderite (FeCO3), as indicated by the extractable FeO values. The likely formation of sparingly soluble Zn-phosphate in the Pb-Zn tailings containing high levels of Zn (from sphalerite ((Zn,Fe)S, ZnS, (Zn,Cd)S)) may substantially lower soluble Zn levels in the tailings through high rates of Pi-fertiliser addition. As a result, the possibility of P-toxicity in native plant species caused by the addition of soluble phosphate fertilizers would be minimal.

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Section: Discussionmentioning

confidence: 99%

Extremely High Phosphate Sorption Capacity in Cu-Pb-Zn Mine Tailings

Huang

Nguyen

2015

PLoS ONE

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“…They give useful information about mineral properties of the feed mixtures, such as particle size, texture, mineral surfaces, mineral associations, and characteristics of the mineral assemblages on a lm-to-mm scale. [37] As shown in the supplementary material (Supplementary Table S-1), the ore minerals in the two feed mixtures were similar, but the mineral compositions were obviously different. In the feed mixtures A0 and B0, concentration of chalcopyrite was the highest followed by pyrite and quartz.…”

Section: A Analyses Of the Feed Mixturesmentioning

confidence: 92%

Characterization of Copper Smelting Flue Dusts from a Bottom-Blowing Bath Smelting Furnace and a Flash Smelting Furnace

Chen

Zhao

Taskinen

et al. 2020

Metall Mater Trans B

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The smelting technology and flue dust treatment have an influence on the physical and chemical characteristics of flue dusts collected in copper smelting. We characterized flue dusts from a Bottom-Blowing Bath Smelting (BBS) process and from a Flash Smelting (FS) process by determining their comprehensive physical, chemical, and mineralogical characteristics. Annual flue dust generation data showed that the rate of the BBS process (2 to 3 pct) was clearly lower than that of FS process (5 to 6 pct). The results revealed that copper smelting flue dusts from the FS exhibited a larger entrainment of solids and a smaller particle size than the BBS. The crystallographic and chemical compositions of the samples indicated that the FS flue dusts have a higher degree of crystallinity than those of the BBS. Fe 3 O 4 , CuSO 4 and PbSO 4 , Fe 3 O 4 , CuFe 5 O 8 were the predominant crystalline phases in the FS and BBS flue dusts, respectively. In the FS and BBS flue dusts, amorphous multicomponent Cu-Zn-FeO x and Cu-Zn-S phases were formed, respectively. Mineralogical examinations and a stepwise chemical extraction confirmed that the majority of arsenic existed in amorphous form and mostly as pentavalent As 5+ arsenate or As 2 O 5 except that in BBS-ESPD.

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“…Meanwhile, the external oxidation conditions affect the mineral composition and form of tailings. The important indexes of the oxidation process of tailings were goethite and hematite, and jarosite sediments can be formed through mineral dissolution and reprecipitation to promote the formation of oxidizing crusts (Tang et al, 2018;Redwan et al, 2012;Regelink et al, 2014). Jarosite was the main reason that causes the surface layer of tailings to be brownish yellow, and its content decreases with the decrease of oxidation degree.…”

Section: Mineralogical Analysis Of Representative Tailing Samplesmentioning

confidence: 99%

Evaluating the Profile Geochemical Characteristics and Environmental Risk Prediction of Typical Sulfide Tailing Ponds Through Multiple Methods

Zhang¹,

Chen²,

Jiang³

et al. 2021

Preprint

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Abandoned tailings generated from copper mining are exposed to the environment for a long time will cause related risks, such as stability, landslides, surface and groundwater pollution, acid mine drainage (AMD) and secondary mineral deposits. This research started from multiple methods and comprehensively assessed the current status of mine tailings through the joint application of geophysics, geochemistry and mineralogy techniques to identify relevant environmental hazards. A thick oxidized hardened layer was formed on the surface of the tailings dam, but there were still faults or crack that affected its structural stability. According to the low-resistivity distribution of the tailings, the surface oxide compaction was judged, and the existence of high-resistivity cracks judged the potential migration path of heavy metals (HMs). The microscopic morphology and existing mineral phases of tailings particles at different depths in the profile were determined by SEM and XRD of representative samples as the main feature of iron crystalline phase. As the profile depth increased, the minerals such as calcite, pyrite and goethite gradually appeared. In addition, Cr and As were no risk, Cu, Zn, Pb were low risk, Ni was medium risk, and Cd was high risk in risk assessment code (RAC) analysis of the tailings. Judging whether HMs in the tailings are hazardous substances according to the results of toxicity characteristic leaching procedure (TCLP), it was found that the leaching contents of Cu, Zn, Pb, Cr, Ni, As were all lower than the limit, while the leaching content of Cd was higher than the limit, and additional attention should be paid to Cd pollution.

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Application of mineral liberation analysis in studying micro-sedimentological structures within sulfide mine tailings and their effect on hardpan formation

Cited by 41 publications

References 24 publications

Extremely High Phosphate Sorption Capacity in Cu-Pb-Zn Mine Tailings

Extremely High Phosphate Sorption Capacity in Cu-Pb-Zn Mine Tailings

Characterization of Copper Smelting Flue Dusts from a Bottom-Blowing Bath Smelting Furnace and a Flash Smelting Furnace

Evaluating the Profile Geochemical Characteristics and Environmental Risk Prediction of Typical Sulfide Tailing Ponds Through Multiple Methods

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