Quartz crystals are oxide minerals with the trigonal or hexagonal system, whose cell parameters are: a = 4.916 Å, b = 4.916 Å, c = 5.405 Å. The Si-O bond angle in α-quartz is 144° and the bond length is between 0.16101 and 0.16145 nm (Götze, 2009). The different types of quartz crystals are shown in Table 1.
This study evaluates the geochemical and mineralogical characterisation of weathering layers associated with the Mogale tailing dam in the Randfontein Cluster—Witwatersrand Basin, South Africa. In the tailing dam, it is observed that high hematite/Fe2O3 contents separate the ferruginous from the rest layers. Also, the oxidised …
mine tailing sampling was carried out. The HM concentration was determined by atomic absorption spectrophotometry; spatial analysis and the size of the contaminated areas were calculated using
As shown in Fig. 3(a), dried quartz materials (100 g per sample) are respectively calcined at 600 °C, 800 °C, 900 °C, 1000 °C and 1200 °C at air atmosphere for 5 h and 45 h. ... Nevertheless, high-silicon iron ore tailing contains abundant quartz resource. In this study, a superconducting high gradient magnetic separation (S-HGMS) …
300 kg of fresh tailing sample obtained from Forumad P lant, w as used in the . magnetic separation studies, an average grade of Cr 2 O 3 determined 7.62% in the .
The sampling points for soils and technogenic soils (Fig. 1a) are as follows: located outside the mine and tailing dumps TP1 (mountain brown-taiga soil), TP2, T9 (~ 5 km from the southern boundary of the tailing dump, alluvial soil), TP10 (garden soil Ekimchan village, 12 km from Tokur village) taken as conditional background; T1—dump …
Quartzite tailings in civil construction materials: a systematic review. Review. Published: 28 February 2023. 25, 1807–1824 ( 2023 ) Download PDF. Clean …
The tailing sample was fine grained (69.48wt% below 45 μm size), containing 20.25wt% Cr2O3 and 39.19wt% Fe2O3, with a Cr:Fe mass ratio of 0.51. ... and quartz. The sample contained 34.22wt ...
In this study, the quartz tailing was modified by calcining the material mixed with carbide slag at 1050°C. The compressive strength, autogenous shrinkage, microstructure and nanomechanical ...
The remaining gold that was assumed to be associated with quartz was 0.34% of the total gold with a grade of 0.086% g/t. Intensive Cyanidation Results. In order to establish the effect of grinding finer on gold dissolution, each sample was milled to 80% -25 µm prior to intensive cyanidation. The intensive cyanidation conditions comprised of:
QTZ has no economic use as a coating material and is normally deposited in open-air yards (Santos 2015).From 1950 to 2008, a governmental assessment estimated that at least 19 million tonnes of this tailing has been accumulated in the vicinity of the city of São Thomé das Letras alone (FEAM 2009), one of the largest producing regions in …
A few studies have considered recovering quartz from iron ore tailing to prepare high-purity quartz, ... 0.96% for CaO, and 0.81% for Al 2 O 3 in the tailing sample, as illustrated in Fig. 2 b and Table S1. Remarkably, quartz was determined as the primary gangue of the high-silicon iron ore tailing; the main secondary mineral was hematite ...
The tailing sample was fine grained (69.48wt% below 45 µm size), containing 20.25wt% Cr2O3 and 39.19wt% Fe2O3, ... goethite, and gibbsite are the dominant mineral phases with minor amounts of hematite, kaolinite, and quartz. The sample contained 34.22wt% chromite, and chromite liberation is more than 80% for grains smaller than 250 µm in size ...
2.1 Sampling. During field geologic mapping of the study area, mineralised quartz vein was collected as grab samples. Samples of mine tailings in the study area were collected (Fig. 2) using an auger at depths of 30–50 cm to avoid high content of Fe–Mn oxide and humus since the exposed tailings are easily oxidize due to atmospheric …
characteristics of soil developed on this tailing. The representative sampling location of soils were ... The mineralogical analysis showed that quartz mineral is the dominant, and feldspar ...
sampling. It is the most accurate method of sampling a tailing deposit, but it is usually too expensive to use. This method is used chiefly to confirm the results of auger sampling. …
Also minor mullite peaks were seen in the XRD curve for the heat-treated mining tailing sample, most probably due to muscovite reaction (all muscovite peaks were disappeared after the heat treatment). Aasly [22] has shown that the quartz phase transforms into cristobalite at high temperatures, thus evidently this transformation has …
A sample of 100 g of the prepared tailing suspension (5% by mass) was placed in a beaker and allowed to mix for 1 min at 500 rpm with a mechanical stirrer coupled with a 3-bladed propeller stirrer (IKA—R-1388). ... Hematite and quartz were the most abundant minerals in the sedimented coarse particles, while goethite and hematite …
Several water samples have been collected depending on the features of the studied mine site: water sample collected at 8.5 m depth from a borehole (San Quintín), water samples from the tailing pond (Brunita and San Cristóbal), water sample from the watercourse crossing the mining area (San Quintín and Las Moreras), or water sample …
Last Updated: 11 Oct 2023. PDF | Introduction Tailings can cause extensive damage to soil structure and microbial community. Phytoremediation is an effective strategy for remedied... | Find, read...
Tailings valorization critically depends on the data reliability regarding pond content. • The sampling, subsampling and analytical uncertainties quantify the data …
The coarse material to be used was quartz, obtained from a local supplier. The fine material used for this study is composed of kaolinite, bentonite, and quartz. ... Sample Name Fine Fraction Composition Tailing Composition wt% SF No fines added coarse MM bentonite 80% coarse 20% bentonite KK kaolinite
Notably, AN and AP of WH, WZ, WHZ, WYHZ, and AN of WY were significantly higher than in untreated quartz tailings soil (r = 0.46, P < 0.05). The content of AN and AP were increased with the addition of urban sludge. pH value of quartz tailings soil was …
The tailing sample surface is attached with a large number of irregular granular and sheet-like structures which are not uniform under the electron microscope. ... The main mineral components of uranium slag are quartz, pyroxene, laumontite and gypsum. Among them, quartz has the highest proportion in uranium tailing and is the …
The aim of this study was to develop a comprehensive technology for the utilization of tailings from quartz vein-hosted gold deposits. We investigated the recovery potential and separation process …
Figure 1 shows the tailing sampling points. Fig. 1. Tailing sampling points within the demarcated area. Full size image. 2.2 Determination of Physical Properties. ... The XRD spectra also exhibited quartz peaks representing the high SiO 2 content from the tailings. The high sulfate content of the RO brine did not influence the ettringite ...
With the increasing awareness of sustainable mining, the cement tailings backfill (CTB) method has been developed rapidly over the past decades. In the CTB technique, the two main mechanical properties engineers were concerned with are the rheological properties of CTB slurry and the resulting CTB strength after curing. Particle …
Characterization of the iron ore tailing slime sample. The particle size analysis curve obtained using the laser granulometer (Cilas 1060) showed that there are 49.97% of slime (smaller than 10 μm) and 7.67% of colloids (smaller than 1 μm) present in the sample. ... The mineralogical composition of quartz indicates that the quartz sample …
The range values of the whole-soil removal (Uts) and relative binding intensity (IR) indexes ("equilibrium" parameters) of the TTE tailings from 1952 to 2021 were 0.24–13.2 and …
Surface sediment containing tailing material had more quartz mineral, had more similar grain size and crystal shape, fresher mineral condition, clearer color, and looser grain relation than seabed ...