Beneficial effects of a polysaccharide-based grinding aid on magnetite flotation: a green approach

Chipakwe, Vitalis; Karlkvist, Tommy; Rosenkranz, Jan; Chelgani, S. Chehreh

doi:10.1038/s41598-022-10304-x

Cited by 6 publications

(4 citation statements)

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“…5 a). It was reported that “although Lilaflot is a selective collector for quartz, its high concentration could also increase the recovery of iron oxides’’ 23 . These outcomes highlighted the importance of using depressants for the reverse flotation separation of hematite from quartz.…”

Section: Resultsmentioning

confidence: 99%

Starch vs. tannin as biodegradable reagents for ultrafine hematite depression

Kordloo,

Rahmanian,

Mohammadzadeh

et al. 2024

Sci Rep

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Enrichment of ultrafine liberated valuable minerals from their associated gangue phases is one of the emerging investigation topics within mineral processing and recycling. Using green flotation reagents and turning processes into eco-friendly systems is also one of the challenges in the green transition of ore beneficiation plants. Starch and Tanin as biodegradable depressants for hematite depression have been commercially used in various iron ore processing plants. However, their depression effects on ultrafine particles were not systemically assessed and compared. To fill this gap, this investigation examined the effects of starch, tannin, their mixtures (different ratios), and their different conditioning sequence on the floatability of ultrafine quartz and hematite (− 15 µm). Since the macromolecular polymer of these biodegradable depressants can bind particles together and flocculate them, turbidity analyses were used to assess their optimum ratio for hematite depression without affecting quartz floatability. Turbidity analyses provided a mixture of tannin and starch might enhance the flotation separation of quartz from hematite. Starch could flocculate ultrafine hematite particles, while tannin could disperse ultrafine quartz particles. Floatability experiments indicated that starch had the highest performance in hematite depression (lowest effect on quartz particles) compared to other conditions. Surface analyses (zeta potential and FTIR) proved floatability outcomes and highlighted starch had stronger adsorption on the hematite surface than tannin.

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Section: Resultsmentioning

confidence: 99%

Starch vs. tannin as biodegradable reagents for ultrafine hematite depression

Kordloo,

Rahmanian,

Mohammadzadeh

et al. 2024

Sci Rep

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“…The hydroseeding of Leguminosae, Poaceae, and Cyperaceae is effectively used on the landscapes to reclaim sites and reduce soil erosion in the post-mining period [20]. The increase in the related environmental problems [21][22][23] actualizes not only the need to develop a green mining strategy [24], green technologies for mineral enrichment [25], involving other sustainable technologies [26] but also a transition to a sustainable use of mineral resources based on circular economy models [27][28][29]. A circular economy implies the closure of resource flows without forming associated wastes [30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Circular Mining Wastes Management for Sustainable Production of Camellia sinensis (L.) O. Kuntze

et al. 2023

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Mining operations have a significant negative impact on the surrounding ecosystems. The operation of mines and quarries creates a large amount of waste that accumulate and are practically unrecyclable in the environment. The involvement of these wastes in economic activity is an extremely urgent task. This can make the economy more sustainable and reduce its influence on ecosystems. This work presents the attempts of using quarry wastes as a fertilizer applied for growing tea crops. The novelty of this research involves revealing the quarry wastes as a fertilizer when growing Camellia sinensis (L.) O. Kuntze and assessing changes in the productivity of this plant when applying these calcium wastes. The waste of a quarry intended for extracting crushed stone was studied in this article. The composition of the waste was analyzed. Fertilizers used for manuring the soil were prepared based on the waste. Two experimental sites were selected. One of them was a control, where Camellia sinensis (L.) O. Kuntze was grown without using fertilizers. Fertilizers obtained from the waste were applied on the second site. The experimental work proceeded for 10 years. When discussing the results, special attention was paid to climatic conditions. This was caused by the need to show that it was the use of the fertilizer that influenced the change in the yield, not the climatic conditions. As a result of using calcium fertilizers based on the waste, the productivity of Camellia sinensis (L.) O. Kuntze was increased. The application of the fertilizers based on the quarry wastes was shown to provide an increase in the yield. The possibility of using calcium fertilizers to overcome unfavorable agroclimatic conditions during the tea cultivation was also demonstrated. To assess the climatic impact of applying new fertilizers, three-dimensional modeling in the “gnuplot v.5.4” software was used. As a result, an increase in the average annual precipitation, from 1000 to 1980 mm/year, in the range of the average annual air temperature, from 14 to 16 °C, was found to lead to an increase (when using a new fertilizer) in the yield of Camellia sinensis (L.) O. Kuntze up to 4.8 times (from 20 to 95 centner/ha). The results have shown that applying fertilizers based on the quarry wastes is also possible in unfavorable climatic conditions.

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“…It is worth noting that the main problem of extracting metals from enrichment tailings is the search for optimal parameters and ways to increase their reactivity. The most promising direction for this is to ensure the amorphization of raw materials using a highenergy mechanical action [71,72]. The mechanochemical activation increases the surface area of a solid and decreases the coherence energy, causing a spontaneous aggregation, adsorption, or recrystallization of a geomaterial [73].…”

Section: Introductionmentioning

confidence: 99%

Reuse and Mechanochemical Processing of Ore Dressing Tailings Used for Extracting Pb and Zn

Golik,

Klyuev,

Martyushev

et al. 2023

Materials

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The increasing accumulation of rock waste obtained due to ore processing and its environmental impacts, such as acid mine drainage and elevated concentrations of heavy metals in soils, necessitates the transformation of mining technologies based on the concept of circular waste management. The research is aimed at improving the parameters of the mechanical activation effect produced on technogenic georesources, as well as at expanding the application scope of disintegrators in the field of using the partial backfill of the mined-out space when developing stratified deposits. In this regard, the research purpose was to substantiate the parameters of extracting metals from enrichment tailings using their mechanochemical activation to ensure cyclic waste management. The research involved the application of three-dimensional interpolation methods used for processing the data and the graphical representation. As a result, the following was found to be characteristic of the waste of the Sadonsky mine management. The degree of extracting zinc from pre-activated tailings increases logarithmically when the H2SO4 concentration and the NaCl proportion decrease 3.5 times. The degree of extracting lead from the activated tailings increases according to the Fourier law when decreasing the NaCl mass concentration, and an optimal range of the H2SO4 (0.38–0.51%) proportion decreases six times. One of the key results of the research is the justification of expanding the scope of applying disintegrators in the case of a directed activation influence exerted on the components of the stowing strips. The obtained results expand the understanding of the mechanism of the influence of the mechanochemical activation of dry tailings on the reactivity unevenness when extracting several metals from them.

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Beneficial effects of a polysaccharide-based grinding aid on magnetite flotation: a green approach

Cited by 6 publications

References 50 publications

Starch vs. tannin as biodegradable reagents for ultrafine hematite depression

Starch vs. tannin as biodegradable reagents for ultrafine hematite depression

Circular Mining Wastes Management for Sustainable Production of Camellia sinensis (L.) O. Kuntze

Reuse and Mechanochemical Processing of Ore Dressing Tailings Used for Extracting Pb and Zn

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