Roasting-leaching experiments on glauconitic rocks of Bakchar ironstone deposit (Western Siberia) for evaluation their fertilizer potential

Rudmin, Maxim; Oskina, Yulia A.; Banerjee, Santanu; Mazurov, Aleksey; Соктоев, Булат Ринчинович

doi:10.1016/j.clay.2018.05.033

Cited by 14 publications

(7 citation statements)

References 35 publications

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“…Glauconite (K 0.65-0.69 Ca 0-0.05 (Fe 1.46-1.59 Mg 0.26-0.30 Al 0.11-0.31 ) 1.96-2.06 (Si 3.48-3.66 Al 0.34-0.52 ) 4 O 10 (OH) 2 according to scanning electron microscopy (SEM) energy dispersive X-ray spectroscopy (EDS) data [46]) was collected from the Upper Cretaceous rocks of Slavgorod and Gan'kino formations of the Bakchar deposit in Western Siberia [46]. The technology to enrich glauconite concentrate (with a proportion of glauconite up to 95%) is outlined in Rudmin et al [44,45] as follows: wet sieving with a fraction between 80 and 500 µm and electromagnetic separation at a current of 3.5 A on an elctro-magnetic separator (EMS) 10/5 (JSC Mining Machines, Russia). The bulk chemical composition of glauconite concentrate is presented in Rudmin et al [45] and is characterized by a K 2 O content of 5.7%.…”

Section: Methodsmentioning

confidence: 99%

“…The technology to enrich glauconite concentrate (with a proportion of glauconite up to 95%) is outlined in Rudmin et al [44,45] as follows: wet sieving with a fraction between 80 and 500 µm and electromagnetic separation at a current of 3.5 A on an elctro-magnetic separator (EMS) 10/5 (JSC Mining Machines, Russia). The bulk chemical composition of glauconite concentrate is presented in Rudmin et al [45] and is characterized by a K 2 O content of 5.7%. urea ((NH 2 ) 2 CO), composed of 46.2% nitrogen.…”

Section: Methodsmentioning

confidence: 99%

“…Glauconite is potassium phyllosilicate (clay mineral) with a dioctahedral structure [29][30][31][32] distributed in ancient marine sediments [33][34][35][36][37][38]. Due to the high content of K 2 O (up to 8-9%), glauconite can serve as an independent unconventional potash fertilizer [39][40][41][42][43][44][45] that has a prolonged effect [46]. The aim of this research was to study the mechanochemical methods of intracalation of urea into glauconite to synthesize a polyfunctional SRF using planetary and ring mills.…”

Section: Introductionmentioning

confidence: 99%

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Mechanochemical Preparation of Slow Release Fertilizer Based on Glauconite–Urea Complexes

et al. 2019

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We investigated the mechanochemical synthesis of complex slow release fertilizers (SRF) derived from glauconite. We studied the effectiveness of the mechanical intercalation of urea into glauconite using planetary and ring mills. The potassium-nitric complex SRFs were synthesized via a mechanochemical method mixing glauconite with urea in a 3:1 ratio. The obtained composites were analyzed using X-ray diffraction analysis, scanning electron microscopy, X-ray fluorescence analysis, and infrared spectroscopy. The results show that as duration of mechanochemical activation increases, the mineralogical, chemical, and structural characteristics of composites change. Essential modifications associated with a decrease in absorbed urea and the formation of microcrystallites were observed when the planetary milling time increased from 5 to 10 min and the ring milling from 15 to 30 min. Complete intercalation of urea into glauconite was achieved by 20 min grinding in a planetary mill or 60 min in a ring mill. Urea intercalation in glauconite occurs much faster when using a planetary mill compared to a ring mill.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Mechanochemical Preparation of Slow Release Fertilizer Based on Glauconite–Urea Complexes

et al. 2019

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“…We used the enrichment waste as a fertilizer by analogy with dolomite and lime flour, i.e., with the use of crushed solid tailings sediments. Tail grinding occurs during the preparation of the raw material to obtain Portland cement, so there is no need for additional crushing operations, and, during one production process, two different technical problems are solved [68].…”

Section: Integration Into Reclamation Scenariosmentioning

confidence: 99%

Reutilization Prospects of Diamond Clay Tailings at the Lomonosov Mine, Northwestern Russia

Пашкевич

Alekseenko

2020

Minerals

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Approaches to reutilization of diamond clay tailings in northern environments are considered in the example of the Subarctic region of Russia. The monitoring studies are conducted at storage facilities of Severalmaz PJSC where ca. 14 million cubic meters of waste rock are produced annually after kimberlite mining and processing. The tailings of diamond ore dressing waste are situated in complex geological conditions of high-groundwater influx and harsh cold climate with low levels of solar radiation and the average annual temperature below freezing point. Furthermore, the adjoining protected forests with a significant diversity of biogeocenoses and salmon-spawning rivers are affected by the storage area. Reducing the impact of the tailings can be achieved through the reuse of the stored clay magnesia rocks obtained from saponite-containing suspension. The experiments reveal the most promising ways of their application as potential secondary mineral raw materials: cement clinker and ceramics manufacture, integration of alkaline clay into the reclamation of acidic peat bogs, and production of aqueous clay-based drilling fluid. Field and laboratory tests expose the advantages and prospects of each suggested treatment technique.

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“…However, it is important to stress that Verdete is an ore made up of a mixture of these minerals, and the mechanism for a given mineral may be influenced by the presence of the others. For example, sulphuric acid is efficient in breaking down the structures of K-feldspar (Ma et al 2017), muscovite (Pei et al 2018) and glauconite (Rudmin et al 2018). In Verdete, the release of potassium under the action of the acid occurs primarily due to the rupture of the micas, while the contribution of K-feldspar appears to be minimal (Schimicoscki et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Potassium-bearing species in fertiliser obtained by hydrothermal modification of glauconitic siltstones with calcium hydroxide

Peixoto

Oliveira

Ávila-Neto

2020

Mineral Processing and Extractive Metallurgy

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The hydrothermal dissolution of a Brazilian glauconitic siltstone, known as Verdete, in the presence of calcium hydroxide was studied using conventional and rotary furnaces. The objective was to assess the behaviour of Verdete, a mixture of micas and K-feldspar, in response to reaction with calcium hydroxide to recover potassium-bearing soluble species. The hydrothermal procedure generated Ca-, Si-and Al-bearing insoluble products with defined crystalline structure (hydrogrossular and tobermorite), resulting from the breakdown of K-feldspar. The use of citric acid as extracting agent led to potassium recoveries up to 300% greater than in cases where the extracting agent was water, due to the formation of an insoluble and amorphous layer (containing mostly K, Mg and Fe) between Verdete and the alkaline solution. Altered feldspar, as well as possibly potassium-substituted tobermorites, may have the potential to release potassium (and other elements) in the long term, while the amorphous layer is responsible for faster release in the short term.

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Roasting-leaching experiments on glauconitic rocks of Bakchar ironstone deposit (Western Siberia) for evaluation their fertilizer potential

Cited by 14 publications

References 35 publications

Mechanochemical Preparation of Slow Release Fertilizer Based on Glauconite–Urea Complexes

Mechanochemical Preparation of Slow Release Fertilizer Based on Glauconite–Urea Complexes

Reutilization Prospects of Diamond Clay Tailings at the Lomonosov Mine, Northwestern Russia

Potassium-bearing species in fertiliser obtained by hydrothermal modification of glauconitic siltstones with calcium hydroxide

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