Deep conversion and metal content of Russian coals

Bazhin, V. Yu.; Белоглазов, И. И.; Feshchenko, R. Yu.

doi:10.17580/em.2016.02.07

Cited by 9 publications

(5 citation statements)

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“…Finally, the document citation network highlighted [60][61][62][63][64] as the most cited documents, all of them are journal articles except the first one. It also revealed the lack of promptness in the research in PF and mining since only two authors within the corpus have more than 1 document; therefore, the most cited documents are, in turn, those of the most cited authors.…”

Section: Discussionmentioning

confidence: 99%

“…Thus, the difficulties of raising resources and achieving financial viability are seen. Difficulties that, however, are not generalized but are already expressed in [62] and it is widely recognized; they are concentrated in small and medium-sized mining companies [54,60,70,73,87]. In this regard [54,70] show insufficient financing for the prospecting and exploration stages compared to the others and the small ones compared to the large ones.…”

Section: Cluster Analysismentioning

confidence: 99%

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Towards an Understanding of Project Finance in the Mining Sector in the Sustainability Context: A Scientometric Analysis

2021

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The purpose of this study is to analyze the extant literature on Project Finance (PF) with a comprehensive understanding of the status quo and research trends in the mining industry. Thus, this study utilizes a scientometric review of global trends and structure of PF and mining research from 1977 to 2020 using techniques such as co-author, co-word, co-citation, and cluster analyses. A total of 80 bibliographic records from the Scopus database were analyzed to generate the study’s research through scientometric networks. The findings indicate a steady growth of the research field, which includes Environmental, Social, and Governance criteria. The most significant contributions have originated mainly from the United States, Australia, the United Kingdom, and South Africa. The main research trends identified several issues related to risk, management, and financing concerns. This study provides researchers and practitioners with a comprehensive understanding of the status quo and research trends of ontology research within PF in the mining context and promotes further studies in this domain.

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Section: Discussionmentioning

confidence: 99%

Section: Cluster Analysismentioning

confidence: 99%

Towards an Understanding of Project Finance in the Mining Sector in the Sustainability Context: A Scientometric Analysis

2021

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“…Waste from the extractive coal industry is used in the agricultural sector due to the uniqueness of its chemical composition [45,46]. The prospects for creating soils based on brown coal waste are reflected in the works of teams from Russia [47][48][49], Belarus [50], India and China [51], as well as from South Korea [52].…”

Section: Petersburg and The Ministry Of Construction And Housing And ...mentioning

confidence: 99%

Artificial soils for restoration of disturbed land productivity

Smirnov¹,

Suchkov²,

Danilov³

et al. 2021

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“…HAFA is a promising raw material for alumina production [4] due to the limited reserves of bauxite located in China [5]. However, alumina content in the typical ash is about 25-30% [6], while silica is more than 50%.…”

Section: Introductionmentioning

confidence: 99%

Kinetics Study of Al Extraction from Desilicated Coal Fly Ash by NaOH at Atmospheric Pressure

2021

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The most promising source of alumina in the 21st century is the coal fly ash (CFA) waste of coal-fired thermal plants. The methods of alumina extraction from CFA are often based on the pressure alkaline or acid leaching or preliminary roasting with different additives followed by water leaching. The efficiency of the alumina extraction from CFA under atmospheric pressure leaching is low due to the high content of acid-insoluble alumina phase mullite (3Al2O3·2SiO2). This research for the first time shows the possibility of mullite leaching under atmospheric pressure after preliminary desilication using high liquid to solid ratios (L:S ratio) and Na2O concentration. The analysis of the desilicated CFA (DCFA) chemical and phase composition before and after leaching has been carried out by inductively coupled plasma optical emission spectrometry (ICP-OES) and X-ray diffraction (XRD). The morphology and elemental composition of solid product particles has been carried out by scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDX). An automated neural network and a shrinking core model (SCM) were used to evaluate experimental data. The Al extraction efficiency from DCFA has been more than 84% at T = 120 °C, leaching time 60 min, the L/S ratio > 20, and concentration of Na2O—400 g L−1. The kinetics analysis by SCM has shown that the surface chemical reaction controls the leaching process rate at T < 110 °C, and, at T > 110 °C after 15 min of leaching, the process is limited by diffusion through the product layer, which can be represented by titanium compounds. According to the SEM-EDX analysis of the solid residue, the magnetite spheres and mullite acicular particles were the main phases that remained after NaOH leaching. The spheric agglomerates of mullite particles with non-porous surface have also been found.

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Deep conversion and metal content of Russian coals

Cited by 9 publications

References 0 publications

Towards an Understanding of Project Finance in the Mining Sector in the Sustainability Context: A Scientometric Analysis

Towards an Understanding of Project Finance in the Mining Sector in the Sustainability Context: A Scientometric Analysis

Artificial soils for restoration of disturbed land productivity

Kinetics Study of Al Extraction from Desilicated Coal Fly Ash by NaOH at Atmospheric Pressure

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