OOIR: Observatory of International Research

Papers

(The TQCC of International Journal of Coal Preparation and Utilization is 3. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2021-04-01 to 2025-04-01.)

Article	Citations
SKL-YOLOv8s: an object detection method for coal gangue flow	31
Role of capillary pressure on carbon dioxide sequestration: mathematical analysis	30
Co-gasification of coal and biomass: synergistic effects on gasification reactivity induced by inherent organic components	25
Extraction of lithium from coal gangue by a roasting-leaching process	23
Resource and recycling: a comprehensive review of India’s coal landscape, characterization, and the current to future potential of fly ash from thermal power plants	22
Prediction of gross calorific value as a function of proximate parameters for Jharia and Raniganj coal using machine learning based regression methods	22
Targeting ash generated from coal combustion as secondary source of rare earth elements	22
An integrated method for massive production of graphene from bituminous coal via ultrasonication-assisted emulsion formation	21
Mechanism of enhanced microfine low-rank coal flotation by jet slurry conditioning	18
Flotation behavior of metallurgical coals from different seams under electrolytic process water	18
Investigation on pH influence for the effective transportation of coal water slurry using experimental design	16
Investigations of coal beneficiation by using choline chloride and urea-based deep eutectic solvent	16
Influence of synergistic effect of polyacrylamide and surfactant on dewatering performance of flotation clean coal	16
Investigation of removal of ash and sulfur from Kangal (Sivas/Turkey) lignite with the application of combined methods	15
Facile application of used engine oil in high sulfur coal briquetting to reduce the hazardous emission gases	15
Alkali leaching in dissolved oxygen for efficient desulphurization of low-grade Lakhra coal	15
Comparison of flotation kinetics between conventional and home-designed turbulent microbubble flotation cell	14
Numerical modelling of two-phase flow hydrodynamics of column flotation - validation against ERT data	13
Optimization of extrinsic parameters for beneficiation of coal with the help of Cronobacter sp	13
Natural gums as a novel, potent, and natural additive towards coke making: a preliminary feasibility study	12
Experimental analysis of vibratory screener efficiency based on density variation for screening coal and iron ore	12
Application of suitable methodology for control of coal fire according to its magnitude in hot strata blast-holes–an approach	12
Evaluation of single particle drying characteristics using drying models and curve fitting	12
Preparation of formed-coke using devolatilized inferior coal and its mechanical properties	11
Optimizing ash content detection and prediction in flotation tailings using a new approach to enhance feature extraction and deep learning algorithms	11

An efficient method for recognition of coal/gangue with thermal imaging technique	11
Assessment of coal sortability and washability using dual energy X-ray transmission system	11
Role of collector polarity and size on the low-rank fine coal flotation	11
Study on microscopic pores and permeability changes of coal frozen by liquid nitrogen based on CT scanning	10
Hyper-coal as Binder for Coking: —Macroscopic Caking Property, Microstructure Basis and Extraction Temperature Optimization Index	10
Enhancement of calorific value and dispersion stability of coal-water-oil slurry by discharge plasmas: application of high voltage discharge and dielectric barrier discharge	10
Recovery of clean coking coal from difficult-to-wash low volatile coking coal fines of Jharia coalfield by multi gravity separator	10
A high accuracy detection method for coal and gangue with S3DD-YOLOv8	10
The improvement in the quality of 6–0 mm low-grade high-sulfur lignite via a compound dry separation bed	10
An identification and positioning method for coal gangue based on lightweight mixed domain attention	10
Study on orthogonal experiments in synergistic ultrasound-assisted adsorption of Cu ²⁺ by thermal modified fly ash	10
Pyrolysis characterization and kinetic analysis of typical coals in western China: effects of coal type, particle size and heating rate	9
Extraction of lithium from coal gangue acid leaching solutions via co-precipitation	9
Flotation performance and flow characteristics of a novel two-stage turbulent micro-bubble cell for fine particle recovery	9
Study on adsorption mechanism of ethyl acetate by high alumina fly ash: modeling and experiment	9
Copper-based catalysts for improved humic acid yield and hard-water resistance in lignite hydrothermal process	9
An improved cross algorithm edge detection method and its application in coal gangue identification	8
SHAP-based interpretation of an XGBoost model in the prediction of grindability of coals and their blends	8
Comparison of the prediction performance of separating coal in separation equipment using machine learning based cubic regression modelling and cascade neural network modelling	8
Effect of scrubbing medium’s particle size distribution and scrubbing time on scrubbing flotation performance and entrainment of microcrystalline graphite	8
Lightweight detection method of coal gangue based on multispectral and improved YOLOv5s	8
Methods for obtaining humate-containing fertilizers from brown coal	8
Determination of washability characteristics of anthracite coal by index of washability and near gravity material index – a case study	8
Study on matching of dispersant for high concentration and high stability slurry from Shenhua nonstick coal	7
Drying Characteristics and Kinetics Behavior of Indian Coal Slurries Using Natural Draft Tray Dryer	7
Selective flotation of coal from kaolin using sodium polyacrylate as flocculant and depressant	7
Influence mechanism of small molecular organics on the wettability of coal	7
Mechanisms of roasting for improving rare earth element leaching from coal gangue	7
Performance evaluation and optimization of geopolymer parameters for bricks fabricated using municipal waste byproducts and coal ash	7
Processing of low-grade Indian coking coal using air fluidized dense medium bed separator and flotation technique	7
Formation path and kinetics of caking components from modified lignite in subcritical H ₂ O–CO system	7
Novel evaluation index for assessing the flotation performance of oily collectors in coal processing	7
Detection of coal gangue based on spectral technology and enhanced lightweight YOLOv7-tiny	7
Study on the differential effects of various hydrocarbon oil components on coal slime flotation performance	7
Investigation of the interference between organic and mineral matter in coal and carbonaceous shale using FTIR spectroscopy	7
Detecting coal-carrying rate in gangue based on binocular machine vision and particle queuing method	6
Formation of pyrite in the process of fine coal desulfurization by microwave enhanced magnetic separation	6
Comparative investigation of spontaneous combustion of biomass, hydrochar, coal and their blends using Wits-Ehac and thermogravimetric analysis	6
Study on the separation of lithotypes and their properties: A case study in the Permian period coal of the Dahebian coal mine, Liupanshui coalfield, China	6
Synthesis and kinetic analysis of zeolites based on fly ash	6
Effect of different mass proportions of fine slime on the flotation performance of coal	6
Effects of composite structures on internal flow field and particle classification performance of hydrocyclone	6
Evolution and mechanisms of low-temperature oxidation and coal–oxygen coupling processes of a specific low-rank bituminous coal with various microscale particle sizes	5
Optimization of hydrogen peroxyl-citric acid system for sulfur removal from high sulfur bituminous coal by response surface method and its mechanism	5
Product quality prediction in dense medium coal preparation process based on recurrent neural network	5
Research on the process of coal’s pores and fissures splitting during liquid nitrogen freeze-thaw action	5
Effects of rotary triboelectrification technology on macerals separation for low-rank coal	5
Coal biotransformations under aerobic conditions: screening and characterization of potential biocatalysts	5
Study on deashing and desulphurization of coal with heavy medium in enhanced gravity field	5
A characterization of rare earth elements in coal ash generated during the utilization of Australian coals	5

Study on the impact of APAM residue on the settlement characteristics of coal slurry agglomerates	5
The effects of the height-to-width ratio of the rectangular inlet on the flow field and separation performance by hydrocyclone	5
Preparation of high concentration coal water slurry with good fluidity based on preferentially modified ultrafine particle under three-peak grading	5
An experimental investigation of early warning index for coal spontaneous combustion with consideration of particle size: a case study	5
Image-based rock mixing ratio estimation by using illuminance analysis in underground mining	5
New approach to evaluate the wettability of low-rank coal powders based on multiple light scattering	5
Evolution of coal flocs during flocculation under different stirring velocities	5
Composition and structural properties of coal gasification fine slag and its classified products – a case study	5
Drying kinetics and upgrading characteristics analysis of Zhaotong lignite with microwave deep drying	5
The application and challenges of spectral and image two-modal fusion techniques in coal gangue recognition	4
Thermo-kinetic analysis of co-pyrolysis of Platanus tree leaves with coals	4
Optimization of coal slime flotation in reflux flotation cell	4
Ultrasound-assisted leaching of rare-earth elements from coal gangue by betaine hydrochloride	4
Assessment on durability of lightweight concrete using alkali modified fly ash based atrificial coarse aggregate (FACA)	4
Extraction of clean coal from washery rejects and its effect on coking properties: an approach toward sustainable development	4
SBSNet: selective branch segmentation network of coal flotation froth images	4
A novel coal quality index and its estimation using diffuse reflectance spectroscopy	4
Influence of taper angle on the inner field and separation performance of a hydrocyclone	4
Assessment and characterization of waste material used as backfilling in an abandoned mine	4
Comparison and selection of flotation processes for the separation of fine and difficult-to-float coal particles	4
Investigation of co-combustion characteristics of olive bagasse, coal and their respective blends by thermogravimetric analysis (TGA)	4
Study of the flow characteristics of the dense bed and its enhancing effect on coal particles separation by CFD-DEM applied in Teeter bed separator	4
Regression modeling and residual analysis of screening coal in screening machine	4
Flotation and oil agglomeration of high ash LVMC coal after deshaling by jigging: a comparative study using different collectors	4
Coal free-swelling index modeling by an ordinal-based soft computing approach	4
Occurrence, mobility, leaching, and recovery of rare earth elements and trace elements in Sohagpur Coalfield, Madhya Pradesh, India	4
On the separation mechanism of high vibration frequency compound dry separator and multi-parameter optimization	4
Performance characteristics of 76 mm dense medium cyclone to wash high ash high NGM coal	4
Identification of the rank and kind of ten coals including bituminous and anthracite based on near-infrared spectroscopy and interpretable GASF-ResNet18 method	3
Effect of dilute acid on fulvic acid extracted from lignite	3
Superfine coal powder modified by amorphous silica and its high reinforcing performance in styrene butadiene rubber	3
Modeling of coal and gangue volume based on shape clustering and image analysis	3
Design development of coal-based fly ash geopolymer brick using orthogonal array design of experiment	3
Experimental analysis of coal gangue identification using visible-near infrared spectroscopy under different working conditions with local and global model	3
Past, present and future of Coal Bed Methane (CBM): a review with special focus on the Indian scenario	3
Synergistic effect of SPS compound surfactant and diesel oil on low-rank coal slime flotation	3
Impact and potential of carbon sequestration and utilization: fundamentals and recent developments	3
Intensification of flotation separation process of residual carbon from coal gasification fine slag using ultrafine carbon particles conditioning	3
Mechanism of interaction between mixed collectors and low-rank coal: An experimental and simulation study	3
Research of coal and gangue identification and positioning method at mobile device	3
Analysis of temperature rise of low temperature adiabatic oxidation of sulfur-containing “coal-like substances”	3
Mapping the knowledge domains of coal spontaneous combustion: an informetrics analysis-based study	3
Recognition of coal and gangue under low illumination based on SG-YOLO model	3
Coupling mechanism of trace elements and maceral in medium and high sulphur coal in the Jurassic terrestrial environment of Zhongyuan mine in the Hengshan mining area and adjacent areas	3
Usage of coke dry quenching dust to improve coke mean size	3
Exploration of innovative pathways for the preparation of ultra-clean coal from low-rank coal: a study on multi-stage flotation processes and mechanisms based on reagent synergy	3
A data expansion strategy for improving coal-gangue detection	3
Effective recovery of bitumen from Jordanian tar sand using several extraction methods	3
The influence mechanism of ionic liquids on the ash melting and combustion characteristics of Zhundong high-alkali coal	3
Exploration on performance of the oxidized collector in the low-rank coal flotation	3
Dielectric properties of organic sulfur components and application in coal microwave desulfurization	3
Microwave digestion method for sulfide analysis of Çanakkale region coal	3
A fast gangue detection algorithm based on multi-head self-attention mechanism and anchor frame optimization strategy	3
A comparative study on the industrial flotation performance of fine coal using conventional and turbulent microbubble mechanical flotation cells	3
Following performance of solid particle and liquid phases inside a hydrocyclone	3
Product specification and economic benefit maximization prediction model of a coal preparation plant in Datong, Shanxi	3
Surface properties of oxidized lignite and its application in congo red dye adsorption	3
Gangue recognition based on Gangue-GAN enhanced optimization	3
Synergistic enhancement of dewatering of montmorillonite-containing coal slime by novel combined filter aid: an experimental and simulation study	3
Coal characterization and occurrence of rare earth elements in coal and coal-ash of Sohagpur Coalfield, Madhya Pradesh, India	3
Study on pyrolysis characteristics of gonghe oil shale using Py-GC/MS at different temperatures	3
Differences in humic acid structure extracted from different types of peat	3
Numerical simulation and optimization of the multi-stage air/gas supply system in a coke oven battery with 7.1 m coking chambers	3
Separation performance of –0.5 mm fine coal in enhanced gravity field before and after desliming	3
Ultrasonic extraction of oil shale bitumen and study of its structural features using GC-MS and NMR techniques	3
Beneficiation of difficult-to-wash Indian low volatile coking coal fines by Falcon concentrator	3
Upgrading of low-grade lignite using the multi-layer reverse cross-flow drying bed	3
Lightweight coal and gangue detection algorithm based on improved Yolov7-tiny	3
Studies on increased utilization of high-ash Indian coal in coke-making	3
CO ₂ sequestration and CH ₄ extraction from unmineable coal seams in Singrauli coalfield	3
Mechanism of sulfur removal from high sulfur coal by visible light assisted oxidation system	3
Flue gas purification from SO2 and NOx using molten mixture of alkali metal carbonates	3
Optimizing the rheological performance of coal water slurry: investigating particle size distribution at higher concentrations	3
Fragmentation energy calculation model of coal crushed by impact load	3
Heat and mass transfer analysis of coal coking process in the coking chamber	3
Eco-sustainable alkali activated brick using municipal incinerated ash	3