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A case study of enhanced flotation of coal gasification fine slag by multiple compound collectors Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-04-18 Cuiling Ye, Feng Wu, Yijiang Li, Hongxin Qiu, Yanfeng Li
The flotation mechanism of multiple compound collectors called ZKC-I for coal gasification fine slag (CGFS) was revealed from the flotation kinetics, adsorption properties, bubble–particle interact...
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Deep learning with TabNet: rapid coal ash content estimation via X-ray fluorescence Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-04-15 Maiqiang Zhou, Zhiping Wen, Ge Xu, Zipeng Zhang, Changchun Zhou
As a paramount index of coal quality, the quick and accurate prediction of ash content bears substantial significance for the coal preparation plant. In this study, an innovative approach that inte...
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Research status and development trend of ultra-low ash coal preparation technology Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-04-15 Xiaoman Chai, Yutong Jiao, Wen Fan, Feishuo Jiao, Bo Lv, Xiaowei Deng, Chaojun Fang, Baolin Xing
Coal is the main source of energy in our country, and its role in the economic development is extremely important. However, with the development of economy, the dependence on coal is becoming stron...
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Binding mechanism in bio-briquette prepared with wheat straw and lignite by mechanical thermal expression process Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-04-14 Lei Xiao, Yunjiao Yang, Rui Wang, Xiujuan Feng, Jinghua Yao
In this study, bio-briquette was prepared with lignite and wheat straw by mechanical thermal expression (MTE) process and analyzed using an optical microscope (OM), scanning electron microscope (SE...
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Analysis of temperature rise of low temperature adiabatic oxidation of sulfur-containing “coal-like substances” Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-04-14 Yanrui Guo, Xiaogang Mu, Cunbao Deng, Hongfei Duan, Ling Qiao, Qianru Du, Peng Jing
Spontaneous combustion of coal is one of the main natural disasters in the process of coal mining, and spontaneous combustion of sulfur-containing coal is an urgent problem to be solved. In order t...
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Studies on sulfur liberation characteristics of Pakistani high sulfur low-rank coal using Hardgrove grinding Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-04-14 Fida Hussain Channa, Sultan Ahmed Khoso, Suhail Ahmed Soomro, Muhammad Aslam Uqaili
Coal remains the backbone of developing countries’ energy needs and economic development. Coal with improved quality standards is in high industrial demand as it emits minimal CO2, NOx, and SOx. Th...
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Cleaning of fine-grained lignite by two-stage hydrophobic flocculation using different waste oils Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-04-14 Mohamed Taha Osman Abdelraheem, Osman Agca, Tevfik Agacayak, Selma Duzyol
In this study, the conditions for obtaining clean coal from fine-grained lignite suspensions by two-stage hydrophobic flocculation using different waste oils were investigated. Waste vegetable oil,...
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Experimental study on ash reduction by classification flotation Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-04-14 Bochao Li, Xiaodong Yu, Kaiming Zhang, Yingjie Yuan, Nianzhou Dou
Poor endowment conditions, with abundant reserves of high-impurity and low- quality coal resources, characterize the coal resources in our country. As the primary source of carbon emissions, the co...
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Estimation of gross calorific value of coal: A literature review Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-04-14 Lethukuthula Vilakazi, Daniel Madyira
The gross calorific value (GCV), also known as the higher heating value (HHV) of coal is the amount of heat emitted upon complete combustion of coal. The GCV of coal is used to estimate various tec...
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Prediction of HGI of South African coalfields: a comparative application of ANN, SVR and LSTM models Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-04-09 Abiodun Ismail Lawal, Samson Oluwaseyi Bada, Moshood Onifade
Hardgrove grindability index (HGI) is a significant index used to determine a mill’s capability and overall efficiency in the grinding of coal. There are several factors that affect HGI due to the ...
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Numerical simulation and optimization of the multi-stage air/gas supply system in a coke oven battery with 7.1 m coking chambers Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-04-09 Ruobing Yan, Yanjun Liu, Chengwu Dai, Sheng Wu, Haijiang Tian, Yueyue Li, Chengpeng Xiang, Leping Dang, Hongyuan Wei
3-D numerical simulations based on diffusion combustion technology were employed to optimize the multi-stage air/gas supply system in a coke oven battery with 7.1 m coking chambers. In the heating ...
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Leaching mechanism of SiO2 in activated kaolinite clinker with low modulus sodium silicate solution Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-04-09 Peng Wang, Tiangui Qi, Xiaobin Li, Yilin Wang, Leiting Shen, Guihua Liu, Zhihong Peng, Qiusheng Zhou
Preparation of high modulus solution and high Al/Si residue via leaching SiO2 is a key for large amount utilization of coal gangue based on ferric oxide assisted roasting – alkali leaching silica p...
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Thermal imaging identification of coal and rock in northern China under thermal excitation——experiment and theoretical model Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-04-09 Wenhua Yi, Shanjun Liu, Chao Zhang, Ruibo Ding, Haoran Wang
The identification of the coal and rock is an important part in the process of coal preparation. Thermal imaging is an effective way to identify coal and rock. However, the current research lacks i...
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Bubbling fluidized bed and oven drying for Turkish coal: a comparative study Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-04-02 Mahmut Suat Delibalta
The aim of this study is to compare the changes in the heating value of Turkish coal (Konya-Ilgın) with bubbling fluidized bed drying (BFBD) and oven drying (OD). The changes mentioned at three dif...
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Studies on increased utilization of high-ash Indian coal in coke-making Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-04-01 Kashi Nath Malik, Satadal Ghorai, Arup Kumar Mandal
Due to low-ash coking coal scarcity, India depends on high-cost imported coal for coke making. The present work aims to increase the Indian coal input in the original coal blend for coke making. On...
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Fragmentation energy calculation model of coal crushed by impact load Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-03-31 Lihai Tan, Xiaohan Yang, Ming Qiao
Rock fragmentation is a common physical and mechanical phenomenon that exists in a variety of ranges from the mining and processing. Communication is an important operation in coal processing where...
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Mechanism of enhanced microfine low-rank coal flotation by jet slurry conditioning Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-03-23 Zeyu Liu, Yuping Fan, Xiaomin Ma, Xianshu Dong, Maoqing Yang
Microfine low-rank coals are subject to metamorphic changes that hinder their floatability, impeding their clean and efficient utilization. The objective of this study was to refine the jet-slurry ...
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Detection of coal gangue by YOLO deep learning method based on channel pruning Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-03-23 Deyong Shang, Zhibin Lv, Zehua Gao, Yuntao Li
Rapid and accurate identification of coal and gangue is of great significance to improve sorting efficiency and reduce environmental pollution. Image recognition based on deep learning is the curre...
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Implementation of Taguchi method, ANOVA and regression analyses to enhance char yield by carbonization in lignite-biomass blended Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-03-22 Aydan Aksoğan Korkmaz, Yeliz Toptaş
Energy is a basic need for modern societies. Renewable energy refers to producing and using energy without harming the environment and without consuming resources. The transition to renewable and s...
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Assessment and modeling of benzene micropollutant in surface waters proximal to coal-fired thermal power plants Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-03-21 Özgül Çimen Mesutoğlu, Oğuzhan Gök
Micropollutants of priority have gained significant attention due to their rising concentrations and persistence in aquatic environments. Among these significant micro-pollutants is benzene, releas...
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The impact of metal ions on flotation of coal gasification fine slag: an experimental study Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-03-20 Xiangyun Sun, Qifa Lu, Jiakun Tan, Long Liang, Haiyang Gao, Guangyuan Xie, Yaoli Peng
This study investigates the flotation performance of coal gasification fine slag in the presence of metal ions with different valences. The impact of metal ions on the surface topography, wettabili...
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Prediction of ash content in coal slime flotation based on CNN-BP method with residual estimation Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-03-20 Qinshan Liu, Lanhao Wang, Yaowen Xing, Yu Han, Jincheng Liu, Shiqi Dai, Gang Yu, Xiahui Gui
Ash content is a key metric for assessing coal slime flotation performance. Traditional methods of sampling, combustion, and weighing lead to measurement delays, thus image-based real-time ash pred...
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A fast gangue detection algorithm based on multi-head self-attention mechanism and anchor frame optimization strategy Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-03-18 Ruxin Gao, Haiquan Jin, Jiahao Chang, Xinyu Li, Qunpo Liu
Because of the problem of difficult identification, model acceleration, and localization for coal gangue detection, a fast coal gangue detection algorithm based on a multi-head self-attention mecha...
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Effects of composite structures on internal flow field and particle classification performance of hydrocyclone Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-03-17 Zhitao Liang, Feng Li, Yanchao Wang, Hu Han, Xiangfei Ji
Hydrocyclones are commonly used solid – liquid separation apparatuses extensively adopted in various sorting industries owing to their unique advantages. However, the intrinsic constraints of their...
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Enhanced coarse coal slime separation in a gravity–flotation coupled separator with up-flow feeding and dual-concentrate Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-03-15 Canjin Luo, Lei Tian, Zihao Zhao, Hongli Yang, Minqiang Fan
A gravity – flotation coupled separator with up-flow feeding and dual-concentrate was developed to improve the recovery and selectivity in coarse coal slime separation. The separator combines flota...
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Methods for obtaining humate-containing fertilizers from brown coal Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-03-14 Bekzhan Omarov, Kurmanbek Zhantassov, Manap Zhantassov, Kamilya Kirgizbayeva, Zhaxylyk Altybayev
The purpose of the study is to examine the main methods of obtaining fertilizers and optimizing processes. Using methods of analysis, comparison, and experimentation, three main approaches to obtai...
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Study on the effect of flow field optimization on flotation efficiency Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-03-03 Xiaodong Yu, Bochao Li, Fusheng Niu, Jinxia Zhang, Zhenjia Chang, Liyong Wei, Shunzeng Tong
With the help of computational fluid dynamics (CFD) methodology, the Eulerian model was used for numerical simulation of XFD type flotation machine. By altering the flow field pattern, analyzing th...
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The influence mechanism of ionic liquids on the ash melting and combustion characteristics of Zhundong high-alkali coal Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-02-28 Mingrui Zhang, Junwei Guo, Shaoyu Yao, Guangjian Ren, Ziyi Guo, Guanghui Yan, Bo Zhang
This study investigated the ash reduction and quality improvement effects of four types of ionic liquids on Zhundong high-alkali coal, focusing on the evolution laws of coal ash melting and combust...
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Discrete element simulation study on the screening effect of composite vibrating screen for coal particles Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-02-28 Huarui Yang, Xuedong Ma
To strengthen the layering effect of coal particles on the screen surface and improve the screening efficiency, a composite vibrating screen was proposed based on the void filling effect of mixed p...
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Polyaspartic acid, an eco-friendly regulator for the improvement of coking coal flotation: applications and mechanism Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-02-27 Zhanglei Zhu, Bohui Zhao, ChengChi Tian, Qiuyue Sheng, Zhen Li, Ningning Zhang, Jizhen Wang, Xiaohui Yang
In this study, a novel approach is to apply polyaspartic acid (PASP) as an eco-friendly regulator for the flotation of coking coal, which is different from the conventional use of oil collectors on...
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Research on spontaneous combustion characteristics and high temperature point prediction method of rectangular coal pile Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-02-26 Ju Zhao, Ran Meng, Shaoqiang Yuan, Baoyuan Wang
In order to prevent and control the spontaneous combustion phenomenon of rectangular coal pile under the coal storage and transportation scenario, the spontaneous combustion process of rectangular ...
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Optimization of specific energy consumption in the high concentration slurry disposal pipelines for coal ash in thermal power plants Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-02-26 Ankit Prakash, A. K. Upadhyay, Anubhav Rawat
In thermal power plants, the disposal of coal fly ash is one of the major challenges requiring energy input for its safe disposal, so optimization is needed to minimize the required energy input at...
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Effect of mixed collector on the LRC flotation: an experimental and molecular dynamics simulation study Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-02-25 Lu Wang, Jihui Li, Binghan Wen, Liqiang Ma
To investigate the mechanism underlying the effect of mixed collector (MC) composed of diesel and span-80 on LRC flotation, a combination of experimental and molecular simulation approaches was emp...
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Enhanced flotation separation of low-rank coal by using polar/nonpolar binary compound collector Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-02-23 Zhigang Xue, Yangchao Xia, Pengcheng Qu, Yaowen Xing, Xiahui Gui
The surface hydrophobicity of low-rank coal is meager, hindering the efficient adsorption of hydrocarbon oil on its surface. Consequently, the hydrophobicity modification of the coal surface is adv...
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Demineralization of fine and ultrafine coal particles of Talcher area by oil agglomeration technique Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-02-16 Brahmotri Sahoo, Mitali Gouda, Chandradhwaj Nayak
The costs of fine coal cleaning cannot surpass the fetched recuperation within the included clean coal to be financially practical. In this present study, percentage of ash and yield of the agglome...
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Co-gasification of coal and biomass: synergistic effects on gasification reactivity induced by inherent organic components Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-02-14 Wenjian Zhang, Wenyu Li, Zhusen Wu, Xueting Yang, Jiahao Hu, Yawei Su, Pei Li, Xiao Li
It is widely recognized that the synergistic effects during co-gasification process of coal and biomass are caused by the inherent alkali/alkaline earth metals (AAEM). However, the compositions of ...
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Coal quality enhancement by using bio extracts of carissa carandas fruits in combination with Hydro Fluoric acid Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-02-14 Gangadhara Reddy Ulavapalli, Rambabu Koyilapu, T. Gouri Charan, V. Murali Krishna, G. V. Subba Reddy
This paper addresses the imperative need for environmentally sustainable beneficiation technologies tailored for low-rank coals, constituting about 50% of global coal deposits. The focus is on rece...
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Research on Dual GRU model driving by time series alignment for multi-step prediction of ash content of dense medium clean coal Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-02-08 Jun Wang, Ranfeng Wang, Xiang Fu, Kai Wei, Jie Han, Qian Zhang
Dense medium cyclone separation is a widely used coal processing method. However, duetween the ash content measurement and the other sensors. However, existing studies either do not consider the im...
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Comparative investigation of spontaneous combustion of biomass, hydrochar, coal and their blends using Wits-Ehac and thermogravimetric analysis Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-02-08 Ethel Tsholofelo Matsobane, Moshood Onifade, Bekir Genc, Samson Bada
Biomass, hydrochar, coal and hydrochar/coal blends have been proposed as alternative energy sources to coal. Given that the new fuels are derived from biomass, which is highly reactive, it is neces...
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Intensification of flotation separation process of residual carbon from coal gasification fine slag using ultrafine carbon particles conditioning Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-02-02 Yannan Liang, Hainan Wang, Ruifeng Chen, Danlong Li, Quanzhi Tian, Lei Li, Haijun Zhang
Coal gasification fine slag (CGFS) is a high-ash product with high content of residual carbon. Flotation is a common method to separate residual carbon from CGFS. However, conventional flotation is...
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Influence of coal quality on the tendency for slagging formation on a spreader stoker boiler Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-01-29 Stefany Saenz Prado, Albio de Jesús Gutiérrez Amador, Jaime José Acuña Polanco
During the combustion of solid fuels in power generation systems, one of the biggest problems related to ash is the surface deposition and accumulation of molten or sintered slag, commonly known as...
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Enhancement of magnetic activation on the backfilling performance of coal gangue-based composite materials Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-02-02 Yanqing Guo, Weigang Zhang, Yueqin Qiu, Zhihui Shen
The large accumulation of coal gangue has resulted in significant environmental contamination and detrimental impacts. Utilizing it as a filler material in coal mining operations may successfully a...
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The use of petroleum derivative mixtures as bridging liquid for oil agglomeration of lignite coal Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-01-30 Özlem Kaya, Neriman Taşdöğen Cebe
The aim of the present study was to investigate the use of mixtures of petroleum derivatives as bridging liquids for oil agglomeration of Sivas/Gemerek lignite coal. The study investigated the effe...
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Study on impact mechanical characteristics and screening performance of fine coal during flip-flow screening process Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-01-30 Xu Hou, Pengfei Mao, SongXue Zhang, Jiahao Pan, Chen Wang, Yuemin Zhao, Weinan Wang, Chenlong Duan
Screening is a key link in the coal preparation, and flip-flow screening is the important method for achieving efficient classification of fine coal. During screening, the mechanical response of th...
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Predicting the ash content in coal flotation concentrate based on convolutional neural network Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-01-24 Zhicheng Liu, Longjiang Li, Jiang Zeng, Yalan Wang, Jian Yang, Xiang Liu
Convolutional neural networks (CNNs) are currently one of the most popular image classification technologies. Their excellent image classification ability enables the prediction of the ash content ...
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Influence of particle size gradation on the preparation of highly concentrated coal-water slurry and the development of a gradation model Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-01-24 Cheng-Li Wu, Li-Rui Mao, Xu-Long Ma, Jian Li, Fa-Cun Jiao, Han-Xu Li
Aiming at the problem that low-rank coal is unsuitable for making CWS (coal-water slurry) and lacks an accurate particle size gradation prediction model. This paper expounds on the effects of ball ...
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Flotation and oil agglomeration of high ash LVMC coal after deshaling by jigging: a comparative study using different collectors Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-01-21 Piyush Malhotra, Bivas Kumar Pradhan, Nikkam Suresh
LVMC coal with an ash content of 38.70% was initially crushed to −4.0 to +0.50 mm and deshaled using a laboratory model Batac Jig. The resulting concentrate was further size reduced to −0.50 mm and...
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Research on the process of coal’s pores and fissures splitting during liquid nitrogen freeze-thaw action Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-01-19 Shuaiqi Dong, Dong Zhao, Jingyu Jin, Juan Wang
A clean and effective unconventional fossil fuel is coalbed methane (CBM). The development of CBM is essential to reducing the lack of oil and gas resources, preventing coal mine gas mishaps, and s...
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Impact and potential of carbon sequestration and utilization: fundamentals and recent developments Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-01-19 Arnab Mondal, Soumitra K Gupta, Shaurya Yaduvanshi, Muhammad Khan, Samar Layek, Vamsi Krishna Kudapa, Surajit Mondal
Carbon dioxide is a primary greenhouse gas that plays a vital role in shaping life on Earth. However, the continuous anthropogenic emissions of CO2 at prominent levels have caused severe damage to ...
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Influence mechanism of small molecular organics on the wettability of coal Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-01-19 Huaijun Ji, Zebin Wang, Yi Hou, Yunzhuo Li, Yue Wang
The investigation into the impact of small molecular in coal on its wettability holds significant importance in the field of coal dust control. In this study, eight coal structure models with diffe...
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Influence of oil film on the interaction between bubble and bubble/lignite particle Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-01-19 Chunyun Zhu, Lijuan Sun, Ming Li, Guosheng Li, Yaowen Xing, Xiahui Gui
The floatability of low-rank coal is poor because of its low metamorphosis, and the oily bubble flotation is an effective means to collect coal particles. In this paper, adhesion angles and forces ...
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Heat and mass transfer analysis of coal coking process in the coking chamber Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-01-14 Kaiming Xiao, Xunliang Liu, Huibiao Hu, Zhi Wen, Goufeng Lou
To study the coking heat mass transfer process and reveal the law of industrial-scale coal pyrolysis, the heat transfer characteristics of coal material in the coking process are analyzed based on ...
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Coal middling retreatment using high voltage pulses technique: selective liberation mechanism Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-01-07 Xiaodong Huo, Luokang Dong, Weiran Zuo, Wei Huang
With combined efforts from the mineral liberation analyzer (MLA), elementary analysis and sulfur speciation analysis, this study expands upon coal fragmentation using high voltage pulse (HVP) by in...
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SBSNet: selective branch segmentation network of coal flotation froth images Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-01-08 XianWu Huang, ZiHao Wu, HaiLi Shang, JinShan Zhang, Zhao Cao
Flotation is a physical and chemical process that uses the difference between mineral surface properties to separate valuable minerals from worthless minerals through the attachment of bubbles. The...
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Detection of coal gangue based on spectral technology and enhanced lightweight YOLOv7-tiny Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-01-07 Pengcheng Yan, Wenchang Wang, Guodong Li, Yuting Zhao, Jingbao Wang, Ziming Wen
Underground coal gangue sorting is a critical component of modern intelligent coal mining, holding significant importance for the preservation of natural resources and the ecological environment. T...
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Study on density distribution characteristics and fine coal separation of magnetically fluidized beds of microfine particles Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-01-04 Shulei Song, Xuan Xu, Yakun Tian, Zengqiang Chen
In this paper, the characteristics of the axial and the radial density distribution and the density stability of a gas-solid fluidized bed formed by microfine magnetite powder were studied under di...
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Flotation behavior and kinetic characteristics of trace elements in coal Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-01-04 Cheng Liu, Xin Long, Shanshan Cao, Mengcheng Tang, Jinhe Pan, Ningning Zhang, Longfei Cong, Binbin Qian, Zhiping Wen, Changchun Zhou
Flotation is considered as an efficient method for removing hazardous trace elements from coal. However, the flotation kinetic characteristics of trace elements in coal are still missing. This rese...
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Lightweight coal and gangue detection algorithm based on improved Yolov7-tiny Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-01-04 Zhenguan Cao, Zhuoqin Li, Liao Fang, JinBiao Li
This paper proposes a lightweight coal and gangue detection algorithm based on Yolov7-tiny for the current target detection algorithms, which have problems such as large model computation, low dete...
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Impact of anthracite blending and SDS addition on slurryability and stability of Indian high ash coal water slurry Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-01-04 Akash Pandey, Dulari Hansdah, Satish Kumar
The conventional modes of transporting coal frequently result in substantial fiscal challenges and environmental deterioration. Slurry-based hydraulic transportation of coal through pipelines has p...
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Extraction of valuable critical metals from coal gangue by roasting activation-sulfuric acid leaching Int. J. Coal Prep. Util. (IF 2.1) Pub Date : 2024-01-04 Chao Kang, Shengchao Yang, Jinpeng Qiao, Yuqian Zhao, Sheng Dong, Yanze Wang, Chenlong Duan, Jianrong Liu
Coal gangue is a bulk industrial solid waste produced in the process of coal mining and washing, with the dual attributes of resourcefulness and hazardousness. It can be used as a reserve resource ...