Article
Engineering, Multidisciplinary
Muhammad Sajid, Ghulam Bary, Muhammad Asim, Riaz Ahmad, Muhammad Irfan Ahamad, Hammad Alotaibi, Adnanul Rehman, Ilyas Khan, Yin Guoliang
Summary: Phosphorite mineral is a crucial source of phosphorus with applications in agriculture, pottery, and animal feed. The quality of phosphorite is influenced by various factors, and beneficiation is key to exploring medium to low grade reserves. Different techniques like flotation, direct carbonation, and bioleaching have been explored for improving phosphorite quality.
ALEXANDRIA ENGINEERING JOURNAL
(2022)
Article
Engineering, Chemical
Kanat Chokin, Abdraman Yedilbayev, Vladimir Yugai, Alexandr Medvedev
Summary: This paper investigates the low efficiency of separating fine magnetic material in the rough processing of iron ore, and proposes solutions using air sizing and magnetic separation. The results show that this method can optimize the beneficiation of iron-containing ore tailings without the need for additional grinding.
Article
Geochemistry & Geophysics
Mark Pownceby, David A. McCallum, Warren J. Bruckard
Summary: A characterization study was conducted to identify the impurities, liberation degree of chromite, and possible beneficiation options of chromite ore from South Africa. The study used various techniques including bulk assays, X-ray diffraction, optical and scanning electron microscopy, and quantitative evaluation of mineral by scanning electron microscopy (QEMSCAN) and electron probe microanalysis (EPMA). The results showed that the ore contained 40.5% Cr2O3 with major impurities being Al2O3, MgO, and SiO2. The dominant mineral phase was chrome-rich spinel, and contaminant phases included siliceous minerals, plagioclase, Cr-rich diopside, and phlogopite mica. Upgrading test work demonstrated that stage crushing followed by wet gravity concentration produced a high-quality chromite product.
Article
Engineering, Chemical
K. P. Galvin, S. M. Iveson
Summary: The focus of this paper is on the application of gravity concentration and classification technology in mineral processing, particularly the challenges faced in processing particles smaller than 1.0 millimeter. The key challenge lies in delivering large-scale, highly efficient desliming in crucial commodities like iron ore to maximize resource value.
MINERALS ENGINEERING
(2022)
Article
Engineering, Chemical
E. L. J. Kleynhans, J. P. Beukes, P. G. van Zyl, S. P. du Preez
Summary: Ferrochrome (FeCr) is a crucial alloy for stainless steel production, primarily composed of iron (Fe) and chromium (Cr). FeCr is manufactured from chromite ore, which is the most important source of virgin Cr units. FeCr producers are paid based on the Cr content in the alloy, leading to the transportation of the Fe content without any economic benefit. This study investigated the selective removal of Fe from chromite ore to increase the Cr/Fe ratio. Although high Cr/Fe ratios were achieved, the recovery of Cr decreased significantly. The study also achieved desirable Cr/Fe ratios while maintaining high Cr recoveries.
MINERALS ENGINEERING
(2023)
Review
Materials Science, Multidisciplinary
Nnaemeka Stanislaus Nzeh, Patricia Abimbola Popoola, Abraham Adeleke, Samson Adeosun
Summary: The choice and application of physical beneficiation techniques for heavy minerals (HMs) depend on various factors such as mineralogy, composition, shape, particle size distribution, and physicochemical properties. The increasing demand for HM products in industries, especially in nuclear and power industries, has led to the need for their efficient recovery. However, challenges exist in the recovery and separation of HMs from associated impurities. This review focuses on exploring the applications of magnetic separation process in the beneficiation/recovery of HMs, aiming to improve mineral concentration efficiency and simplify the extraction processes involved.
Article
Materials Science, Multidisciplinary
Mahmut Altiner, Ahmedaljaali Ibrahim Idrees Ibrahim, Sait Kursunoglu, Soner Top, Oktay Bayat
Summary: This study investigated the recovery of nickel from tailings (0.2% Ni) obtained in a chromite beneficiation plant using H2SO4 leaching followed by oxalic acid precipitation. The experimental results indicate that the tailings used in this study are a good alternative as Ni resource in the near future.
Review
Multidisciplinary Sciences
Nnaemeka Stanislaus Nzeh, Patricia Popoola, Daniel Okanigbe, Samson Adeosun, Abraham Adeleke
Summary: The efficiency of physical separation techniques in heavy mineral concentration is often hindered by the lack of suitable mineral characterization strategies. The application of gravity concentration on heavy minerals has not been widely investigated and requires further investigation. This review aims to explore the advantages of enhanced gravity concentrations over conventional techniques and provide recommendations for optimal beneficiation.
Article
Metallurgy & Metallurgical Engineering
V Nunna, S. Hapugoda, M. Pownceby, G. J. Sparrow
Summary: This study successfully reduced the silica and alumina contents of a low-grade iron ore plant reject sample from the Pilbara region in Western Australia using a Floatex density separator, and obtained a high-quality iron ore concentrate suitable for use in sinter and pellet blends.
MINERAL PROCESSING AND EXTRACTIVE METALLURGY REVIEW
(2022)
Article
Engineering, Chemical
Ganesh Chalavadi, Ranjeet Kumar Singh
Summary: The study found that using shallow bed air fluidized separator (SBAFS) for iron ore fines beneficiation has great potential, with significantly improved grade of concentrate and reduced water consumption, showing practical application possibilities.
PARTICULATE SCIENCE AND TECHNOLOGY
(2021)
Article
Environmental Sciences
Mandakini Padhi, Teja Reddy Vakamalla, Narasimha Mangadoddy
Summary: This study focuses on experimentally analyzing the iron ore slime beneficiation using a novel hydrocyclone design, which shows excellent performance in separating iron, alumina, and silica components effectively.
Article
Chemistry, Physical
Hakan Ciftci
Summary: This study developed a new method for the dry beneficiation of bentonites using a laboratory-scale dynamic separator and stirred media mill. The results showed that this method can effectively remove impurities from bentonites and obtain concentrated products with smaller particle sizes.
APPLIED CLAY SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Alex Norgren, Corby Anderson
Summary: Historically, the separation of carbonate gangue from bastnaesite via flotation without sacrificing significant rare earth oxide (REO) grade or recovery has been challenging. Gravity separation could be a potential method due to the higher specific gravities of rare earth bearing minerals, but becomes increasingly difficult with finer liberation sizes. This study aimed to determine the feasibility of using gravity concentrators to beneficiate bastnaesite from calcite bearing flotation feed material, achieving rougher gravity REO recoveries approaching the upper 80% range while rejecting around 30% of total calcium, representing a significant improvement over traditional methods.
Article
Green & Sustainable Science & Technology
Pankaj Kumar, Sovan Kumar Patra, Sunil Kumar Tripathy, Nilamadhaba Sahu
Summary: Chromite ore processing tailings, a solid waste with ultra-fine size, poses challenges in recovery due to the difficulty in handling such fine particles. However, studies have shown that through smelting, high-quality metal products can be obtained from these tailings, promoting resource utilization and zero discharge.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Energy & Fuels
John Hansen-Carlson, Avimanyu Das
Summary: An in-depth analysis of CrossFlow Separator separation features for fine coal beneficiation was conducted, revealing statistically significant correlations between process responses and operating variables. Under optimal conditions, a clean coal with lower ash content and higher mass yield was obtained.
INTERNATIONAL JOURNAL OF COAL PREPARATION AND UTILIZATION
(2021)
Article
Metallurgy & Metallurgical Engineering
Sunil Kumar Tripathy, Y. Rama Murthy, Saeed Farrokhpay, Lev O. Filippov
Summary: This research aimed to investigate the dewatering amenability of tailing slurry from the beneficiation of chromite ore, which contains mainly ultrafine particles with Cr+6. Various dewatering techniques were studied, and an efficient dewatering circuit was developed to recover and recycle up to 97% of the water from the tailing slurry.
MINERAL PROCESSING AND EXTRACTIVE METALLURGY REVIEW
(2021)
Article
Geochemistry & Geophysics
Sharath Kumar Bhoja, Sunil Kumar Tripathy, Yanamandra Rama Murthy, Tamal Kanti Ghosh, C. Raghu Kumar, Deba Prasad Chakraborty
Summary: Magnetic separation is considered effective for manganese ore beneficiation with siliceous rich gangue minerals, while being inadequate for ferruginous type of ore. Detailed experiments on two different manganese ore types showed varying magnetic separation performance, influenced by mineralogy. The primary manganese bearing minerals were found to be cryptomelene, pyrolusite, psilomelane, and bixybyite, with alumina-bearing and iron-bearing minerals as major gangue minerals. Optimum grades and recoveries differed between the two samples, despite having similar input chemistry, highlighting the importance of mineralogical differences.
Article
Metallurgy & Metallurgical Engineering
Pankaj Kumar, Nilamadhaba Sahu, Aditya Roshan, Biranchi Narayan Rout, Sunil Kumar Tripathy
Summary: Ferrochromium production is a highly energy-intensive process, with silicon and carbon being the main impurities. Understanding the process parameters affecting impurity intake can reduce energy consumption and achieve the desired alloy composition.
MINERAL PROCESSING AND EXTRACTIVE METALLURGY REVIEW
(2022)
Article
Green & Sustainable Science & Technology
Pankaj Kumar, Sovan Kumar Patra, Sunil Kumar Tripathy, Nilamadhaba Sahu
Summary: Chromite ore processing tailings, a solid waste with ultra-fine size, poses challenges in recovery due to the difficulty in handling such fine particles. However, studies have shown that through smelting, high-quality metal products can be obtained from these tailings, promoting resource utilization and zero discharge.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Metallurgy & Metallurgical Engineering
Sunil Kumar Tripathy, D. S. Rao, C. Eswaraiah, D. Sahoo
Summary: The slag generated from steelmaking is a significant solid waste that has not been recycled due to various physical, chemical, and structural properties. This study investigates the distribution of phosphorous in the slag and the challenges in partitioning phosphorous-rich fractions for recycling purposes. The majority of particles have phosphorous concentrations ranging from 1.55% to 7.86% in ultrafine size dissemination.
TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS
(2021)
Review
Geochemistry & Geophysics
Silpa Sweta Jena, Sunil Kumar Tripathy, N. R. Mandre, R. Venugopal, Saeed Farrokhpay
Summary: Copper is recognized as a modern energy metal with diverse applications in construction, electrical wiring, and refrigeration. Research has shifted towards recovering copper from low-grade oxide and mixed ores due to depletion of high-grade sulphide deposits. The importance of copper in clean energy and ongoing research on beneficiation techniques are highlighted in this paper.
Review
Metallurgy & Metallurgical Engineering
Saroj Kumar Sahoo, Sunil Kumar Tripathy, A. Nayak, K. C. Hembrom, S. Dey, R. K. Rath, M. K. Mohanta
Summary: This review focuses on the worldwide resources of lithium ore, production, demand, and mineralogy, as well as recovery techniques from hard pegmatite ore. Various beneficiation methods are used for lithium ore, with flotation being the most commonly utilized. Key factors for efficient recovery of spodumene include reagent chemistry, surface properties, and water quality.
MINERAL PROCESSING AND EXTRACTIVE METALLURGY REVIEW
(2022)
Review
Metallurgy & Metallurgical Engineering
Neha Pandey, Sunil Kumar Tripathy, Sovan Kumar Patra, Gaurav Jha
Summary: With the growth of the stainless-steel industry, there has been a significant increase in the demand for nickel, particularly in the energy storage sector. The conventional high-grade sulfidic ores have been facing scarcity issues, which can be addressed by utilizing the low-grade lateritic ores. This article reviews the available hydrometallurgical approaches for treating laterite ores and separating nickel and cobalt, as well as discusses the importance of the mineralogy and spatial distribution of these ores in selecting the suitable hydrometallurgical route.
TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS
(2023)
Article
Energy & Fuels
Talasetti Santosh, Chinthapudi Eswaraiah, Shivakumar Irappa Angadi, Sunil Kumar Tripathy, Rahul Kumar Soni, Danda Srinivas Rao
Summary: The present research aims to analyze the comminution behavior of ferrochrome slag using high-pressure grinding rolls. The laboratory bench scale high-pressure grinding rolls were used to study the three significant variables on the grinding efficiency of ferrochrome slag. The Central Composite Design was used to study the process variables, such as roll gap, applied load, and roller speed.
Review
Energy & Fuels
Arvind Kumar, Rina Sahu, Sunil Kumar Tripathy
Summary: This literature review examines the energy-efficient ultrafine grinding of particles using stirred mills. The review provides an overview of different techniques for size reduction and the impact of energy requirements on the choice of stirred mills. It also discusses the factors influencing grinding performance, such as design, operating parameters, and feed material properties. The review concludes that stirred mills have significant potential for achieving energy-efficient ultrafine grinding and highlights their advantages over traditional grinding methods in terms of higher grinding efficiency, lower energy consumption, and reduced media consumption.
Article
Geochemistry & Geophysics
Chita R. Mahanta, Prabodha R. Sahoo, Manoj K. Mohanta, Rajendra K. Rath, Shobhana Dey, Sunil Kumar Tripathy, Jitendra Prasad, Akella S. Venkatesh
Summary: After geometallurgical evaluation, iron ores from eastern India have been identified as different types of ore with varying strengths and microporosity levels. Some of these ores are suitable for beneficiation, while others are not and have higher alumina content.
Article
Geochemistry & Geophysics
Bastien Demeusy, Carlos Andres Arias-Quintero, Gaelle Butin, Juliette Laine, Sunil Kumar Tripathy, Jerome Marin, Quentin Dehaine, Lev O. Filippov
Summary: This study conducted a preliminary geometallurgical assessment of the Beauvoir granite in France using various techniques, and found variations in lithium distribution within the granite. The mica content is higher in the southern area, while the lithium grade increases towards the center of the orebody.
Article
Engineering, Chemical
Sunil Kumar Tripathy, Y. Rama Murthy, Nikkam Suresh, Lev O. Filippov
Summary: The study investigates the recovery of chromite from low-grade ferruginous ore using carbothermic magnetization route with conventional and microwave heating sources. Alteration of crystalline structure and magnetic property of gangue minerals enables the separation of low-grade ore through magnetic separation. The research achieved successful upgrading of the ore through optimal roasting conditions and under microwave radiation, with discussion of findings through characterization tools.
ADVANCED POWDER TECHNOLOGY
(2021)
Article
Engineering, Chemical
Benjamin De Castro, Mostafa Benzaazoua, Soumali Roychowdhury, Aurelie Chopard, Francis Quintal Lauzon, Benoit Plante
Summary: This study proposes an innovative method using deep learning algorithm and reflected light optical imaging to automatically detect all particles and minerals in acrylic resin polished sections. The experimental results show that this method can accurately detect all mineral particles, including transparent minerals, under reflected light optical microscopy, and provide unbiased mineralogical quantification.
MINERALS ENGINEERING
(2024)
Article
Engineering, Chemical
Qiushi Song, Xinyu Du, Changlu Shan, Hongwei Xie, Zhiqiang Ning, Kai Yu
Summary: This study investigated the effect of magnetic stirring on the microstructure of Co deposits during electrowinning in a chloride solution. It was found that magnetic stirring effectively reduced the negative influence of H2 bubbles on the structure of Co deposits and changed their nucleation and growth behavior, resulting in the preparation of high-quality columnar Co crystals.
MINERALS ENGINEERING
(2024)
Article
Engineering, Chemical
Tao Ge, Xiaowei Zhou, Liang Xu, Yan Sun, Cheng Yang, Yongpan Tian, Zhuo Zhao
Summary: In this study, the extraction performance and complexation mechanism of p-di-ethyl-amino-methylthiacalix[4]arene (L) towards Pt(IV) were investigated. The results indicated that L had excellent complexation ability towards Pt(IV) and could selectively extract it from a solution containing multiple competing ions.
MINERALS ENGINEERING
(2024)
Article
Engineering, Chemical
Yuan Li, Dirk van Zyl
Summary: This paper presents a modified Kynch's approach to explain the hindered settling behavior of suspensions impacted by segregation. The experimental data and predicted results confirm the effectiveness of the proposed method.
MINERALS ENGINEERING
(2024)
Article
Engineering, Chemical
Yi Fang, Aurora Robledo-Cabrera, Changsheng Peng, Shan Huang, Qi Xiao, Alejandro Lopez-Valdivieso
Summary: With the assistance of mechanical ball milling, the partially oxidized micro-sponge iron (micro-Fe0@Fe2O3) achieves significantly improved removal of Cr(VI) across a broad pH range. Mechanical force eliminates the surface oxide layer and exposes the Fe0 core, leading to sustained reduction of Cr(VI). The efficiency of micro-Fe0@Fe2O3 is strongly influenced by dissolved oxygen, with higher DO resulting in the generation of stable reductant Fe(II) under acidic conditions, while DO consumption hinders the reduction of Cr(VI) under alkaline conditions due to increased pH. Parameters of ball milling operation, especially rotation speed, have a significant impact on the removal of Cr(VI).
MINERALS ENGINEERING
(2024)
Article
Engineering, Chemical
Alton F. Grabsch, Phillip D. Fawell, Michael G. Davies
Summary: High molecular weight partially hydrolysed polyacrylamide (PHPA) is commonly used in mineral exploration drilling to increase fluid viscosity and help maintain the suspension of fine particles. However, clarifying these suspensions can be difficult, and previous studies have found that anionic flocculants are ineffective. This study confirmed that nonionic flocculants can successfully aggregate the particles, indicating that the charged tails of adsorbed PHPA prevent anionic flocculants from accessing the particle surfaces.
MINERALS ENGINEERING
(2024)
Article
Engineering, Chemical
J. S. Guiral-Vega, L. Perez-Barnuevo, J. Bouchard, A. Ure, E. Poulin, C. Du Breuil
Summary: This paper introduces an approach that combines particle properties and process modeling to describe the behavior of iron ore in a laboratory-scale drum-type magnetic separator. Early information on iron ore processing behavior can be obtained through laboratory testing, automated mineralogy analysis, and process modeling.
MINERALS ENGINEERING
(2024)
Review
Engineering, Chemical
Sayed Janishar Anzoom, Ghislain Bournival, Seher Ata
Summary: This review discusses the benefits and challenges of coarse particle flotation, as well as recent developments in improving the process. Coarse particle flotation has various applications and offers advantages in technical, economic, and sustainability aspects. However, it also faces challenges such as particle detachment, transfer between phases, and persistence in the froth phase. Technological advancements, such as fluidized-bed flotation and processes enhancing bubble-particle attachment, have shown promising results in efficiently recovering larger particles.
MINERALS ENGINEERING
(2024)
Article
Engineering, Chemical
Yimei Xiao, Jinchan Feng, Bingqiao Yang, Huihua Luo, Fang Zhou
Summary: In this study, the use of fulvic acid as a depressant for the flotation separation of chalcopyrite from arsenopyrite was investigated. It was found that fulvic acid strongly depressed arsenopyrite while having little influence on chalcopyrite flotation. The addition of calcium hypochlorite facilitated the adsorption of fulvic acid on arsenopyrite surface.
MINERALS ENGINEERING
(2024)
Article
Engineering, Chemical
Bo Hao, Minqiang Fan
Summary: Particle-bubble attachment is crucial in coal and mineral flotation processes. In this study, the attachment process of low-rank coal particles to the bubble surface was simulated, revealing the important role of water film rupture in particle attachment.
MINERALS ENGINEERING
(2024)
Article
Engineering, Chemical
Shuwei Wu, Shuai Wang, Guoqiang Wang, Longfei Fan, Jianbo Guo, Zhengbin Liu, Haoyan Zhang, Wei Guan, Yukuan Wang, Yewei Wu
Summary: This study analyzes the motion mode of eccentric roller crushers and proposes a calculation method for productivity. Through laboratory experiments, the results indicate that the proposed method can effectively estimate the productivity of eccentric roll crushers.
MINERALS ENGINEERING
(2024)
Article
Engineering, Chemical
Hanna Miettinen, Malin Bomberg, Ozlem Bicak, Zafir Ekmekci, Paivi Kinnunen
Summary: Mineral processing requires large amounts of water, and reducing water consumption through recirculation and closing water loops is important. However, this can lead to the accumulation of contaminants in the process water, which can negatively affect the process performance. In this study, the impact of microorganisms on flotation performance was investigated, and ion exchange was evaluated for removing dissolved sulfur species and microorganisms from water. The results showed that adding microorganisms had a positive effect on flotation selectivity, especially for nickel. Different water types, process water and final tailings water, behaved slightly differently. Ion exchange proved to be effective in removing sulfur species and microorganisms, and dissolved air flotation was a successful pretreatment for ion exchange in removing microorganisms.
MINERALS ENGINEERING
(2024)
Article
Engineering, Chemical
Canneng Chen, Song Zhang, Quanjun Liu, Luzheng Chen, Yongjun Xian, Yijie Wang
Summary: This study introduces the use of ultrasonic pretreatment to enhance the flotation separation of elemental sulfur and silver-bearing lead minerals from ultrafine residue. The results show that ultrasonic pretreatment effectively liberates associated sulfur and improves the separation of sulfur and silver-bearing lead minerals. Under optimized conditions, ultrasonic pretreatment significantly improves the recovery and grade of sulfur in the concentrate, as well as the recovery of lead and silver in the tailings.
MINERALS ENGINEERING
(2024)
Article
Engineering, Chemical
Genzhuang Li, Fisher Wang, Bern Klein, Michael Deal, Aaron Wright, Hector Mezquita
Summary: This paper presents a stress-based approach for predicting and improving large-scale HIG mill performance through experimental testing and model calibration.
MINERALS ENGINEERING
(2024)
Article
Engineering, Chemical
Runpeng Liao, Shuming Wen, Jian Liu, Shaojun Bai, Qicheng Feng
Summary: This study demonstrates that the use of a DDA/DDTC mixed collector system can significantly improve the flotation performance of smithsonite. The synergistic effect between DDA and DDTC is confirmed, and the mixed collector system contributes to a decrease in solution surface tension. The use of FT-IR and XPS confirms the simultaneous physisorption and chemisorption of DDA and DDTC on the smithsonite surface, and contact angle measurements show that the mixed collector effectively enhances the hydrophobicity of smithsonite. Molecular dynamics simulations reveal the multilayer adsorption of DDTC and DDA on the smithsonite surface, with DDTC promoting the adsorption of DDA.
MINERALS ENGINEERING
(2024)
