Download or read book Amine Flotation of Quartz as Applied to Iron Ore Beneficiation written by Frank Mathew Hruz and published by . This book was released on 1954 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Beneficiation of Iron Ores by Flotation written by and published by . This book was released on 1945 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Finding Baseline Flotation Parameters for the Reverse Flotation Beneficiation of Sishen Low Grade Banded Iron Ore written by Annelize Fouchee and published by . This book was released on 2015 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt: Anglo American Kumba Iron Ore, a member of the Anglo American plc group, owns high-quality resource bases in both South Africa and Brazil. One of these, Sishen iron ore mine, is a South African mine, where lumpy high-grade hematite ore is treated. As these easily treatable resources depletes, alternative processing methods need to be investigated to ensure sustainability. Low-grade iron ores are commonly beneficiated by a combination of magnetic separation, gravity separation and direct- or reverse flotation. Fine size iron ore fractions, less than 150 micron, requires flotation to be beneficiated to high-grade saleable iron ore product for pelletizing. Three flotation routes have been developed for iron ores outside of Africa: (i) reverse cationic flotation of quartz; (ii) direct anionic flotation of iron oxides; and (iii) reverse anionic flotation of activated quartz. Although vast ores of increasingly complex nature have been identified in Africa, existing literature does not mention any iron ore flotation practices that are currently employed or investigated on this continent. The aim of this study was to prove that low grade Sishen banded iron ore can be upgraded to a saleable iron product by froth flotation. This was proven by a mineralogical study of banded low grade Sishen iron ore; the evaluation of suitable reagent suites; flotation cell conditions; additional beneficiation circuit stages; evaluation of the developed flotation regime on varied feed compositions and determination of correlations between the mineral liberation analysis and flotation results. The fundamental mechanism for selective flotation of hematite is attributed to the selective depression of hematite, where quartz particles may be removed from hematite in a narrow pH range. In this pH range, amine collectors form an ion-molecular complex, which induces hydrophobicity on the surface of quartz particles and attain its frothing character. Reverse cationic flotation is the most-common approach for hematite-quartz separation. Amines are used as collecting reagent; two amine variants supplied by Clariant, have been identified to exhibiting superior silica collecting performance. Starch is the most commonly employed hematite depressant. The ore characterisation of seven clearly identified low grade banded iron formation, BIF, iron ore samples from Sishen iron ore mine, and an equal blend of these seven BIF samples comprises of Chemical composition (by x-ray fluorescence, XRF), mineralogical composition (x-ray diffraction, XRD and mineral liberation analysis, MLA), particle size distribution (sieve tests and laser diffraction) and mineral liberation (by scanning electron microscopy, SEM and MLA). Baseline flotation parameters for reverse flotation of low grade Sishen iron ore BIF, which included bench-scale laboratory flotation tests were established by the evaluation of the depressant type, depressant dosage and depressant dosing stage, dispersant type and dispersant dosage, collector dosage and mixed collector ratio, grinding size and flotation circuit configuration. Results from this investigation identify hematite as the main iron bearing mineral in low grade Sishen iron ore and quartz as the main gangue mineral, with limited amounts of annite and kaolinite. The iron content ranges between 25% and 39% for the received individual samples. The particle size distribution, with 80% passing 1.1 mm, was too coarse for flotation. Grinding curves were constructed to produce a fine flotation, medium flotation and coarse flotation particle size range. Laboratory bench scale flotation tests confirm strong pH dependence for the recovery of hematite, where a natural hydrophobicity is exhibited at pH 7. These tests confirmed that caustisized starch is a suitable depressant for hematite minerals in a low grade Sishen BIF iron ore and that the addition of sodium silicate dispersant may improve the iron product grade. The depressant dosage has a minor effect on the flotation results, and the depressant mechanism is largely dependent on the flotation pulp pH. Froth stability is greatly influenced by a change in the amine collector dosage, where excessive amounts of fine particles also over stabilise the froth bed and it is not possible to control the froth bed height at collector dosages of larger than 25 g/t/stage. Alteration of the flotation circuit, from a six stage rougher float to a nine stage rougher float and six stage scavenger float, after additional milling and depressant dosing, yielded the required target of at least 64% Fe and 30% recovery to the tails(iron product). With no preparation by de-sliming, an iron recovery of 34.7% to the iron product can be achieved by flotation alone. At 66.4% iron, MLA analysis confirmed the iron product to be of a saleable high grade. The MLA analysis also showed the limit of flotation performance to be an excessive entrainment of iron-containing particles after the second scavenger flotation stage. The use of this reagent suite on individual BIF ores shows that more than 98.5% of the silicate materials can be removed to the froth phase. As with the composite BIF material, an additional scavenger stage is required to reach the target percentage iron recovery of 30%.
Download or read book Iron Ore Flotation written by Mark Ma and published by Nova Novinka. This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microbiology as a science has expanded by leaps and bounds in the past few decades due to advancements in sophisticated instrumentation and recombinant DNA technology which added new dimension and revealed the understanding of the subject at a molecular level. This has resulted in the emergence of several applications of this domain. This book have been complied with the help of leading Microbiologists from India and other countries with an objective of providing current developments in the field of Microbiology. This book will be useful for under and postgraduate students, academicians, researchers and laboratory personnel from disciplines like Microbiology, Biochemistry, Veterinary Science, Medicine, Pharmacy, Agriculture, Food Science, Environmental Science, Industrial Microbiology and other allied Biological Sciences.
Download or read book Reagents in Mineral Technology written by P. Somasundaran and published by Routledge. This book was released on 2018-04-27 with total page 772 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reagents in Mineral Technology provides comprehensive coverage of both basic as well asapplied aspects of reagents utilized in the minerals industry.This outstanding, single-source reference opens with an explicit account of flotation fundamentals,including coverage of wetting phenomena, mineral/water interfacial phenomena, flo tationchemistry, and flocculation and dispersion of mineral suspensions.It then discusses flotation of sulfide and nonsulfide minerals, with attention to formation ofclithiolates, formation of metal thiol compounds, application of fatty acids, sulfosuccinic acids,amines, and other collectors.Reagents in Mineral Technology also reviews adsorption of surfactants on minerals .. .details adsorption of polymers .. . and considers the chemistry and application of chelation agentsin minerals separations.Additional chapters consider grinding aids, frothers, inorganic and polymeric depressants,dewatering and filtering aids, analytical techniques, and much more.Unique in its depth of coverage, Reagents in Mineral Technology will prove an invaluablereference for mineral engineers and processors; analytical, surface, colloid, and physical chemists;petroleum, petrochemical, metallurgical, and mining engineers; and for use in advancedundergraduate- and graduate-level courses in these and related fields.
Download or read book Froth Selectivity in the Flotation of Quartz from Finely Ground Oxidized Iron Ores Using Primary Branched Chain Ether Amines co flocculation Drainage written by James Lee Coburn and published by . This book was released on 1985 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook of Flotation Reagents Chemistry Theory and Practice written by Srdjan M. Bulatovic and published by Elsevier. This book was released on 2007-02-19 with total page 459 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of Flotation Reagents: Chemistry, Theory and Practice is a condensed form of the fundamental knowledge of chemical reagents commonly used in flotation and is addressed to the researchers and plant metallurgists who employ these reagents. Consisting of three distinct parts: 1) provides detailed description of the chemistry used in mineral processing industry; 2) describes theoretical aspects of the action of flotation reagents 3) provides information on the use of reagents in over 100 operating plants treating Cu, Cu/Zn, Cu/Pb, Zn, Pb/Zn/Ag, Cu/Ni and Ni ores. * Looks at the theoretical aspects of flotation reagents * Examines the practical aspects of using chemical reagents in operating plants * Provides guidelines for researchers and engineers involved in process design and development
Download or read book Froth Selectivity in the Flotation of Quartz from Finely Ground Oxidised Iron Ores Using Primary Branched Chain Ether Amines written by James Lee Coburn and published by . This book was released on 1985 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Flotation Reagents Applied Surface Chemistry on Minerals Flotation and Energy Resources Beneficiation written by Dianzuo Wang and published by Springer. This book was released on 2016-09-19 with total page 211 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents essential information on chemical reagents commonly used in flotation processes. It comprehensively summarizes the properties, preparation and applications of collectors, frothers, depressants and flocculants. It also discusses the microanalysis of flotation reagents and adsorption measurement. The book offers a valuable resource for all university researchers and students, as wells as R&D engineers in minerals processing and extractive metallurgy who wish to explore innovative reagents and technologies that lead to more energy efficient and environmentally sustainable solutions.
Download or read book Iron Ore written by Liming Lu and published by Woodhead Publishing. This book was released on 2021-12-02 with total page 842 pages. Available in PDF, EPUB and Kindle. Book excerpt: Iron Ore: Mineralogy, Processing and Environmental Sustainability, Second Edition covers all aspects surrounding the second most important commodity behind oil. As an essential input for the production of crude steel, iron ore feeds the world's largest trillion-dollar-a-year metal market and is the backbone of the global infrastructure. The book explores new ore types and the development of more efficient processes/technologies to minimize environmental footprints. This new edition includes all new case studies and technologies, along with new chapters on the chemical analysis of iron ore, thermal and dry beneficiation of iron ore, and discussions of alternative iron making technologies. In addition, information on recycling solid wastes and P-bearing slag generated in steel mills, sustainable mining, and low emission iron making technologies from regional perspectives, particularly Europe and Japan, are included. This work will be a valuable resource for anyone involved in the iron ore industry. Provides an overall view of the entire value chain, from iron ore to metal Includes specific information on process/stage/operation in the value chain Discusses challenges and developments, along with future trends in the iron ore and steel industries Incorporates new, sustainable mining techniques
Download or read book Electronic Structure and Surfaces of Sulfide Minerals written by Jianhua Chen and published by Elsevier. This book was released on 2020-04-28 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electronic Structure and Surfaces of Sulfide Minerals: Density Functional Theory and Applications examines the mineral structure and electronic properties of minerals and their relationship to mineral floatability by density functional theory (DFT). This pragmatic guide explores the role of minerals in flotation by focusing on the mineral surface structure, electronic properties, and the adsorption of flotation agents through the study of the microscopic mechanism of reagents from the structure and properties of minerals. The flotation mechanism is explained from the point-of-view of solid physics, which is of great significance for both theoretical research and practical applications. The study of the structure and properties of the minerals can reveal the essential nature of mineral flotation, hence why minerals have floatability, the mechanism of response of different minerals to different chemicals, and the origin of the selectivity of flotation agents.
Download or read book Iron Ore Flotation written by Mark Ma and published by Createspace Independent Pub. This book was released on 2012-03-06 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first book on iron ore flotation in the literature. It covers the full details of iron ore flotation, including fundamental research and industrial practice, current industrial practice and latest innovations, the iron ore flotation practice in western countries as well as eastern countries (The later is largely unknown to the West, but is actually important as detailed in this book), classical theories and latest research findings, the rejection of silica as well as other specific impurities such as Al and P. This book presents a comprehensive view of iron ore flotation, including its history, developments, and current practice. Dr. Mark Ma is the Editor-in-Chief of the Journal of Metallurgical Engineering (New York, USA), an Editorial Board Member of the International Journal of Mining Engineering and Mineral Processing (Los Angeles, USA), a reviewer for a number of international journals, and has published a series of research papers in the iron ore flotation area on international journals. Dr. Mark Ma has also provided technical service to a number of the major iron ore producers in the world, including Vale, BHP, etc, and has broad experience in the iron ore industry.
Download or read book Biotechnology of Metals written by K.A. Natarajan and published by Elsevier. This book was released on 2018-06-13 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biotechnology of Metals: Principles, Recovery Methods and Environmental Concerns deals with all aspects of metal biotechnology in different areas, such as biogenesis, biomaterials, biomimetic strategies, biohydrometallurgy, mineral biobeneficiation, electrobioleaching, microbial corrosion, human implants, concrete biocorrosion, microbiology of environment pollution, and bioremediation. As the technology of this interdisciplinary science has diversified over the last five years, this book provides a valuable source for scientists and students in a number of disciplines, including geology, chemistry, metallurgy, microbiology, chemical engineering, environment, civil engineering, and biomedical engineering. Offers comprehensive coverage of an interdisciplinary subject Outlines the role of microbiology and biotechnology in mining, metallurgy, waste disposal and environmental control Covers new topics, such as biogenesis, biomaterials processing, the role of micro-organisms in causing corrosion, and much more Presents scientifically illustrated experimental research methods in metals biotechnology
Download or read book An Investigation of the Calcium ion Activation of Quartz in the Flotation of an Iron Ore from Pea Ridge Missouri written by James Joseph Drost and published by . This book was released on 1968 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Iron Ores Bioprocessing written by Mingming Zhang and published by Springer Nature. This book was released on 2022-10-19 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes leading research in bioengineering for development of novel technologies for ferrous metal extraction. The author includes new developments in molecular biology, biochemistry, microbiology, cell metabolism, and engineering principles and applies them to the conventional iron ore industry - proposing innovative solutions to various industry challenges. The book focuses on applied approaches and describes emerging and established industrial processes, as well as the underlying theory of the process, and the biology of the microorganisms involved. Elaborates on bioprocessing technologies applicable for extraction of ferrous metals using cross-pollination of microbiology and extractive metallurgy; Presents a systematic overview of bioprocessing technologies encompassing laboratory research, pilot scale studies, and industrial process flowsheet design; Provides comprehensive coverage of the engineering principles behind bioprocesses of iron ores including material and energy balances, transport processes, reactions and reactor engineering.
Download or read book Beneficiation of Iron Ores by Flotation written by J. Bruce Clemmer and published by . This book was released on 1945 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Influence of Thermal Pretreatment on Flotation Characteristics of Iron Ore written by Robert Bruce Tippin and published by . This book was released on 1974 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt:
