Surface Chemistry of Novel Collectors and Their Application to Froth Flotation of Rare Earth Minerals PDF Download
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Author: Dylan Everly
Publisher:
ISBN:
Category : Bastnaesite
Languages : en
Pages : 172
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Book Description
Author: Dylan Everly
Publisher:
ISBN:
Category : Bastnaesite
Languages : en
Pages : 172
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Book Description
Author: Jan Leja
Publisher: Springer Science & Business Media
ISBN: 1461579759
Category : Science
Languages : en
Pages : 772
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Book Description
The process of froth flotation is an outstanding example of applied surface chemistry. It is extensively used in the mining, mineral, metallurgical, and chemical industries for separation and selective concentration of individual minerals and other solids. Substances so concentrated serve as raw materials for producing appropriate metals and chemicals. The importance of flotation in technology is chiefly due to the ease with which it can be made selective and versatile and to the economy of the process. The objective of this book is to review the fundamentals of surface chemistry together with the relevant aspects of organic and inorganic chemistry that-in the opinion of the author-are important ~ control of the froth flotation process. The review updates the information that had been available in books by Sutherland and Wark (1955), Gaudin (1957), Klassen and Mokrousov (1963), and GIembotsky et al. (1963). It emphasizes mainly the surface chemical aspects of the process, leaving other relevant topics such as hydrodynamics, mechanical and electrical technology, cir cuit design and engineering, operations research, instrumentation tech nology, modeling, etc., to appropriate specialized treatments.
Author: S. Ramachandra Rao
Publisher: Springer Science & Business Media
ISBN: 1475743025
Category : Science
Languages : en
Pages : 793
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Book Description
th The technology of froth flotation, invented in the early 20 century was first used for the concentration of sulfide minerals. Since then it has been applied for the processing of many nonsulfide ores as weIl, including oxides, carbonates, silicates, soluble minerals like halite and sylvite and energy minerals like coal and bitumen. In recent years it has been used for several nonrnineral applications, such as waste water treatment, deinking of paper for recycling and resource recovery from industrial wastes he technology continues to grow with new applications reported every year. Flotation is based on chemical phenomena occurring at the interfaces, solid/water and air/water. Surface Chemistry principles have played a significant role in the development of flotation technology. Knowledge of aqueous solution chemistry and electrochemistry has added to our understanding of the reactions in flotation systems. Professor Jan Leja's book has weIl served researchers and students as they tried to understand the chemistry of flotation, and it is a significant contribution to the advancement of knowledge. However, since the book was first published, new research techniques and ever growing information have made an update necessary. The revised edition compiled by Dr. S. R. Rao has brought together fundamental aspects of the chemistry of flotation and how they apply to practical systems. It should serve all who are working in the area of flotation and interested in exploring new applications of flotation technology.
Author: S. Ramachandra Rao
Publisher: Springer Science & Business Media
ISBN: 9780306481796
Category : Science
Languages : en
Pages : 442
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Book Description
The second edition of the book Surface Chemistry of Froth Flotation by Dr. S.R. Rao presents many significant advances of the 20 years since the publication of the first edition, including electrochemistry of sulfide flotation, use of chelating compounds in flotation, mechanism of activation and depression, inadvertent activation, fine particle flotation and several others of current interest to flotation engineers, researchers and graduate students. Dr. Rao has gathered recent published information and integrated it with established knowledge under various topics. The book also describes areas of ongoing research in the subject.
Author: Dianzuo Wang
Publisher: Springer
ISBN: 9811020302
Category : Science
Languages : en
Pages : 390
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Book Description
This book summarizes the author’s findings on the functional principle of flotation reagents, gathered over the past few decades. The fundamentals of and approaches common to surface chemistry are applied to study the reagents’ structure and performance, as well as their interaction with minerals. In particular, the book establishes the theoretical criteria for collector performance. It also includes the quantum chemistry parameters, steric configuration, HOMO and LUMO surface of various reagents. The book offers a valuable resource for all university graduate students, researchers and 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.
Author: Zhiyong Gao
Publisher: Frontiers Media SA
ISBN: 2889662098
Category : Technology & Engineering
Languages : en
Pages : 120
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Book Description
This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact.
Author: Dianzuo Wang
Publisher: Springer
ISBN: 9811020272
Category : Science
Languages : en
Pages : 211
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Book Description
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.
Author: Maurice C. Fuerstenau
Publisher: SME
ISBN: 9780873352529
Category : Science
Languages : en
Pages : 910
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Book Description
&Quot;Froth Flotation: A Century of Innovation comprehensively describes state-of-the-art research and practice in mineral froth flotation a century after its introduction. Recognized experts from around the world provide in-depth coverage on many facets of flotation, including the historical aspects; fundamentals; chemistry; flotation cells, modeling, and simulation; and flotation plant practice. This commemorative volume is an invaluable reference for industry professionals, researchers, and graduate students."--BOOK JACKET.
Author: Maurice C. Fuerstenau
Publisher: Random House Trade
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 192
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Book Description
Author: Ronghao Li
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
"Rare earth elements (REE) have been utilized in many cutting-edge applications. Bastnäsite, a flurocarbonate rare earth mineral (REM), is one of the primary sources in REE production. Froth flotation is one of the most commonly applied techniques in REM processing, as well as for the mineral processing industry in general. A type of ionic liquid (IL), tetraethylammonium mono-(2-ethylhexyl)2-ethylhexyl phosphonate ([N2222][EHEHP]), has been investigated previously for REE solvent extraction, and was proven selective and effective. In this work, [N2222][EHEHP] has been investigated as a collector for REM flotation for the first time, with the results compared to quartz and hematite (two gangue minerals commonly associated with REM deposits). Zeta potential measurements and Fourier transfer infrared spectroscopy (FTIR) were used to investigate the surface chemistry of the minerals, the results of which were used to explain microflotation responses. Microflotation results suggest higher collecting ability of IL for quartz and hematite than for bastnäsite, which only showed appreciable recovery at pH 5 with 500 g/t IL. FTIR and zeta potential results suggest adsorption of the phosphonate group onto bastnäsite and hematite, likely through chemisorption; whereas for quartz, the high flotation recovery is likely due to weakly bonded ammonium moiety. To improve the separation efficiency, three depressants, sodium silicate, NorligH (a commercial depressant contains calcium lignin sulfonate), and manganese chloride were tested. Microflotation tests show that the tested depressants can significantly depress bastnäsite at all tested conditions, with limited impact on hematite and quartz. A synthetic mixture of three minerals was tested in bench scale flotation at pH 5 with sodium silicate. Results show that bastnäsite was selectively depressed, with the recovery of hematite and quartz remaining almost unchanged. A better separation could be achieved following such reverse flotation route, possibly with a higher collector dose and a more effective depressant. A pretreatment stage is suggested to reject some of the gangue minerals before flotation in order to improve separation efficiency." --
