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Surface Interactions in Fine-particle Flotation

Surface Interactions in Fine-particle Flotation
Author:
Publisher:
Total Pages:
Release: 1985
Genre:
ISBN:

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Many factors, such as a decrease in mass and an increase in surface area, have been considered to be responsible for the problems involved in the processing of fine particles. In this paper, the role of alterations in morphology, mineralogy, and surface chemical composition in the fine and ultrafine size range is considered. Particularly, interactions between surface layers resulting from precipitation or coating that can be a major force responsible for the behaviour of fines are discussed. Significant surface chemical alterations can result from surface precipitation of inorganics, organics, and polymers, depending upon solution properties such as pH. Chemical and hydrodynamic interactions between organic layers or polymer-surfactant layers can play an important role in such processes as carrier flotation and flocc-flotation. These interactions are discussed in terms of the solution chemistry of minerals, surfactants, and polymers in the system.


Advances in Fine Particles Processing

Advances in Fine Particles Processing
Author: John Hanna
Publisher: Springer Science & Business Media
Total Pages: 449
Release: 2012-12-06
Genre: Science
ISBN: 1468479598

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Processing of fine particles has presented numerous challenges to scientists and engineers for many years. Considerable progress has al ready been made in meeting these challenges across various fields of applications around the world. Research on every aspect of fine particle processing has gained momentum in recent years, resulting in the development of new processes, improved products, and better understanding of the science and engineering fundamentals of fine particles. This symposium addressed the recent progress in fine particles processing, particularly in the production of minerals for chemicals, pigments and metal production, ceramic materials, and fossil fuels. This book represents the edited proceedings of the International Symposium on Advances in Fine Particles Processing, where selected peer-reviewed papers describe current practices, review the state of the art and report original fundamental and applied research on fine particle production, sizing, characterization of the interface, fluid flow, and interparticle colloidal interactions, leading to dispersion, flocculation and flotation. Processing of fine particles by multi-chemical, physical and biological phenomena has also been addressed. Accordingly, the book consists of seven parts, with each part addressing a specific topic. Part One deals with production of fine particles by comminu tion methods where different milling practices, mathematic modeling and physical chemical control methods are reported. Part Two covers particle flow properties in various fluids. Part Three addresses surface and colloidal phenomena in fine particle processing, while Part Four continues this topic but with emphasis on clay minerals.


Surface Chemistry of Froth Flotation

Surface Chemistry of Froth Flotation
Author: S. Ramachandra Rao
Publisher: Springer
Total Pages: 744
Release: 2012-11-12
Genre: Science
ISBN: 9781461348023

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th The technologyoffroth flotation, invented in the early 20 century was first used for the concentration ofsulfide minerals. Since then it has been applied for the processing of many nonsulfide ores as well, 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 nonmineral applications, such as waste water treatment, deinking ofpaper for recycling and resource recovery from industrial wastes he technology continues to grow with new applications reportedevery 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 ofaqueous solution chemistry and electrochemistry has added to our understanding ofthe reactions in flotation systems. ProfessorJan Leja's bookhas well served researchers and students as theytried to understand the chemistry of flotation, and it is a significant contribution to the advancement ofknowledge. 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 ofthe chemistryofflotation and how they apply to practical systems. It should serve all who are working in the area of flotation and interested inexploring new applications offlotation technology.


Polymer Adhesion, Friction, and Lubrication

Polymer Adhesion, Friction, and Lubrication
Author: Hongbo Zeng
Publisher: John Wiley & Sons
Total Pages: 0
Release: 2013-04-01
Genre: Technology & Engineering
ISBN: 9780470916278

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Specifically dedicated to polymer and biopolymer systems, Polymer Adhesion, Friction, and Lubrication guides readers to the scratch, wear, and lubrication properties of polymers and the engineering applications, from biomedical research to automotive engineering. Author Hongbo Zeng details different experimental and theoretical methods used to probe static and dynamic properties of polymer materials and biomacromolecular systems. Topics include the use of atomic force microscopy (AFM) to analyze nanotribology, polymer thin films and brushes, nanoparticles, rubber and tire technology, synovial joint lubrication, adhesion in paper products, bioMEMS, and electrorheological fluids.


Advances in Fine Particles Processing

Advances in Fine Particles Processing
Author: John Hanna
Publisher: Springer
Total Pages: 472
Release: 2012-05-18
Genre: Science
ISBN: 9781468479607

Download Advances in Fine Particles Processing Book in PDF, ePub and Kindle

Processing of fine particles has presented numerous challenges to scientists and engineers for many years. Considerable progress has al ready been made in meeting these challenges across various fields of applications around the world. Research on every aspect of fine particle processing has gained momentum in recent years, resulting in the development of new processes, improved products, and better understanding of the science and engineering fundamentals of fine particles. This symposium addressed the recent progress in fine particles processing, particularly in the production of minerals for chemicals, pigments and metal production, ceramic materials, and fossil fuels. This book represents the edited proceedings of the International Symposium on Advances in Fine Particles Processing, where selected peer-reviewed papers describe current practices, review the state of the art and report original fundamental and applied research on fine particle production, sizing, characterization of the interface, fluid flow, and interparticle colloidal interactions, leading to dispersion, flocculation and flotation. Processing of fine particles by multi-chemical, physical and biological phenomena has also been addressed. Accordingly, the book consists of seven parts, with each part addressing a specific topic. Part One deals with production of fine particles by comminu tion methods where different milling practices, mathematic modeling and physical chemical control methods are reported. Part Two covers particle flow properties in various fluids. Part Three addresses surface and colloidal phenomena in fine particle processing, while Part Four continues this topic but with emphasis on clay minerals.


Colloidal Science of Flotation

Colloidal Science of Flotation
Author: Ahn Nguyen
Publisher: CRC Press
Total Pages: 882
Release: 2003-12-17
Genre: Science
ISBN: 9780824747824

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Keeping pace with explosive developments in the field, Colloidal Science of Flotation reviews and updates the fundamentals of the bubble-particle collection phenomenon using a self-consistent approach that helps readers understand the hydrodynamic aspects of bubble-particle collection. The authors examine bubble rise velocity, water velocity around air bubbles, the thinning of intervening liquid films, the stability of particle-bubble aggregates, and macroscopic processes in froth. They also survey the applicability of emerging technologies in industrial flotation deinking, wastewater treatment, flotation of plastics, and improvements in minerals and coal flotation.


Particle Deposition and Aggregation

Particle Deposition and Aggregation
Author: M. Elimelech
Publisher: Butterworth-Heinemann
Total Pages: 458
Release: 2013-10-22
Genre: Science
ISBN: 1483161374

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Particle Deposition and Aggregation: Measurement, Modelling and Simulation describes how particle deposition and aggregation can be measured, modeled, and simulated in a systematic manner. It brings together the necessary disciplines of colloid and surface chemistry, hydrodynamics, experimental methods, and computational methods to present a unified approach to this problem. The book is divided into four parts. Part I presents the theoretical principles governing deposition and aggregation phenomena, including a discussion of the forces that exist between particles and the hydrodynamic factors that control the movement of the particles and suspending fluid. Part II introduces methods for modeling the processes, first at a simple level (e.g. single particle-surface, single particle-single particle interactions in model flow conditions) and then describes the simulation protocols and computation tools which may be employed to describe more complex (multiple-particle interaction) systems. Part III summarizes the experimental methods of quantifying aggregating and depositing systems and concludes with a comparison of experimental results with those predicted using simple theoretical predictions. Part IV is largely based on illustrative examples to demonstrate the application of simulation and modeling methods to particle filtration, aggregation, and transport processes. This book should be useful to graduates working in process and environmental engineering research or industrial development at a postgraduate level, and to scientists who wish to extend their knowledge into more realistic process conditions in which the fluid hydrodynamics and other complicating factors must be accommodated.


Surface Chemistry of Froth Flotation

Surface Chemistry of Froth Flotation
Author: S. Ramachandra Rao
Publisher: Springer Science & Business Media
Total Pages: 793
Release: 2013-06-29
Genre: Science
ISBN: 1475743025

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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.