Versión española

FUNDAMENTALS OF THE THEORY OF FLOTATION

By Ph.D. Natalia Petrovskaya

© N. Petróvskaya, 2007

My book "Fundamentals of the theory of flotation" is one of the few completely new theoretical books on flotation enrichment of minerals in the world. In the book is reviewed and analyzed the main processes occurring in the flotation system. My book presents all kinds of mineral flotation detail. Any other book about the flotation in the world doesn’t have this.

I tried to bring all of my industrial, university and scientific expertise in this book of the fairly compact volume (192 pages).

The book has a scientific novelty, and contains only the author's text and illustrations. In the book "Fundamentals of the theory of flotation" I present an affordable and popular form the quite complex theoretical issues, unlike many books of other authors on the subject, often overwrought by formulas and abstruse wording.

My book is intended for a broad category of scientists, specialists, professors and students.

TABLE OF CONTENTS

Introduction

1. Fundamentals of flotation separation

1.1. General concepts of flotation separation (fragment) (

fragment)

1.2. Varieties of flotation separation (fragment)

1.2.1. Variety of froth flotation

Froth flotation

Froth separation

Electrolytic flotation (fragment)

Chemical flotation

Biochemical flotation (fragment)

Vacuum flotation (fragment)

Pressure flotation (fragment)

Flotation by boiling water

Flotation by waterfall

1.2.2. Oil flotation

1.2.3. Film flotation (fragment)

1.2.4. Flotation by carrier (fragment)

1.2.5. Ionic flotation and molecular flotation (fragment)

1.3. Historical information of flotation separation

1.4. Sphere of using of flotation separation (fragment)

2. Main parts of the flotation system and characteristics of their interaction

2.1. Solid phase (fragment)

2.2. Gas phase

2.3. Liquid phase

2.4. Interaction of the liquid and gas phases

2.5. Interaction of the solid and gas phases

2.6. Interaction of the solid and liquid phases

2.7. Interaction of the phases of the polar liquid and nonpolar

3. Wettability of mineral surface

3.1. Contact angle

3.2. Contact angle of the chemically heterogene

ous surface

3.3. Equilibrium contact angle

3.4. Hysteretic contact angle

3.5. Selective contact angle

4. Processes in the flotation system

4.1. General concepts (fragment)

4.1.1. Evaluation of the use of thermodynamic analysis in flotation separation

4.1.2. Stages of flotation separation

4.2. Fundamentals of sorption of flotation reagents (fragment)

4.2.1. Varieties and forms sorption of reagents in the mineral surface

4.2.2. Sorption on the border of the solid and liquid phases

Surface connections

Three-dimensional connections (films)

Sorption in the double electric layer

4.3. Fundamentals of pulp aeration

4.3.1. General concepts

4.3.2. Aeration of pulp by air dispersion

Aeration of pulp by air dispersion by mechanical divices

Aeration of pulp by passing air through a porous barrier

4.3.3. Aeration of pulp by the bubbles that stood out from the water

Aeration of pulp by reducing the partial pressure of gas above the pulp and with the heating the pulp

Aeration of pulp by the electrolytic gas bubbles

Aeration of pulp by chemically formed gas bubbles

4.4. General regularities of motion of bubbles and particles

in a flotation system

4.4.1. Hydrodynamic processes in the flotation pulp

4.4.2. Floating up of gas bubbles in water (fragment)

4.4.3. Falling of mineral particles in water

4.5. Formation of the flotation complex

4.5.1. Main methods of formation of the flotation complex

Collision of particle with a bubble

Skimming of the particles across the surface of the bubble

Capture of particles by turbulent flow of water in the aft part

of the bubble

Diffusion of the particles to the surface of the bubble

Bubbling on the surface of the particle

4.5.2. Thermodynamic analysis of formation of the elementary flotation complex

4.5.3. Energy analysis of formation of the elementary flotation complex

4.6. General regularities of the rise of flotation complex to the surface

4.6.1. Terms of buoyancy of flotation complex

4.6.2. Main methods of destruction of flotation complex

4.6.3. Terms of preservation of flotation complex

4.6.4. Influence of hysteresis of the wetting to the preservation of f

lotation complex

4.7. Other processes in the flotation pulp

4.7.1. Mechanical removal of particles to the flotation foam

4.7.2. Coalescence of bubbles

4.7.3. Aggregation of particles in the pulp

4.8. Processes in the flotation foam

4.8.1. Two-phase foam

4.8.2. Three-phase foam

4.8.3. Main parameters of foam

4.9. Separation of the flotation products

5. Probability of flotation separation

References

Subject index

Fragments of the book:

Fundamentals of sorption of flotoreagents

The rate of rise of the bubble

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