FUNDAMENTOS DE LA TEORÍA DE FLOTACIÓN By Ph.D., Associate professor Natalia Petrovskaya

© N. Petróvskaya, 2007

Todos los derechos están protegidos. Ninguna parte de este libro no puede ser publicada o divulgada en cualquier manera o por cualquier artificio, electrónico o mecánico, incluyendo la fotocopia, la grabación del sonido, cualquieres dispositivos o sistemas de búsqueda de la información, sin el permiso escrito del dueño de los derechos.

El libro presenta una visión general de los conocimientos contemporáneos en el campo de la flotación. El libro resume la teoría básica de la flotación, se analizan y se sistematizan los procesos básicos que ocurren en el sistema de flotación. Además todo el material está estructurado en manera cómoda para el uso por un estudiante igual que a un docente. El libro está dirigido a estudiantes de universidades y politécnicos, estudiantes de carreras, conectadas con concentración de minerales, trabajadores ingeniero-técnicos de fábricas de la flotación, científicos en organizaciones investigatorias.

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 heterogeneous 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 flotation 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