1 Introduction 1．1 Brief History of Research and Application of Flotation and Reagents 1．2 Classification and Significance of Flotation Reagents 1．2．1 Classification of Flotation Reagents According to Their Uses 1．2．2 Classification of Flotation Reagents According to Their Roles 1．2．3 Classification of Flotation Reagents According to Their Structures 1．2．4 Classification of Flotation Reagents According to Their Chemical Constituents 1．2．5 Classification of Flotation Reagents According to Characteristics of Coordination Chemistry References 2 Interaction Between Minerals and Reagents 2．1 Various Theories on Interaction Between Collectors and Minerals 2．1．1 Main Interactions Between Collector and Mineral 2．1．2 Adsorption Models of Collector on Mineral 2．2 Adsorption Equation of Flotation Reagent on Mineral Surface 2．2．1 Adsorption Isotherm Model 2．2．2 Adsorption Isotherm of Flotation Reagent on Mineral Surface 2．2．3 Adsorption Kinetics Equation of Flotation Reagent on Mineral Surface 2．3 Structure of Adsorption Film and Flotation Behavior of Mineral 2．3．1 Structure of Adsorbed Layer 2．3．2 Relationship of Collector Adsorption and Mineral Flotation 2．4 Mineral Structure， Bonding Characteristics， and the Reaction of Reagents 2．4．1 Geochemical Classification of Mineral Elements and Their Interaction With reagent 2．4．2 Structure and Valence Bond of Mineral and Their Reactions with Reagents References 3 Structure and Property of Polar Group of Collector 3．1 Structural Characteristics of Collector Molecule and Independent Effect of Chemical Groups Belong to Surface Chemistry 3．2 Effect of Polar Group Structure on Dissociation of Reagent and Adsorption in Electrical Double Layer of Mineral Surface 3．2．1 Dissociation of Collector and Its Flotation Function． 3．2．2 Zero Charge Point of Mineral and Dissociation Constant of Collector， and Their Interrelation in Flotation 3．2．3 Adsorption of Amphoteric Collector in Electric Double Layer 3．2．4 Effect of Polar Group Structure on Dissociation of Collector 3．3 Molecular Structure of Nonionic Reagent and Adsorption by van der Waals Force 3．3．1 van der Waals Force Between Collector Molecules．． 3．3．2 Relation between Reagent Molecular Structure and van der Waals Force 3．3．3 Hydrogen Bonding Adsorption of Reagent 3．4 Polar Group Structure and Chemisorption 3．4．1 Common Solidophilic Atoms in Polar Group 3．4．2 Bonding Capability of Solidophilic Atoms 3．5 Inductive Effect in Polar Group of Collector 3．5．1 Introduction of Inductive Effect 3．5．2 Inductive Effect in Xanthate Molecule 3．5．3 Inductive Effect in Thionocarbamates Molecule as Collector [9] 3．5．4 Inductive Effect in Aerofloat Collector Molecule 3．5．5 Comparison of Inductive Effect in Xanthate， Dithiocarbamate， and Aerofloat 3．5．6 Inductive Effect in Collector of Nonsulfide Minerals 3．6 Conjugative Effect in Polar Group of Collector 3．6．1 Introduction of Conjugative Effect 3．6．2 Conjugative Effect in Xanthate Molecule 3．6．3 Conjugative Effect in Aromatic Collector 3．7 Polar Group of Coordinating Collector 3．7．1 Major Features of Coordinating Collector 3．7．2 Structure and Property of Polar Group of Coordinating Collector 3．7．3 Functional Mechanism of the Coordinating Collector 3．7．4 Classification of the Coordinating Collector References 4 Structure and Property of Nonpolar Group of Collector 5 Structure Relationship Between Polar and NonPolar Group in Collector Molecule 6 Theoretical Criteria and Calculation for Collector Performance 7 Structure and Performance of Frother 8 Structure and Performance of Organic Depressant 9 Structure and Performance of Flocculant 10 Molecular Design of Reagents for Mineral Processing
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