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1. |
Record Nr. |
UNINA9910463432003321 |
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Autore |
Kawatra S. Komar |
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Titolo |
Beneficiation of phosphate ore / / by S. Komar Kawatra and J.T. Carlson |
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Pubbl/distr/stampa |
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Englewood, Colorado : , : Society for Mining, Metallurgy and Exploration, , 2014 |
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©2014 |
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ISBN |
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1-62870-312-1 |
0-87335-392-7 |
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Descrizione fisica |
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1 online resource (170 p.) |
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Disciplina |
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Soggetti |
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Phosphates |
Ore-dressing |
Electronic books. |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Description based upon print version of record. |
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Nota di bibliografia |
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Includes bibliographical references and index. |
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Nota di contenuto |
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Cover; Title Page; Copyright; Contents; List of Figures; List of Tables; Preface; 1: Introduction; 1.1 Feed Requirements for Phosphoric Acid Production; 1.2 Phosphate Rock Production Statistics and Reserves; 2: Sources of Phosphate Rock; 2.1 Common Phosphate Minerals; 2.1.1 Apatite; 2.1.2 Francolite; 2.1.3 Collophane; 2.1.4 Dahllite; 2.2 Common Gangue Minerals; 2.1.1 Clays; 2.2.2 Quartz; 2.2.3 Dolomite; 2.2.4 Calcite; 2.3 Mineralogy of Sedimentary Phosphates; 2.4 Mineralogy of Igneous Phosphates; 2.5 Mineralogy of Biogenic (Island) Deposits |
3: Beneficiation of Siliceous Sedimentary Phosphate Ores3.1 Flotation Feed Preparation-Washing, Sizing, and Desliming; 3.1.1 Industrial Phosphate Washing Plant; 3.2 Theory of Phosphate Flotation; 3.2.1 Froth Flotation Devices; 3.2.2 Contact Angle Theory; 3.2.3 Entrainment Theory; 3.2.4 Surface Properties and Water Chemistry of Siliceous Phosphates; 3.3 Crago Double Float Process; 3.3.1 Stage 1-Anionic Fatty Acid/Fuel Oil Phosphate Flotation; 3.3.2 Stage 2-Cationic Amine Silica Flotation; 3.3.3 Industrial Flotation Plant for Siliceous Sedimentary Phosphate Ores |
3.4 Proposed Alternatives to the Crago Double Float Process3.4.1 Reverse Crago Process; 3.4.2 All-Anionic (Fatty Acid/Fuel Oil Collector) |
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Process; 3.4.3 All-Cationic (Amine) Process; 3.5 Conclusions from Siliceous Sedimentary Phosphate Ore Processing; 4: Beneficiation of High-MgO Sedimentary Phosphate Ores; 4.1 Mineralogy of High-MgO Sedimentary Phosphate Ores; 4.2 Acid Leaching of Carbonaceous Phosphate Ores; 4.2.1 Strong Acid Leaching; 4.2.2 Organic Acid Leaching; 4.2.3 Summary of Acid Leaching for the Removal of MgO (Dolomite, CaMg(CO3)2) from Phosphate Ores |
4.3 Thermal Decomposition (Calcination)4.3.1 Calcination Reactions and Decomposition Temperatures; 4.3.2 Quenching and Desliming of Calcined Phosphate Ore; 4.3.3 Effects of Calcination on the Reactivity of Phosphate Products; 4.3.4 Process Considerations for Calcination of Carbonaceous Sedimentary Phosphate Ores; 4.3.5 Calcination as a Method for the Removal of MgO from Phosphate Ore; 4.4 Beneficiation of Phosphate Ore by Physical Separation Methods; 4.4.1 Desliming, Attrition Scrubbing, and Sizing; 4.4.2 Sizing and Selective Crushing; 4.4.3 Heavy-Media Separation; 4.4.4 Jigging |
4.4.5 Summary of Physical Separation Methods for Removal of MgO from Phosphate Ores4.5 Flotation; 4.5.1 University of Florida Two-Stage Conditioning Process; 4.5.2 Tennessee Valley Authority Diphosphonic Acid Depressant Process; 4.5.3 U.S. Bureau of Mines Anionic Flotation Process; 4.5.4 IMC Cationic Flotation Process; 4.5.5 IMC Anionic Flotation Process; 4.5.6 Summary of Flotation for Removal of Dolomite from Phosphate Ores; 4.6 Selective Flocculation; 4.6.1 Flocculants for the Apatite/Dolomite/Silica System; 4.6.2 Factors Affecting Selectivity of Flocculation Processes |
4.6.3 Selective Flocculation for the Removal of Dolomite from Phosphate Ores |
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Sommario/riassunto |
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Beneficiation of Phosphate Ore examines various methods for processing phosphate rock, an important mineral commodity used in the production of phosphoric acid. The majority of phosphoric acid is produced by the wet process, in which phosphate rock is reacted with sulfuric acid to produce phosphoric acid and gypsum (calcium sulfate dihydrate). This wet process demands a phosphate rock feed that meets certain specifications to produce phosphoric acid efficiently and economically. |
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2. |
Record Nr. |
UNINA9910132118903321 |
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Autore |
Mill John Stuart |
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Titolo |
Systeme de logique dedutive et inductive . Livre VI : De la logique des sciences morales : expose des principes de la preuve et des methodes de recherche scientifique / / John Stuart Mill |
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Pubbl/distr/stampa |
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Chicoutimi : , : J.-M. Tremblay, , 2002 |
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ISBN |
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Descrizione fisica |
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Disciplina |
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Soggetti |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Nota di contenuto |
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Chapitre I. Remarques préliminaires. -- Chapitre II. De la Liberté et de la Nécessité. -- Chapitre III. Qu'il y a, ou peut y avoir, une Science de la Nature Humaine. -- Chapitre IV. Des Lois de l'Esprit, -- Chapitre V. De l'Éthologie, ou Science de la Formation du Caractère. -- Chapitre VI. Considérations générales sur la Science Sociale. -- Chapitre VII. De la Méthode chimique ou Expérimentale dans la Science Sociale. -- Chapitre VIII. De la Méthode Géométrique ou Abstraite. -- Chapitre IX. De la Méthode Physique, ou Déductive Concrète. -- Chapitre X. De la Méthode Déductive Inverse ou Historique. -- Chapitre XI. Autres Éclaircissements sur la Science de l'Histoire. -- Chapitre XII. Logique de la pratique ou de l'Art, comprenant la Moralité et la Politique. |
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