LEADER 05086nam 2200625 450 001 9910463432003321 005 20200520144314.0 010 $a1-62870-312-1 010 $a0-87335-392-7 035 $a(CKB)2670000000491057 035 $a(EBL)1576489 035 $a(SSID)ssj0001060626 035 $a(PQKBManifestationID)12434280 035 $a(PQKBTitleCode)TC0001060626 035 $a(PQKBWorkID)11087833 035 $a(PQKB)11441575 035 $a(MiAaPQ)EBC1576489 035 $a(Au-PeEL)EBL1576489 035 $a(CaPaEBR)ebr10815845 035 $a(OCoLC)865334407 035 $a(EXLCZ)992670000000491057 100 $a20131217d2014 uy 0 101 0 $aeng 135 $aur|n|---||||| 181 $ctxt 182 $cc 183 $acr 200 10$aBeneficiation of phosphate ore /$fby S. Komar Kawatra and J.T. Carlson 210 1$aEnglewood, Colorado :$cSociety for Mining, Metallurgy and Exploration,$d2014. 210 4$dİ2014 215 $a1 online resource (170 p.) 300 $aDescription based upon print version of record. 311 $a0-87335-391-9 320 $aIncludes bibliographical references and index. 327 $aCover; 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 327 $a3: 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 327 $a3.4 Proposed Alternatives to the Crago Double Float Process3.4.1 Reverse Crago Process; 3.4.2 All-Anionic (Fatty Acid/Fuel Oil Collector) 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 327 $a4.3 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 327 $a4.4.5 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 327 $a4.6.3 Selective Flocculation for the Removal of Dolomite from Phosphate Ores 330 $aBeneficiation 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. 606 $aPhosphates 606 $aOre-dressing 608 $aElectronic books. 615 0$aPhosphates. 615 0$aOre-dressing. 676 $a622/.7 700 $aKawatra$b S. Komar$0957537 801 0$bMiAaPQ 801 1$bMiAaPQ 801 2$bMiAaPQ 906 $aBOOK 912 $a9910463432003321 996 $aBeneficiation of phosphate ore$92168843 997 $aUNINA LEADER 03005nam 2200469 450 001 9910814669303321 005 20221214010934.0 010 $a0-87353-911-7 035 $a(CKB)4940000000606207 035 $a(MiAaPQ)EBC6612974 035 $a(Au-PeEL)EBL6612974 035 $a(OCoLC)1251448700 035 $a(EXLCZ)994940000000606207 100 $a20220601d2014 uy 0 101 0 $aeng 135 $aurcnu|||||||| 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aDeveloping essential understanding of geometry and measurement for teaching mathematics in grades 3-5 /$fRichard Lehrer and Hannah Slovin 210 1$aReston, Virginia :$cNational Council of Teachers of Mathematics,$d[2014] 210 4$dİ2014 215 $a1 online resource (104 pages) 311 $a0-87353-669-X 320 $aIncludes bibliographical references. 330 $aHow can you introduce terms from geometry and measurement so that your students' vocabulary will enhance their understanding of concepts and definitions? What can you say to clarify the thinking of a student who claims that perimeter is always an even number? How does knowing what changes or stays the same when shapes are transformed help you support and extend your students' understanding of shapes and the space that they occupy?How much do you know ... and how much do you need to know?Helping your students develop a robust understanding of geometry and measurement requires that you understand fundamental statistical concepts deeply. But what does that mean?This book focuses on essential knowledge for mathematics teachers about geometry and measurement. It is organized around three big ideas, supported by multiple smaller, interconnected ideas--essential understandings. Taking you beyond a simple introduction to geometry and measurement, the book will broaden and deepen your understanding of one of the most challenging topics for students--and teachers. It will help you engage your students, anticipate their perplexities, avoid pitfalls, and dispel misconceptions. You will also learn to develop appropriate tasks, techniques, and tools for assessing students' understanding of the topic.Focus on the ideas that you need to understand thoroughly to teach confidently. 606 $aMathematics$xStudy and teaching (Primary) 606 $aGeometry$xStudy and teaching (Elementary) 606 $aGeometry$xStudy and teaching (Primary) 615 0$aMathematics$xStudy and teaching (Primary) 615 0$aGeometry$xStudy and teaching (Elementary) 615 0$aGeometry$xStudy and teaching (Primary) 676 $a372.76049 700 $aLehrer$b Richard$01627706 702 $aSlovin$b Hannah 801 0$bMiAaPQ 801 1$bMiAaPQ 801 2$bMiAaPQ 906 $aBOOK 912 $a9910814669303321 996 $aDeveloping essential understanding of geometry and measurement for teaching mathematics in grades 3-5$94098564 997 $aUNINA