英文文摘
DECLARATION
CHAPTER 1: ALUMINUM INDUSTRY IN IRAN
1. 1 HISTORY OF PRIMARYALUMINIUM PRODUCTION IN IRAN
CHAPTER 2 PRINCIPLE OF ELECTROCHEMISTRY OF ALUMINIUM PRODUCTION(HALL-HEROULT PROCESS)
2.1 .INTRODUCTION
2.2 BASIC PRINCIPLES OF ELECTROCHEMISTRY
2.3 ELECTROLYSIS AND ELECTRODE CONVENTIONS
2.4 FARADAY'SLAWS
CHAPTER 3: ELECTROLYTE IN ALUMINIUM ELECTROLYSES
3.1 STRUCTURE OF THE ELECTROLYTE
3.2 DISSOLUTION OF ALUMINA
3.3 ANODIC REACTIONS
3.4 CATHODIC REACTIONS
3.5 METAL DISSOLUTION IN THE ELECTROLYTE
3.6 THE USE OF ADDITIVES: CAF2, LIF AND MGF2
3.7 ELECTROLYTE COMPOSITIONS USED INDUSTRIALLY
3.8 STABILITY OF ELECTROLYTE CHEMISTRY
3.9 LIQUIDUS TEMPERATURE
3.10 DENSITY
3.11 INTEREACIAL TENSION
3.12 VISCOSITY
3.13. THE OPTIMUM ELECTROLYTE COMPOSITION
CHAPTER 4 HEAT BALANCE IN HALL- HEROULT PROCESS
4.1 GENERAL CONSIDERATION
4.2. HEAT LOSSES FROM THE TOP AND BOTTOM OF THE CELL
4.3. HEAT LOSSES FROM THE SIDE WALLS
4.4. ENERGY REQUIREMENTS IN HALL-HEROULT PROCESS
4.5. REVERSIBLE DECOMPOSITION VOLTAGE “CALCULATION”
4.6. VOLTAGE BALANCE IN H.H .PROCESS
4.6. ENERGY BALANCE IN HALL- HEROULT PROCESS
4.7 ENERGY CONSIDERATIONS IN HALL - HEROULT PROCESS
CHAPTER 5 MAGNETIC FILED AND CELL ARRANGEMENT
5.1 INTRODUCTION:
5.2 DEFINITIONS:
5.3. MAGNETIC FIELDS IN ALUMINA REDUCTION CELLS
5.4 THE INFLUENCE OF MAGNETIC MATERIALS
5.5 MAGNETIC FIELDS
5.6. ELECTROMAGNETIC DRIVING FORCES IN MOLTEN METAL AND ELECTROLYTE
5.7. CURRENT DISTRIBUTION IN THE METAL PAD
5.8. METAL FLOW IN ALUMINA REDUCTION CELLS
5.9. VARIATION IN METAL LEVEL AND INSTABILITIES OF METAL SURFACE
5.10 BUS BAR DESIGN
CHAPTER 6 TECHNICAL SPECIFICATION AND REDUCTION PROCESS OF ALUMINIUM SMELTER WITH 175 KA IN IRAN AND IMPROVING CURRENT EFFICIENCY
6.1. INTRODUCTION
6.2. CONDITIONS SPECIFIC TO THE HALL-HEROULT PROCESS
6.3. FACTORS REDUCING THE CURRENT EFFICIENCY
6.4INFLUENCE OF CELL DESIG NAN DOPERATIONAL FACTORS ON THE RATE OF BACK REACTION
6.5. OTHER CURRENT EFFICIENCY LOSSES
6.6. SPECIFICATION OF SMELTERAND PRODUCTION PROCEDURE
6.7. PRODUCTION
6.8. MATERIAL BALANCE
6.9 POWER AND RAW MATERIAL CONSUMPTION
6.10. DETAILS OF POTS
6.11.IMPROVING CURRENT EFFICIENCY IN IRANIAN ALUMINIUM SMELTER(EXPERIMENTAL)
6.12 TEST OF INCREASING CURRENT EFFICIENCY AND TEST RESULTS
6.13 EXPERIMENTAL DESIGNS
CONCLUSION
APPENDIX
REFFERENCES
PUBLICATIONS DURING PHD STUDY PERIOD
ACKNOWLEDGMENT
RESUME