Electrodewatering of Bayer muds - Laboratory studies
Research was conducted by the Bureau of Mines to determine the feasibility of using electrokinetic densification to dewater Bayer process red mud, magnetic black and prepared by pressure digestion of red mud in the presence of ferrous sulfate, and magnetic black mud formed by simulated Bayer digestion of Jamaican bauxite with added ferrours sulfate. Tests showed that the solids content of presettled muds could be increased from 25 pct to approximately 40 to 48 pct by gravity draining followed by electrodewatering for approximately 48 h. Electrodewatering may not be practical because of increased reagent and processing costs and because the muds must be thoroughly wasted prior to electrodwatering to remove dissolved ions and decrease mud conductivities.
- OSTI ID:
- 6691153
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
SLURRIES
WATER REMOVAL
BAUXITE
BENCH-SCALE EXPERIMENTS
CAPITALIZED COST
CHEMICAL PREPARATION
COMPRESSION
DEHYDRATION
DISSOLUTION
ELECTRIC CONDUCTIVITY
ELECTROLYSIS
FEASIBILITY STUDIES
IRON SULFATES
MAGNETIC MATERIALS
REAGENTS
ALUMINIUM ORES
COST
DISPERSIONS
ELECTRICAL PROPERTIES
IRON COMPOUNDS
LYSIS
MATERIALS
MIXTURES
ORES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
REMOVAL
SULFATES
SULFUR COMPOUNDS
SUSPENSIONS
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
400201* - Chemical & Physicochemical Properties