Alumina production line processes bauxite ore into alumina Al₂O₃ for wide industrial applications.
The production relationship is about 4 tons bauxite ore to 2 tons alumina to 1 ton electrolytic aluminum.
Sintering process includes bauxite crushing, stacking, reclaiming, raw meal grinding, slurry preparation, clinker burning, red mud separation, decomposition, filtration, evaporation, and calcination.
Bayer process includes ore supply, raw material preparation, single-tube digestion, settling washing, decomposition system, evaporation system, and calciner.
Combined process includes crushing, material stacking, raw fuel conveying, causticization, raw material grinding, lime kiln, desilication, and compressor system.
Abrasives and Grinding Materials
Aerospace Materials
Alumina Production
Aluminum Industry
Bauxite Processing
Ceramic Materials
Glass Manufacturing
Metallurgical Industry
Refractory Materials
Semiconductor Materials
The alumina production line converts bauxite ore into alumina through crushing, raw material preparation, digestion, separation, decomposition, filtration, evaporation, and calcination.
Optimized raw material grinding, slurry preparation, evaporation, and calcination help improve production efficiency and reduce unnecessary energy consumption.
The production line can be configured with controlled material conveying, slurry preparation, digestion, decomposition, filtration, evaporation, dust collection, and calcination systems
The process can be designed according to the selected route, including sintering production line, Bayer process production line, or combined alumina production line.
Bauxite ore is crushed before entering the alumina production process.
The crushed bauxite is homogenized to improve raw material uniformity.
The homogenized material is prepared and mixed for the next processing stage.
The prepared slurry is classified by hydrocyclone to control particle size.
Silica-related impurities are reduced before digestion.
The classified slurry is digested under high pressure to dissolve alumina-bearing components.
The digested slurry is diluted to prepare it for separation and downstream treatment.
Red mud is separated from the slurry, and the liquor continues for further processing.
The liquor is filtered and decomposed to promote alumina hydrate formation.
The product stream passes through classification, product filtration, product washing, filter cake handling, and finishing to obtain finished alumina.
Get detailed flow diagrams, equipment specifications, and design guidelines
The file states that about 4 tons of bauxite ore produce 2 tons of alumina and then 1 ton of electrolytic aluminum.
The production line can be arranged as sintering process, Bayer process, or combined alumina production process
Alumina can be used for pure aluminum refining, semiconductors, glass, metal products, refractory materials, abrasives, polishing agents, and artificial gemstones.
The process can cover crushing, conveying, grinding, slurry preparation, digestion, separation, filtration, evaporation, and calcination.
Our experienced engineers can design a custom solution to increase your processing capacity and reduce operational costs
