4. EXISTING WAGERUP REFINERY 4.1 ALUMINA REFINING
Alcoa World Alumina Australia Page 53 Ref: ERMP Wagerup Unit 3 May 05 ENVIRON 4. EXISTING WAGERUP REFINERY 4.1 ALUMINA REFINING PROCESS As with the majority of other commercial alumina refineries throughout the world, the Wagerup refinery uses the Bayer process to refine alumina from bauxite ore. This involves a number of key steps, including:
Bayer process Wikipedia
The Bayer process is the principal industrial means of refining bauxite to produce alumina (aluminium oxide) and was developed by Carl Josef Bayer. Bauxite, the most important ore of aluminium, contains only 30–60% aluminium oxide (Al2O3), the rest being a mixture of silica, various iron oxides, and titanium dioxide. The aluminium oxide must be purified before it can be refined to aluminium metal.
Bayer Process an overview ScienceDirect Topics
Alton T. Tabereaux, Ray D. Peterson, in Treatise on Process Metallurgy: Industrial Processes, 2014 2.5.1.1 Impact of Different Bauxites on the Bayer Process. The Bayer process is basically used for the extraction of aluminum hydrate from the bauxite ores with the mass ratio of alumina to silica (A/S) above 9. The sinter process is widely used to process the poor-grade diasporic bauxite ores
Identification and Description of Mineral Processing
Facility Name Location Process Methods ALCOA Point Comfort, TX Bayer Kaiser (1992 alumina prod. was 1.06 mt4) Gramercy, LA Bayer Martin St. Croix, VI Bayer Ormet Burnside, LA Bayer Reynolds Corpus Christi, TX Bayer
Bauxite Mining and Alumina Refining: Process Description
PROCESS DESCRIPTION: ALUMINA REFINING. The bauxite ore contains aluminum trihydrate (Al(OH) 3). Alumina refining produces alumina (Al 2 O 3) from the bauxite ore, by exploiting the reversible reaction of the Bayer process 1–3: The reaction is firstly driven in the sodium aluminate (NaAlO 2) direction by the addition of caustic soda (NaOH) to
5. WAGERUP REFINERY UNIT 3 PROPOSAL DESCRIPTION 5
5. WAGERUP REFINERY UNIT 3 PROPOSAL DESCRIPTION 5.1 PROPOSAL OVERVIEW The proposed expansion at Wagerup refinery involves the addition of a third production unit to the two units currently operating, which will almost double production capacity. The Proposal will replicate the existing Bayer process steps from bauxite grinding through to
A Study of the Influences of Bayer Process Impurities on
Alumina, AlgOj, Is obtained principally via the Bayer process from bauxite, an ore formed by the weathering of aluminum-bearing rocks. In essence, the Bayer process consists of digesting bauxite In a concen trated solution of caustic soda (NaOH) at elevated temperatures to yield
Works Approval Application Supporting information Pinjarra
Alcoa of Australia Limited 4 . 2.1. Oxalate Bioremoval process description . The process flow diagram for the Oxalate Bioremoval Facility is shown in Figure 1, excluding the proposed third bioreactor unit. There are two ways oxalate is transferred to the Plant Oxalate Storage Tank; oxalate is either removed from the Bayer process through existing
Red mud Wikipedia
Red mud, formally termed bauxite residue, is an industrial waste generated during the processing of bauxite into alumina using the Bayer process.It is composed of various oxide compounds, including the iron oxides which give its red colour. Over 95% of the alumina produced globally is through the Bayer process; for every tonne of alumina produced, approximately 1 to 1.5 tonnes of red mud are
KWINANA LIQUOR BURNER EMISSIONS REDUCTION PROJECT
throughout the Bayer alumina refining process (such as flocculants). Over time, the level of organics builds up in the recycled caustic liquor circuit, reducing the efficiency of the precipitation process and hence alumina production, and adversely affecting the quality of the alumina product. The bauxite
4. EXISTING WAGERUP REFINERY 4.1 ALUMINA REFINING
Alcoa World Alumina Australia Page 53 Ref: ERMP Wagerup Unit 3 May 05 ENVIRON 4. EXISTING WAGERUP REFINERY 4.1 ALUMINA REFINING PROCESS As with the majority of other commercial alumina refineries throughout the world, the Wagerup refinery uses the Bayer process to refine alumina from bauxite ore. This involves a number of key steps, including:
Bayer process Wikipedia
The Bayer process is the principal industrial means of refining bauxite to produce alumina (aluminium oxide) and was developed by Carl Josef Bayer. Bauxite, the most important ore of aluminium, contains only 30–60% aluminium oxide (Al2O3), the rest being a mixture of silica, various iron oxides, and titanium dioxide. The aluminium oxide must be purified before it can be refined to aluminium metal.
Bayer Process an overview ScienceDirect Topics
Alton T. Tabereaux, Ray D. Peterson, in Treatise on Process Metallurgy: Industrial Processes, 2014 2.5.1.1 Impact of Different Bauxites on the Bayer Process. The Bayer process is basically used for the extraction of aluminum hydrate from the bauxite ores with the mass ratio of alumina to silica (A/S) above 9. The sinter process is widely used to process the poor-grade diasporic bauxite ores
Identification and Description of Mineral Processing
Facility Name Location Process Methods ALCOA Point Comfort, TX Bayer Kaiser (1992 alumina prod. was 1.06 mt4) Gramercy, LA Bayer Martin St. Croix, VI Bayer Ormet Burnside, LA Bayer Reynolds Corpus Christi, TX Bayer
Bauxite Mining and Alumina Refining: Process Description
PROCESS DESCRIPTION: ALUMINA REFINING. The bauxite ore contains aluminum trihydrate (Al(OH) 3). Alumina refining produces alumina (Al 2 O 3) from the bauxite ore, by exploiting the reversible reaction of the Bayer process 1–3: The reaction is firstly driven in the sodium aluminate (NaAlO 2) direction by the addition of caustic soda (NaOH) to
5. WAGERUP REFINERY UNIT 3 PROPOSAL DESCRIPTION 5
5. WAGERUP REFINERY UNIT 3 PROPOSAL DESCRIPTION 5.1 PROPOSAL OVERVIEW The proposed expansion at Wagerup refinery involves the addition of a third production unit to the two units currently operating, which will almost double production capacity. The Proposal will replicate the existing Bayer process steps from bauxite grinding through to
A Study of the Influences of Bayer Process Impurities on
Alumina, AlgOj, Is obtained principally via the Bayer process from bauxite, an ore formed by the weathering of aluminum-bearing rocks. In essence, the Bayer process consists of digesting bauxite In a concen trated solution of caustic soda (NaOH) at elevated temperatures to yield
Works Approval Application Supporting information Pinjarra
Alcoa of Australia Limited 4 . 2.1. Oxalate Bioremoval process description . The process flow diagram for the Oxalate Bioremoval Facility is shown in Figure 1, excluding the proposed third bioreactor unit. There are two ways oxalate is transferred to the Plant Oxalate Storage Tank; oxalate is either removed from the Bayer process through existing
Red mud Wikipedia
Red mud, formally termed bauxite residue, is an industrial waste generated during the processing of bauxite into alumina using the Bayer process.It is composed of various oxide compounds, including the iron oxides which give its red colour. Over 95% of the alumina produced globally is through the Bayer process; for every tonne of alumina produced, approximately 1 to 1.5 tonnes of red mud are
KWINANA LIQUOR BURNER EMISSIONS REDUCTION PROJECT
throughout the Bayer alumina refining process (such as flocculants). Over time, the level of organics builds up in the recycled caustic liquor circuit, reducing the efficiency of the precipitation process and hence alumina production, and adversely affecting the quality of the alumina product. The bauxite