1 Digestion Mining Red side: Wearing problems Clarificatio n Crystallizati on White side: Scaling problems Calcination Dissolve bauxite in caustic soda. Remove solid residues from the liquor. Form and recover of crystals of alumina hydrate from the liquor. Convert to alumina by removing water of crystallization from the alumina hydrate. Crushing and transport Spent liquor Al 2 O 3 3H 2 O + 2NaOH 2NaAlO 2 + 4H 2 O 2NaAlO 2 + 4H 2 O Al 2 O 3 •3H 2 O + 2NaOH Al 2 O 3 •3H 2 O Al 2 O 3 + 3H 2 O Pressure Transmitter Electro- magnetic Flow meter Smart Valve Po sitioner “azbil” Solutions for Alumina Ref ining Plant Special Control Valve Integrated Open DCS
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1 Digestion Mining Red side: Wearing problems Clarification Crystallization White side: Scaling problems Calcination Dissolve bauxite in caustic soda.
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DigestionMining
Red side: Wearing problems
Clarification
Crystallization
White side: Scaling problems
Calcination
Dissolve bauxite in caustic soda.
Remove solid residues from the liquor.
Form and recover of crystals of alumina hydrate from the liquor.
Convert to alumina by removing water of crystallization from the alumina hydrate.
Information systemProcess historical information user can utilize the information at any time and any accuracy depending on their work.
TechnologyControl
QualityControl
FacilityManagement
ProductionControl
OperationManageme
nt
Site performancefor Plant Manager
Production performancefor Production Engineer
Process performancefor Shift Leader
PREXION – For production monitoring
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Alarm Analyst - Correlation analysis
Correlation Analysis;-Easy to build Knowledge-Base alarm & event
model… unique technology
From alarm & event historical logs, Correlation Analysis extracts ;- Event groups consisted of the alarms and the operation
actions in a process upset Propagation path Source origin Nuisance alarms Total counts in Alarm & Event group Information about Alarm & Event group structure Cause & Effect relationship
– Cause of alarm flood or complex operation is estimated using order of events occurrence.
Alarm Analyst R20
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1. Field replaceable electrode• Cleaning electrode can be done in the field.
MagneW3000:Solution for Scaling (adhesion problem)
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Gasket
Electrode
Liner
Spring Assembly
Replaceable electrode structure
No adhesion
New liner manufacturing technology - Patent pending
Mirror finish liner - It is proven that no adhesion occurred on the mirror finish liner surface.
Conventional type surfaceroughness
MagneW 3000PLUS surfaceroughness
MagneW3000:Solution for Scaling (adhesion problem)
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-300
-200
-100
0
100
200
300
0 1000 2000 3000 4000 5000 6000
ΔPV
μV
()
Time (hr)
AT9000(GTX): Long-term stability
Competitor A Data
azbil’s new sensor@125℃
0.10
0
-0.10
Err
or(
%F
S)
Competitor B Spec.@28℃
azbil’s new sensor has realized excellent zero-point stability.
Zero-drift @ 125℃
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For Alumina Slurry
Customers : Alumina Refining Plant
azbil Solution-oriented Control Valve
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For detailed specification, please contact the sales representative in Azbil India.
azbil Solution-oriented Control Valve
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SVP3000: High durability and stability
Isolated design between electronics and pneumatic circuits This design eliminates troubles caused by dusty and humid air quality. Instrumentation air and outside atmosphere do not come into the electronics
circuit department.
Isolated design between electronics and pneumatic circuits
Pneumaticcircuits
Electronicscircuits
Even if the atmosphere is corrosive and instrumentation air is not perfect, it does not affect the electrical part of the positioner.