palabora pa reference
TRANSCRIPT
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PalaboraSouth Africa
PROFIBUS-PAApplication Palabora Mining
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PROFIBUS-PAApplication
Palabora Mining
THE DECISION TO GO UNDERGROUND
When open pit copper minig commenced at
Palabora in 1966, the mine was planned to
operate for 20 years only.
However, increases in the production rate and
the resulting economies of scale led to the cut-
off grade being decreased. This in turn allowed
a total of five extensions of the mine life. Open
pit operations are now sheduled to the end of
the year 2002
Studies show that the orebody continues below the bottom of the final open pit shell and is open at
depth. Over one kilometre of this orebody is calssified as proven reserves and studies to assess the
economic feasability of extracting the ore have been underway since as early as 1979. After over a
decade of investigation by a team of international specialists renowned for their expertise in this
field, the following conclusion was reached: An underground mine, utilising block caving toextract 30 000 tons of ore per day, provided an economically viable way to obtain maximum
utilisation of exsisting ore deposits.This will extend the life of Palabora Mining Company by at
least another 20 years.
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PROFIBUS-PAApplication
Palabora Underground Mining Project
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PROFIBUS-PAApplication
Palabora Underground Mining Project
Auxiliaries: 1st Phase Refrigeration Plant
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PROFIBUS-PA
Auxiliaries:
1st Phase
Refrigeration Plant
Application
Palabora Underground Mining Project
The Palabora surface refrigeration system comprisesof a precooling tower system cooling 210 l/s of
make up water which is supplied to three mechanicalrefrigeration plans of 18 MW refrigeration capacity.
The refrigeration is utilised to cool 516 m/s of ambientair to 14,6 C, and to supply 60 l/s 24 hour average 1C
water to the mine for service water use.
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PROFIBUS-PA
1st Phase:
Refrigeration Plant
and Conveyor Belts
Application
Palabora Underground Mining Project
Siemens
ET 200
Remote I/O
DanfossAC Motor
Speed
Controller
ASI
Switches
DP/ASI-Link
Visualisation
WinCC
Control
SIMATIC S7
Siemens
Control System
PCS 7
fibre optical Industrial Ethernet
PROFIBUS-DP Fibre Optical
Samson
Control
Valve Cerabar S
Mycom L
Promag 3 3
Deltabar
3 Ammonia Refrigerators
TMD 834
Deltapilot S
ConveyorBelts
Segmentcoupler Brkert
Solenoid
Valves
PROFIBUS-PA
IEC 1158-2
Engineering
COMMUWIN II
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PROFIBUS-PA
Endress+Hauser Transmitters
Application
Palabora Underground Mining Project
Level
18x Deltapilot S8x Prosonic
Pressure
13x Cerabar S28x Deltabar S
Temperature
61x TMD 834
Flow
17x Promag 33
3x Promass 63Analysis
2x Mycom L
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PROFIBUS-PAApplication
Palabora Underground Mining Project
Proximity Switches
Other instruments
Control Valves
Solenoid Valves
Pressure Switches
Flow Switches
Level Switches
Position Switches
Flow control with Samson Control Valvesand E+H Coriolis Massflowmeter Promass 63
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PROFIBUS-PA
Distributed Control
Application
Palabora Underground Mining Project
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PROFIBUS-PA
Johan Venter, Project Manager and responable for the whole electronicalinstallations (including Measurement and Control):
"The whole project will be finalized in 2002. Then the mine life is expectedfor another 20 years until 2023. it is obvious that we have to rely on todays
latest technology to have a modern plant also in 2023. On the other handthe technology must be proven and reliable. PROFIBUS, established since1990, meets perfectly all these requirements. So that all our instruments inthe field will be able to 'talk to us' via PROFIBUS."
Application
Palabora Underground Mining Project
Why Palabora chosePROFIBUS:
Tremendous cost savingson installation
Online accesss to the wholeinstallation (inc. Sensors and
Actuators) from control room
Drastically reduced documen-tation and planning efforts