UNIVERSITY OF SOUTH AUSTRALIA Mine Equipment Design, Selection and Maintenance RENG 4023

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UNIVERSITY OF SOUTH AUSTRALIA  Mine Equipment
Design, Selection and MaintenanceRENG 4023
Matthew Hart 00017885R

• Electrical Machinery In Mining

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Electrical Machinery used in mining

• Electric motors (Used in all areas)
• Drills (jumbos and Simbas)
• Electric LHD
• Electric Trucks
• Crushers
• Conveyors
• Ventilation Fans
• Shovels
• Winders
• Pumps
• Locos
• Computers

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Electric Motors

• Direct Current.
• I. Separately excited.
• 2. Series-wound constant current.
• 3. Series-wound constant potential.
• 4. Series-wound interdependent current and
  potential.
• 5. Shunt-wound constant potential.
• Alternating Current.
• 1. Synchronous constant potential.
• 2. Induction-polyphase constant potential.
• 3. Induction-monophase constant potential.
• 4. Repulsion-commutating.
• 5. Series-commutating.

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Jumbos

• Production
• Bolting
• Stope drilling

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Electric LHD and Trucks

• The LHD consists of a Random Wrap Cable Reel with
  Automatic Tension Control, 50 or 60Hz, 380 to
  1000 Volts Supply, and runs from a reliance
  electric 3-phase motor.
• Kiruna offers an electric truck offering all the
  characteristics of the traditional diesel powered
  Truck.

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Crushers

• Cone crusher
• Jaw crusher
• Rolls crusher
• Rod Mill

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Conveyors

• Transportation
• Electric motors
• example - NSW, on a coal mine, with a conveyor
  around 12 km which is driven by two AC wound
  rotor motors of 1500kW controlled by liquid
  rheostat controllers.

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Ventilation Fans

• Axial Fans
• Centrifugal
• Surface fans
• Booster fans

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Shovels

• Large capacity

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Winders

• Various uses
• Powered my electric motors
• In Peak gold mines in Cobar NSW, they are running
  a 815kW mine winder drive and control system,
  while Pasminco NBHC in Broken Hill, NSW, they are
  running a 3000kW mine winder.

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Pumps and Compressors

• Compressors supply air to mine
• Pumps used for pumping in
• Metallurgy plant
• Tailings
• Other

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Locomotives

• Uses in UG mining
• Generally operated via a computer or radio
  control or onboard personnel, and run via a DC to
  VAC inverter.

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Computers

• Uses in mining

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Conclusion

• Why we need electricity?