4ppt-Mine Life Cycle
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Transcript of 4ppt-Mine Life Cycle
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• all shapes and sizes (e.g.
surface or underground)e.g. typical medium sizedunderground mine:
•
Rs 12,000 million capital•Rs 120 million profit / year
•300 workforce
•30 year life
•10 years to find and prove
•3 years to construct
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Managed:•profitably (influencedby market forces)
•responsibly and safely
•committed toworkforce, community,
environment
•driven by geologists &engineers
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discovery,
development,
production,
closure,reclamation
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Artist’s impression of planned open pit and mill.
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Artist’s impression of eventual reclaimed mine site.
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Surface coal mining operations, loading coal andloading waste rock,.
Cable shovel, front end loaders,off-highway truck, bulldozers,
supervisor’s truck
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Room and Pillar Mining Method
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DESIGN, SELECT SCALE & TECHNOLOGY
WASTE
MANAGEMENT
CLOSURE INFRASTRUCTURE
SERVICES
HUMAN
RESOURCES
FEASIBILITY?
TECHNICAL ECONOMICAL
NO
ENVIRONMENTAL SOCIAL POLITICAL
NO SUSTAINABLE
YES
PLAN & SCHEDULE
SELECT MINING (MILLING) METHOD
LOCATE & DEFINE DEPOSIT
EXPLORATION
MINE BUILDING:
IN PRINCIPLE
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Mineral Deposits
•Geology
•
Mineralogy•Mining Method
•Mineral Processing
•Economics
•Environmental controls
Finding
•Regional Geology
•Geochemistry
•Geophysics
•Drilling
•Sampling
Opening &Developing
•Shaft sinking
•Tunneling
•Waste removal
•Underground &surface construction
Planning
•Select Mining Method
•Design ExcavationGeometry, Size,Sequence
•Select equipment
Proving
•
Delineation drilling•Shaft/tunneling
•Ore Estimation
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Mining
•Fragmentation
•
Loading•Materials Handling
•Production Control
•Maintenance
•Health & Safety
•Ventilation
•Water Control
•Grade Control
•Reclamation
Geology Sampling
•Surveying
•Ground Control
•Design & Engineering
•Supply Services
•Power
•Human Resources
Ore forProcessing
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Processing
Conversion of mineralraw products toconsumer products
•Classification
•Beneficiation
•Smelting & Refining
•Material Science
•Properties & uses ofmineral products
•Sales
•
Size Reduction•Concentration
•Mill & Plant Design
•Environmental Control
Marketing
Products for fabricationor other end uses
•Establish Grades
•
Specifications &Standards
•Transport toCustomers
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Mineral Deposits and Orebodies
• A Mineral Deposit is a
geologic occurrence
of minerals in
relatively
concentrated form.
• An Orebody is a
Mineral Deposit that
has sufficient value
that it can be mined
at a profit.
Mineral
Deposit Ore Body
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Orebody: Grade, Size, Shape, Depth
Topography
Climate
Market Conditions
Appropriate Technology
Environmental, Social Issues
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•
How much waste rock is mined with
the ore.
•
How much of the orebody cannot be
recovered
•
• impact
measures