Mining waste reduction methods
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MIN-NOVATION Mining and Mineral Processing Waste Management Innovation Network
Mining Waste Reduction Methods
PhD Veiko Karu, Tallinn University of Technology, Department of Mining
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PROJECT PARTNERSHIP
Mapa do wklejenia
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STUDY TRIPS
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PROJECT GOALS
Bringing mining sector stakeholders together
Promoting innovative approaches to mining waste prevention, recovery, recycling and re-use
Pursuing cross-regional initiatives
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• ESTONIA
• Mobil installation for recovery waste from oil shale and limestone mining
• FINLAND
• Lab for mining and processing waste research
• POLAND
• Installation for recovering waste from coal mining
• SWEDEN
• Mobil installation for recovering of different solid waste materials (slags,
alum shale residues, fly ashes)
PROJECT PILOT UNITS
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MIN-NOVATION Mining and Mineral Processing Waste Management Innovation Network
PILOT INVESTMENT FOR ESTONIA
“Waste-to-product mobile unit”
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Oil shale waste rock
Oil shale for oil or electricity
Limestone for aggregate or backfilling
Pilot unit
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THE PRINCIPLE OF OPERATION Crushing bucket
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THE PRINCIPLE OF OPERATION Mini wheelloader
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THE PRINCIPLE OF OPERATION Sieving unit
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Enrichment unit for oil shale
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Mini beltconveyor
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MIN-NOVATION Mining and Mineral Processing Waste
Management Innovation Network
PILOT INVESTMENT FOR POLAND
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1 – wastes charger
2 – crusher conveyor
3 – retaining construction
4 – impact crusher
5 – vibrating screens
6,7,8,9 – belt conveyors
10 – product containers
11 – de-dusting system
INSTALLATION PROJECT
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Impact crusher M5:
• Capacity 1,5 tph
• Power 7,5 kW
• 1000 RPM
INSTALLATION PROJECT
• Wastes loaded from waste stockpile by loader to charger
• From charger material is directed to impact crusher M5
• After crushing material is led to two-deck vibrating screens
• Fraction >31.5 mm is redirected to impact crusher
• Fraction 5-31.5 mm (final product) is put to product container
• Fraction 0-5 mm („Secondary waste”) is directed to second container
• Product containers periodically cleared to product stockpiles
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WP 5 Pilot investment by Örebo Univ. (P4)
A mobile unit for recovery of metals from various categories of mining waste and metal-rich process residues (1) Crushing/milling (2) Leaching (3) Recovery of elements from solution in sequence: • A combination of a jaw crusher and another type of mill
crushing the waste down to roughly 0.1 mm. • A leaching apparatus designed to leach (using manipulated
water solutions) solid waste using high pressure and temperature.
• A mixer-settler unit for recovery of metals by using liquid/liquid extraction
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WP 5 Pilot investment by Örebo Univ. (P4)
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MIN-NOVATION Mining and Mineral Processing Waste
Management Innovation Network
FINNISH PILOT INVESTMENT
Kainuun Etu Ltd
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DISCRIPTION
crushing grinding screening sieving flotation
filtering fine grading
crushing grinding screening sieving flotation
filtering fine grading
Thermodymanic reactions, material optimization, chemical
characterization, material modification…
K
AJA
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MIN
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THE PRINCIPLE OF OPERATION - ELEMENTS AND CAPACITY
Elements of investment (by now)
Capasity: so far only preliminary experiences . XRF: 20 min / sample; TGA-DT, DSC: 3 samples / shift, furnace: 1 heating / 1 kg / shift.
XRF MiniPal4 for chemical characterization of the samples
Chamber furnace for material modification
TGA-DT, DSC for thermodynamic reactions and material optimization
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WAYS TO KEEP INFORMED ABOUT MIN-NOVATION
Sign up for Min-Novation newsletters
Join the Min-Novation Linked-In group
Min-Novation conference at the end of 2013 in Poland
Contact project manager: [email protected]
or communication officer: [email protected]
See Min-Novation website: www.min-novation.eu