Developing technology for sustainable crushing and screening

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Developing technology for sustainable crushing
and screening

• Tuula PuhakkaSVP, Business Development and
  Marketing
• Mining and Construction Technology
• Metso

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Metso Minerals performance and strategy
May 29, 2008 Matti Kähkönen President, Metso
Minerals
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Metso Corporation
A global engineering and technology corporation
with main customer industries in pulp and paper,
rock and minerals processing, and energy.

• Net sales EUR 6.3 billion (2007)
• Employees 26,800 (2007)
• Listed on the Helsinki Stock Exchange

Metso Paper
Metso Minerals
Metso Automation
Net sales EUR 2.9 billion
Net sales EUR 2.6 billion
Net sales EUR 0.7 million

• Customers
• Mechanical and chemical pulp producers
• Paper, tissue and board producers
• Power producers
• Board industry

• Customers
• Mining industry
• Quarries and contractors
• Construction industry
• Recycling of metals and construction materials
  industry

• Customers
• Mechanical and chemical pulp producers
• Paper and board producers
• Power, oil and gas industries

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Our solutions portfolio serves our customers
environmental challenges
Metso EnvironmentalTechnology
CleanTechnology
Materials efficiency
Energy-efficiency
Process optimization
Water management
Waste management and recycling
Environmentalconsulting andmeasurements
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Sustainability in mobile crushing and screening
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Customer needs for improved sustainability On a
crushing and screening plant

• Safety of plant operators
• Noise and dust emissions
• Waste
• Energy consumption
• Soil and water contamination
• Reducing transportation
• On-site recycling of demolition waste
• Reducing investment costs

Metso participates in compiling the terms,
definitions and safety requirements for the new
ISO/DIS 21873 standard Building construction
machinery and equipment - Mobile crushers, to be
published in September 2009
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Mobile crushing and screening process

• Typically multi-stage process including feeding,
  crushing, screening and conveying of crushed
  rock or demolition waste, located close to
  settlement
• Unmanned track-/wheel-mounted crushing and
  screening plants
• Manned excavator feeding in material and
  simultaneously supervising the whole process
  with a remote control
• Manned front-end loader loading off the
  aggegates pile at the end of the process
• Process runs constantly, adjustments to
  parameters done remotely

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Improved safety of plant operatorsExamples of
safety procedures

• We apply general machine safety standards
• Process display installed to excavator cabin
• Reduces the operators presence on the machine
• gt improved working safety
• Helps the operator to run the machine steadily
  and constantly loaded
• gt maximized capacity

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Improved safety of plant operatorsExamples of
safety procedures

• Hydraulic locking of the hopper walls
• Safety hazard eliminated
• Moving platform
• Safe and easy access to maintain the diesel
  engine and accessories

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Improved safety of plant operatorsExamples of
safety procedures

• Camera view
• Visual observing of the material flow
• Combined with remotely controlled hydraulic
  breaker, enables remote release of feed material
  blockage
• Feeder and crusher log
• Feed instructions more/wait/stop
• Feeder and crusher load history
• Event history

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Dust suppression High Pressure Dust Suppression
System - HPDS

• Three-stage mobile plant(Lokotrack) equipped
  with HPDS
• Water pressure 30 bar / 450 psi
• No of nozzles 20 pcs
• Water cons. 650 l/h / 170 gal/h
• Benefits vs conventional
• (4 bar / 60 psi ) suppression system
• Fine water particles elimiminate dust much more
  efficiently
• Lower water consumption, as the conventional
  system would consume about 3000 l/h / 800 gal/h
• Other dust suppression methods
• Sealed conveyor belts, screen covers and
  telescopic chutes

Observe the change
HPDS ON
HPDS OFF
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Noise reductionExamples of measures

• Features such as mufflers, noise insulated engine
  hoods, feed hopper rubber liners have been
  developed to lower noise levels
• Further noise reduction is required to improve
  working safety, and to get work permissions in
  urban areas
• Promising test results achieved with the mobile
  noise cover
• 4,24,5 dB(A) reduction
• Using rubber wear liners and covers in conveyors
• Completely sealed structures covering the whole
  process

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Reducing wasteExamples of measures

• On-site recycling of construction materials
  spares primary natural resources and saves costs
• Crushed aggregate made of demolition waste can be
  used instead of fresh gravel and rock aggregates
  e.g. for road base and foundations of buildings.
• Applying manufactured sand for construction
  reduces
• Depletion of natural sand supply
• Waste, since manufactured microfines do not need
  to be removed from fine aggregates by washing
• The amount of cement needed in concrete, and as a
  result CO2 emissions, due to the particle shape
  and microfines

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Energy consumptionExamples of measures

• Mobile crushing process reduces hauling
• On-site recycling of construction materials
  reduces transportation
• Process simulation applied for reaching the
  optimum process design ? optimized plant
  performance reduces energy consumption
• Cost per ton concept helps operators plan the
  production cycle and minimize downtime
• Wear parts with a long service life reduce
  transportation, costs and downtime

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Summary

• Increased awareness of safety and sustainability
  issues and the scarcity of natural resources has
  lead to tighter requirements for safe and
  environmentally sound technologies around the
  world
• Companies designing and providing these
  technologies must actively take part in the
  public discussion and invest in developing viable
  solutions to meet the needs
• Some of the best solutions have been developed in
  close cooperation with the plant owners and
  operators this work needs to continue
• Metso considers environmental business as core
  and we look forward to continuing the development
  work

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