Developing technology for sustainable crushing and screening

1. Developing technology for sustainable crushing and screening Tuula PuhakkaSVP, Business Development and Marketing Mining and Construction Technology Metso

2. 2

3. Metso Corporation 3

4. Our solutions portfolio serves our customers� environmental challenges 4

5. Sustainability in mobile crushing and screening

6. 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 6

7. 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 7

8. Improved safety of plant operatorsExamples of safety procedures We apply general machine safety standards Process display installed to excavator cabin Reduces the operator�s presence on the machine => improved working safety Helps the operator to run the machine steadily and constantly loaded => maximized capacity 8

9. 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 9 Hydraulic locking of the hopper walls -aikasempi meid�n ratkaisu (ja useimpien valmistajien nykyinen) edellytti kiipe�mist� koneen sivulle ja lukituskiilojen k�sinasennusta -nykyinen ratkaisu hydraulisella k�siventtiilill� turvallisestiHydraulic locking of the hopper walls -aikasempi meid�n ratkaisu (ja useimpien valmistajien nykyinen) edellytti kiipe�mist� koneen sivulle ja lukituskiilojen k�sinasennusta -nykyinen ratkaisu hydraulisella k�siventtiilill� turvallisesti

10. 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 10

11. 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 11

12. 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: 4,2�4,5 dB(A) reduction Using rubber wear liners and covers in conveyors Completely sealed structures covering the whole process 12

13. 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 13

14. 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 14

15. 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 15