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Drilling and Blasting Loading and Hauling Crushing and Screening
Energy Efficient Quarry Model
The Energy Efficient Quarry: Towards improved understanding and optimisation of energy use and minimisation of CO2
generation in the aggregates industry
Project Coordinator Laura Sanchez [email protected] www.ee-quarry.eu CPD Training www.le.ac.uk/ee-quarry
Drilling and Blasting
Crushing and Screening
Deposit Assessment
Loading and Hauling
a) Accurate design of explosive load
b) CO2 emissions reduction using controlled blasting methods
c) Drilling multi-row shot-hole grid
a) Loading shovel b) Hauling conveyor system c) Flow-sheet from the loading and
hauling simulation tool in the EE-Quarry modelling software
a) Flow-sheet simulation for a test run of varying feed rates crushing basalt in a Jaw crusher.
b) Comparative power use by Jaw and Cone crushers
Complexities of Energy Efficiency in Aggregate Extraction Aggregate quarrying is a complex operation, characterised as four generic high-energy operations (as shown in the image to the right).
The details of each of these operations evolves continuously throughout the lifetime of the individual quarry, constrained by deposit location and deposit variability. Aggregate extraction operations are site specific.
Ian Hill ([email protected]), Toby White, Sarah Owen, and EE-Quarry Project Partners
This project has received funding from the European Union’s
Seventh Framework Programme ([FP7/2007-2013] [FP7/2007-2011])
under grant agreement no. 249807
Energy consumption in the 20,000 aggregate quarries across Europe is substantial. Thus reduction and compensation measures in order to mitigate the environmental impact during the complete quarry life cycle are important.
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Controlled Standard
The EE-QUARRY Model simulates the complete processing flow of aggregate extraction through: • simulation of different kinds of
plants processing a range of common materials
• estimation of power consumption for varying configuration settings
• prediction of the impact of changes on site performance without the need for field trials
• providing a conceptual and practical approach to modeling that may be followed at a variety of sites and under different conditions of processing and end-product requirements
• predicting the outcome of “good practice” changes applied to processing within a quarry
Multiple software packages are integrated within an internet accessible Application Server and linked Database, enabling worldwide access to EE-Quarry modelling. Users may set up alternative scenarios for quarrying operations, and optimize energy efficiency and CO2 reduction against capital and operational cost.
Introduction to Energy Efficient
Quarrying
End of Sequence
• Tons/Day: 2184.45 tons • Energy/Day: 1438.9 kWh • Cost/Day: 618.05 m. u. • CO2 emission/Day 244.61 kg • Ave. Idle time: 0.62 mins/process • Total Idle time lost: 189.77 mins/day
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(a) (b)
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Rationale
(a)
(b)
Dissemination – EE-Quarry Continuing Professional Development (CPD) Courses
The University of Leicester is developing a series of courses to be available for CPD, delivered by Distance Learning (DL) examining energy-efficiency in the following aspects of quarrying:
In this project, research has focused on methodologies and best practice across each of the four key aggregate extraction operations to reduce energy-use and carbon emissions. These separate results may then be combined in a scenario-based modelling system to derive a solution for the optimum energy efficiency of operations in that specific quarry, an EE-Quarry model.
Assess uncertainty in your deposit model and consequent risk in your quarry energy efficiency
Deposit Assessment
Examine optimisation of energy use while controlling fragmentation for flexible production of multiple products
Crushing and Screening
Beyond driving skills, explore the subtleties which can significantly improve your quarry’s energy use in loading and hauling
Design your blasting technique to decrease energy and CO2 budgets and improve your fragmentation
Drilling and Blasting
Loading and Hauling
The EE-Quarry Model
Develop your understanding of the complex interaction between energy consumption of the individual processes examined in previous courses and optimize the overall energy efficiency through the application of the EE-Quarry software
