Financial model for energy efficiency projects in the mining industry

Energy ◽  
2018 ◽  
Vol 163 ◽  
pp. 546-554 ◽  
Author(s):  
A.J.H. Nel ◽  
J.C. Vosloo ◽  
M.J. Mathews
Keyword(s):  
Energy Efficiency ◽  
Mining Industry ◽  
Financial Model

scholarly journals A Comparative Study of Energy Efficiency in Tumbling Mills with the Use of Relo Grinding Media

Metals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 735
Author(s):  
Nikolay Kolev ◽  
Petar Bodurov ◽  
Vassil Genchev ◽  
Ben Simpson ◽  
Manuel G. Melero ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Test Procedure ◽  
Mining Industry ◽  
Slight Modification ◽  
Index Test ◽  
Grinding Media ◽  
Work Index ◽  
Mineral Sample ◽  
Tumbling Mills ◽  
Bond Tests

An evaluation of Relo grinding media (RGM, Reuleaux tetrahedron-shaped bodies) performance versus standard grinding media (balls) was made through a series of grinding tests, including a slight modification of the standard Bond test procedure. Standard Bond tests showed a reduction in the Bond ball mill work index (wi) of the mineral sample used in this study when using Relo grinding media. The modified Bond test procedure is based on using the standard Bond ball work index test but changing the circulating loads (350%, 250%, 150%, 100%). The comparative tests with RGM were carried out at the same number of revolutions as the grinding tests with balls at respective circulating load. The RGM charge yielded a 14% higher net undersize product than balls, which hints at improving energy efficiency and the potential for significant mining industry benefits.

scholarly journals Increasing energy efficiency of walker dragline

2020 ◽  
Vol 59 (3) ◽  
pp. 131-139
Author(s):  
Nikolay Maksimovich SUSLOV ◽  
◽  
Stanislav Alekseevich CHERNUKHIN ◽  
Dmitriy Nikolaevich SUSLOV ◽  
◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Mining Industry ◽  
Hydraulic Drive ◽  
Open Pit ◽  
Open Pit Mining ◽  
Common Mechanism ◽  
Walking Mechanism ◽  
Additional Support ◽  
The Cost

Relevance of the work. Reducing the cost of mining in the course of open pit mining has always been considered one of the important tasks in the mining industry; it allows to reduce the cost of the extracted ore. When developing quarries, the most costly work, in which there is no direct mining, is the overburden of waste rocks. The method of stripping operations is one of the most efficient and highly productive, which uses a non-transport technology with a walking dragline excavator. Moving such powerful machines is energy-intensive and affects the efficiency of the machine as a whole, therefore, the modernization of the walking mechanism will increase the energy efficiency of the excavator and ultimately reduce the cost of mining. The most common mechanism for moving such machines is a hydraulically driven three-bearing mechanism. This paper describes the proposed modernization of such a walking mechanism, which makes it possible to get rid of two main disadvantages, namely, the lack of energy recuperation of the lifted machine along the path and the dragging of the base edge against the ground, which creates additional resistance to movement. The installation of hydraulic accumulators in the hydraulic system of the drive of the movement of the machine will allow accumulating the energy of the machine raised above the ground when walking, and the introduction of an additional support shoe into the support base of the machine will get rid of dragging the base. In general, the presented modernization of the mechanism will reduce the energy consumption of moving a dragline excavator with a three-bearing walking mechanism with a hydraulic drive and, ultimately, reduce the cost of mining. Purpose of the work: to improve the efficiency of the dragline as a whole by increasing the energy efficiency of its movement. Objectives: consider design changes to reduce the energy cost of moving the dragline. Results. A variant of adding a support shoe into the walking mechanism is considered, which makes it possible to eliminate the friction of the base against the rock along the path by completely separating the base from the ground. Calculations of energy consumption of mechanisms for different types of draglines with the existing and proposed mechanism are carried out. Conclusions, application of results. The calculations given in this paper allow us to conclude about the effectiveness of the changes made to the design of the walking mechanism. The proposed mechanism allows you to significantly reduce the cost of moving and get rid of the disadvantages inherent in the existing mechanism.

scholarly journals Enhancing Energy Efficiency of Wireless Sensor Network for Mining Industry Applications

2020 ◽  
Vol 176 ◽  
pp. 261-270
Author(s):  
Abdellah Chehri ◽  
Rachid Saadane ◽  
Nadir Hakem ◽  
Hasna Chaibi
Keyword(s):  
Energy Efficiency ◽  
Wireless Sensor Network ◽  
Sensor Network ◽  
Mining Industry ◽  
Wireless Sensor ◽  
Industry Applications

scholarly journals Energy efficiency of consecutive fragmentation processes

2010 ◽  
Vol 47 (2) ◽  
pp. 543-561
Author(s):  
Joaquín Fontbona ◽  
Nathalie Krell ◽  
Servet Martínez
Keyword(s):  
Energy Efficiency ◽  
Energy Cost ◽  
Energy Requirement ◽  
Mining Industry ◽  
Average Energy ◽  
The Self ◽  
Unit Mass ◽  
Mass Fragment ◽  
Self Similar ◽  
Fragmentation Processes

Motivated by a problem arising in the mining industry, we present a first study of the energy required to reduce a unit mass fragment by consecutively using several devices. Two devices are considered, which we represent as different stochastic fragmentation processes. Following the self-similar energy model introduced in Bertoin and Martínez (2005), we compute the average energy required to attain a size η0 with this two-device procedure. We then asymptotically compare, as η0 goes to 0 or 1, its energy requirement with that of individual fragmentation processes. In particular, we show that, for a certain range of parameters of the fragmentation processes and of their energy cost functions, the consecutive use of two devices can be asymptotically more efficient than using each of them separately, or vice versa.

scholarly journals Energy efficiency of consecutive fragmentation processes

2010 ◽  
Vol 47 (02) ◽  
pp. 543-561
Author(s):  
Joaquín Fontbona ◽  
Nathalie Krell ◽  
Servet Martínez
Keyword(s):  
Energy Efficiency ◽  
Energy Cost ◽  
Energy Requirement ◽  
Mining Industry ◽  
Average Energy ◽  
The Self ◽  
Unit Mass ◽  
Mass Fragment ◽  
Self Similar ◽  
Fragmentation Processes

Motivated by a problem arising in the mining industry, we present a first study of the energy required to reduce a unit mass fragment by consecutively using several devices. Two devices are considered, which we represent as different stochastic fragmentation processes. Following the self-similar energy model introduced in Bertoin and Martínez (2005), we compute the average energy required to attain a size η0 with this two-device procedure. We then asymptotically compare, as η0 goes to 0 or 1, its energy requirement with that of individual fragmentation processes. In particular, we show that, for a certain range of parameters of the fragmentation processes and of their energy cost functions, the consecutive use of two devices can be asymptotically more efficient than using each of them separately, or vice versa.

scholarly journals SPECIFIC ENERGY CONSUMPTION – THE COMPARISON OF BELT CONVEYORS

Mining Scince ◽  
2019 ◽  
Vol 26 ◽  
Author(s):  
Natalia Suchorab
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Inclination Angle ◽  
Specific Energy ◽  
High Efficiency ◽  
Bulk Material ◽  
Specific Energy Consumption ◽  
Mining Industry ◽  
Belt Conveyor ◽  
Belt Conveyors

Belt conveyors (BCs), because of their high efficiency, are widely used for bulk material handling in the mining industry. However, due to the high level of conveyors’ energy consumption, the belt conveyor systems generate a large part of mining costs. Therefore, the current solutions mostly focus on implementing new management strategies, which find energy consumption as a key indicator in designing belt conveyor systems. Belt conveyor equipment selection, conveying systems, operation, applied mining technology are considered to be areas where improvement of belt conveyors’ energy efficiency may be achieved. Moreover, they can be used to implement novel standards for BC equipment and the proposal of defining new quality standards and creating BCs’ classification has been already outlined. The main idea of the paper is to compare the values of specific energy consumption (SEC) of BCs with regard to the inclination angle of a conveyor route which results from technological needs. The multiple regression is used to find a relationship between two basic independent variables – the volume of transported material and conveyor’s inclination angle – and a dependent variable (SEC). The procedure enables to determine the value of SEC which is required for lifting the material. Presented results prove that the value of SEC required for lifting the material is crucial for the interpretation of the SEC value when it comes to energy efficiency comparison.

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