scholarly journals Prospects for using combined (traditional and physical-chemical) mining technologies in the development of large gold-copper ore deposits

2020 ◽  
Vol 192 ◽  
pp. 02001
Author(s):  
Artur Sekisov ◽  
Slava Korolev
Keyword(s):  
Ore Deposits ◽  
Open Pit ◽  
Open Pit Mining ◽  
Processing Plant ◽  
Copper Ore ◽  
Field Development ◽  
Stage Of Development ◽  
Physical Chemical ◽  
Ore Processing ◽  
Initial Stage

The article deals with the problems of development of large gold-copper ore deposits, which have prospects for the development of mining and processing complexes based on them, which produce refined metals as final products. The article substantiates the feasibility of using combined traditional and physical-chemical geotechnologies in the development of these deposits, including geotechnologies in mining, using innovative processes of activation of heap and underground leaching of copper, fine and dispersed gold from complex ores. At the initial stage of development of the large deposits of complex ores, in parallel with traditional schemes open-pit mining and ore processing at the processing plant, it is advisable to use the activation heap leaching of valuable components from poor and refractory ores and flotation tailings from ordinary and rich ore. At the second stage, when switching to the underground method of field development, it is proposed to use blockhole leaching with explosion-injection ore preparation with combination with it. The proposed schemes for combined development of complex gold-copper ore and copper-ore deposits with precious metal mineralization are based on data obtained during many years of experimental research and pilot tests.

Reliability Analysis of Drilling Operation in Open Pit Mines / Analiza niezawodności urządzeń wiertniczych wykorzystywanych w kopalniach odkrywkowych

2013 ◽  
Vol 58 (2) ◽  
pp. 569-578 ◽  
Author(s):  
M.J. Rahimdel ◽  
M. Ataei ◽  
R. Kakaei ◽  
S.H. Hoseinie
Keyword(s):  
Reliability Analysis ◽  
Open Pit ◽  
Open Pit Mining ◽  
Total Delay ◽  
Rotary Drilling ◽  
Blasting Operation ◽  
Drilling Operation ◽  
Initial Stage ◽  
High Investment

Considering the high investment and operation costs, reliability analysis of mining machineries is essential to achieve a lean operation and to prevent the unwanted stoppages. In open pit mining, drilling, as the initial stage of the exploitation operations, has a significant role in the other stages. Failure of drilling machines causes total delay in blasting operation. In this paper, the reliability of drilling operation has been analyzed using the Markov method. The failure and operation data of four heavy rotary drilling machines in Sarcheshme copper mine in Iran have been used as a case study. Failure rate and repair rate of all machines have been calculated using available data. Then, 16 possible operation states have been defined and the probability of being of drilling fleet in each of the states was calculated using Markov theory. The results showed that there was 77.2% probability that all machines in fleet were in operational condition. It means that, considering 360 working days per year, drilling operation will be in a reliable condition in 277.92 days.

scholarly journals Optimal Extraction Methods Selection for Kakosa South Copper Ore Deposit Applying Modified Technique for Order of Preference by Similarity to Idea Solution Model

2019 ◽  
Vol 9 (1) ◽  
pp. 127-132
Keyword(s):  
Fuzzy Numbers ◽  
Underground Mining ◽  
Open Pit ◽  
Open Pit Mining ◽  
Extraction Techniques ◽  
Modified Technique ◽  
Copper Ore ◽  
Ore Deposit ◽  
Transition Depth ◽  
Sublevel Stoping

Kakosa South copper deposit is located about 450km northwest of Lusaka between Chingola and Chililabombwe. A comprehensive study of Kakosa South deposit was carried out. In Kakosa area the footwall aquifer rocks comprising sandstone and conglomerates which are thin and as such are not expected to represent major aquifers. Copper mineralisation is found in the upper quartzite and ore-shale. The inclination of the deposit ranges from 250 up to 350 . The hangingwall formations above the upper quartzite are represented by a sequence of dolomite and shale formations. Based on Kakosa geotechnical analysis and rock mass classification, fuzzy TOPSIS approach was employed for the selection of optimal extraction techniques. FTOPSIS approach has precise and specific quantities which are used in order to establish criteria and option weights. Triangular fuzzy numbers were determined to represent semantic variables. The fuzzy numbers for Kakosa South parameters were used as input data in the decision making model and matched against the criteria required for the mining method. Applying FDM model, extraction techniques were ranked. The results indicated that open pit extraction technique was ranked first with 78.90 scores followed by sublevel stoping with 66.88 scores. It is concluded that the Kakosa South copper ore deposit can optimally be extracted by open pit mining up to transition depth and transit from open pit mining to underground mining employing sublevel stoping.

scholarly journals Mathematical model and supporting algorithm to aid the sequencing and scheduling of mining with loading equipment allocation

2014 ◽  
Vol 67 (4) ◽  
pp. 379-387
Author(s):  
Arthur Andrade ◽  
Miguel Santoro ◽  
Giorgio de Tomi
Keyword(s):  
Mathematical Model ◽  
Mixed Integer Linear Programming ◽  
Time Horizon ◽  
Open Pit ◽  
Mixed Integer ◽  
Open Pit Mining ◽  
Processing Plant ◽  
Medium Term ◽  
Sequencing And Scheduling ◽  
Plant Capacity

This paper focuses on the sequencing and scheduling problem of open pit mining, with the allocation of loading equipment considering a medium-term horizon. This study considers the existence of a heterogeneous loading equipment fleet and two types of mineable material, namely ore or waste rock. For the mining of ore, the following requirements are taken under consideration: the mixture quality, a crusher, the processing plant capacity and a stockpile, called ROM stockpile. In this context, we present a mathematical model in mixed integer linear programming, supported by an algorithm that is responsible for moving the time horizon at each model run, aiming to generate mining orders resolved with optimality. Together, these orders describe the loading equipment mining plan.

scholarly journals Analysis of Environmental Costs’ Effect in Green Mining Strategy Using a System Dynamics Approach: A Case Study

2021 ◽  
Vol 2021 ◽  
pp. 1-18
Author(s):  
Amir Jafarpour ◽  
Siamak Khatami
Keyword(s):  
System Dynamics ◽  
Large Scale ◽  
Mining Operation ◽  
Open Pit ◽  
Open Pit Mining ◽  
Processing Plant ◽  
Environmental Costs ◽  
Mining Operations ◽  
Factors Affecting

Nowadays, one of the most significant problems in mining activities is the significance of analyzing environmental issues along with mining, concentration, and mineral processing operations to achieve the goals of sustainable development. Nevertheless, mine owners refuse to include environmental costs (EC) and consider them unprofitable. Due to the ever-increasing importance of environmental and social topics in recent years, there is a vital need for assessing the EC and its impact on total mining costs and implementing green strategies by the mining managers and engineers. The current study tries to model the mining cost structure by considering the causal relationships between different factors affecting open-pit mining costs to highlight the EC’s role. Furthermore, this research evaluates the effectiveness of implementing each possible mining green strategy in a large-scale copper mine using the System Dynamics (SD) approach. In this regard, seven scenarios and a combination of different environmental strategies, including mine reclamation, an environmental strategy for a condensation and processing plant, and environmental mining operations, have been considered for the SD-based economic analysis. The simultaneous use of the green mining strategies for the concentration and processing plant (Scenario 4) shows a high impact on cost reduction in the mining operation.

scholarly journals Northeastern part of the Bilanivske ferruginousquartzite quarry: Risks of mining allotment

2021 ◽  
Vol 15 (3) ◽  
pp. 54-61
Author(s):  
Serhii Lashko
Keyword(s):  
Iron Ore ◽  
Mutual Influence ◽  
Ore Deposits ◽  
Open Pit ◽  
Southern Boundary ◽  
Protection Zone ◽  
Field Development ◽  
Residential Community ◽  
Type Settlement ◽  
Iron Ore Deposits

Purpose.Substantiation of the managerial decisions to minimize the risks of mining the Bilanivske ferruginous quartzite quarry on its northeastern margin. Methods. The legislative, methodological, cartographic and literary materials on the topic, as well as the area of survey have been analyzed. The necessary cartographic plotting and calculations have been performed. An abstract-logical method is used to formulate conclusions and theoretical generalizations. Findings. The ecological risks of the Bilanivske quarry northeastern margin have been substantiated: presence of uranium ore deposits and a radioactive anomaly; geochemical pollution of groundwater; a depression cone, large in area and in depth, can be formed in the region; a probability of using explosives when mining the field; use of the Bilanivske quarry eastern side for laying mine shafts and adits. The question is raised about the expected expansion of the Bilanivske quarry boundaries to the east during its mining, as well as falling into the sanitary protection zone boundaries of the northwestern residential community of the Nova Haleshchyna urban-type settlement. It is recommended, when mining the Bilanivske and Kremenchuk (Haleshchynske) iron ore deposits, to develop for them a unified draft Environmental Impact Assessment (EIA) and a unified draft of sanitary protection zone, taking into account the fact of their mutual influence on the environment. Originality.For the first time, based on a combination of geological, mining, technological and spatial factors, a site (zone) of mutual risks has been identified in the Bilanivske and Kremenchuk (Haleshchynske) iron ore deposits development. The site has an area of 165 ha, bounded by the northeastern side of the Bilanivske quarry and the southern boundary of the planned Haleshchynske mine. Practical implications.The research results can substantiate the need to resettle the residents from the northwestern residential community of the Nova Haleshchyna urban-type settlement, taking into account the Bilanivske field development by the open-pit method. In addition, they also can serve as a basis for resolving disputes between these residents and the administration of Ferrexpo Belanovo Mining LLC (Bilanivske Mining Plant).

scholarly journals Drive systems of the drilling rigs for open pits in Ukraine: state and ways for improvement

2019 ◽  
Vol 123 ◽  
pp. 01042
Author(s):  
Viktor Khilov ◽  
Nataliia Hlukhova ◽  
Andrii Somin ◽  
Volodymyr Kiiko
Keyword(s):  
Frequency Characteristics ◽  
Open Pit ◽  
Open Pit Mining ◽  
Pass Band ◽  
Processing Plant ◽  
Drilling Process ◽  
Geological Conditions ◽  
Drive Systems ◽  
Drilling Rigs ◽  
Oscillation Frequencies

A comparative analysis is presented of the characteristics of drilling rigs used in open-pit mining in Ukraine. The experimental studies have been conducted of the drive systems and drilling rigs influence on the dynamics of the drilling process under the mining and geological conditions of the Central Mining and Processing Plant (Kryvyi Rih city, Ukraine). The frequency characteristics have been obtained and the dynamic properties of the automated drive systems, as well as frequency characteristics of the rotation mechanism transmissions have been analyzed. The behavior of natural oscillation frequencies in closed control loops of rotational drives was studied, and it has been determined that they exceed the cutoff frequency and fall into the pass band from the attenuation band in frequency-controlled induction motors of most advanced drilling rigs with the maximum number of rods connected in the drill string. It has been established that low oscillation frequencies due to the side frequencies, generated by the drill rod oscillations, fall into the fastest internal current loop. The tasks have been formulated for further research. The purpose of research is to solve the actual scientific and applied problem of dynamic compatibility of frequency characteristics in the modern high speed drive systems with the dynamic characteristics of drilling rigs, which are multi-mass mechanisms with distributed and concentrated parameters with a change in added masses.

scholarly journals EVALUATION OF THE ROUGHER FEED AND CONCENTRATE SIZE DISTRIBUTIONS FROM THE SALOBO SULPHIDE COPPER ORE PROCESSING PLANT

2017 ◽  
Vol 6 ◽  
pp. 85
Author(s):  
Ronaldo Almeida Fonseca ◽  
Francisco Das Chagas Olegario Júnior ◽  
Mauricio Guimarães Bergerman
Keyword(s):  
Processing Plant ◽  
Size Distributions ◽  
Copper Ore ◽  
Ore Processing

scholarly journals TECHNOLOGICAL PECULIAR FEATURES IN DEPOSIT OPENING OF SOLID MINERALS WHILE USING ARTICULATED DUMP TRUCKS

2018 ◽  
Vol 17 (3) ◽  
pp. 238-245
Author(s):  
A. V. Glebov
Keyword(s):  
Import Substitution ◽  
Ore Deposits ◽  
Open Pit ◽  
Open Pit Mining ◽  
Dump Truck ◽  
Design Decision ◽  
Wheel Drive ◽  
Road Tunnels ◽  
Dump Trucks ◽  
Four Wheel Drive

The paper provides an analysis for production of four-wheel drive dump trucks with an articulated frame and it also describes a practical experience pertaining to operation of dump trucks as mining automotive transport. Technical characteristics for some models of articulated dump trucks manufactured in Russia and Belarus are presented in the paper. The paper gives examples for transportation of run-of-mine ore at enterprises of Russia and abroad. The attention has been focused on specific features concerning organizational, technological and design decision making while introducing and promoting articulated dump trucks. It has been established that articulated dump trucks make it possible to improve an efficiency of mine development during construction period and when ore mining and processing enterprises are put into operation especially in geographically remote and inaccessible areas. The paper proposes technological solutions allowing to expand the scope of articulated dump truck application at mining enterprises while using them for quarry development excavating deep deposits of solid minerals. It has been revealed that reduction in overburden volume can be achieved by transition from a certain depth to lower capacity dump trucks or special dump trucks operating on elevated slopes of roads. The paper shows that one of perspective directions for development of mining technology on kimberlite deposits is an opening of lower quarry horizons by peripheral road tunnels of spiral shape while using articulated dump trucks. The presented technological solutions require further research and design consideration and study and they will allow to ensure resource efficiency and safety of surface mining while extracting minerals at previously uneconomic ore deposits. In order to realize an import substitution program for four-wheel drive dump trucks with an articulated frame it is necessary to carry out marketing research on potential market for machines of this class required for open-pit mining in order to justify prospects for provision of the Russian production market.

scholarly journals A Tunnel under an In-Pit Mine Waste Dump to Improve Environmental and Landscape Recovery of the Site

Minerals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 566
Author(s):  
Rania Rebbah ◽  
Joana Duarte ◽  
Omar Djezairi ◽  
Mohamed Fredj ◽  
João Santos Baptista
Keyword(s):  
Raw Materials ◽  
Mine Waste ◽  
Mining Industry ◽  
Mining Area ◽  
Legal Aspects ◽  
Ore Deposits ◽  
Open Pit ◽  
Open Pit Mining ◽  
Environmental Recovery ◽  
Phosphate Deposit

By adopting the green mining concept, the mining industry seeks to respond to the current societal objective of supplying the mineral raw materials necessary for economic development while minimising the ecological footprint. To accomplish environmental recovery simultaneously with mineral exploitation, as well as to take advantage of mine waste, this study proposes a new solution that includes the construction of a tunnel to access the mining area. The concept, developed with topographical and geological data, was tested for the Bled El Hadba phosphate deposit. The extraction volumes were estimated by considering all the technical and legal aspects of the exploitation. The results showed that the best location for the tunnel is on the non-mineralised bottom of the mine and placed after ore removal. The tunnel is then progressively covered by mine tailings as it is extended. This concept is applicable to sub-horizontal ore deposits. We show that the solution is feasible and allows full site recovery at the end of the open-pit mining phase.

Divided Loyalties: Immigrant Padrones and the Evolution of Industrial Paternalism in North America

1998 ◽  
Vol 53 ◽  
pp. 49-68 ◽  
Author(s):  
Gunther Peck
Keyword(s):  
North America ◽  
Mining Operation ◽  
Open Pit Mine ◽  
Open Pit ◽  
Open Pit Mining ◽  
Copper Extraction ◽  
Low Grade ◽  
Copper Ore ◽  
New Man

When industrialist John D. Rockefeller visited the new open-pit mining operation of his competitor, Daniel J. Guggenheim, in Bingham Canyon, Utah, in 1910, he declared with genuine envy and admiration,“it's the greatest industrial sight in the whole world.” What most impressed Rockefeller were the massive steam shovels that had revolutionized the process of copper extraction by enabling firms to mine and smelt tons of previously worthless low-grade copper ore. Equally impressive was the fact that, where skilled American miners had very recently toiled underground in search of rich veins of copper, unskilled immigrants now worked aboveground, loading tons of newly blasted copper ore onto train cars. Rockefeller was not alone in expressing wonder at this new man-made marvel. Hundreds of sight-seeing tourists also traveled to the mine by train each week to experience the thrill of industrial America's newfound ability to move mountains. Like Rockefeller, they saw nothing but progress and modernity in the great open-pit mine.

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