scholarly journals Simultaneous stochastic optimisation of an open-pit gold mining complex with waste management

2019 ◽  
Vol 34 (6) ◽  
pp. 415-429 ◽  
Author(s):  
Zachary Levinson ◽  
Roussos Dimitrakopoulos
Keyword(s):  
Waste Management ◽  
Gold Mining ◽  
Open Pit ◽  
Stochastic Optimisation ◽  
Mining Complex

scholarly journals An Application of Simultaneous Stochastic Optimization at a Large Open-Pit Gold Mining Complex under Supply Uncertainty

Minerals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 172
Author(s):  
Mélanie LaRoche-Boisvert ◽  
Roussos Dimitrakopoulos
Keyword(s):  
Stochastic Optimization ◽  
Value Chain ◽  
Gold Mining ◽  
Net Present Value ◽  
Mineral Deposit ◽  
Open Pit ◽  
Supply Uncertainty ◽  
Geological Uncertainty ◽  
Processing Facility ◽  
Mining Complex

The simultaneous stochastic optimization of mining complexes optimizes various components of the related mineral value chain jointly while considering material supply (geological) uncertainty. As a result, the optimization process capitalizes on the synergies between the components of the system while not only quantifying and considering geological uncertainty, but also producing strategic mine plans, maximizing the net present value. This paper presents an application of simultaneous stochastic optimization at a large gold mining complex. The complex contains three open-pit mines, three stockpiles, a waste dump, and a processing facility. Material hardness management is integrated at the processing facility. The case study generated production schedules for each mineral deposit considered, as well as an overall assessment of the project and related forecasts. It resulted in an 18 year life-of-asset and identified the semi-autogenous grinder (SAG) mill as the bottleneck of the operation.

Investigation of the Formation of a Plant Ecosystem in the Territory of Gold Mining Mines in the Chelyabinsk Region

2021 ◽  
Vol 25 (1) ◽  
pp. 49-53
Author(s):  
I.V. Zen’kov ◽  
E.V. Loginova ◽  
G.A. Karacheva ◽  
G.I. Latyshenko ◽  
P.M. Kondrashov ◽  
...  
Keyword(s):  
Gold Mining ◽  
Remote Sensing Data ◽  
Gold Deposits ◽  
Open Pit ◽  
Open Pit Mining ◽  
Ecological State ◽  
Waste Dumps ◽  
Low Levels ◽  
Chelyabinsk Region ◽  
Gold Bearing

The paper presents the results of a study of the ecological state of rock dumps and repositories of processed gold-bearing ore in the course of open-pit mining of gold deposits in the Chelyabinsk region. According to remote sensing data and analytical calculations, it was established that the rate of reclamation of disturbed lands lags behind the rate of their withdrawal for the needs of gold mining enterprises. In parallel with this, low levels of vegetation cover restoration coefficients were revealed on waste dumps.

scholarly journals Anthropogenic Vegetation in the River Valley Amalat

2019 ◽  
Vol 16 ◽  
pp. 00049
Author(s):  
Marina Tsyrenova ◽  
Evgenia Pyzhikova ◽  
Elena Vasilyeva
Keyword(s):  
Vegetation Cover ◽  
Gold Mining ◽  
Research Study ◽  
Gold Deposits ◽  
Open Pit ◽  
Current State ◽  
Disturbed Areas ◽  
Alluvial Gold ◽  
Anthropogenic Vegetation ◽  
Mining Methods

The article presents the results of a research study of anthropogenic affects of gold mining on forest landscapes in Northern Transbaikalia, Russia and processes of natural reclamation of vegetation cover of the disturbed areas. The study area is located northwest of the Maliy Amalat River, which flows along the Vitim Plateau; in the floodplains of its two tributaries the Aunik River and the Bagdarin River. It is an area where a large number of alluvial gold deposits have been discovered. Some of these deposits are currently being developed, some have already been explored, and some have been abandoned. The authors consider the current state of vegetation cover in a key area of the Amalat River basin, near villages of Malovsky and Bagdarin. The problem of natural resources development and conservation is becoming extremely important for the area under study because open-pit gold mining methods that are used here drastically change the environment and affect water, land and forest resources.

Muruntau gold mining and refining operation: Resources, expansion program and future considerations

2021 ◽  
pp. 43-47
Author(s):  
K. Sanakulov ◽  
N. P. Snitka
Keyword(s):  
Gold Mining ◽  
Underground Mining ◽  
Open Pit ◽  
Open Pit Mining ◽  
Mining Operations ◽  
Late 20Th Century ◽  
Gold Ore ◽  
Refining Operation ◽  
Production Improvement ◽  
Stable Performance

The international geological community has acknowledged Muruntau gold deposit as the greatest discovery in the mid-to-late 20th century. Muruntau mine field holds the total appraised resource potential of more than 4.5 thousand tons of gold. Hydrometallurgical plant GMZ-3 implements gold-ore processing by gravitational sedimentation and adsorption. The technological and instrumental modernization of the gold processing circuit toward its higher capacity, gold recovery and thoroughness are the important aspects of production improvement and cost reduction. The developed and introduced ore milling flowchart provides replacement of the second milling stage pumps by higher-capacity pumps backed up with additional cyclones. Aiming to ensure stable gold production at plants GMZ-2 and GMZ-3, Navoi MMC’s experts accomplished the feasibility study of mining operations in Chukurkuduk and Turbai deposits in 2020. The growth prospects for open pit mining in Murunatu–Myutenbai fields after 2060 are estimated using the model of optimized ultimate pit limit design at the gold price of USD 1500/t. The model ultimate pit limit embraces all probable reserves as per the detailed 2D seismic data as of early 2020, including proven reserves intended for open pit and underground mining. The gold ore appraisal and the expansion program elaborated for Muruntau gold mining and refining integrated works in joint Muruntau–Myutenbai field, through implementation of operation phases V and further make it possible to forecast stable performance up to 2030–2050.

scholarly journals Assessment of occupational risks of employees engaged in open-pit mining

2020 ◽  
Vol 177 ◽  
pp. 06006
Author(s):  
S.S. Timofeeva ◽  
I.V. Drozdova ◽  
A.A. Boboev
Keyword(s):  
Gold Mining ◽  
Work Conditions ◽  
Working Environment ◽  
Industrial Safety ◽  
Open Pit ◽  
Open Pit Mining ◽  
Physical Factors ◽  
Labor Protection ◽  
Occupational Risks ◽  
Risks Assessment

Currently, Uzbekistan is in the process of legislation modernization, primarily in matters of labor protection and industrial safety. Modernization consists in the transition from a previously existing ineffective system focused on compensation payments to a modern system based on preventive approaches, which imply continuous improvement of work conditions. The aim of this work is to analyze the legislation in the field of labor protection management, obliging employers to proceed to occupational risks assessment and their management, as well as the assessment of occupational risks for miners, working under the influence of harmful and dangerous production factors during gold mining in the quarry, and the development of measures to reduce them. The possible reasons for the discrepancy with the stated requirements of the physical factors of the miners working environment when performing work in gold mining quarries are analyzed. It has been established that professional risks for personnel are classified as high and medium and it is necessary to carry out organizational and technical measures to minimize them.

Waste Management and the Elimination of Mercury in Tailings from Artisanal and Small-Scale Gold Mining in the Andes Municipality of Antioquia, Colombia

2020 ◽  
Author(s):  
Oscar Jaime Restrepo Baena ◽  
Gustavo Aristizábal ◽  
Mateo S. Pimentel ◽  
Cristian A. Flórez ◽  
Carlos E. Argumedo
Keyword(s):  
Waste Management ◽  
Gold Mining ◽  
Small Scale ◽  
The Andes
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