a case study that focuses on the longterm production planning of an openpit iron ore mine in India. The stochastic production scheduling was performed. For stochastic modelling, only the geological uncertainty or risk was considered; however, any other uncertainty can be incorporated with the additional computational burden.
It is common in mining industry that the deposits contain multiple correlated attributes of interest. A typical example is iron ore mining, where up to six variables need to be considered in resource estimation and mine planning, namely iron (Fe), silica (SiO 2), alumina (Al 2 O 3), phosphor (P), loss on ignition (LOI) and Ochreous Goethite (GOL), and they are crosscorrelated.
An openpit mine bulk materials handling system case study is presented to demonstrate the approach. A dispatching heuristic controlling the operation of the trucking system can be optimised through the selection of values for four control parameters. ... some background knowledge of the process of openpit mining is necessary. The purpose of ...
mining engineering, and economics [1]. Mineral mining is a fairly complex process technique and can last for decades [2]. There are two kind of mining methods widely used, namely open pit mining and underground mining. One of the challenges faced by open pit mining industry is determining the optimal cutoff grade of the mine to be processed. The
(264).An application for the conversion to a new order mining right will be submitted during F2008. The Gloria mining lease (ML11/83) comprises an area of 1 hectares and is located on portion 1 of the farm Gloria (266). An application for the conversion to a new order mining right will be submitted during F2008. GEOLOGY
In openpit mining, in order to extract an ore block, it is necessary to remove all waste blocks with a variable slope angle up to the surface. The final combination of all ore blocks together with all waste blocks necessary to reach them that give maximum economic value is called UPL. Many studies have been carried out to determine UPL.
Cost decreased at an optimum fragmentation size in the surface mining operation and production [7,8].The back bone of the blast results quality in surface mining is the efficiency and cost of ...
Open pit mining method is one of the surface mining methods that has a traditional coneshaped excavation and is usually employed to exploit a nearsurface, nonselective and lowgrade zones...
The operation and management of a large open pit mine having a life of several (550) years is an enormous and complex task. Optimisation techniques can be successfully applied to resolve a number of important problems that arise in the planning and management of a mine.
Increasing population levels, growing economies, rapid urbanization and changes in consumption patterns have increased the demand for raw materials such as base and precious metals, leading to growing concerns regarding their availability and the global efficiency of the mine supply chain. Mine tailings, consisting of process effluents that are generated in a mineral processing plant, are ...
Mining activities affect environment, economic and society in its surrounding region. This study aims to assess the sustainability of SorkheDizaj openpit iron ore mine which is located 300 km in northwest of Tehrancapital of . The annual ore production of SorkheDizaj openpit mine is 400,000 tonne, extracted an area of Km 2. In ...
The developed model is tested in the GoleGohar ironore mine, and the mine UPLs is determined. ... the development process of openpit mine slope engineering in China can be divided into ...
The utilization of mining area in the Leeuwfontein pit improved from 71% to 90%, and the blasting frequency reduced by 14% while the average blast size increased by 17%. The distance travelled during shovel relocations between mining phases reduced by 16%, and the lost time associated with drills relocating reduced by 53%.
7. Digging Capacity of Shovel No. Description Value 1. bucket size m3 2. fill factor for well blasted rock = 80% 3. average bucket capacity = x m3 4. swing time second 28 5. passes per minute, continuous operation 60/28 6. cubic metre per hour continuous x 60/28 x 60 787 7. swell factor 67% 8 ...
Therefore, new methods for dump design optimization are of the highest priority in mine planning management. This paper presents a methodology to model and optimize the design of a mine dump by minimizing the total haulage costs. The proposed methodology consists of: (1) formulation of a dump model; (2) solves by using linear programming and ...
INTRODUCTION. In openpit mining, there is a clear trend of excavating mines of increasing depths (Figure 1a).Owing to the increased efficiency of mining equipment and improved exploration techniques and technology, the ore bodies left to be exploited are deeper (Figure 1b).The deeper a mine is, the higher the effect of pitwall steepness on the amount of waste rock to be excavated and ...
The scheduling of openpit mine production is a largescale, mixedinteger linear programming problem that is computationally expensive. The purpose of this study is to create a computationally efficient algorithm for solving openpit production scheduling problems with uncertain geological parameters. To demonstrate the effectiveness of the proposed research, a case study of an Indian iron ...
The open pit mining load and haul system has been a mainstay of the mining industry for many years. While machines have increased in size and scale and automation has become an important development, there have been few innovations to the actual load and haul process itself in recent times. This research highlights some of the potential productivity and safety benefits that the incorporation ...
In the production process of openpit mines, trucks are applied in the production process of openpit mines for transporting ores and rocks. Most openpit mines are equipped with dozens of trucks. It is important to plan the dispatch of trucks in the production process so that the transportation process can be the shortest in distance, the lowest in cost, and the most efficient. At present ...
In this study, vibration sensors were used to measure blastinduced ground vibration (PPV). Different evolutionary algorithms were assessed for predicting PPV, including the particle swarm optimization (PSO) algorithm, genetic algorithm (GA), imperialist competitive algorithm (ICA), and artificial bee colony (ABC). These evolutionary algorithms were used to optimize the support vector ...
The longterm planning of open pit mine is a dynamic process and should be reviewed periodically for enhancing the NPV and life of mine. Pit optimization through soft computing can be gainfully applied to resolve a number of important problems that arise in developing suitable planning strategies and man agement of a mine.
Most iron ore mining operations use the 'open pit' method, where miners drill into the rock and blast the orebearing material loose with explosives. Huge excavators are then used to gather the loosened ore. To mine metallurgical coal, which will later be turned into coke, it's usually necessary to sink vertical mine shafts to access coal which is deposited in layers or 'seams ...
Rock slope failure has the potential to cause multiple fatalities in open pit coal, iron ore, base and precious metals mining operations. Rigorous geotechnical design, inspection and monitoring ...
Openpit mining technology. Openpit mining clearly offers a number of economic advantages over underground mining, especially now that mineralprocessing technology has advanced to the stage where very lowgrade ores can be treated profitably. 100 to 150 years ago, this was not the case, and mining was still much more selective.
The profit function can also be formulated in unit values (per ton or cubic meter of ore), by assigning a unit profit function L ′ (/h), which is given by (2) L ′ = T U V − M − E R − B − F P. In all these variables, there are two geological characteristics, which have great importance: the stripping ratio R and the grade of ore is therefore essential to determine what their ...
In an open pit mining operation, the heterogeneity of the gradetonnage distribution of the deposit dictates that all available material within the boundaries of an open pit may not be processed.
Presentation Transcript. Explanation: Openpit mining, also known as opencut mining, and strip mining, refers to a method of extracting rock or minerals from the earth by their removal from an open pit. Most of the time, when the mining company is done with it, the pit is used as a landfill. A landfill is used as a dump to get rid of our garbage.
AskariNasab et al. (2010) applied MILP formulations to an open pit iron ore mine production schedule and compared their results to an industry strategic mine planning software, Whittle ( GEOVIA ...
billion in 2018. The remaining 2% of domestic iron ore was produced for nonsteel end uses. Seven openpit iron ore mines (each with associated concentration and pelletizing plants), and three iron metallic plants—one directreduced iron (DRI) plant in Louisiana and two hotbriquetted iron (HBI) plants in Indiana and Texas—operated during
This work deals with the shortterm planning problem of a work shift for openpit mines. The problem involves ore and waste fronts, shovels, heterogeneous truck fleets, and discharge points. The allocation of trucks is dynamic to allow multiple routes to be assigned to each truck. The problem consists of deciding which fronts must be mined and ...
This study aimed to develop and assess the feasibility of different machine learning algorithms for predicting ore production in openpit mines based on a truckhaulage system with the support of the Internet of Things (IoT). Six machine learning algorithms, namely the random forest (RF), support vector machine (SVM), multilayer perceptron neural networks (MLP neural nets), classification and ...
Geological and economic modeling of an ore body and also optimization of the depth at which transition is made from openpit to underground mining is an important part of the mining design process in large and massive deposits. In this paper, a geological block model of ChahGaz iron ore deposit located in was first created based on iron ore cutoff grade. Then with considering the ...
The measurement of mining equipment performance has evolved. Initially, the measurement was done using singlemeasurement indices such as machine availability, production index and utilisations ...
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