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block caving, cost model Mining Nov 19, 2012 3D large scale physical modelling for studying interactive drawing Block caving is the lowest cost and most model (m) Modern Kiruna Ridgeway Block cave IEZ (P50 5mm) Block cave IEZ block caving mine model Block caving requires a large capital expenditure for development and is usually applicable for largescale projects This method usually has a lower operating cost per short ton than any other underground method, and often the highest capital costAbstract USGS01/12/2018 Block cave mining operating costs are typically in the order of one tenth of what other underground mining methods cost, largely driven by economies of scale where production rates can reach 30,000 to 100,000 tonnes per day In addition, drilling and blasting costs are far less, and there are no backfilling costsBlock caving Canadian Mining Journal
A Review of Mathematical Models and Algorithms in Block
Depending on the orebody dimensions, inclination, and rock characteristics, block caving could be implemented as block caving, panel caving, inclined drawpoint caving, and front caving The lowcost operation could be understood from the natural caving In other words, during the extraction period, there is no cost for caving unless some small blasting is needed to A Review of Mathematical Models and Algorithms in BlockCaving Scheduling 1 Firouz Khodayari and Yashar Pourrahimian Mining Optimization Laboratory (MOL) University of Alberta, Edmonton, Canada Abstract Production scheduling is one of the most important problems in a mining operation, as it has a significant impact on a project’s profitability As openpit mines go A Review of Mathematical Models and Algorithms in Block Mining costs, including all direct, indirect and fixed costs, except royalty and lease payments, ranged from $104 per ton for chamber and pillar to $135 per (PDF) Block caving ResearchGate
Block Caving – A Viable Alternative? Golder
10/07/2018 The following steps should be completed when evaluating a mineral deposit for block caving: Apply typical costs and economic cutoff values to the resource block model and assess the resulting geometry and block values in terms of block caving – size, shape and available footprint area, and potential economic margins Assess the available geotechnical applied to large, lowgrade orebodies because of its low production cost and high capacity In this paper, first, production scheduling methods for underground mining are reviewed and then, block caving method is described Afterwards, available mathematical models of block cave scheduling and their shortcomings are described Finally, the An overview of block caving operation and available Block caving is an underground mining method that uses gravity to exploit massive, steeply dipping ore bodies located at depth These ore bodies are generally low grade in nature and are too deep to be extracted through open pit mining The technique is commonly used to extract low grade copper, coppergold, iron and molybdenum ores although there are other applications Block caving QueensMineDesignWiki
LONG TERM PLANNING OF BLOCK CAVING OPERATIONS USING
Figure 39: Variation of opportunity cost as the schedule progresses 45 Figure 310: Comparison between methods to compute mining reserves in Block Caving 50 Figure 311: Comparison between methods to compute mining reserves in Block Caving 51 Figure 312: Evolution of opportunity cost through the production schedule for different iterations 53Block caving mine model, base case 12 Cutandfill mine model, base case 13 Roomandpillar mine model, base case 14 Shrinkage stope mine model, base case 15 Sublevel longhole mine model, base case 16 Vertical crater retreat mine model, base case 17 Tailings pond capital costs 18 AutoclaveCILelectrowinning mill model 19 CILelectrowinning mill model Simplified Cost Models For Prefeasibility Mineral USGSThe production cost of block caving method per unit ore is comparable to that of open pit mining However, block caving entails certain disadvantages It is more (PDF) Open pit or block caving? A numerical ranking method
block caving, cost charlyshopch
cost of mining equipment for sub level caving mining used primary crusher for quarry equipment block caving cost model Mining Beneficiation Plant For Know More Block caving PDF Download Available Official FullText Publication Block caving on ResearchGate the professional network for scientists Know More block caving and primary crushing block Keywords: Palabora block cave, caving mechanism evaluation, reconciliation 1 Introduction The block model orientation and size had been set up to match with the drawpoint orientation and spacing The block sizes were 20 × 40 × 60 m, and Howson (2003) suggested that the block sizes had to be revised to 10 × 10 × 10 m The exploration drill density for Lift 2 justified the Palabora Lift 1 block cave: understanding the grade behaviourStrategic considerations in block caving RJ Butcher Barrick Gold of Australia Ltd, Australia G Smith Barrick Gold of Australia Ltd, fluctuations in commodity prices on cave design by the use of a conceptual model, developing guidance in terms of potential mitigation strategies and options to be employed 1 Introduction Over the last twenty years there have been Strategic considerations in block caving
Simplified Cost Models For Prefeasibility Mineral USGS
Block caving mine model, base case 12 Cutandfill mine model, base case 13 Roomandpillar mine model, base case 14 Shrinkage stope mine model, base case 15 Sublevel longhole mine model, base case 16 Vertical crater retreat mine model, base case 17 Tailings pond capital costs 18 AutoclaveCILelectrowinning mill model 19 CILelectrowinning mill model production rate and low operating costs, could be considered as an appropriate alternative Projections show that 25 percent of global copper production will come from underground mines by 2020 Mining companies are looking for an underground method with a high rate of production, similar to that of openpit mining Therefore, there is an increased interest in using blockcave Production Scheduling in Block Caving with Consideration cost of mining equipment for sub level caving mining used primary crusher for quarry equipment block caving cost model Mining Beneficiation Plant For Know More Block caving PDF Download Available Official FullText Publication Block caving on ResearchGate the professional network for scientists Know More block caving and primary crushing block block caving, cost charlyshopch
Analytical Model To Determine Of The Optimal Block Size In
Analytical Model To Determine Of The Optimal Block Size In The Block Caving Mining Method J Someehneshin1, K Oraee2 1Islamic Azad University South Tehran Branch Tehran, Iran 2University of Stirling Stirling, UK FK7 4LA 2 P a g e ABSTRACT Nowadays along with population growth, industry development, consumption of mineral resources and the fact that Mine Sequence Optimization for Block Caving Using Concept of ‘Best and Worst Case’ 1 rate, opening rate, mine sequence and production target per year This option allows the use of a specific opening mine sequence for the entire footprint on each elevation, or the generation of different sequences for separate sectors of each block model level to be analyzed • Input Mine sequence optiMization for Block caving using concept Keywords: Palabora block cave, caving mechanism evaluation, reconciliation 1 Introduction The block model orientation and size had been set up to match with the drawpoint orientation and spacing The block sizes were 20 × 40 × 60 m, and Howson (2003) suggested that the block sizes had to be revised to 10 × 10 × 10 m The exploration drill density for Lift 2 justified the Palabora Lift 1 block cave: understanding the grade behaviour
A Comminution Model for Secondary Fragmentation Assessment
03/07/2017 Due to lower commodity cost, lower grades, and deeper deposits, In the Block Caving Comminution Model, this is taken into account by applying the fragmentation recursively as the draw progresses But vertical pressure is also a key parameter in the model presented, so for different heights the model considers different residence time, τ, and different vertical development costs for a range of potential layouts Susaeta (2008) proposed a design guide for production level layouts in terms of the rock type, the layout, and the draw strategy required to minimize dilution Lately Kvapil (2004) has proposed a graph to determine the diameter of isolated draw for three types of rock for block/panel caving mines Other authors have proposed the Determination of drawpoint spacing in panel caving: a case Camus (1992) applies the Lerchs and Grossman (1965) algorithm implemented in commercial mining software (Whittle) at an economic block model that relies on the modified economic value equation for a mining block that is apart from other economic parameters (commodity price, refining cost, processing cost, OP mining costs and metallurgical recovery) integrates the UG Timing of transition from openpit to underground mining