A comparison of strategic mine planning approaches for in-pit crushing and conveying, and truck/shovel systems

Nehring, Micah; Knights, Peter; Kizil, Mehmet S.; Hay, Edward N.

doi:10.1016/j.ijmst.2017.12.026

Cited by 44 publications

(25 citation statements)

References 5 publications

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“…Best application for fixed crusher systems is in deep, pre-existing pits with a low vertical advance rate. The crusher must be able to handle the operation without being relocated over a time longer than five years [3]. Fully-mobile in-pit crushing stations are best applied in greenfield operations [3].…”

Section: Crusher Systemmentioning

confidence: 99%

Evaluation and Risk Analysis of Open-Pit Mining Operations

Pekol

2019

Berg Huettenmaenn Monatsh

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Mining of raw materials is a process that consists of several stages. In open-pit mining, material with high compressive strength is extracted by drilling and blasting and material with low compressive strength is extracted by e. g. a bucket wheel excavator. Most important influencing factors for crusher decision are compressive strength, moisture content, capacity of crusher, abrasiveness, and feed size. Depending on sequence of mining, fixed, semifixed, semi-mobile, or fully-mobile crusher stations can be applied. Compressive strength, tensile strength, cleavage, fracture behaviour, and stickiness are the most significant influencing factors for bucket wheel excavator selection. The waste removal and dumping associated with mining must be handled very well, so that the environmental impacts are as low as possible and dump stability is guaranteed. Essential are dump foundation properties, design of dump, and construction of dump. Open-pit mining operations harbour risks which can lead to project delays, operation standstill, injury to personnel, damage to equipment, or negative impacts on the environment. Therefore, risk identification and prevention of risks is essential.

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Section: Crusher Systemmentioning

confidence: 99%

Evaluation and Risk Analysis of Open-Pit Mining Operations

Pekol

2019

Berg Huettenmaenn Monatsh

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“…A SMIPCC can exploit the advantages of both systems, conventional trucking and fully mobile IPCC, but it is important to ensure that the in-pit crusher is at an appropriate distance from the work front and that its location will be suitable for at least one year of operation before it needs to be moved (Rahmanpour et al 2014). SMIPCC systems are considered flexible and adaptable because of the continuous use of trucks and being able to install a crusher in a suitable location (Nehring et al 2018). In the majority of studies that compare IPCC with truck based haulage systems using conveyors, results in large operational savings due to a more efficient energy and capital allocation.…”

Section: Introductionmentioning

confidence: 99%

A decision-making method to assess the benefits of a semi-mobile in-pit crushing and conveying alternative during the early stages of a mining project

Nunes¹,

Junior

Tomi

et al. 2019

REM, Int. Eng. J.

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A significant cost in the operating budget of most mining operations arises from purchasing and maintaining haulage trucks. Recently, in-pit crushing and conveying (IPCC) has been subject to research because of its potential to reduce haulage costs. The objective of this study is to identify early on in a project, by means of a decisionmaking method, whether or not the semi-mobile IPCC (SMIPCC) is an appropriate alternative to the conventional truck haulage method on the loading and hauling approaches. This method is based on cost analysis and the evaluation of environmental impacts, being successfully tested at an existing open-pit mine, where the results indicated that the IPCC was the most cost-effective option for the operation. Although the IPCC's initial CAPEX was 60% higher than the conventional approach, the IPCC's OPEX was 43% lower, resulting in a 28% reduction of the life-of-mine net present cost (NPC).

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“…The truck fleet size is determined by evaluating the model that is based on the mine's production capacity and operating parameters, specifically, the average haulage distance (AHD). These two factors are very important as they hold great weight in the decision to use the IPCC system (NEHRING et al 2018). By selecting the truck size (model) from one of the four options, the number of trucks is calculated, as well as the number of bulldozers and motor graders required (Figure 7).…”

Section: Methodsmentioning

confidence: 99%

“…SMIPCC systems are considered flexible and adaptable because of the continuous use of trucks and being able to install a crusher in a suitable location (NEHRING et al 2018). The majority of studies that compare IPCC with truck based haulage systems using conveyors, result in large operational savings due to a more efficient energy and capital allocation.…”

Section: Onementioning

confidence: 99%

Technological innovation to support the decision-making process for open pit mining: the application of technological models and semi-mobile in-pit crushing and conveying scenario\'s evaluation.

Nunes¹

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This work presents two innovative ways to evaluate mining projects. The first is the application of a Technological Model in a copper-gold mine and the second is a decision making model to evaluate the benefit of semi-mobile in pit crusher and conveyor alternatives during the early stages of mining projects. In order to improve the process and to maximize the production and/or value of a mining project, there needs to be an integration of the geology, the mine plan, the processing and the geometallurgy data. In order to accomplish this, a new methodology is proposed for the creation of a technological model. This model can be interpreted as the consolidation of the different models required for a better understanding of the geological and technical information of the deposit. This concept was developed and applied at a copper and gold mine site located in Brazil. Based on the evaluation of different blasting and mill productivity scenarios through a pit-to-plant approach, it was possible to obtain operational short-term gains such as a 10.7% increase in the plant production rate and a 2.2% increase in the crusher's feed rate with little or no capital investment. Another important issue faced by mining companies is related to material handling. A significant cost in the operating budget of most mining operations arises from purchasing and maintaining haulage trucks. Recently, in-pit crushing and conveying (IPCC) has been subject to research because of its potential to reduce haulage costs. A decision-making model was created to identify early on in a project whether or not the semi-mobile IPCC (SMIPCC) is an appropriate alternative to the conventional truck haulage based on the loading and hauling approaches. The method is based on cost analysis and the evaluation of environmental impacts, being successfully tested at an existing open-pit mine, where the results indicated that the IPCC was the most cost-effective option for the operation. Although the IPCC's initial CAPEX was 60% higher than the conventional approach, the IPCC's OPEX was 43% lower, resulting in a 28% reduction of the life-of-mine net present cost (NPC).

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A comparison of strategic mine planning approaches for in-pit crushing and conveying, and truck/shovel systems

Cited by 44 publications

References 5 publications

Evaluation and Risk Analysis of Open-Pit Mining Operations

Evaluation and Risk Analysis of Open-Pit Mining Operations

A decision-making method to assess the benefits of a semi-mobile in-pit crushing and conveying alternative during the early stages of a mining project

Technological innovation to support the decision-making process for open pit mining: the application of technological models and semi-mobile in-pit crushing and conveying scenario\'s evaluation.

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