minimum cut off grade of underground copper mine

Understanding Cut Off Grade 6 Sustaining Capital or
2020 10 21   Selection of the right cut off is a critical underlying factor in delivering maximum value. Inclusion of SustEx in the cut off calculation will generally deliver better economics than using OpEx only. Get Price
KANMANTOO UNDERGROUND COPPER MINE GROWTH
The 1% Cu contour has been assessed to be a reasonable underground ore cutoff grade. A minimum horizontal width of the >1% Cu material of 5 metres has been applied to the grade control and/or exploration drill hole data sets. A minimum vertical continuity of 100 metres of the >1% Cu material demonstrated from blast hole or drill hole data. Get Price
Study on Optimum of Cutoff Grade in Underground Mine
Keywords: Cutoff grade Underground mining Dynamic programming Optimization CLC: TD862.1 Type: Master's thesis Year: 2008 Downloads: 74 Quote: 0 optimal cutoff grade of Chambishi copper mine was obtained, using the dynamic programming model of cutoff grade optimization. The Optimization result is:On the whole, the cutoff grade of using Get Price
A New Mathematical Formulation for Underground Cut
2021 6 28   The mining industry is facing increasingly lower grades, which intensifies the need to reduce costs. The depletion of orebodies close to the surface has pushed the mining industry to progressively explore and extract deposits through underground mining. One approach that is receiving more attention is the application of pre concentration systems prior to introducing the Get Price
Stripping Ratios, Pit Limits & Cutoff Grade
Optimum cut off grade policy for open pit mining operations through net present value algorithm considering metal price and cost escalation. By Raul Cezar. Maximizing the net present value by applying an optimal cut off grade for long Get Price
Study on Optimum of Cutoff Grade in Underground Mine
Keywords: Cutoff grade Underground mining Dynamic programming Optimization CLC: TD862.1 Type: Master's thesis Year: 2008 Downloads: 74 Quote: 0 optimal cutoff grade of Chambishi copper mine was obtained, using the dynamic programming model of cutoff grade optimization. The Optimization result is:On the whole, the cutoff grade of using Get Price
KANMANTOO UNDERGROUND COPPER MINE GROWTH
The 1% Cu contour has been assessed to be a reasonable underground ore cutoff grade. A minimum horizontal width of the >1% Cu material of 5 metres has been applied to the grade control and/or exploration drill hole data sets. A minimum vertical continuity of 100 metres of the >1% Cu material demonstrated from blast hole or drill hole data. Get Price
Cut off Grade and Mine Optimization Services
Goldcorp Corporate Cut Off Grade Policy for all Open Pit, Underground Mines, Projects and Studies in 2019. Following up on the completion of a major gold mining company's operations cut off grade strategic optimization study earlier in 2018, SRK Sudbury has been commissioned by the same company to generate a corporate cut off grade policy Get Price
Major Open Pit Copper Mines Move Underground
2020 4 8   Chuquicamata Subterránea. After more than 100 years of production, Codelco's Chuquicamata, one of the greatest open pit copper mines, which is located in northern Chile, will deplete its surface minable reserves and move to underground production by 2018. This is a significant milestone for one of the world's largest copper producers. Get Price
Optimisation of Cut off Grades During Design of
Perfect application of an optimum cut off grade should ensure that only ore generating more than a minimum net return is mined, and that as much as possible of the ore capable of generating that return is mined._x000D_. Therefore differing mining costs in different parts of some underground mines necessitate local modifications to cut off grade. Get Price

The choice of the cutoff grade in mining

2003 9 1   The optimal cutoff grade depends on all the salient technological features of mining, such as the capacity of extraction and of milling, the geometry and geology of the orebody, and the optimal grade of concentrate to send to the smelter. An underground mine is typically developed in levels, with drifts tunnels driven into the rock Get Price
KANMANTOO UNDERGROUND COPPER MINE GROWTH
2017 5 24   The 1% Cu contour has been assessed to be a reasonable underground ore cutoff grade. A minimum horizontal width of the >1% Cu material of 5 metres has been applied to the grade control and/or exploration drill hole data sets. A minimum vertical continuity of 100 metres of the >1% Cu material demonstrated from blast hole or drill hole data. Get Price
mine cutoff grade
mineral processing. In mining: Delineation. This is called the mine cutoff grade. And, if the material has already been mined, there is a certain grade below which it is not profitable to process it; this is the mill cutoff grade. The grade at which the costs associated with mining and mineral processing just equal. Get Price

A review of cut off grade policy models for open pit

2016 9 1   Cut off grade is the most important economic criterion that defines the supply of ore and waste material from the mine to subsequent processing streams and waste dumps, respectively King, 1999, King, 2001, Wooler, 2001 .The material with metal content greater than the cut off grade is designated as ore because under existing economic situation, not only this Get Price

Dynamic optimization of cutoff grade in underground

2010 6 1   Xiao wei et. al. 2010 employed Dynamic Programming to optimize cut off grade in an underground African copper mine. Abdollahisharif et. al. 2012 presented a further variation of Lane's Get Price
Cut off Grade and Mine Optimization Services
Goldcorp Corporate Cut Off Grade Policy for all Open Pit, Underground Mines, Projects and Studies in 2019. Following up on the completion of a major gold mining company's operations cut off grade strategic optimization study earlier Get Price
Major Open Pit Copper Mines Move Underground
2020 4 8   Chuquicamata Subterránea. After more than 100 years of production, Codelco's Chuquicamata, one of the greatest open pit copper mines, which is located in northern Chile, will deplete its surface minable reserves and move to underground production by 2018. This is a significant milestone for one of the world's largest copper producers. Get Price