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Questions and Answers
What is the prime objective of any mining project?
What is the prime objective of any mining project?
- To maximize the return on investment (correct)
- To minimize environmental impact
- To comply with hydrological parameters
- To ensure complete resource recovery
What must be considered in a comparison of surface mining methods?
What must be considered in a comparison of surface mining methods?
- Complying with mineralogy constraints
- Developing the most economic plan for the overall project (correct)
- Maximizing the recovery of the resource
- Minimizing the ore body size
What makes each mining operation unique?
What makes each mining operation unique?
- Ore body location, size, and grade (correct)
- Hydrological compliance
- Environmental impact assessment
- Mineralogy constraints
What is included in the admission for CIM Sudbury Student Night?
What is included in the admission for CIM Sudbury Student Night?
What is the reduced student membership fee for CIM Sudbury events?
What is the reduced student membership fee for CIM Sudbury events?
What is the purpose of the bus provided for transportation by CIM Sudbury?
What is the purpose of the bus provided for transportation by CIM Sudbury?
What is the main focus of the course ENGR 2106 Fall 2023 Lec10 Surface Mining II?
What is the main focus of the course ENGR 2106 Fall 2023 Lec10 Surface Mining II?
Which method of mining involves the use of water or liquid solvent to recover minerals from the earth?
Which method of mining involves the use of water or liquid solvent to recover minerals from the earth?
What is the primary crusher crucial for in In-Pit Crushing and Conveying (IPCC) systems?
What is the primary crusher crucial for in In-Pit Crushing and Conveying (IPCC) systems?
In surface mining, what is the main purpose of haul roads and ramps?
In surface mining, what is the main purpose of haul roads and ramps?
What is a characteristic of medium to hard rock mining without blasting?
What is a characteristic of medium to hard rock mining without blasting?
When is In-Pit Crushing and Conveying (IPCC) used?
When is In-Pit Crushing and Conveying (IPCC) used?
What is a common feature of open-pit and strip (open-cast) mining?
What is a common feature of open-pit and strip (open-cast) mining?
What is the primary characteristic of high-wall mining?
What is the primary characteristic of high-wall mining?
In surface mining, what is the purpose of in-situ leaching?
In surface mining, what is the purpose of in-situ leaching?
What is the primary purpose of auger mining?
What is the primary purpose of auger mining?
What is a disadvantage of auger mining?
What is a disadvantage of auger mining?
What is the primary advantage of highwall mining over auger mining?
What is the primary advantage of highwall mining over auger mining?
What equipment is used in continuous mining systems?
What equipment is used in continuous mining systems?
What is the function of surface miners in mining operations?
What is the function of surface miners in mining operations?
What is a potential issue associated with auger mining?
What is a potential issue associated with auger mining?
What is the depth to which auger cutting heads can be drilled?
What is the depth to which auger cutting heads can be drilled?
What is a common element between highwall mining and continuous mining machine?
What is a common element between highwall mining and continuous mining machine?
What is a disadvantage of highwall mining?
What is a disadvantage of highwall mining?
What is the primary function of continuous mining systems?
What is the primary function of continuous mining systems?
What is the primary function of highwall and auger mining?
What is the primary function of highwall and auger mining?
What is the purpose of surface miners in coal recovery?
What is the purpose of surface miners in coal recovery?
What is the date for the CIM Sudbury Student Night event?
What is the date for the CIM Sudbury Student Night event?
What is the reduced student membership fee for CIM Sudbury events?
What is the reduced student membership fee for CIM Sudbury events?
What is included in the admission for CIM Sudbury Student Night?
What is included in the admission for CIM Sudbury Student Night?
What is the purpose of Auger mining?
What is the purpose of Auger mining?
What is the primary purpose of In-Pit Crushing and Conveying (IPCC) systems?
What is the primary purpose of In-Pit Crushing and Conveying (IPCC) systems?
What is the main characteristic of high-wall mining?
What is the main characteristic of high-wall mining?
What is the common feature of open-pit and strip (open-cast) mining?
What is the common feature of open-pit and strip (open-cast) mining?
When is In-Pit Crushing and Conveying (IPCC) used?
When is In-Pit Crushing and Conveying (IPCC) used?
What is the primary focus of Aqueous extraction methods in surface mining?
What is the primary focus of Aqueous extraction methods in surface mining?
What is the main characteristic of medium to hard rock mining without blasting?
What is the main characteristic of medium to hard rock mining without blasting?
What is the primary purpose of haul roads and ramps in surface mining?
What is the primary purpose of haul roads and ramps in surface mining?
What is the main objective of any mining project with In-Pit Crushing and Conveying (IPCC) systems?
What is the main objective of any mining project with In-Pit Crushing and Conveying (IPCC) systems?
What is the primary function of auger mining?
What is the primary function of auger mining?
What is a disadvantage of highwall mining?
What is a disadvantage of highwall mining?
What equipment is used in continuous mining systems?
What equipment is used in continuous mining systems?
What is the primary advantage of highwall mining over auger mining?
What is the primary advantage of highwall mining over auger mining?
What is the primary purpose of highwall and auger mining?
What is the primary purpose of highwall and auger mining?
What is a potential issue associated with auger mining?
What is a potential issue associated with auger mining?
What is the depth to which auger cutting heads can be drilled?
What is the depth to which auger cutting heads can be drilled?
What is a common element between highwall mining and continuous mining machine?
What is a common element between highwall mining and continuous mining machine?
What is the main function of surface miners in mining operations?
What is the main function of surface miners in mining operations?
When is In-Pit Crushing and Conveying (IPCC) used?
When is In-Pit Crushing and Conveying (IPCC) used?
What must be considered in a comparison of surface mining methods?
What must be considered in a comparison of surface mining methods?
What is the primary purpose of continuous mining systems?
What is the primary purpose of continuous mining systems?
What is the primary purpose of auger mining?
What is the primary purpose of auger mining?
What is a disadvantage of auger mining?
What is a disadvantage of auger mining?
What is the depth to which auger cutting heads can be drilled?
What is the depth to which auger cutting heads can be drilled?
What percentage of the reserve (coal) remains in place and is difficult to be recovered in auger mining?
What percentage of the reserve (coal) remains in place and is difficult to be recovered in auger mining?
What is the primary function of highwall mining?
What is the primary function of highwall mining?
What is a potential issue associated with auger mining?
What is a potential issue associated with auger mining?
What equipment is used in highwall mining?
What equipment is used in highwall mining?
When is In-Pit Crushing and Conveying (IPCC) used?
When is In-Pit Crushing and Conveying (IPCC) used?
What is the main function of continuous mining systems?
What is the main function of continuous mining systems?
What is the primary purpose of In-Pit Crushing and Conveying (IPCC) systems?
What is the primary purpose of In-Pit Crushing and Conveying (IPCC) systems?
What is a common element between highwall mining and continuous mining machine?
What is a common element between highwall mining and continuous mining machine?
What is the primary method used to recover minerals from the earth using water or liquid solvent?
What is the primary method used to recover minerals from the earth using water or liquid solvent?
Study Notes
Coal Recovery Methods in Mining
- Auger mining is used to recover coal beyond highwall limits after strip mining when economic limit is reached
- Auger mining involves boring horizontally into the coal seam at the high wall, with the rotating action of the auger cutting and pushing out coal
- Around one-third of the coal under the highwall can be recovered through auger mining at a low cost
- Auger cutting heads can be as large as 2m in diameter and drilled to a depth of more than 90m
- Disadvantages of auger mining include leaving about 65% of the coal reserve in place, creating drainage holes for acid-laden water, and facing surface subsidence and spontaneous combustion in the auger holes
- Highwall mining is similar to auger mining, but uses different equipment and shares common elements with a continuous mining machine
- The highwall miner can advance more than 360m under the highwall and recover around 50% of the coal under the highwall
- The highwall miner's production rate is much higher than auger mining and can be adjusted more easily to varying seam thickness
- Basic functions for the extraction in highwall and auger mining include determining hole width, web pillar width, coal left in place between holes, barrier pillar width, and the number of holes between barrier pillars
- Continuous mining systems use equipment such as Bucket Wheel Excavators (BWE), Bucket Chain Excavators (BCE), and Belt Conveyors to quickly remove overburden
- Surface miners loosen rock, crush it, and load it onto the transportation system
- These mining methods play a crucial role in coal recovery and have specific advantages and disadvantages that need to be considered in mining operations.
Coal Recovery Methods in Mining
- Auger mining is used to recover coal beyond highwall limits after strip mining when economic limit is reached
- Auger mining involves boring horizontally into the coal seam at the high wall, with the rotating action of the auger cutting and pushing out coal
- Around one-third of the coal under the highwall can be recovered through auger mining at a low cost
- Auger cutting heads can be as large as 2m in diameter and drilled to a depth of more than 90m
- Disadvantages of auger mining include leaving about 65% of the coal reserve in place, creating drainage holes for acid-laden water, and facing surface subsidence and spontaneous combustion in the auger holes
- Highwall mining is similar to auger mining, but uses different equipment and shares common elements with a continuous mining machine
- The highwall miner can advance more than 360m under the highwall and recover around 50% of the coal under the highwall
- The highwall miner's production rate is much higher than auger mining and can be adjusted more easily to varying seam thickness
- Basic functions for the extraction in highwall and auger mining include determining hole width, web pillar width, coal left in place between holes, barrier pillar width, and the number of holes between barrier pillars
- Continuous mining systems use equipment such as Bucket Wheel Excavators (BWE), Bucket Chain Excavators (BCE), and Belt Conveyors to quickly remove overburden
- Surface miners loosen rock, crush it, and load it onto the transportation system
- These mining methods play a crucial role in coal recovery and have specific advantages and disadvantages that need to be considered in mining operations.
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Description
Test your knowledge of mining operations with this quiz that covers key factors such as ore body characteristics, constraints, and the prime objective of maximizing return on investment. Delve into comparisons of surface mining methods and discover the two prime objectives of mine planning.
