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What is the primary purpose of the magnetic roller in the electromagnetic separation process?
What is the primary purpose of the magnetic roller in the electromagnetic separation process?
Which minerals are separated using the electromagnetic separation process?
Which minerals are separated using the electromagnetic separation process?
What is the characteristic of sulphide particles that makes them suitable for the froth floatation process?
What is the characteristic of sulphide particles that makes them suitable for the froth floatation process?
What is the purpose of roasting in the concentration of ore?
What is the purpose of roasting in the concentration of ore?
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What is the role of compressed air in the froth flotation process?
What is the role of compressed air in the froth flotation process?
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What is the main difference between the electromagnetic separation process and the froth floatation process?
What is the main difference between the electromagnetic separation process and the froth floatation process?
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What is the purpose of the oil in the froth flotation process?
What is the purpose of the oil in the froth flotation process?
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What is the final product of the electromagnetic separation process?
What is the final product of the electromagnetic separation process?
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What is the advantage of the froth flotation process?
What is the advantage of the froth flotation process?
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What is the purpose of the belt in the electromagnetic separation process?
What is the purpose of the belt in the electromagnetic separation process?
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What is the definition of roasting?
What is the definition of roasting?
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What is the characteristic of wolframite that makes it suitable for the electromagnetic separation process?
What is the characteristic of wolframite that makes it suitable for the electromagnetic separation process?
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What are the two types of chemical processes mentioned in the text?
What are the two types of chemical processes mentioned in the text?
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What is the purpose of the basin in the froth flotation process?
What is the purpose of the basin in the froth flotation process?
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What is the role of the gangue material in the froth flotation process?
What is the role of the gangue material in the froth flotation process?
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What is the purpose of adding oil to the mixture in the froth flotation process?
What is the purpose of adding oil to the mixture in the froth flotation process?
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What is the primary force responsible for the separation of metallic particles from gangue in the Gravity Separation Process?
What is the primary force responsible for the separation of metallic particles from gangue in the Gravity Separation Process?
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Which type of ore is commonly concentrated using the Gravity Separation Process?
Which type of ore is commonly concentrated using the Gravity Separation Process?
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What is the purpose of the Electromagnetic Separation Process?
What is the purpose of the Electromagnetic Separation Process?
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What is the name of the process in which the crushed ore is treated with a running stream of water?
What is the name of the process in which the crushed ore is treated with a running stream of water?
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What happens to the light particles of gangue in the Gravity Separation Process?
What happens to the light particles of gangue in the Gravity Separation Process?
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What type of ore contains impurities that are magnetic in nature and cannot be removed by other methods?
What type of ore contains impurities that are magnetic in nature and cannot be removed by other methods?
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What is the name of the process in which the crushed ore is treated with an electromagnetic field to separate the magnetic impurities?
What is the name of the process in which the crushed ore is treated with an electromagnetic field to separate the magnetic impurities?
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Which of the following processes is not mentioned in the text?
Which of the following processes is not mentioned in the text?
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Study Notes
Electromagnetic Separation Process
- Wolframite (FeWO4) is removed from the ore by allowing powdered ore to fall on a belt passing over a magnetic roller.
- The magnetic roller attracts the magnetic nature of the ore, causing it to fall in a heap, while the non-magnetic tin-stone is collected in another heap.
- This process is used to separate magnetite, pyrite from ZnS, and roasted iron and manganese from tin-stone, SnO2 from impurities like tungstates.
Gravity Separation Process
- Crushed ore is treated to a running stream of water, where light particles of gangue are washed away, and heavy metallic particles settle down at the bottom due to gravitational forces.
- This process is used to concentrate heavy oxide ores, such as tin-stone, haematite, and noble metals.
Froth Floatation Process
- This process is used to concentrate sulphide ores, such as galena (PbS), Zinc blend (ZnS), and copper pyrites (CuFeS2).
- Sulphide particles attach to oil bubbles, and the mixture is agitated with compressed air, causing the sulphide particles to float to the surface and form froth.
- The impurities are wetted by water and settle at the bottom of the tank.
- The oils used for this process are pine oil, cresylic oil, and sometimes alcohol.
Chemical Process
- There are two types of chemical processes: Roasting and Calcination.
- Roasting is the process of heating the ores in the presence of air to a temperature at which the ores do not melt.
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Description
This quiz is about the process of magnetic separation of wolframite from ore. It involves the use of a magnetic roller and a belt to separate the magnetic and non-magnetic components.