Advertisements
Advertisements
Question
Observe the figure and name and explain in brief the following method:
Advertisements
Solution
The method shown in the figure is the magnetic separation method.
- The magnetic separation process is based on the differences in magnetic properties of the ore components.
- This method requires an electromagnetic machine which consists of a nonmagnetic conveyor belt moving over two rollers, one of which is magnetic in nature while the other is nonmagnetic.
- The powdered ore is dropped over the moving belt near the nonmagnetic roller. Two collector vessels are placed below the magnetic roller.
- The nonmagnetic particles are carried further along with the belt and fall in the collector's vessel placed away from the magnetic roller. At the same time, the magnetic portion of the ore is attracted by the magnetic roller and falls in the collector vessel near the magnetic roller.
APPEARS IN
RELATED QUESTIONS
Give the importance of the following for living beings:
Nitrogen
Define the term ‘metallurgy’. State the processes involved in metallurgy ?
Name:
(b) two metallic oxides which cannot be reduced by carbon, carbon monoxide or hydrogen
An ore on being heated in air forms sulphurous anhydride. Write the process used for the concentration of this ore.
`ZnCO_3`
..............................
Give the ionization reactions of electrolyte used in Hall’s process. write the reaction at the cathode and the anode. Why the anode has to be replaced in this process?
Where are the cathode and anode in the electrolytic cell? Name the material used for these?
state the reactions at the two electrodes ?
Distinguish between electrolytic methods of reduction and refining.
Explain the term of Metallurgy .
Write scientific reason.
Magnetic separation method is used to separate the magnetic ingredients in the ores.
Explain concept with example/explain with the help of a balanced equation.
Gangue
Complete flow chart given below.
Explain the froth floatation method with a neat labelled diagram.
The chemical name of rust is ______.
After partial roasting, the sulphide of copper is reduced by ______.
Name the process that is employed to refine aluminium.
