Advertisements
Advertisements
प्रश्न
Explain the hydraulic separation method with a neat labelled diagram.
Advertisements
उत्तर
- This method is based on the working of a mill.
- It has a tapering vessel similar to that used in grinding mill. The tapering vessel opens up in a tank-like container that is tapering on the lower side. The tank has a water inlet on the lower side and a water outlet on the upper side.
- The powdered ore is released in the tank and forceful stream of water is introduced into the tank through the water inlet at the bottom.
- The lighter particles of the gangue are carried up by the water jet and pass out along with water flowing out from the outlet near the top and get collected separately while the heavier ore particles are collected at the bottom from the lower side of the tank.
- The reservoir is constructed in a conical shape so that the velocity of the water jet is reduced, thus preventing ore particles from being carried away along with the stream of water.
- This method is based on the principle of gravitation law, wherein particles of identical size are separated by their weight with the help of water.
Hydraulic separation method
APPEARS IN
संबंधित प्रश्न
Give the importance of the following for living beings:
Hydrogen
Metal A has an electronic configuration of 2, 8, 1 and metal B has 2, 8, 8, 2 which is more reactive metal.
Identify A and B and give their reactions with dil HCL and dil H2SO4 ?
A student has been collecting silver coins and copper coins. One day she observed a black
coating on silver coins and a green coating on copper coins. Which chemical phenomenon is
responsible for these coatings? Write the names of black and green coatings.
Define the term ‘metallurgy’. State the processes involved in metallurgy ?
Name the processes involved in refining of ores.
Explain the following terms:
(a) flux
Explain the following term:
Gangue
Name the methods used for purification?
`2Pb(NO3)_2`
.........................
Where are the cathode and anode in the electrolytic cell? Name the material used for these?
what does it form with silica present in the ore?
Which metal is used for:
lithographic plates for printing
Aluminium is extracted from its chief ore, bauxite. The ore is first purified and then the metal is extracted from it by electrolytic reduction.
Write three balanced equations for the purification of bauxite.
Explain the term Metallurgy.
Complete flow chart given below.
Observe the figure and name and explain in brief the following method:
Which of the following methods is used to separate wolframite and stannic oxide present in cassiterite?
Limestone is used as a flux in the extraction of ______.
In leaching of alumina from bauxite by Bayer's process, then ore is treated with ______.
Name the process that is employed to refine aluminium.
