Advertisements
Advertisements
प्रश्न
Identify the following method of concentration of ores and explain briefly.
Advertisements
उत्तर
- This method represents Wilfley’s table of concentration of ores.
- Explanation:
- Wilfley’s table is made by fixing narrow, thin and long wooden riffles on an inclined surface.
- The table is given a regular vibrating motion.
- The powdered ore obtained from lumps of the ore using ball mill is fed on the top of Wilfley’s table and running stream of water is also released from the upper side.
- As a result, the lighter gangue particles are carried away by water and heavy ore particles in which proportion of minerals is more, settle between the wooden riffles fixed on the table and get collected on the slits between them.
APPEARS IN
संबंधित प्रश्न
Why are alkali metals kept in kerosene oil?
Name:
(a) the processes involved in
concentration :-
Name the processes involved in refining of ores.
Explain the following terms:
smelting
`Ag2O`
................................
`MnO_2 + 4Al` 
…………….
`Cu (OH)2`
................................
`2Cu_2O +Cu_2S`
......................
`HgS + O_2`
..................
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?
Why is flux used in the blast furnace?
Distinguish between electrolytic methods of reduction and refining.
What is magnalium? Name the main elements present in it? Write its one use ?
Complete the following flow chart and answer the questions below:
i) In which method pine oil is used?
ii) Explain what method of concentration in brief.
Distinguish between:
Froth floatation - Leaching
Explain the hydraulic separation method with a neat labelled diagram.
Chemical formula of rust is ______
A process of extracting metals from aqueous solutions of their salts using suitable reducing agents is called ______
Identify false statement regarding lithium aluminium hydride?
