Question

hi guys..........❤❤plzz define me methods for extraction of ore........❤❤❤❤❤​

Answer 1

Answer

1. mining :- ore obtain in big lumps( less reactuve).

2.crshing/grinding/pulverusation :- big lumps converted into powder.( more reacrive)

3.concentration of ore :- to remove gangue ( impurity)

physical processes :-

=>gravity seperation / hydrolic washing / levigation

( based on principle of gravity)

=>magnetic seperation

=>froth floatation ( for sulphide ores)

chemical process

=> for Al , Au, Ag ( cynide process)

dissolve in such solvent in which metallic ore is soluble only. impurity not.

4.calcination and roasting

5. self reduction

6.carbin reduction( smelting)

7.aluminium reduction method

8.metal displacement reduction

9.electeolytic reduction.

10. Refining

note :- carbon is the most used element in meturllergy it completely change the materllergy branch of chemistry. it is cheap easily available and most of the metal can be easily reduced by carbon.

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Answer 2

Answer:

There are 3 main methods of extracting metals from their ore.

They are reduction of the ore with carbon, reduction of the molten ore by electrolysis, and reduction of the ore with a more reactive metal.