By Team Aakash Byju's | 20th December 2022
Distillation
Zone Refining
Liquation
Electrolytic Refining
A
B
C
D
Detailed Explanation
Zone refining is a method of purifying crystals in which a narrow region of crystal is molten, and this molten zone is moved along the crystal.
Noble-Gas Atmosphere
Induction Coil Heaters Moving as Shown
Molten Zone
Metal Rod
The molten zone melts the impure solid at its front edge, leaving a trace of solidified pure metal.
Zone Movement
Melting Interface
Solid
Liquid
Freezing Interface
Solid
High-purity materials for transistors, such as semiconductors, are primarily prepared using this method.