Copper matte contains Cu2S and Fes.

The process of heating the ore strongly either in a limited supply of oxygen or air or in the absence of air is called calcination.

The process of reduction of a metal oxide to the metal with the help of aluminium powder is called aluminothermy.

Chemical compounds like cresols and aniline which tend to stabilize the froth are called froth stabilizers.

(a) This is because the sulphide ore particles are preferentially wetted by oil and gangue particles are preferentially wetted by water.
(b) Froth floatation is the process employed for the extraction of metals from their sulphide ores like ZnS.

Froth Floatation

The earthy and silicious impurities associated with the ores is called gangue

The process used to concentrate an ore is called the benefaction process.For example,froth floatation,electromagnetic separation,leaching,etc.

Flux is used for making the molten mass more conducting and it reacts with gangue to form slag which can be easily removed.

It is because oxides ores can be easily reduced, whereas sulphide ores cannot be reduced easily.

The process of reducing a metal oxide with coke or any other reducing agent at high temperature is called pyrometallurgy. In other words, it is a thermal process of extracting a metal from its ore.

Silica acts as a flux.

Those ores which are magnetic in nature, i.e. attracted by magnet, whereas impurities are non-magnetic in nature or vice-versa are concentrated by magnetic separation method.

Mineral is a naturally occuring substance from which metal may or may not be extracted profitably.

Ore is a naturally occuring rocky material which contains sufficient quantity of mineral from which metal can be extracted profitably and conveniently.

Collectors like pine oil, fatty acids, xanthates enhance non-wettability of mineral particles.

roasting

Leaching

Sulphide

Magnetic separation

Al

Extraction of Au

Fractional distillation

Zone refining

Mond Process

Chromatogrphy