Roasting or calcination is not an essential step to extract metal from this ore

Roasting and calcination are

The extraction of metal from the ore is

In the stages involved in the extraction of metals in general - give reasons for following Conversion of concentrated ore to its oxide is an essential step in the ectraction of metals from the ore, even the step is not necessary in the metallurgy of aluminium.

In the stages involved in the extraction of metals in general - give reasons for following Dressing of the ore is an essential process in the extraction of metal from its ore.

The important step in the extraction of metal from carbonate ore is

The important step in the extraction of metal from carbonate ore is

List three main steps in the extraction of a metal from its ores.