1. Tardigrade
  2. Question
  3. Chemistry
  4. Calcination can be employed for the how many of the following ores? Limonite, siderite, zincite, zinc blende, calamine, cryolite, wolframite, cassiterite

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Q. Calcination can be employed for the how many of the following ores?
Limonite, siderite, zincite, zinc blende, calamine, cryolite, wolframite, cassiterite

General Principles and Processes of Isolation of Elements

Solution:

Limonite $-2 Fe _{2} O _{3} .3 H _{2} O$
Siderite $- FeCO _{3}$
Zincite - $ZnO$
Zinc blende - $ZnS$
Calamine $- ZnCO _{3}$
Cryolite - $Na _{3} AlF _{6}$
Wolframite $- FeWO _{4}$
Cassiterite - $SnO _{2}$
Calcination is generally employed for carbonat and hydrated oxide ores. Hence, calcination ca be employed for limonite, siderite and calamine