How is zinc extracted from zinc blende with chemical reaction?
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Extraction Of Zinc - Process Of Concentration, Roasting, And Smelting

Zinc is one of the essential elements found abundantly on earth and in almost in many foods. This mineral is even found in the many cells of living organisms and assists the immune system to fight against germs and bacterias. It is located in the group 12 of the periodic table having an atomic number of 30 and its symbol being Zn.
Zinc appears in the form of lustrous and a bluish chemical metal. It is brittle at normal temperatures and is also malleable in nature.
How Zinc Is Obtained From Zinc Blende
Zinc is manufactured from zinc blende in various steps such as concentration, roasting, smelting and purification which are given below in detail.
The first process in the extraction of zinc is the concentration. As shown in the diagram below, this process involves the implementation of froth floatation method for the extraction of zinc ores from zinc blende. Zinc blende is mixed up in a large tank consisting of a mixture of pine oil and water. Later compressed air is passed through this combination. The froth containing the concentrated zinc sulphide ores settles on the surface leaving behind the impurities in water.
Process Of Roasting:
The next step is the process of roasting the ores of zinc. The concentrated ore is then treated at 9000 oc in the presence of excess air, on the base of a reverberatory furnace. This process of heating is called roasting. During this process, zinc oxide is obtained from the zinc sulphide ore. The equation for this process is as shown below
2ZnS + 3O2 —————-2ZnO + 2SO2
Process Of Smelting:
This process is called reduction. The mixture of zinc oxide and coke are heated in the presence of carbon to obtain zinc. The equation for this as shown below-
ZnO + C ————————-Zn + CO
The process is employed in a vertical container. In this whole process, the zinc oxide and coke are mixed in the ratio 2:1 and in the form of a compressed mixture. This mixture is introduced into the furnace and is heated inside at a temperature of about 1400 o c. Zinc is obtained in the form of vapors which later condenses in the condenser which gives out molten zinc or even called as spelter zinc.

Zinc is one of the essential elements found abundantly on earth and in almost in many foods. This mineral is even found in the many cells of living organisms and assists the immune system to fight against germs and bacterias. It is located in the group 12 of the periodic table having an atomic number of 30 and its symbol being Zn.
Zinc appears in the form of lustrous and a bluish chemical metal. It is brittle at normal temperatures and is also malleable in nature.
How Zinc Is Obtained From Zinc Blende
Zinc is manufactured from zinc blende in various steps such as concentration, roasting, smelting and purification which are given below in detail.
The first process in the extraction of zinc is the concentration. As shown in the diagram below, this process involves the implementation of froth floatation method for the extraction of zinc ores from zinc blende. Zinc blende is mixed up in a large tank consisting of a mixture of pine oil and water. Later compressed air is passed through this combination. The froth containing the concentrated zinc sulphide ores settles on the surface leaving behind the impurities in water.
Process Of Roasting:
The next step is the process of roasting the ores of zinc. The concentrated ore is then treated at 9000 oc in the presence of excess air, on the base of a reverberatory furnace. This process of heating is called roasting. During this process, zinc oxide is obtained from the zinc sulphide ore. The equation for this process is as shown below
2ZnS + 3O2 —————-2ZnO + 2SO2
Process Of Smelting:
This process is called reduction. The mixture of zinc oxide and coke are heated in the presence of carbon to obtain zinc. The equation for this as shown below-
ZnO + C ————————-Zn + CO
The process is employed in a vertical container. In this whole process, the zinc oxide and coke are mixed in the ratio 2:1 and in the form of a compressed mixture. This mixture is introduced into the furnace and is heated inside at a temperature of about 1400 o c. Zinc is obtained in the form of vapors which later condenses in the condenser which gives out molten zinc or even called as spelter zinc.
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