The process starts by charging solid sinter and heated coke into the top of the blast furnace. Preheated air at 190 to 1,050 °C (370 to 1,920 °F) is blown into the bottom of the furnace. Zinc vapour and sulfides leave through the top and enter the condenser.
Subsequently, can Zn be extracted by smelting?
Lead, iron and zinc can be extracted by smelting process . Aluminum can be extracted by electro metallurgy.
This happens by passing an electric current through cathodes and anodes. The cathodes are removed from the cells and the zinc sheets are stripped from the cathodes and sent to casting. In casting, cathode zinc is melted in furnaces and the molten zinc is made into blocks and ingots.
Furthermore, how do you extract mercury from its ore?
The pyrometallurgical extraction of mercury from its ore is essentially a distillation process. When heat is applied to the sulfide ore in the presence of air, oxygen combines with the sulfur to form sulfur dioxide, and the metal is liberated at a temperature above its boiling point.
How do you melt zinc ingots?
A sweating furnace (rotary, reverberatory, or muffle furnace) slowly heats the scrap containing zinc and other metals to approximately 364°C (687°F). This temperature is sufficient to melt zinc but is still below the melting point of the remaining metals.
How is zinc powder made?
Zinc powder also known as zinc granules is a bluish-gray colored, pure metal powder with particle sizes above 9.0µ. It is produced when purified vapors of zinc are condensed. Some of its characteristics are consistent quality, improved yields and quick reaction time.
How is zinc refined?
The most common process in the refining is electrowinning, which uses an electrolytic cell to reduce the zinc. An electric current is run from a lead-silver anode through a zinc solution. The zinc deposits on an aluminum cathode and is harvested. The zinc is then melted and cast into ingots.
What method is used to extract zinc from its ore?
The most common underground method of ore extraction is cut-and-fill stoping, in which tunnels are dug to moderate depths, branching away from the mine portals. The small fraction of zinc sulfide minerals present in the ore makes beneficiation necessary in order to produce a concentrate suitable for treatment.
Which flux is used for extraction of zinc?
The most commonly available ore used in the extraction of Zinc is called Zinc Blende also known as Zinc Sulphide (ZnS).
Which metal Cannot be extracted by smelting?
Solution : (a) Aluminium cannot be extracted by the smelting process because : <br> (i) `Al`is highly electropositive element and has strong affinity for oxygen. Hence, `Al_(2) O_(3)` is a very stable compound and is not reduced by carbon.
Which metal is used in smelting?
Some of the metals which can be extracted by the smelting process are: Silver. Copper. Iron.