Smelting is the process of reducing the roasted metallic oxide to a metal. In this process, impurities are removed by the addition of appropriate flux. It reduces the oxide ore to metals in its molten state.
What do you mean by smelting?
Smelting is a form of extractive metallurgy to produce a metal from its ore. Smelting uses heat and a chemical reducing agent to decompose the ore, driving off other elements as gasses or slag and leaving just the metal behind. The reducing agent is commonly a source of carbon such as coke, charcoal, and coal.
What is smelting Class 11?
Smelting is a method of extractive metallurgy. It involves the process of heating an ore for the extraction of the base metal. It is a very significant process in metallurgy and is used commonly for the extraction of metals like iron.
What is smelting Toppr?
Smelting: It is a process of extracting the impure metal from its ore at a high temperature in an enclosed furnace using a suitable flux and a reducing agent.
What is smelting and electrolysis?
process. In metallurgy: Electrolytic smelting. Smelting is also carried out by the electrolytic dissociation, at high temperatures, of a liquid metallic chloride compound (as is done with magnesium) or of a metallic oxide powder dissolved in molten electrolyte (as is done with aluminum).
What is the difference between melting and smelting?
Melting: Melting is the process by which a substance changes from the solid phase to the liquid phase. Smelting: Smelting is the process by which a metal is obtained at temperatures beyond the melting point from its ore.
What is another word for smelting?
What is another word for smelting?
| melting down | melting |
|---|---|
| diffusing | dissolving |
| liquefying | liquescing |
| liquifying | thawing |
| reducing | rendering |
What is flux in chemistry class 12?
(a) Flux: A flux is a substance that is added to the charge in a furnace to remove the gangue. (b) Gangue: Earthly impurities including silica, mud etc., associated with the ore are called gangue. (c) Slag: It is the fusible product formed when flux reacts with impurities during the extraction of metals.
Is metallurgy Class 11 or 12?
NCERT Class 12 Chemistry Chapter 6 Notes – Metallurgy is extremely important for your class 12 Inorganic Chemistry syllabus. Metallurgy is one of those chapters with the most practical applications.
Who invented smelting?
The development of iron smelting was traditionally attributed to the Hittites of Anatolia of the Late Bronze Age. It was believed that they maintained a monopoly on iron working, and that their empire had been based on that advantage.
What is smelting and roasting?
Roasting, or heating in air without fusion, transforms sulfide ores into oxides, the sulfur escaping as sulfur dioxide, a gas. Smelting (q.v.) is the process used in blast furnaces to reduce iron ores. Tin, copper, and lead ores are also smelted.
What is smelting explain with an example shaala?
It is a process of extracting the impure molten metal from its ore at a high temperature using suitable flux and reducing agent. Concept: General Principles and Processes of Isolation of Elements – Principles and Methods of Extraction – Concentration.
What is roasting Class 12?
Roasting is a process of metallurgy where ore is converted into its oxide by heating it above its melting point in the presence of excess air. It is a method used for converting sulphide ores to their respective oxides.
What are the two types of smelting?
extraction and refining
…are two types of smelting, reduction smelting and matte smelting.
What is smelting in metal processing?
Smelting is a process of applying heat to ore, to extract a base metal. It is a form of extractive metallurgy. It is used to extract many metals from their ores, including silver, iron, copper, and other base metals.
What is difference between smelting and refining?
In metallurgy, refining consists of purifying an impure metal. It is to be distinguished from other processes such as smelting and calcining in that those two involve a chemical change to the raw material, whereas in refining, the final material is usually identical chemically to the original one, only it is purer.
What is the process of smelting copper?
In the smelting process, either hot calcine from the roaster or raw unroasted concentrate is melted with siliceous flux in a smelting furnace to produce copper matte. The required heat comes from partial oxidation of the sulfide charge and from burning external fuel.
What gas is released in the process of smelting?
Sulfur dioxide (SO2) is a major air pollutant emitted during roasting, smelting, and the conversion of zinc, lead, copper, and nickel sulfide ore. Sulfur dioxide emission is controlled by conversion to sulfuric acid or recovery as liquid sulfur dioxide or elemental sulfur.
What is difference between blast furnace and smelting?
Blast furnaces are similar to furnaces, but can smelt only raw ore, ore blocks and tools/armor made of iron, gold or chainmail. Blast furnaces serve as the counterpart to smokers, which are used mainly to cook food faster. Smelting equipment yields one iron or gold nugget from their respective materials.
How do you use smelt in a sentence?
How to use Smelt in a sentence. He smelt strongly of rum. They also weave cloth, make pottery and smelt iron.
Is smelt a white fish?
smelt, any of certain silvery, chiefly marine food fishes, family Osmeridae, closely related to salmon and trout and found in cold northern waters.