The chemical reduction of a metal from its ore by a process usually involving fusion, so that earthy and other impurities separate as lighter and more fusible slags and can readily be removed from the reduced metal. An example is the reduction of iron ore (iron oxide) by coke in a blast furnace to produce pig iron.
What is smelting give two example?
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 smelting in chemistry 12th class?
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 are the two types of smelting?
extraction and refining
…are two types of smelting, reduction smelting and matte smelting.
What is smelting used for?
smelting, process by which a metal is obtained, either as the element or as a simple compound, from its ore by heating beyond the melting point, ordinarily in the presence of oxidizing agents, such as air, or reducing agents, such as coke.
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 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 smelting very very short answer?
Smelting is a process by which a metal is extracted, either as the element or as a simple compound, from its ore by heating beyond the melting point, ordinarily in the presence of oxidizing agents, such as air, or reducing agents, such as coke. It is a form of extractive metallurgy.
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 class 11 history?
However, until the eighteenth century, there was a scarcity of usable iron. Iron is drawn out from ore as pure liquid metal by a process called smelting. For centuries, charcoal (from burnt timber) was used for the smelting process.
What is another word for smelting?
What is another word for smelting?
| melting down | melting |
|---|---|
| diffusing | dissolving |
| liquefying | liquescing |
| liquifying | thawing |
| reducing | rendering |
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 equipment is used for smelting?
Steel is smelted in open-hearth furnaces and in side-blowing converters. Refractory metals and some special steels and alloys are smelted in plasma-jet and electron-beam furnaces. Skip hoists, monorail cranes, and bridge conveyors are used to load furnaces. Carbon monoxide is burned off as a waste gas.
What are the advantages of smelting?
It can improve the hearth efficiency and melt temperature; reduce copper rate in slag and improve the recovery rate; reduce coke rate; SO2 concentration in furnace gas increases and reduce the environmental pollution.
What is the 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.
Which metals can be extracted by smelting?
Lead, iron and zinc can be extracted by smelting process .
Which is the example of metallurgy Class 10?
(1) Grinding and crushing: The first method of metallurgy is the grinding of ores in a crusher or ball mill into a fine powder. This method is called pulverization. (2) Concentration of ores: The process of removing impurities from the ore is known as mineral concentration of ore dressing.
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 is the difference between roasting and smelting?
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.
Why is it called smelting?
The smelting process melts the ore, usually for a chemical change to separate the metal, thereby reducing or refining it. The smelting process requires lots of energy to extract the metal from the other elements. There are other methods of extraction of pure metals from their ores.
What is a smelting plant?
Description. Metal processing plants and smelters are facilities that extract various metals from ore to create more refined metal products. Metals include copper, nickel, lead, zinc, silver, cobalt, gold, cadmium, etc.