Question

What is Ellingham Diagram ? What is uses for?​

Answer 1

❗ ANSWER ❗

An Ellingham diagram is a graph showing the temperature dependence of the stability of compounds. This analysis is usually used to evaluate the ease of reduction of metal oxides and sulfides. These diagrams were first constructed by Harold Ellingham in 1944.

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Answer 2

Explanation:

An Ellingham diagram is a graph showing the temperature dependence of the stability of compounds. This analysis is usually used to evaluate the ease of reduction of metal oxides and sulfides.

Features of Ellingham diagram: (a) The graph for the formation of a metal oxide is a straight line with an upward slope. (b) There is a sudden change in the slopes for some metal oxides, such as MgO, ZnO and HgO

The main application of Ellingham diagrams is in the extractive metallurgy industry, where it helps to select the best reducing agent for various ores in the extraction process, purification and grade setting for steel manufacturing. It also helps to guide the purification of metals, especially the removal of trace elements. The direct reduction process for making iron rests firmly on the guidance of Ellingham diagrams, which show that hydrogen can alone reduce iron oxides to the metal.

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