Difference Between Carbothermic and Metallothermic Reduction

The key difference between carbothermic and metallothermic reduction is that in carbothermic reduction, the reducing agent is carbon, whereas, in metallothermic reduction, the reducing agent is a metal. Carbothermic reduction and metallothermic reduction are very important reactions in obtaining pure metal.

1. What is Metallothermic reduction?
2. What is carbon reduction process?
3. Which metal Cannot be extracted by carbon reduction?
4. What is self reduction process?
5. Can copper be reduced by carbon?
6. Which metals can be extracted by reduction?
7. Which metal is hardest to extract from its ore?
8. What is self reduction reaction with example?
9. How many of these gives metal by self reduction?
10. Does ZNS undergo self reduction?

What is Metallothermic reduction?

Metallothermic reduction is a general term for reduction reactions conducted to obtain a target metal or compound from feed material such as oxides or chlorides (halides) by using a metal as a reducing agent. Many reactive metals such as Ti, tantalum (Ta), and REMs are produced by metallothermic reduction.

What is carbon reduction process?

Carbothermic reactions involve the reduction of substances, often metal oxides ( ), using carbon as the reducing agent. These chemical reactions are usually conducted at temperatures of several hundred degrees Celsius. Such processes are applied for production of the elemental forms of many elements.

Which metal Cannot be extracted by carbon reduction?

Carbon is a reducing agent at higher temperatures and from the electrochemical potential point of view or reactivity series carbon is present above many important metals e.g. zinc,iron,copper,silver,gold so it is used to reduce their oxides to extract metals from them but Carbon is present below Potassium so it is not ...

What is self reduction process?

In self reduction, the sulphide ores of less electropositive metals are heated in air so as to convert a part of the ore into oxide or sulphate which then reacts with the remaining part of the sulphide ore in absence of air to give the metal and sulphur dioxide.

Can copper be reduced by carbon?

Carbon reacts with oxygen to form carbon dioxide, and hydrogen reacts to form water. ... Carbon is used to obtain pure iron in the blast furnace and hydrogen can be used to reduce copper ores like copper oxide and copper carbonate.

Which metals can be extracted by reduction?

Metals less reactive than carbon can be extracted from their ores by reduction. Copper, silver, gold and platinum can occur as native metals and do not need to be extracted. Sometimes copper needs to be extracted from an ore. Metals are often found combined with oxygen as oxides.

Which metal is hardest to extract from its ore?

The Blast Furnace

Both iron and copper can be extracted from the ore by heating with carbon. However, iron is a more reactive metal than copper. It is therefore a little harder to extract it from its ore.

What is self reduction reaction with example?

Self-Reduction Process. The cations of the less electropositive metals like Pb, Hg, Sb and Cu may be reduced without the use of any additional reducing agent. ... For example, in the extraction of mercury, the sulphide ore (cinnabar) is heated in a current of air when the following reactions take place.

How many of these gives metal by self reduction?

Metals that are less electropositive can be obtained by the self-reduction process and these metals are mercury, copper, and lead.

Does ZNS undergo self reduction?

Zinc sulphide is note reduced by self reduction/autoreduction process because self reduction process is used for the sulphide ores of less electropositive elements like Hg, Pb, and Cu that are heated in air as to convert part of the ore into oxide or sulphate which then reacts with the remaining sulphide ore to give ...