What is aluminothermy and why it has to be done?
Definition of Aluminothermy : a process of producing great heat and strong chemical reduction by oxidizing finely divided aluminium with oxygen taken from another metal, this metal being thus reduced from its oxide (as molten iron is obtained from iron oxide in welding by the Thermit process).
a process for reducing mettallur oxides using finely divided aluminum powder. The mixture of aluminium and the oxide is ignited, causing the aluminium to be oxidized and the metal oxide to be reduced to the metal.
Aluminothermic reactions are exothermic chemical reactions using aluminium as the reducing agent at high temperature. The process is industrially useful for production of alloys of iron. The most prominent example is the thermite reaction between aluminium and iron oxides: Fe2O3 + 2 Al → 2 Fe + Al2O3 This reaction is however not relevant to the most important application of aluminothermic reactions, the production of ferroalloys. For the production of iron, a cheaper reducing agent, coke, is used instead via the carbothermic reaction.
: a process of producing great heat and strong chemical reduction by oxidizing finely divided aluminium with oxygen taken from another metal, this metal being thus reduced from its oxide (as molten iron is obtained from iron oxide in welding by the Thermit process).
a process for reducing mettallur oxides using finely divided aluminum powder. The mixture of aluminium and the oxide is ignited, causing the aluminium to be oxidized and the metal oxide to be reduced to the metal.
Aluminothermic reactions are exothermic chemical reactions using aluminium as the reducing agent at high temperature. The process is industrially useful for production of alloys of iron. The most prominent example is the thermite reaction between aluminium and iron oxides: Fe2O3 + 2 Al → 2 Fe + Al2O3 This reaction is however not relevant to the most important application of aluminothermic reactions, the production of ferroalloys. For the production of iron, a cheaper reducing agent, coke, is used instead via the carbothermic reaction.
