The thermite process

VC5.1.2.2

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Description

Experiment C5.1.2.2 demonstrates the principle of the thermite process. In engineering, the thermite process is used to weld railway tracks together. A mixture of aluminium grit and iron(II, III) oxide is added to the apparatus and lit with an ignition rod. Liquid iron and aluminium oxide form in a very exothermic reaction. The iron has a higher density than aluminium oxide and so it sinks down in the melt.

Because aluminium releases immense quantities of energy in the reaction with oxygen, the reaction needs only to be started with an igniter. The energy released drives the rest of the process, and along with that it also liquefies the resulting iron.

Components of equipment sets

1	661540 8	Thermite experiment This product contains dangerous substances!
1	6750440 4	Thermite igniting sticks Warning H302 H332
1	666714 8	Cartridge burner, DIN type Warning H220
1	666731 4	Gas igniter, mechanical
1	667035	Crucible tongs 200 mm
1	604222 4	Measuring scoop, PP, 50 ml
1	51015 4	Magnet with bore
1	667104 8	* Cover plate, 50 cm x 50 cm
1	667614 4	* Heat protective gloves

Articles marked with * are not essential, we do however recommend them to carry out the experiment.

Experiment Instructions

PDF (Experiment description)

C5.1.2.2 The thermite process

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The thermite process

Description

Components of equipment sets

Experiment Instructions

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