Iron Smelting Technology

Learn about Rwanda's traditional smelting technology, its rituals, and materials it produced.

Furnace fragmentOriginal Source: Rwanda Cultural Heritage Academy

Iron smelting, a cultural pillar of Rwandan Kingdom

Over past centuries, the iron smelting technology shaped a new mode of life economically and politically. It later became “a cultural pillar” of the Rwandan kingdom.

 During colonial period and due to the widespread of scrap iron, this technology gradually became obsolete. 

TuyereRwanda Cultural Heritage Academy

The key stages during iron smelting:

-Charcoal production for burning ore

-Manufacturing of the tuyeres to allow a blast of air be delivered into the interior of a smelting furnace

-Bellows preparation as the main air supplies
ore collection and preparation


-Construction of the furnace, and smelting.

Sample of smashed iron oreRwanda Cultural Heritage Academy

Iron ore

Iron ore was the raw material from which iron was extracted and also used for manufacturing metals in precolonial Rwanda. To ensure a successful smelt and good quality metals, the smelters mined ore from different sources, mixed them and pounded them. 

BellowsRwanda Cultural Heritage Academy

Bellows

They are the main air-supply devices in ironworking activities. The most known are wooden bellows, but clay bellows were also used in Rwanda. Wooden bellows have double pots covered with a sheep skin. To ensure flexibility, they are greased with cow butter a day before use.

FurnaceRwanda Cultural Heritage Academy

Smelting

The smelting was an operation that took place for six to seven hours. To ensure a constant air supply, there is always a team of smelters waiting to take over from their fellows during their break time. 

Smelting process by Rwanda MuseumsRwanda Cultural Heritage Academy

Related Rituals

The process of iron smelting was deeply interwoven with rituals, and all operations were conducted in secluded areas. Certain practices were strictly forbidden, while others were deemed essential for the success of the entire endeavor.

The master-smelter was not allowed to have intercourse the night before the smelting activities, and wouldn't have been able to lead the process  during his wife’s menstrual days since the whole process could result into a failure.

BloomOriginal Source: Rwanda Cultural Heritage Academy

The bloom

At the end of operations, the result of a successful iron smelting would produce an iron bloom which the blacksmiths take into the hearth for purification and eventual iron tool for forging different metals. Some examples are spears, arrows, hoes, knives, swords, and axes.

Traditional hoe bladeOriginal Source: Rwanda Cultural Heritage Academy

Hoe

This iron tool, was and still a key item of material culture in Rwanda. Its primary function was in Agriculture to cultivate the soil but it had some other economic and social function. It was used in barter trade as a bargaining counter and in matrimonial negotiations.

Spear blade (3)Original Source: Rwanda Cultural Heritage Academy

Spear blade

Apart from serving as a weapon, the spears also had a religious and ceremonial significance.

Bell - umudende by RUSANGIZA DamienOriginal Source: Rwanda Cultural Heritage Academy

The bell "Umudende"

Umudende, a symbol of bravery and prosperity, was a special award given to warriors who had killed seven enemies in battle, dogs that had killed seven animals in a hunt, or mothers who had given birth to seven children without a miscarriage.

Smithy hammer (1)Original Source: Rwanda Cultural Heritage Academy

Objects for the royal courtyard

Spears, hoes and hammers were part of the dynastic rituals which were the symbol of the monarchy. Dynastic hammer was a sign of power and was also considered as the Imana (God), for the most powerful soverign. They were part of the furnishings of the funeral ceremonies.

Ax (2)Original Source: Rwanda Cultural Heritage Academy

Rwamukire; an axe for justice

A tool that typically would have been suspended over the entrance of an enclosure for royal audiences.

Sword (3)Original Source: Rwanda Cultural Heritage Academy

Sword and its sheath

With a long metallic blade and wooden handle, the sword and sheath was used as a weapon.

intagaraOriginal Source: Rwanda Cultural Heritage Academy

A set of spears "Intagara"

It was used for decorative purposes especially at the royal court. 
Spears with different shapes were offered to the King at his enthronement as well as spears that belonged to warriors who distinguished themselves by their exploits and spears brought back from battles as trophies.

Credits: Story

Content development: Andre Ntagwabira
Curatorial layout: Chantal Umuhoza

Credits: All media
The story featured may in some cases have been created by an independent third party and may not always represent the views of the institutions, listed below, who have supplied the content.
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