Minor Metals

Our minor metals are formed in the smelting phase of the copper production process. Measured against the proportion of copper, they are only found in the Earth's crust in small amounts. Aurubis' minor metals include tellurium metal, tellurium dioxide, selenium, and lead-bismuth and lead-antimony alloys.

Tellurium metal

Tellurium metal is used in thermoelectric consumer appliances, solar modules, and in steel and non-ferrous metal production.

Tellurium dioxide

Tellurium dioxide is used to fabricate fiber optics and pigments and to color ceramics and glass.

Lead-bismuth alloy

Lead-bismuth alloy is used for low-melting alloys and is also melted down into its individual elements.

Lead-antimony litharge

Lead-antimony litharge is applied in flame retardants on circuit boards and is used in the fireworks, paint, and catalyst industries.


Selenium is a natural component of copper concentrates and arises during the treatment of anode slimes. It is used in the glass and animal fodder industry.


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