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Foundry

In the foundry very pure copper scrap (production waste from further processing companies) like copper cathodes for example, is smelted down in a gas-fired blast furnace or in electric furnaces.
 
In the vertical strand casting process billets with a diameter of 150 to 500 mm (or cakes) are cast of up to 8 m in length. The quality of the copper which is cast is set according to the specifications of the client by the addition of oxygen, phosphorous, silver or tin.