C. Wilhelm Kayser, Ahlemeyer & Co

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The C. Wilhelm Kayser, Ahlemeyer & Co. was a German company in Berlin-Moabit , founded as a metal smelter for smelting of gold, silver and lead residues of C. Wilhelm Kayser. 1861 It was founded in 1911 under the company Hüttenwerke C. Wilh. Kayser & Co. converted into a stock corporation.

history

Share over 1000 marks of the Hüttenwerke C. Wilh. Kayer & Co. AG from May 1912

In 1906 a copper, lead and tin smelter was built in Oranienburg as a branch . A specialization in the production of copper from copper-containing secondary raw materials led to the construction of another iron and steel works in Lünen in Westphalia in 1913 , which went into operation in 1916. 1929 merged the company with the smelter Niederschoeneweide AG to smelters C. W. Kayser & Co. - Niederschoeneweide AG and formed one of the leading companies in the smelting of copper-containing waste material. In 1941/1942 the Lübeck trading company L. Possehl & Co. took over the majority of the shares.

After the war, due to the expropriation of the Oranienburg and Niederschöneweide plants and an aluminum smelter in Schönebeck (Elbe), only the location in Lünen ( 51 ° 36 ′ 24.1 ″  N , 7 ° 30 ′ 21 ″  E ) remained. In 1955 the company's headquarters were relocated to Lünen, the smelter was modernized and expanded to become the largest copper recycling smelter in Europe. The electrolytically produced copper cathodes produced by the company now trading as Hüttenwerke Kayser AG are more than 99.9% pure . In 1999, a production volume of 180,000 t of electrolytic copper cathodes per year was achieved for the first time , which corresponds to a share of the German production of refined copper of more than 25%.

On January 1, 2000, the Norddeutsche Affinerie took over the share package from L. Possehl & Co., which received 10% of the shares in the Norddeutsche Affinerie. Until the beginning of 2004, the remaining minority shareholders were also excluded by means of a squeeze-out . The Norddeutsche Affinerie now operates as Aurubis .

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