Process-oriented material flow analysis in the metal-recycling / electrochemical de-tinning sector at the Knippers Metall-Chemie O.H. company

In an ISO 9001:2000 certified plant, where de-tinned steel packages made of tin plate scrap are manufactured, the amount of waste in the de-tinning process has been reduced by 70 t/a by the installation of an oil skimmer. Via the reactivation of a computer controlled radio spectrometer, a considerable cost reduction of up to 75,000 kWh of electrical energy per year has been achieved. This measure required €6,500, a relatively cost effective investment. The amortisation period was each less than 12 months.


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Source: Efficiency Agency for North Rhine-Westphalia (EFA NRW)