RECYCLIN
Id. Nr.: 021030
Separation of different materials
Frame, bearing housing, covers and fan
These parts are made of structural steel, which can be recycled according to local instructions.
All the auxiliary equipment, cabling as well as bearings have to be removed before melting the
material.
Components with electrical insulation
The stator and the rotor are the main components, which include electrical insulation materials.
There are, however, auxiliary components which are constructed of similar materials and which are
hence dealt with in the same manner. This includes various insulators used in the terminal box,
exciter, voltage and current transformers, power cables, instrumentation wires, surge arrestors and
capacitors. Some of these components are used only in synchronous machines and some are
used only in a very limited number of machines.
All these components are in an inert stage once the manufacturing of the machine has been
completed. Some components, in particular the stator and the rotor, contain a considerable amount
of copper which can be separated in a proper heat treatment process, where the organic binder
materials of the electrical insulation are gasified. To ensure a proper burning of then fumes, the
oven shall include a suitable after burning unit. The following conditions are recommended for the
heat treatment and for the after burning to minimize the emissions from the process:
Heat treatment
Temperature: 380-420°C (716...788°F)
Duration: After obtaining 90% of the target temperature, the object shall stay a minimum of five
hours at his temperature.
After burning of the binder fumes
Temperature: 850-920°C (1562-1688°F).
Flow rate: The binder fumes shall stay a minimum of three seconds in the burning chamber
NOTE: The emission consists mainly of O2-, CO-, CO2-, NOx-, CxHy-gases and microscopic
particles. It is on the user's responsibility to ensure that the process complies with the local
legislation.
NOTE: The heat treatment process and the maintenance of the heat treatment equipment require
special care in order to avoid any risk for fire hazards or explosions. Due to various installations
used for the purpose it is not possible for Bartec Varnost to give detailed instructions of the heat
treatment process, or the maintenance of the heat treatment equipment and these aspects must be
taken care of by the customer.
Hazardous waste
The oil from the lubrication system is a hazardous waste and has to be handled according to local
instructions.,
Land fill waste
All insulation material can be handled as a land fill waste.
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