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From A for air separators to W for wood chips, our glossary has short and precise explanations for specific terms. However, no glossary can claim to be complete, not even ours. That’s why we are constantly expanding the list – so if you want to look up industry-typical terms quickly and easily, feel free to take a look.

Domestic and commercial waste

Domestic waste is a mixture of waste that is usually put into bins or bags and collected by the public or privately organised waste collection services. In Germany, domestic waste is defined as “solid waste from private households that is collected and emptied by the waste management authorities themselves or by third parties commissioned by them in standardised emptying containers prescribed in the disposal area.” Commercial waste is waste from crafts, service industries, trade and public institutions. It is similar to domestic waste in terms of its nature or composition.

Light and heavy fractions

Shredding produces light and heavy fractions. Both of these require a coordinated process technology in order to obtain the recyclable materials they contain. An air separator separates the material flow into these two fractions. During the process, the light substances are transported into the expansion chamber by means of air flow. In the chamber, the air velocity is reduced to such an extent that the light substances end up on a discharge belt. Among other items, stones, non-ferrous parts and larger pieces of wood are separated by the heavy fraction. The heavy materials fall downwards onto a discharge belt in front of the rotary drum in the air separator.