Expanded clay (expanded clay production)

Emissions generated by the activity within the product supply chain as described in ecoinvent v3.10. The product "expanded clay" represents clay expanded by heat. Its production includes mined clay being mixed with water ground sometimes granulated and burned at reverse flow in a rotary furnace at 1200 °C. The included organic materials burn and the clay pellets expand with the help of heavy fuel oil. The surface melts and produces a sintered shell. Expanded at 1200 °C in a rotary furnace. Heavy fuel oil is used for heating. Bulk density of expanded clay: 260 - 500kg/m3. Expanded clay is mainly used as a lightweight aggregate for lightweight concrete blocks and thermal plaster. It is also used as sound and thermal bulk insulation. The cut-off classification is allocatable product. The activity type is ordinary transforming activity. The reference product amount is 1.