Lime (zinc mine operation)

Emissions generated by the activity within the product supply chain as described in ecoinvent v3.10. The product "lime" represents 1 kg of quicklime. Quicklime: Approximately 1.8 t of limestone is required per 1.0 t of quicklime. Agriculture: Many crops grow best under neutral to slightly acid conditions (i.e. pH between 6 and 7). Thus soils which are more acidic than pH 6 generally benefit from the application of lime. Metal refining: When limestone is used in metal refining it is initially converted to quicklime which reacts with acidic oxides (e.g. SiO2 Al2O and Fe2O3) to produce molten slag. Flue gas desulphurisation: A growing use of lime is in the treatment of flue gas from combustion processes to remove sulphur dioxide. The cut-off classification is allocatable product. The activity type is ordinary transforming activity. The reference product amount is 1.