Process information
| Key Data Set Information | |
| Location | DE |
| Geographical representativeness description | The data set represents the country specific situation in Germany, focusing on the main technologies, the region specific characteristics and / or import statistics. |
| Reference year | 2022 |
| Name |
Base name
; Quantitative product or process properties
Anhydrite (CaSO4); grinded and purified product
|
| Use advice for data set | The data set represents a cradle to gate inventory. It can be used to characterise the supply chain situation of the respective commodity in a representative manner. Combination with individual unit processes using this commodity enables the generation of user-specific (product) LCAs. |
| Technical purpose of product or process | This product can be used in construction. |
| Classification number | 1.1.03 |
| Classification |
Class name
:
Hierarchy level
|
| General comment on data set | This data set has been modeled according to the European Standard EN 15804+A2 for Sustainable Building. Results are depicted in modules that allow the structured expression of results over the entire life cycle. |
| Uncertainty margins | 20 |
| Description | Product system depicted except for a few missing processes / flows. Technological, temporal and geographic representativeness partly given. |
| Copyright | Yes |
| Owner of data set | |
| Quantitative reference | |
| Reference flow(s) | |
| Time representativeness | |
| Data set valid until | 2024 |
| Time representativeness description | Annual average |
| Technological representativeness | |
| Technology description including background system | The composition of the anhydrite mix is one third each natural anhydrite from open cast and underground mining, thermal anhydrite and anhydrite produced as a by-product in the hydrofluoric acid synthesis. Thermal anhydrite is produced by the calcination of calcium sulphate dihydrate (two molecules of chemically bind water per molecule of calcium sulphate to anhydrous form of calcium sulphate). The calcium sulphate dihydrate used for the calcination process is generated during flue gas desulphurisation in hard coal power plants. One third of the calcium sulphate dihydrate from power plants is transported over longer distances via train. To assess the impacts of the production of calcium sulphate dihydrate from power plants the real electricity consumption for the dehydration and purification of the gypsum slurry is considered. The anhydrite from the hydrofluoric acid synthesis is assessed via an allocation using actual market values. |
| Flow diagram(s) or picture(s) | |
Modelling and validation
Administrative information
Environmental indicators