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 | 2023 |
| Name |
Base name
; Quantitative product or process properties
Pumice gravel; grain size 4/16
|
| 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 | 1.2.03 |
| 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 | 10 |
| Description | Product system almost completely covered. Good technological, temporal and geographic representativeness. |
| Copyright | Yes |
| Owner of data set | |
| Quantitative reference | |
| Reference flow(s) | |
| Time representativeness | |
| Data set valid until | 2026 |
| Time representativeness description | Annual average |
| Technological representativeness | |
| Technology description including background system | The loose, gravelly pumice stone is extracted from an open cast mine. Following the degradation, a processing machine subdivides the raw pumice into different mineral size classes. Firstly, the machine disposes of all metallic matter using a magnet. Then a primary sieve separates the raw pumice into two groups and each group has its own processing sequence. The grains larger than 2 mm are fed into a sieve jigger in which the raw pumice is separated into two quality grades on an impulse-driven water bed. The lighter, floating high-grade pumice is separated in a complex, 3-step process in which the light as well as the heavier parts with poor insulating properties are removed. In a separate processing of the fine material (= 2 mm), the pumice with a high purity level in this fraction can be separated from the heavier sand. The water required for this process is sent to its own reservoir where it is clarified and recirculated. Foreign bodies from the separation processes such as grit and sand can be used in road-building or can be used as abrasives. |
| Flow diagram(s) or picture(s) | |
Modelling and validation
Administrative information
Environmental indicators