Extraction, processing and delivery of washed sand, gravel and chippings for construction in the Allgäu region.
Hans Hebel Kieswerk Darast GmbH & Co. KG
Wolfertschwenden/DarastNew on Amplifa
About the gravel plant
Hans Hebel Kieswerk Darast GmbH & Co. KG operates a gravel plant in Wolfertschwenden/Darast and has supplied the regional construction industry for around 55 years. Low-terrace gravel composed of carbonate, dolomite, quartz and sandstone is extracted, its origin tracing back to glacial processes from the pre-Alpine region. The raw material is extracted with wheel loaders and fed to the plant via a conveyor line, where it is washed and screened into grain sizes from 0–1 mm to 0–56 mm according to the classifications of the delivery list. Daily production is 3,000 to 4,000 tonnes. The product range includes natural sand and gravel to DIN EN 12620, premium crushed sand and premium chippings to DIN EN 13043, as well as concrete gravel, screed sand, frost-protection gravel, subbase gravel, cable sand, drip-layer material and hydraulic engineering stones. Products go to road construction, structural construction, landscaping and private construction projects and are delivered to the point of use with transport vehicles. The site is located directly on the A7 Ulm–Kempten motorway.
- Site
- Wolfertschwenden
- Processes
- Gravel extraction (mining of mineral raw materials), Washing of the raw material, Classification/screening (delivery grain sizes according to classifications), Crushing (premium crushed sand, crushed subbase gravel), Transport and delivery to the point of use (logistics), Delivery to the point of use with transport vehicles, Consulting, Annual independent inspection and certification of the products
- Materials
- Natural sand, washed, Gravel, washed, Premium crushed sand, Premium chippings, washed, Chippings, Concrete gravel, Screed sand, Wall gravel/frost-protection gravel
- Certificates
- ISO 50001:2018, ISO 50001, Quality monitoring Sand, Kies, Splitt Bayern / Aalen Building Materials Testing
- Industries
- Road construction, Structural construction, Landscaping and garden construction, Hydraulic engineering, regional construction industry
- 01
Extraction of the raw material with wheel loaders
- 02
Feed via conveyor line
- 03
Washing (up to 80 % recycled water)
- 04
Classification/screening by grain sizes
- 05
Stockpiling on heaps
- 06
Transport and delivery to the point of use
Site
Gravel plant Wolfertschwenden/Darast
DEExtraction, production and distribution
- Lot size
- 3,000–4,000 t/day
- Materials
- Sand, gravel, chippings, crushed stone
- Wheel loader
- Conveyor line
- Conveyor belts
Products
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Gravel extraction (mining of mineral raw materials)Other | – | – | – | 3,000–4,000 tonnes/day | Gravel, Sand, Crushed stone |
| Washing of the raw materialOther | – | – | – | – | Gravel, Sand, Premium chippings |
| Classification/screening (delivery grain sizes according to classifications)Other | – | – | – | – | Natural sand, Gravel, Premium chippings, Premium crushed sand, Concrete gravel, Screed sand, Frost-protection gravel, Subbase gravel, Cable sand, Sand-chip mix |
| Crushing (premium crushed sand, crushed subbase gravel)Other | – | – | – | – | Premium crushed sand, Crushed subbase gravel |
| Transport and delivery to the point of use (logistics)Other | – | – | – | – | Gravel, Sand, Chippings |
3 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Wheel loader | – | – | – | – | Gravel plant Wolfertschwenden/Darast |
| Conveyor line | – | – | – | – | Gravel plant Wolfertschwenden/Darast |
| Conveyor belts | – | – | – | – | Gravel plant Wolfertschwenden/Darast |
Additional services
Quality monitoring and certificates
The operation is inspected and certified annually by independent institutes. The aggregates to DIN EN 12620 and DIN EN 13043 are subject to quality monitoring by the Monitoring and Certification Association Sand, Kies, Splitt Bayern e. V. and the Aalen Building Materials Testing Institute respectively.
| Evidence | Gravel plant Wolfertschwenden/Darast |
|---|---|
| ISO 50001 | |
| Quality monitoring Sand, Kies, Splitt Bayern / Aalen Building Materials Testing |
History
- 1970 (ca.)
Start of deliveries to the regional construction industry – the plant has been supplying the construction industry for around 55 years.
- 2015
The gravel plant's energy requirement is covered 60 % by renewable electricity from its own ground-mounted photovoltaic system.