Extraction and processing of high-quality sands and gravels with high quartz content at the Laußnitz/Ottendorf-Okrilla open-cast mine
Kieswerk Ottendorf-Okrilla GmbH & Co. KG
Laußnitz (gravel plant, open-cast mine, administration) · Erdstoffkippe Laußnitz landfillNew on Amplifa
About KBO
Kieswerk Ottendorf-Okrilla GmbH & Co. KG (KBO) has been extracting and processing sand and gravel from open-cast mining in the Laußnitzer Heide on an industrial scale since 1949. Today, the company ranks among the largest gravel plants in Germany. The "Ottendorf" raw material is characterised by a high quartz content and the absence of sulphate harmful to concrete. The processing plant at the open-cast mine has been in operation since 1993 and has a processing capacity of over 500 t/h. As bulk materials from its own facilities, the company offers gravel, sand and anti-icing grit – primarily for regional ready-mixed concrete plants and structural and civil engineering companies, but also for road construction, landscaping and private customers. Delivery is made loose by truck (up to 27 t) or by rail on request. Through its subsidiary Transportbeton Ottendorf-Okrilla GmbH (TBO), KBO produces ready-mixed concrete. At its own earth-material landfill, the company accepts backfill materials such as soil and stones, concrete, bricks, tiles and ceramics. The company is reclaiming and rehabilitating the over 250 ha open-cast mine in a variety of ways. Since 2022, a roughly 2,700 m long conveyor system has transported around 4,000 t of gravel daily from the Würschnitz open-cast mine to Laußnitz for processing, avoiding around 300 truck journeys per day. Around 150 people work at the site; in the adjacent Laußnitzer Heide industrial and business park, downstream processors such as
- Site
- Laußnitz
- Processes
- Extraction and processing of sand and gravel (sand-gravel open-cast mining), Processing plant for high-quality sand and gravel products, Delivery of bulk materials: gravel, sand, anti-icing grit (loose by truck: 3-axle 15 t; 4-axle 19 t;, Applications of the aggregates: aggregates for concrete and mortar, road construction materials,, Production of ready-mixed concrete (via subsidiary Transportbeton Ottendorf-Okrilla GmbH), Acceptance of backfill materials at the earth-material landfill (soil and stones, concrete, bricks,, Transport of gravels and sands via conveyor system from the Würschnitz open-cast mine to processing, Reclamation and rehabilitation of the open-cast mine (over 250 ha) through backfilling with
- Materials
- Quartz sand / gravel with high quartz content, Gravel, Sand, Anti-icing grit, Granodiorite, Greywacke, Gneisses, Syenite
- Certificates
- Acceptance checks at the earth-material landfill (weighing/tipping point)
- Founded
- 1949
- Employees
- 150
- Industries
- Ready-mixed concrete plants, Structural construction, Civil engineering, Road construction, Garden and landscape construction, Private customers/smallest orders
- 01
Extraction at the Würschnitz/Wachberg sand-gravel open-cast mine
- 02
Transport via conveyor system (approx. 2,700 m route)
- 03
Processing of gravels and sands (over 500 t/h)
- 04
Production of ready-mixed concrete (subsidiary TBO)
- 05
Distribution by truck or rail
- 06
Acceptance and recycling of backfill materials
- 07
Reclamation of the open-cast mine
Raw materials and bulk goods
Gravel
Main product with high quartz content, e.g. as aggregate for concrete and mortar.
Quartz sand
High-quality sand free of sulphate harmful to concrete, also as feedstock for special sands.
Anti-icing grit
Bulk material for winter services and the construction materials sector.
Ready-mixed concrete
Produced by the subsidiary Transportbeton Ottendorf-Okrilla GmbH (TBO).
Soil and stones
Accepted uncontaminated excavated soil for backfilling and recultivation.
Concrete
Accepted concrete rubble for recycling at the earth-material landfill.
Bricks
Accepted brick residues for recycling at the earth-material landfill.
Tiles / ceramics
Accepted tile and ceramic waste for recycling at the earth-material landfill.
Sites
Laußnitz
DEGravel plant, open-cast mine, administration
- Part weight / size
- Delivery loose by truck (3-axle 15 t, 4-axle 19 t,
- Lot size
- Smallest orders to large quantities
- Materials
- Gravel, sand, anti-icing grit, ready-mixed concrete
- Gravel processing plant (over 500 t/h, in operation since 1993)
- Ready-mixed concrete plant
- Würschnitz–Laußnitz conveyor system (3 conveyors, 2,700 m route, approx. 4,000 t/day)
- Wheel loader
Erdstoffkippe Laußnitz landfill
DEAcceptance of backfill materials
- Part weight / size
- Delivery loose by truck
- Lot size
- Smallest orders to large quantities
- Materials
- Soil and stones, concrete, bricks, tiles/ceramics
- Checks during weighing and at the tipping point
Products and bulk goods
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Extraction and processing of sand and gravel (sand-gravel open-cast mining)Other (raw material extraction/processing) | – | – | – | – | Quartz sand, Gravel, Sand-gravel |
| Processing plant for high-quality sand and gravel productsOther (raw material extraction/processing) | – | – | – | – | Gravel, Sand |
| Delivery of bulk materials: gravel, sand, anti-icing grit (loose by truck: 3-axle 15 t; 4-axle 19 t;Other (raw material extraction/processing) | – | – | 15 t (3-axle) – 27 t (semi-trailer/train) | Smallest orders of any kind | Gravel, Sand, Anti-icing grit |
| Applications of the aggregates: aggregates for concrete and mortar, road construction materials,Other (raw material extraction/processing) | – | – | – | – | Aggregates for concrete, Aggregates for mortar, Aggregates for unbonded and hydraulically bound |
| Production of ready-mixed concrete (via subsidiary Transportbeton Ottendorf-Okrilla GmbH)Other (construction material production) | – | – | – | – | Concrete, Gravel, Sand |
| Acceptance of backfill materials at the earth-material landfill (soil and stones, concrete, bricks,Other (recycling/landfill) | – | – | – | – | Soil and stones, Concrete, Bricks, Tiles, Ceramics |
| Transport of gravels and sands via conveyor system from the Würschnitz open-cast mine to processingOther (material transport) | – | – | 4,000 t/day | – | Gravel, Sand |
| Reclamation and rehabilitation of the open-cast mine (over 250 ha) through backfilling withOther (reclamation) | – | – | – | – | uncontaminated soil materials |
4 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Gravel processing plant | – | 1 | Processing capacity over 500 t/h | 1993 | Laußnitz (open-cast mine site) |
| Ready-mixed concrete plant | – | 1 | – | – | Laußnitz (site of the new gravel plant) |
| Conveyor system (belt conveyors) | – | 3 belt con | Route 2,700 m long, approx. 10 m wide, approx. 4,000 t/day | 2022 (Fert | Link between Würschnitz open-cast mine – processing plant Laußnitz I |
| Wheel loader | – | 1-2 | – | – | Würschnitz open-cast mine |
Additional services
Reference customers
Quality
Processing takes place on a plant proven since 1993, delivering high product quality and a wide range of applications. The materials accepted at the earth-material landfill are checked during weighing and at the tipping point; acceptance is carried out in accordance with the permit notice and parameter list of the Saxon Higher Mining Authority.
| Evidence | Laußnitz |
|---|---|
| Acceptance checks at the earth-material landfill (weighing/tipping point) |
History
- 1920er
Peat extraction by entrepreneur Karl Leonhardt in Ottendorf-Okrilla
- 1946
Gravel pits on the Wachberg placed under the Dresden district administration; expropriation of the Heideköhlerei Max Findeisen
- 1949
Start of industrial gravel extraction by Kieswerk Ottendorf-Okrilla GmbH & Co. KG
- 1950
New loading ramp at Ottendorf-Okrilla Süd station with a narrow-gauge railway to the Wachberg open-cast mine
- 1957
Opening up of the Laußnitz open-cast mine
- 1958-1960
Construction of the new gravel plant on Königsbrücker Straße (B 97)
- 1961
Processing in three shifts
- 1962
Over one million tonnes of sand and gravel products sold
- 1993
Commissioning of the new gravel plant at the open-cast mine with processing capacity over 500 t/h; construction of the ready-mixed concrete plant
- 2020
Biodiversity study by Oliver Fox (UVMB); preliminary work on the Würschnitz conveyor system
- 2022
German Sustainability Award 2022 (category Ecology I, MIRO); completion of the Würschnitz-Laußnitz conveyor system (approx. 4,000 t/day, 2,700 m route)