Manufacturer and distributor of customised industrial raw materials: minerals, chemicals, metal and alloy powders with processing services
Mineralmühle Leun, Rau GmbH & Co. KG
35638 Leun · 35745 Herborn / AmdorfNew on Amplifa
Specialty raw materials since 1880
Mineralmühle Leun, Rau GmbH & Co. KG, based in Leun (Hesse), was founded in 1880 and is a European supplier of specialty raw materials for industry. As a manufacturer and distributor, the company delivers natural minerals, synthetic melted and sintered products, chemical raw materials as well as metal and alloy powders worldwide. Its core competence lies in the sourcing, processing and supply of customised minerals, chemicals and alloys. In addition, the company offers processing services ranging from size reduction (crushing, milling) to mixing, drying, screening, dedusting, magnetic separation and optical sorting through to packaging. Its customers include above all industries such as welding technology, refractories, brake and friction linings, abrasives, steelworks and foundries, construction and ceramics. The corporate group also includes Kovohuty Dolny Kubin s.r.o., a producer of ferrosilicon and potassium titanate. Alongside its headquarters in Leun, the company operates a plant in Herborn/Amdorf.
- Site
- Leun
- Processes
- Crushing, Mixing, Milling, Drying, Screening, Dedusting, Packaging, Magnetic separation
- Materials
- Kovosil – Ferrosilicon FeSi 45, Fusil – Fused Silica, Malox – Aluminium oxide (calcined, corundum, tabular, light alumina), Titan8 – Titanates (K, K-Mg, Na, Ca, Li), Zirconium oxide, Kovosil® – Ferrosilicon FeSi 45, Fusil® – Fused Silica, Malox® – Aluminium oxide (calcined, corundum, tabular, light alumina)
- Certificates
- ISO 9001, ISO 14001, ISO 45001 (DIN ISO 45001)
- Founded
- 1880
- Industries
- Welding technology, Refractories, Brake and friction linings, Abrasives, Steelworks and foundries, Construction
- 01
- 02
Crushing / Milling
- 03
Drying
- 04
Mixing and homogenising
- 05
Screening / Dedusting / Magnetic separation / Optical sorting
- 06
Packaging in small and large containers
- 07
Delivery worldwide
Raw materials and processing methods
Kovosil® – Ferrosilicon FeSi 45
Metal and alloy powders, among other things for welding technology.
Alloy powders for powder metallurgy and welding applications.
Metal and alloy powders in various grain sizes.
Fusil® – Fused Silica
Used in refractory filters and mould parts for the aluminium industry.
Malox® – Aluminium oxide (calcined, corundum, tabular, light alumina)
Refractory raw material for foundry and refractory applications.
Titan8® – Titanates (K, K-Mg, Na, Ca, Li)
Titanates among other things for friction linings and welding applications.
Basic raw materials for ceramics, foundries, construction and refractories.
Refractory raw materials for shaped and unshaped products.
Binders and additives for welding technology, foundries and ceramics.
Sites
Leun
DEHeadquarters / plant
- Materials
- Minerals, chemicals, metal and alloy powders
- Cone, jaw and vertical crushers (Mohs hardness up to 8, input size up to 200 mm)
- Hammer, impact and ball mills (input size up to 60 mm)
- Intensive, plough-share and double-cone mixers (up to 15 components, grain size up to 10 mm)
- Rotary drum dryers (grain range 1–10 mm)
- Vibration, tangular and tumbling screening machines (0.045–10 mm, with/without ultrasound)
- Classifiers for dedusting (0.5–6 mm)
- Magnetic separation systems (0.5–10 mm)
- Optical sorting systems (0.5–6 mm)
- Packaging machines for bags, big bags and drums
Herborn / Amdorf
DEAmdorf plant
- Materials
- Minerals, chemicals, alloys
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| CrushingSize reduction/Processing | – | Input size up to 200 mm | – | – | Minerals, Secondary raw materials |
| MixingProcessing | – | Grain size up to 10 mm | – | – | Minerals, Chemicals, Alloys |
| MillingSize reduction/Processing | – | Input size up to 60 mm | – | – | Minerals, Alloys, Secondary raw materials |
| DryingHeat treatment | – | Grain range 1 to 10 mm | – | – | industrial raw materials |
| ScreeningTesting/Fractionation | – | Grain range 0.045 mm to 10 mm | – | – | Minerals, Alloys, Secondary raw materials |
| DedustingProcessing | – | Grain range 0.5 to 6 mm | – | – | industrial raw materials |
| PackagingProcessing/Logistics | – | Grain size up to 10 mm | – | – | Minerals, Chemicals, Alloys |
| Magnetic separationProcessing | – | Grain range 0.5 to 10 mm | – | – | industrial raw materials |
| Optical sortingProcessing | – | Grain range 0.5 to 6 mm | – | – | Minerals, Secondary raw materials |
6 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Cone, jaw and vertical crushers | – | – | Mohs hardness up to 8, input size up to 200 mm | – | Leun/Amdorf |
| Intensive, plough-share and double-cone mixers | – | – | up to 15 components, grain size up to 10 mm | – | Leun/Amdorf |
| Hammer, impact and ball mills | – | – | Input size up to 60 mm | – | Leun/Amdorf |
| Rotary drum dryers | – | – | Grain range 1 to 10 mm | – | Leun/Amdorf |
| Vibration, tangular and tumbling screening machines | – | – | Grain range 0.045 to 10 mm, with/without ultrasound | – | Leun/Amdorf |
| Packaging machines | – | – | Bags, big bags, drums | – | Leun/Amdorf |
Additional services
Quality
The company is certified to ISO 9001 and ISO 14001; the certificates are valid until March 2028. In addition, there is a certification according to DIN ISO 45001.
| Evidence | Leun |
|---|---|
| ISO 9001 | |
| ISO 14001 | |
| ISO 45001 (DIN ISO 45001) |
History
- 1880
Foundation of the company; development into a leading European supplier of specialty raw materials.