Silos, pneumatic and mechanical conveying systems as well as dosing systems for bulk materials technology – from design to turnkey plant
Mahr GmbH – Anlagentechnik für Schüttgüter
WiesbadenNew on Amplifa
About Mahr GmbH
Mahr GmbH, based in Wiesbaden, has been active in bulk materials plant engineering since 1994 and can look back on a company history that began in 1898 with a metalworking shop. The company manufactures silos, multi-chamber silos and bunkers in steel and stainless steel, pneumatic conveying systems for the low, medium and high pressure ranges, and mechanical conveying systems such as screw conveyors, bucket elevators and belt conveyors. The portfolio is complemented by dosing systems (screw feeders, rotary valve feeders, vibrating troughs, screw scales), homogenizing silos up to 300 m³, telescopic loading equipment, milk of lime treatment plants, and an extensive range of fittings and accessories. The services include planning, manufacturing, installation and handover of turnkey plants including fully automatic, computer-controlled systems; special designs and an in-house test facility for testing critical bulk materials round off the offering. Fields of application include, among others, chemicals, lime/gypsum, glass, cement, steelworks, fertilizers, foundries and power plants.
- Site
- Wiesbaden
- Processes
- Silos, silo systems and bunkers (storage of bulk materials), Homogenizing silos, Pneumatic conveying systems (low, medium and high pressure ranges), Mechanical conveying systems (screw conveyors, bucket elevators, belt conveyors), Dosing systems (screw feeders, rotary valve feeders, vibrating troughs, screw scales), Telescopic loading equipment for open or closed transport containers, Fully automatic, computer-controlled systems, Milk of lime treatment plants (batch or continuous, for quicklime [CaO] and
- Materials
- Steel, Stainless steel
- Certificates
- Own test facility
- Founded
- 1898
- Industries
- Chemicals, Lime/Gypsum, Glass, Paints, Cement, Non-metallic Minerals, Clays and Stones
- 01
Consulting and planning
- 02
Bulk material testing in own test facility
- 03
Design and special designs
- 04
Manufacturing (steel/stainless steel)
- 05
Control and process control technology
- 06
On-site installation
- 07
Turnkey handover
- 08
Spare parts delivery
Materials & Processes
Steel
Material for silos, multi-chamber silos, bunkers and plant components in all sizes, also as special designs.
Stainless steel
Material for silos and plants when requirements for corrosion protection or product purity apply.
Locations
Wiesbaden
DECompany headquarters / Administration
- Materials
- Steel, stainless steel
- Own test facility for bulk material testing
Components & Plant Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Silos, silo systems and bunkers (storage of bulk materials)Plant construction | – | – | – | – | Steel, Stainless steel |
| Homogenizing silosPlant construction | – | 300 m³ volume | – | – | – |
| Pneumatic conveying systems (low, medium and high pressure ranges)Plant construction | – | Conveying distances up to 1000 m | – | a few kilograms – several hundred tonnes per hour | – |
| Mechanical conveying systems (screw conveyors, bucket elevators, belt conveyors)Plant construction | – | – | – | – | – |
| Dosing systems (screw feeders, rotary valve feeders, vibrating troughs, screw scales)Plant construction | – | – | – | – | – |
| Telescopic loading equipment for open or closed transport containersPlant construction | – | – | – | – | – |
| Fully automatic, computer-controlled systemsEngineering | – | – | – | – | – |
| Milk of lime treatment plants (batch or continuous, for quicklime [CaO] andPlant construction | – | – | – | – | – |
| Bulk material testing of critical bulk materials in own test facilityTesting | – | – | – | – | – |
| Installation work outside the factory (turnkey plant handover)Installation | – | – | – | – | – |
| Planning and turnkey plant construction (from planning to handover)Engineering | – | – | – | – | – |
| Silo accessories/fittings (cast flat slide gate, modular slide gate, shut-off damper, pinch valve)Plant construction | – | – | – | – | – |
Additional services
Quality
Critical bulk materials are tested with regard to their conveying behavior in the in-house test facility before plants are designed. Handover is turnkey including commissioning in accordance with the General Installation Conditions.
| Evidence | Wiesbaden |
|---|---|
| Own test facility |
History
- 1898
Company founded by Wilhelm Mahr in Wiesbaden (metalworking shop).
- 1932
Taken over by Wilhelm Mahr junior; greenhouses and heating systems for horticultural businesses; nearly 300 employees.
- 1948
Post-war upswing, more than 50 employees.
- 1951
Walter Wilhelm becomes a partner; expansion into electronic heating appliances and mobile cement silos; leadership in the development of cement mixing plants.
- 1974
Takeover of the conveying technology division of Maschinenfabrik Wiesbaden; turnkey production from a single source.
- 1983
Spin-off of the greenhouse construction division.
- 1993
Company bankruptcy.
- 1994
Re-founding of Mahr GmbH – Anlagentechnik für Schüttgüter by Dieter Bee.
- heute
Over 60 years of experience in plant engineering; partner for bulk materials technology.