
Materials development, plant and process engineering as well as testing of glass, ceramics and raw materials.

Forschungsinstitut für Glas – Keramik GmbH
56203 Höhr-Grenzhausen (Headquarters, testing laboratory and pilot plant)New on Amplifa
About FGK
The Forschungsinstitut für Glas – Keramik (FGK) GmbH in Höhr-Grenzhausen has been supporting companies in the glass, ceramics and raw materials industries for more than 40 years in materials development, materials testing and raw material analysis. The institute's pilot plant covers almost the entire process chain for the production of ceramic products: from powder technology with comminution, homogenization and granulation, via shaping by pressing, extrusion, casting and additive manufacturing, to thermal treatment with binder removal, sintering (up to 1950 °C) and hot isostatic pressing (up to 2000 °C / 3000 bar). Silicate ceramics and technical ceramics as well as glass, glazes and enamels are processed. The accredited testing laboratory offers testing methods for glass, ceramics, raw materials and industrial minerals, including ceramic testing, glass analysis and tile testing. Applications lie in technical ceramics, dental ceramics, sanitary and structural ceramics, additive manufacturing, optical components, photocatalysis as well as food-contact materials.
- Site
- Höhr-Grenzhausen
- Processes
- Comminution / milling of ceramic raw materials, Homogenization / mixing and dispersing processes, Granulation (pelletizing, spray freeze-drying), Axial dry pressing, Cold isostatic pressing, Extrusion of ceramic compounds, Thermoplastic shaping (hot injection molding), Slip casting
- Materials
- Glass, Ceramics, Silicate ceramic materials, Technical ceramic materials, Dental ceramics, Glazes, Enamels, Industrial minerals
- Certificates
- Accredited testing laboratory, Accredited testing laboratory (DIN EN ISO/IEC 17025)
- Industries
- Glass industry, Ceramics industry, Raw materials and industrial minerals, Technical ceramics, Dental ceramics, Sanitary & structural ceramics
- 01
Raw material preparation & comminution
- 02
Homogenization & granulation
- 03
Shaping (pressing, extrusion, casting, additive manufacturing)
- 04
Drying, binder removal, sintering & HIP
- 05
Materials testing & qualification
Materials & Processes
Silicate ceramics
Silicate ceramic materials and raw materials for traditional and technical applications.
Technical ceramics
Development and qualification of technical ceramic materials up to high-temperature processing.
Dental ceramics
Materials and testing for dental ceramic applications.
Glass, glazes, enamels
Analysis and testing of glass, glazes and enamels.
Industrial minerals & raw materials
Analysis and processing of minerals and ceramic raw materials.
Sites
Höhr-Grenzhausen
DEHeadquarters, testing laboratory and pilot plant
- Lot size
- Single pieces to high volumes
- Materials
- Silicate ceramics, technical ceramics, glass, raw materials
- Jaw crusher (Fritsch)
- Stirred ball mills LMK 4, MiniCer, LabStar (Netzsch)
- Vacuum extruders VAR 50A/50 and VARQ 50A (ETC Händle)
- Hot injection molding machine GC-MPIM-2-MAX (Goceram)
- VPP 3D printer CeraFab Multi 2M30 (Lithoz)
- High-temperature furnace FHT 1750/1800 (Ceram Aix)
- High-temperature vacuum furnace LHTW 150-150/20 2G (Gero)
- HIP system up to 2000 °C / 3000 bar
Inside the production

Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Comminution / milling of ceramic raw materialsEngineering | – | – | – | – | silicate ceramic materials, technical ceramic materials |
| Homogenization / mixing and dispersing processesEngineering | – | – | – | – | silicate ceramic materials, technical ceramic materials |
| Granulation (pelletizing, spray freeze-drying)Engineering | – | – | – | – | Ceramics |
| Axial dry pressingForming | – | – | – | high volumes | Ceramics |
| Cold isostatic pressingForming | – | – | – | – | Ceramics |
| Extrusion of ceramic compoundsForming | – | – | – | – | Ceramics |
| Thermoplastic shaping (hot injection molding)Plastics | – | – | – | – | Ceramics |
| Slip castingCasting | – | – | – | – | Ceramics |
| Tape castingCasting | – | – | – | – | Ceramics |
| Additive manufacturing of ceramic components (VPP, material extrusion)Additive | – | – | – | single pieces to small series | Ceramics |
| Drying of ceramic componentsHeat treatment | – | – | – | – | Ceramics |
| Binder removal and sintering (up to 1950 °C, atmospheres: air, vacuum, argon, hydrogen, nitrogen)Heat treatment | – | – | – | – | Ceramics |
| Hot isostatic pressing (HIP, up to 2000 °C and 3000 bar)Heat treatment | – | – | – | – | technical ceramics, medical ceramics, optical ceramics |
| Materials development of technical ceramicsEngineering | – | – | – | – | Glass, Ceramics, Raw materials |
| Materials testing / materials characterization (accredited testing laboratory)Testing | – | – | – | – | Glass, Ceramics, Raw materials |
| Raw material analysisTesting | – | – | – | – | Raw materials, Industrial minerals |
| Glass analysis / glass testingTesting | – | – | – | – | Glass, Glazes, Enamel |
| Ceramic testingTesting | – | – | – | – | Ceramics |
| Tile testingTesting | – | – | – | – | Sanitary & structural ceramics |
39 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Jaw crusher | Fritsch | – | – | – | Höhr-Grenzhausen |
| Cross-beater mill | Retsch | – | – | – | Höhr-Grenzhausen |
| Planetary ball mill | Fritsch | – | – | – | Höhr-Grenzhausen |
| Stirred ball mill | Netzsch LMK 4 | – | – | – | Höhr-Grenzhausen |
| Stirred ball mill | Netzsch MiniCer | – | – | – | Höhr-Grenzhausen |
| Stirred ball mill | Netzsch LabStar | – | – | – | Höhr-Grenzhausen |
| Three-roll mill | Exakt 80E/0333 | – | – | – | Höhr-Grenzhausen |
| Eirich mixer | Eirich RV02-E | – | – | – | Höhr-Grenzhausen |
| Mixer | Ika Planetron | – | – | – | Höhr-Grenzhausen |
| Dissolver | Pendraulik | – | – | – | Höhr-Grenzhausen |
| Ultra Turax | Ika T25, T50 | 2 | – | – | Höhr-Grenzhausen |
| Double-shaft Z-arm mixer high-performance kneader | Ika | – | – | – | Höhr-Grenzhausen |
| Acoustic Mixer | Resodyn LabRAM II | – | – | – | Höhr-Grenzhausen |
| Centrifugal mixer | Kurabo Industries Ltd. KK-400WE | – | – | – | Höhr-Grenzhausen |
| Pelletizing pan | Eirich TR04 | – | – | – | Höhr-Grenzhausen |
| Spray freeze dryer | PowderPro | – | – | – | Höhr-Grenzhausen |
| Micro-jet reactor | Sythesechemie / Prominent | – | – | – | Höhr-Grenzhausen |
| Freeze dryer | Christ Gamma 2-20 | – | – | – | Höhr-Grenzhausen |
| Hand lever press | P.O. Weber PW 20 | – | – | – | Höhr-Grenzhausen |
| Cold isostatic press | EPSI | – | – | – | Höhr-Grenzhausen |
| Torque rheometer | Haake PolyLab OS | – | – | – | Höhr-Grenzhausen |
| Vacuum extruder | ETC Händle VAR 50A/50 | – | – | – | Höhr-Grenzhausen |
| Vacuum extruder | ETC Händle VARQ 50A | – | – | – | Höhr-Grenzhausen |
| Tape casting line | – | – | – | – | Höhr-Grenzhausen |
| Hot injection molding machine | Goceram GC-MPIM-2-MAX | – | – | – | Höhr-Grenzhausen |
| Lithography based Ceramic Manufacturing (VPP printer) | Lithoz GmbH CeraFab Multi 2M30 | – | – | – | Höhr-Grenzhausen |
| Composite Extrusion Modelling 3D printer | Aim3D GmbH ExAM 255 | – | – | – | Höhr-Grenzhausen |
| Material Extrusion 3D printer | CSP s.r.l. Delta WASP 40100 Clay | – | – | – | Höhr-Grenzhausen |
| Binder removal furnace | Linntherm KS 80/S | – | – | – | Höhr-Grenzhausen |
| Binder removal furnaces | Nabertherm L 9/11 BO, L 40/11 BO | 2 | – | – | Höhr-Grenzhausen |
| Electric chamber furnaces | Nabertherm | – | – | – | Höhr-Grenzhausen |
| Chamber furnace | Nabertherm N20/HR | – | – | – | Höhr-Grenzhausen |
| Gradient furnace | Nabertherm Labotherm GR 1300/14S | – | – | – | Höhr-Grenzhausen |
| High-temperature furnace | Ceram Aix FHT 1750 u. 1800 | 2 | – | – | Höhr-Grenzhausen |
| High-temperature furnace | Nabertherm LHT 04/17 | – | – | – | Höhr-Grenzhausen |
| Elevator furnace | Ceram Aix ELT 1750 | – | – | – | Höhr-Grenzhausen |
| Protective gas furnace | Ceram Aix | – | – | – | Höhr-Grenzhausen |
| High-temperature vacuum furnace | Gero LHTW 150-150/20 2G | – | – | – | Höhr-Grenzhausen |
| HIP system (hot isostatic press, up to 2000 °C / 3000 bar) | – | – | – | – | Höhr-Grenzhausen |
Additional services
Quality & Accreditation
The testing laboratory is designated as an accredited testing laboratory according to DIN EN ISO/IEC 17025. Testing includes ceramic testing, glass analysis, raw material analysis and tile testing.
| Evidence | Höhr-Grenzhausen |
|---|---|
| Accredited testing laboratory (DIN EN ISO/IEC 17025) |
History
Start of support activities for companies in the glass, ceramics and raw materials industries; today more than 40 years of experience