
EKW GmbH manufactures refractory materials and ready-made precast parts based on Eisenberger Klebsand for furnaces and melting plants.

EKW GmbH
Eisenberg/Pfalz · Paris · Concorezzo · Pomerode · Kuala Lumpur · Pesqueria · Šentjernej · IstanbulNew on Amplifa
About EKW Refractories
EKW GmbH, originally Eisenberger Klebsandwerke, was founded in 1903 and has remained family-owned ever since. The company produces a comprehensive portfolio of refractory materials: refractory castables (including self-flowing and cement-free generations), neutral, basic and acidic semi-plastic masses, dry vibromasses as well as materials for repair and shotcreting work. In addition, refractory precast parts such as cover cores, dams and weirs, sleeves, changeover outlets, pouring nozzles and refractory bricks are manufactured. The basis of many products is the natural Klebsand from the company's own pit in the Eisenberg Basin, a local geological specialty with high mechanical strength up to about 1,700 °C. Alongside production, EKW offers system solutions for the functional lining of melting and heat treatment furnaces, refractory management, engineering, maintenance, installation and research & development. Customers come from iron foundries, steel foundries, pig iron and steel production, aluminum, non-ferrous metals, cement, lime, environment, energy and chemicals. Around 150 employees work at the Eisenberg/Pfalz site; through subsidiaries in seven countries, the company supplies customers worldwide.
- Site
- Eisenberg/Pfalz
- Processes
- Production of refractory castables (including self-flowing and cement-free generations), Production of neutral, basic and acidic semi-plastic masses, Production of dry vibromasses, Materials for repair and shotcreting work, Production of refractory precast parts (cover core, dams & weirs, inner sleeve, bottom sleeve,, Functional lining of melting and heat treatment furnaces including surrounding, Installation of refractory linings incl. heat-up, drying, sintering and liquid sintering of the, Refractory management, maintenance and installation work, individual consulting
- Materials
- Klebsand (Eisenberger Klebsand), Refractory ceramic based on aluminosilicates, Refractory composite material based on Klebsand, Synthetic and natural raw materials (refractory), Eisenberger Klebsand, Synthetic and natural refractory raw materials, Refractory castables, Dry vibromasses
- Certificates
- DIN EN ISO 9001:2015, DIN EN ISO 50001:2018, DIN EN ISO 14001:2015, DIN ISO 45001:2018, ISO 9001, ISO 14001, ISO 45001, ISO 50001
- Founded
- 1903
- Employees
- 150
- Industries
- Iron foundries, Steel foundries, Pig iron production, Steel production, Aluminum, Non-ferrous metals
- 01
Mining of Klebsand in the company-owned pit
- 02
Raw material qualification in research & development
- 03
Production of refractory castables, plastic masses and dry vibromasses
- 04
Production of refractory precast parts
- 05
Engineering and refractory management
- 06
Installation of refractory linings incl. heat-up, drying and sintering
- 07
Maintenance and service services
Materials & Processes
Eisenberger Klebsand
Natural raw material from the company-owned pit with high strength and binding properties up to about 1,700 °C, the basis of many refractory products.
Refractory ceramic based on aluminosilicates
Ceramics based on aluminosilicates of Eisenberger Klebsand for a wide range of applications, awarded in 2008.
Refractory composite material based on Klebsand
Composite material developed with TU Bergakademie Freiberg and scaled up to production (award 2010).
Synthetic and natural refractory raw materials
Specifically qualified raw materials as an alternative under price pressure and increasing requirements.
Refractory castables
Self-flowing and cement-free generations for linings of melting and heat treatment furnaces.
Dry vibromasses
Masses for the lining-related lining of melting units.
Sites
Eisenberg/Pfalz
DEHead office and production plant
- Materials
- Klebsand, aluminosilicates, refractory castables, dry vibromasses
- Own Klebsand pit
- Production facilities according to the latest state of the art
- Laboratory for research & development
Components


Inside the production


Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Production of refractory castables (including self-flowing and cement-free generations)Casting | – | – | – | – | Klebsand, Aluminosilicates |
| Production of neutral, basic and acidic semi-plastic massesCasting | – | – | – | – | Klebsand, Aluminosilicates |
| Production of dry vibromassesCasting | – | – | – | – | Klebsand |
| Materials for repair and shotcreting workSurface | – | – | – | – | Refractory ceramic, Klebsand |
| Production of refractory precast parts (cover core, dams & weirs, inner sleeve, bottom sleeve,Casting | – | – | – | – | Refractory ceramic, Klebsand, Aluminosilicates |
| Functional lining of melting and heat treatment furnaces including surroundingInstallation | – | – | – | – | Refractory materials |
| Installation of refractory linings incl. heat-up, drying, sintering and liquid sintering of theInstallation | – | – | – | – | Refractory materials |
| Refractory management, maintenance and installation work, individual consultingEngineering | – | – | – | – | – |
| Lining of induction channel and pouring furnaces, induction crucible furnaces, shaft furnaces,Installation | – | – | – | – | Refractory ceramic, Klebsand |
| Research & development of refractory products, raw material qualification, process engineeringEngineering | – | – | – | – | Klebsand, Aluminosilicates, synthetic raw materials |
Additional services
Quality & Certification
EKW is certified to DIN EN ISO 9001, ISO 14001, ISO 45001 and ISO 50001. Defined warranty conditions apply for installations of induction channel and pouring furnaces, including heat-up, drying, sintering and liquid sintering of the lining.
| Evidence | Eisenberg/Pfalz |
|---|---|
| ISO 9001 | |
| ISO 14001 | |
| ISO 45001 | |
| ISO 50001 |
History
- 1903
Foundation of Eisenberger Klebsandwerke by four small pit operators
- 1928
Foundation of the first subsidiary in France
- 2008
Raw Materials Industry Company Award Rhineland-Palatinate
- 2010
Raw Materials Industry Company Award for a refractory composite material based on Klebsand (with TU Bergakademie Freiberg)
- 2012
Commendation by the State of Rhineland-Palatinate on Raw Materials Day
- 2021
Innovation Award Rhineland-Palatinate, Special Industry Award category