Development and production of unshaped refractory products and precast parts for the steel industry
WEERULIN GmbH
Mülheim an der Ruhr (DE) · Itaquaquecetuba/São Paulo (BR) · Bozüyük (TR)New on Amplifa
About Weerulin
WEERULIN GmbH is a family-owned company now in its third generation, headquartered in Mülheim an der Ruhr, that has been developing and producing refractory products for the steel industry for over 75 years. Its core business is unshaped, monolithic refractory masses — wet-spraying, pouring, spraying, casting, backfilling, covering and recycling masses — based on high-refractory minerals such as magnesite, olivine, bauxite, corundum, dunite, andalusite and zircon silicate. The product range is complemented by cast precast parts (preshapes) such as EAF lids, RH snorkels, PowerDrum and special components weighing from 5 kg to 15 tonnes, whose pattern-making and steel construction are carried out in an integrated steel fabrication shop. The group produces around 60,000 tonnes of refractory products annually at sites in Germany, Brazil and Turkey with about 180 employees and supplies more than 200 steelworks in 35 countries. In addition to products, Weerulin offers machine technology, full-line service, engineering with CFD flow simulations, consulting and recycling of spent refractory lining. More than 3,500 recipes enable tailor-made solutions for blast furnace, electric arc furnace, converter, steel ladle, RH vacuum degasser and tundish.
- Site
- Mülheim an der Ruhr
- Processes
- Production of unshaped refractory masses (wet-gunning, pouring, spraying, casting, backfilling,, Manufacture of refractory precast parts (preshapes: EAF lids, RH snorkels, PowerDrum,, Pattern-making and manufacture of steel constructions (integrated steel fabrication shop), Relining and repair of blast furnaces with refractory masses, Full-line service for refractory management (delivery, maintenance, deslagging), Engineering (template systems, relining zones, flow-influencing inserts), CFD flow simulations (SolidWorks Pro/Flow Simulation) for component development, Recycling of spent refractory lining (collection, sorting, sieving, processing)
- Materials
- Magnesite, Olivine, Bauxite, Corundum, Dunite (EBT filling sand FOR DUNA), Andalusite, Zircon silicate, Magnesia-chrome bricks
- Certificates
- ISO 9001:2015 (DIN EN ISO 9001:2015), SCC**-VAZ:2021 (Safety Certificate Contractors), ISO 9001, SCC (Safety Certificate Contractors)
- Employees
- 180
- Industries
- Steel industry (blast furnace, electric arc furnace, converter), Secondary metallurgy (steel ladle, RH vacuum degasser), Continuous casting / foundry (tundish, shot production, strip steel processes), Steel industry / steelmaking (integrated steelworks, EAF steel plants), Secondary metallurgy, Continuous casting/foundry (shot production, strip steel processes)
- 01
Raw material selection and processing (natural minerals, processing in
- 02
Recipe development (over 3,500 recipes, testing, CFD simulation)
- 03
Fully automated production of unshaped masses in Mülheim an der Ruhr
- 04
Precast part production (preshapes) with pattern-making and steel fabrication
- 05
Packaging as Big Bag, silo or bagged goods (standard products within 24h)
- 06
Delivery, maintenance, deslagging at the customer's site (full-line service)
- 07
Recycling of spent refractory lining including mobile recycling concepts
Materials & Processes
Magnesite
Basic raw material for basic sprayed, pouring and casting masses for converters, steel ladles and RH installations.
Olivine
Cost-optimized raw material component for preventive gunning maintenance in the EAF and steel ladle.
Bauxite
Alumina-containing base for spraying and casting masses, among others in permanent linings of ladles and tundishes.
Corundum
High-refractory raw material for highly stressed maintenance masses on RH snorkels.
Dunite (EBT filling sand FOR DUNA)
Filling sand roughly 10% lighter for the EBT tapping with stable opening rates.
Andalusite
Raw material for thixotropic or self-flowing tundish permanent lining concretes.
Zircon silicate
Raw material option for high-density permanent lining concretes in the steel distributor.
Magnesia-chrome bricks
Wear lining in fully prefabricated RH snorkels.
Refractory concretes (preshapes)
Own high-quality concretes for cast precast parts from 5 kg to 15 t.
Steel (construction)
Pattern-making and steel constructions of the precast parts in the integrated steel fabrication shop.
Sites
Mülheim an der Ruhr
DEHeadquarters plant: fully automated production of unshaped masses; precast parts plant (Weerulin Preshapes)
- Part weight / size
- Preshapes 5 kg – 15 t
- Lot size
- Standard products within 24 h
- Materials
- Magnesite, olivine, bauxite, corundum, andalusite, zircon silicate, dunite
- Wet-gunning machines
- Rotor and slinging machines
- Vessel pressure machines
- Concrete pumps
- Robots and manipulators (shooter, INGUN®)
- Mobile computer-controlled scales
- Forced-action mixers
Itaquaquecetuba / São Paulo
BRProduction site: refractory masses and components (WEERULIN do Brasil)
- Materials
- Refractory masses and components
Bozüyük (Bilecik)
TRMixing plant (Süperref Ateşe Mukavim Malzeme San. A.Ş.)
- Materials
- Refractory masses
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Production of unshaped refractory masses (wet-gunning, pouring, spraying, casting, backfilling,Casting | – | – | – | – | Magnesite, Olivine, Bauxite, Corundum |
| Manufacture of refractory precast parts (preshapes: EAF lids, RH snorkels, PowerDrum,Casting | – | – | 5 kg – 15 tonnes | – | refractory concretes (magnesia-chrome, alumina-based) |
| Pattern-making and manufacture of steel constructions (integrated steel fabrication shop)Engineering | – | – | – | – | Steel |
| Relining and repair of blast furnaces with refractory massesSurface | – | – | – | – | refractory masses |
| Full-line service for refractory management (delivery, maintenance, deslagging)Assembly | – | – | – | – | Refractory material |
| Engineering (template systems, relining zones, flow-influencing inserts)Engineering | – | – | – | – | – |
| CFD flow simulations (SolidWorks Pro/Flow Simulation) for component developmentEngineering | – | – | – | – | – |
| Recycling of spent refractory lining (collection, sorting, sieving, processing)Other | – | – | – | – | Magnesite, pouring mass spent lining |
| Machine technology: design, planning, commissioning and maintenance of application equipmentEngineering | – | – | – | – | – |
| Technical consulting for refractory processesEngineering | – | – | – | – | – |
5 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Wet-gunning machines | – | – | – | – | Mülheim an der Ruhr |
| Rotor and slinging machines | – | – | – | – | Mülheim an der Ruhr |
| Vessel pressure machines | – | – | – | – | Mülheim an der Ruhr |
| Concrete pumps | – | – | – | – | Mülheim an der Ruhr |
| Robots and manipulators (shooter) | INGUN® (RH internal gunning manipulator) | – | – | – | Mülheim an der Ruhr |
Additional services
Reference customers
Quality
Weerulin operates a quality management system according to DIN EN ISO 9001:2015 (LRQA, initial certification 2005) with process monitoring, complete batch documentation and individual quality agreements with customers. For on-site services such as delivery and full-line service, SCC certification (TÜV NORD, initial certification 2011) can be evidenced.
| Evidence | Mülheim an der Ruhr |
|---|---|
| ISO 9001 | |
| SCC (Safety Certificate Contractors) |
History
Founded as a family business by Gisela Lingen; today run in the 3rd generation by Robert and Richard Fechner (in existence for over 75 years).
- 2005
Initial certification to ISO 9001 (LRQA).
- 2011
Initial certification to SCC (TÜV NORD) for delivery and service activities.
Over 40 years of pouring-mass technology with more than 200,000 t of produced pouring masses; over 40 years of experience in blast furnace relining.
Full-line service partner for RH vacuum degassers for more than 20 years.