What Hans G. Hauri KG Mineralstoffwerke does

Hans G. Hauri KG Mineralstoffwerke is a family-owned German mineral processing company headquartered in Bötzingen, Baden-Württemberg, founded in 1955. The company extracts and processes volcanic phonolite, limestone, and quartz porphyry across four production sites (Bötzingen, Merdingen, Freiamt-Ottoschwanden, and Salzkotten), employing nearly 120 people. Its core technical differentiator is the rare Bötzingen phonolite, whose post-volcanic hydrothermal alteration produced embedded natrolite zeolites, giving it distinctive ion-exchange and pozzolanic properties used in concrete, water treatment, animal feed, and glass manufacturing.

The company monetizes through direct B2B sales of branded specialty minerals and toll-processing services across 12 product categories: chromate reduction (CemProtector), asphalt fillers (Zeofill/Zeobit/Maxifill/Kalbit), soil stabilization (ZIP 35, TUCA 90, Phocal), agriculture and forestry (optiflor, VULKAMIN), geothermal thermal mortar (ZEO-Therm 1.0 and 2.0), animal welfare products (ZEOSAN as registered E566 feed additive, ZEOCARE poultry dust bath), hydraulic binders (KÜMIX, HAURI Micro, FLOW&FILL), concrete additives (Hydrolith with European Type II approval and k-value 0.6, Carbolith, Climament low-CO2 cement), glass industry raw materials, and VULKANIT-FANGO for healthcare/wellness. Service offerings include contract grinding and granulation of customer-owned raw materials (Fremdrohstoffe-Lohnbearbeitung) and custom plant engineering for peloid and lime-slaking facilities (Anlagenbau).

Go-to-market is sales-led and direct, with management personally overseeing distribution (Frank Hauri) and production (Thomas Hauri); products are sold via product-specific phone contacts and direct delivery across Germany, Switzerland, and France, with optional self-collection at quarry sites. Pricing is non-public and quote-based, with specialty products on multi-year contracts and aggregates available on pay-as-you-go terms. The company was designated system-relevant during COVID-19 for supplying wastewater treatment, waste incineration, agriculture, animal nutrition, and glass customers, and holds ISO 50001 and BG RCI safety certifications. Recent strategic moves include the acquisition of MIG Chromatreduktion (now CemProtector by Hauri) and participation in an 11-company CO2-separation pilot consortium aimed at climate-neutral lime production by 2045.

Name

Hans G. Hauri KG Mineralstoffwerke

Legal name

HANS G. HAURI KG Mineralstoffwerke

Website

https://hauri.de

Company type

Private

Founded year

1955

Operating status

Operating

Headcount range

1–10 employees

Short description

Hans G. Hauri KG Mineralstoffwerke is a family-owned German mineral processor extracting and refining volcanic phonolite, limestone, and quartz porphyry into branded specialty products for construction, agriculture, animal welfare, water treatment, glass, and healthcare B2B customers across Germany, Switzerland, and France.

Ownership category

akta.pro rank

Product category

Industrial Minerals & Mineral Products

NAICS

Ground or Treated Mineral and Earth Manufacturing (327992), Other Nonmetallic Mineral Mining and Quarrying (21239), Kaolin, Clay, and Ceramic and Refractory Minerals Mining (212323)

SIC

Mining & Quarrying Of Nonmetallic Minerals (No Fuels) (1400), Abrasive, Asbestos & Misc Nonmetallic Mineral Prods (3290)

akta.pro primary industry

Kaolin & Industrial Clay Mining (Bentonite, Ball Clay, Fuller’s Earth) (IMAKAGAJ)

akta.pro secondary industries

Silica & Quartz Mining (Industrial Silica Sand, High-Purity Quartz) (IMAKAGAK), Functional Minerals & Chelates (Trace Mineral Complexes) (AFADAKAJ), Mineral Soil Amendments (Lime, Gypsum, Rock Phosphate, Sulfur, Trace Minerals) (AFABAKAF), Minerals & Trace Elements (Calcium, Magnesium, Zinc, Iron; Chelated Minerals) (AFAJAKAB)

Keywords

• Industrial mineral processing
• Natural mineral fillers
• Volcanic phonolite products
• Limestone and quartz porphyry
• Mineral raw materials

Headquarters

HQ city

Bötzingen

HQ country

Germany

HQ region

Europe

Offices4 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Infrastructure, Technology or R&D

Revenue model

1. Mineral and aggregate product sales: Sale of processed mineral products including phonolite, limestone, and quartz porphyry in various forms (aggregates, fillers, ground stone). Products sold as raw materials or as branded formulations to industrial customers, construction companies, agriculture, and environmental service providers. Revenue is transactional, driven by volume and product specification.
2. Branded specialty chemical products: Sale of branded specialty products including CemProtector (chromium reduction), Hydrolith (concrete additive), ZEOSAN (animal feed additive), VULKANIT-FANGO (health/medical product), ZEO-Therm (geothermal mortar), and others. These carry brand premiums and are sold with technical specification and support.
3. Contract processing / toll manufacturing: Processing of external (customer-owned) raw materials through grinding, mixing, and granulation on Hauri's equipment. Customers send raw materials to Hauri for processing and pay for the toll processing service. Discretion emphasized.
4. Custom plant engineering (Anlagenbau): Design, fabrication, and installation of peloid (mud/thermal bath) and lime preparation systems for healthcare facilities and industrial clients. Includes consulting from feasibility study through planning and project execution.

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels4 records

Core offering

Hans G. Hauri KG Mineralstoffwerke extracts and processes volcanic phonolite, limestone, and quartz porphyry into functional mineral products for industrial applications. The company manufactures fillers, substrates, and specialty mineral products for construction, agriculture, animal welfare, healthcare, environmental technology, and the glass industry. It also provides contract mineral processing services and plant engineering for industrial customers.

Product overview

Hans G. Hauri KG Mineralstoffwerke is a family-owned mineral processing company operating multiple production sites (Bötzingen, Merdingen, Freiamt, Salzkotten) that processes volcanic phonolite, limestone, and quartz porphyry into a diverse portfolio of products. The company offers a unified platform of mineral-based solutions organized across 12 product categories: chromate reduction (CEM-PROTECTOR line), natural aggregates, soil stabilization (ZIP 35, TUCA 90), agriculture/forestry (optiflor, VULKAMIN), geothermy (ZEO-Therm), animal welfare (ZEOSAN, ZEOCARE), hydraulic binders (KÜMIX, HAURI Micro, FLOW&FILL), bitumen fillers, concrete additives (Hydrolith, Carbolith), glass industry applications, health products (VULKANIT-FANGO), and environmental products. The portfolio is complemented by two service offerings: contract processing (grinding, mixing, granulation) and plant construction. The core raw material phonolite from Bötzingen is noted for its natural pozzolanic properties and zeolite content, enabling applications ranging from construction materials to animal feed additives.

Differentiator

Problem solved

Functional benefit

Products and services

• Phonolite mineral products Processed volcanic phonolite products for industrial applications including construction, agriculture, and environmental technology. Sold to industrial buyers and B2B customers.
• Limestone mineral products Processed limestone products for industrial applications including construction, agriculture, environmental technology, and glass manufacturing. Sold to industrial buyers.
• Quartz porphyry mineral products Processed quartz porphyry products for industrial applications. Sold to industrial buyers and B2B customers.
• Animal welfare and livestock substrates Mineral substrates designed for livestock and animal welfare applications, providing moisture regulation and hygiene properties. Sold to agricultural businesses and livestock operations.
• Contract mineral processing services Contract processing services where the company processes customer-supplied mineral materials using its grinding, calcining, and drying capabilities. Targeted at industrial customers needing mineral processing capacity.
• Plant engineering services Engineering services for mineral processing plants, leveraging the company's decades of mineral processing expertise. Targeted at industrial customers in the mineral processing sector.

Quantifiable outcome

• 1 tonne of phonolith substitution saves ~0.6 tonnes CO2 compared to cement
• +4 more outcomes

Named customers5 records

Segments7 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Five partnerships are on record, tiered core and minor.

• BORSIG (anlagen manufacturer)coreStrategic or Co-development Partner · 1 January 2026BORSIG is developing the CO2 separation pilot plant technology being tested at Calcis Warstein. The membrane-based process being tested requires ~half the energy of conventional amine scrubbing. 10 other lime/dolomite companies also participate in the joint research initiative.
• Calcis Warstein and 10 other lime industry companiescoreStrategic or Co-development Partner · 1 January 202611 companies (including Calcis Warstein, Johann Bergmann, Kalkwerke Otto Breckweg, HANS G. HAURI KG, Kalkwerke H. Oetelshofen, Köhler Kalk, Märker Kalk, SCHAEFER KALK, Hermann Trollius, Wünschendorfer Dolomitwerk, Zement- und Kalkwerke Otterbein) jointly funding a CO2 separation pilot project. The project tests a membrane-based CO2 separation technology to advance toward climate-neutral lime production by 2045.
• Saint Gobain WebercoreStrategic or Co-development Partner · 1 January 2008Partnership for limestone quarrying at Merdingen. Hauri operates the quarry extraction while Saint Gobain Weber receives the limestone for their operations. Represents a long-term supply relationship supporting Merdingen operations.
• Hydroelektrik Ravensburg (hydroelectric power company)minorStrategic or Co-development Partner · 1 January 2001Partnership since 2001 for water treatment applications using phonolite. Hydroelektrik Ravensburg collaborates with Hauri on physical wastewater treatment using phonolite in the 0.4-0.8 mm grain size, leveraging the material's high specific surface area for filtration.
• Burkhard Brandt and Wolfgang Bonder (founders of MIG Chromatreduktion)minorStrategic or Co-development Partner · 1 January 2001Hauri acquired the MIG Chromatreduktion business from its founders (Dipl.-Chem.Ing. Burkhard Brandt and Beton-Ing. Wolfgang Bonder) who developed the chromium reduction system starting in 2001. Hauri positions itself as 'partner of the first hour' continuing the business with the same competence and reliability.

Scale indicators7 records

Recent moves7 records

Expansion highlights6 records

Broad incumbents

• CRH plc: Irish-headquartered global building materials group with European aggregates and concrete products operations. Comparable as a broad incumbent in European aggregates and construction-adjacent products.
• Saint-Gobain: French global building materials and construction products group; Hauri's limestone supply partner at Merdingen since 2008. Comparable through overlapping construction-materials exposure and the direct partnership relationship.
• K+S AG: German-listed potash and salt miner with agricultural and industrial customer base. Comparable as a long-established German industrial mineral company serving agriculture and industry, though focused on evaporite rather than volcanic/carbonate minerals.
• Holcim: Swiss-listed global construction materials company with significant European cement, aggregates, and low-carbon concrete solutions. Comparable as a supplier to the same construction and cement customers that buy Hauri specialty additives.
• Heidelberg Materials: Germany-headquartered global building materials company producing cement, aggregates, and ready-mix concrete. Comparable in aggregates, cement-adjacent chemistry, and German construction exposure; vastly larger scale.

Direct peers

• Quarzwerke Group: German family-owned specialty mineral processor producing high-purity quartz, silica, and functional mineral fillers for construction, industrial, and consumer applications. Closely comparable in scale, family ownership structure, German footprint, and downstream mineral-product portfolio.
• IMERYS: French specialty industrial minerals group supplying functional mineral additives for construction, paper, paint, ceramics, and environmental applications. Directly comparable in 'value-added industrial mineral processing for end-use performance' positioning, though at much greater scale.
• Sibelco: Belgian-headquartered global industrial minerals miner and processor producing silica, nepheline, feldspars, and specialty minerals. Comparable as a vertically integrated industrial minerals company serving construction, glass, and water-treatment markets.

Emerging players

• Calcis Warstein: German lime producer and partner in the 11-company CO2 separation pilot consortium. Directly comparable as a German/European specialty lime producer partnering with Hauri on climate-neutral lime research.
• Märker Kalk: German lime producer participating in the same CO2 separation research consortium as Hauri. Comparable as a peer German lime and mineral-products company of similar regional scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks7 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/HansGHauriKG
• Instagraminstagram.com/hauri.mineralstoffwerke
• LinkedInlinkedin.com/company/hauri-mineralstoffwerke

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Hans G. Hauri KG Mineralstoffwerke