Global specialty minerals company: bentonite, calcium carbonate and mineral-based solutions from mine to market
Minerals Technologies Inc.
New York (Headquarters) · Gascoyne · Lovell · Colony · Belle Fourche · Neenah · Granite City · Belvidere · Aberdeen · Perth · Puchong · ScottsbluffNew on Amplifa
About Minerals Technologies
Minerals Technologies Inc. (MTI) is a global, technology-driven specialty minerals company headquartered in New York City that develops, produces, sells and distributes minerals and mineral-based products and services. MTI is the world's largest producer of bentonite and a leading producer of calcium carbonate (PCC/GCC). Vertical integration extends from mine to market: owned deposits are processed in the company's own plants, using proprietary technologies, into product-specific solutions. The four core technologies are Crystal Engineering, Functional Additives, Engineered Blends and Particle Surface Modification. The products are used in paper and packaging, food and pharmaceuticals, household and personal care, pet care, as well as in the steel industry, foundry industry, construction, refractory materials and wastewater treatment. MTI employs around 4,000 people at more than 110 locations in 34 countries with 12 R&D centers and achieved net sales of USD 2.1 billion in 2025; the company is listed on the New York Stock Exchange (NYSE: MTX).
- Site
- New York, NY
- Processes
- Crystal Engineering (synthesis of crystal type, size and morphology), Engineered Blends (customized blends of minerals and additives), Green Sand Bonds / Green Sand Molding Materials (green sand molding compounds for foundries), Metal Fluxing Agents (special crucible linings for ferrous and non-ferrous alloys), Refractory Materials (monolithic and shaped refractory materials and specialty products), Metallurgical Wire (products for improved castability and calcium treatment), Pyrogenics (high-purity carbon-based products for heat transfer and spreading), Laser Profile Measurement Technology (Ferrotron, for steelmaking)
- Materials
- Bentonite, Calcium Carbonate, Precipitated Calcium Carbonate (PCC), Ground Calcium Carbonate (GCC), Chromite Sand, Cellulose, Carbonaceous Materials (special carbon-based materials), Carbon (high-purity, for Pyrogenics)
- Certificates
- QEHS Policy (Documented), Sand Laboratory Services, Applied Analytical & Testing Services
- Employees
- ~4,000
- Industries
- Oil & Gas, Foundry/Metalcasting, Steel Industry, Refractories, Paper & Packaging, Construction/Infrastructure
- 01
Mineral extraction from owned deposits
- 02
Processing and treatment in the company's own plants
- 03
Crystal Engineering / Blends / Surface Modification
- 04
Laboratory testing and technical consulting
- 05
Sales and logistics (Ameri-Co)
Materials & Core Technologies
Bentonite
Base material for foundry molding compounds, drilling products, sealants and pet care; MTI is the world's largest bentonite producer.
Ground Calcium Carbonate (GCC)
Ground limestone for paper, packaging, construction and consumer goods.
Precipitated Calcium Carbonate (PCC)
Synthetic calcium carbonate using Crystal Engineering for paper, sealants, food and pharmaceuticals.
Chromite Sand
Foundry grade for particularly demanding metalcasting applications.
Cellulose
Additive component for green sand molding compounds in foundries.
Special carbon-based materials
Used in molding compounds as well as high-purity carbon products (Pyrogenics) for heat transfer.
Refractory Materials
Monolithic and shaped refractory products for high-temperature applications.
Metallurgical Wire
Products for improved castability and calcium treatment in steelmaking.
EVOH Membranes / Geotextiles
Active and passive sealing membranes (CETCO Building Materials) for building waterproofing.
Fluoro-Sorb Adsorbent
Mineral-based adsorbent for removing PFAS residues from water.
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Crystal Engineering (synthesis of crystal type, size and morphology)Engineering | – | – | – | – | Calcium Carbonate (PCC/GCC) |
| Engineering | – | – | – | – | Bentonite, Calcium Carbonate, Mineral Additives |
| Engineered Blends (customized blends of minerals and additives)Engineering | – | – | – | – | Bentonite, Mineral Blends |
| Engineering | – | – | – | – | Bentonite, Calcium Carbonate |
| Green Sand Bonds / Green Sand Molding Materials (green sand molding compounds for foundries)Casting | – | – | – | – | Bentonite, Organic Additives, Chromite Sand, Cellulose, Carbon-based Specialty Materials |
| Metal Fluxing Agents (special crucible linings for ferrous and non-ferrous alloys)Casting | – | – | – | – | Ferrous Alloys, Non-ferrous Alloys |
| Refractory Materials (monolithic and shaped refractory materials and specialty products)Heat Treatment | – | – | – | – | Refractory mineral materials |
| Metallurgical Wire (products for improved castability and calcium treatment)Casting | – | – | – | – | Steel (steelmaking application), Calcium treatment materials |
| Pyrogenics (high-purity carbon-based products for heat transfer and spreading)Heat Treatment | – | – | – | – | Carbon (carbon-based) |
| Laser Profile Measurement Technology (Ferrotron, for steelmaking)Testing | – | – | – | – | – |
| Waterproofing Membrane Technologies (active and passive sealing membranes)Engineering | – | – | – | – | Bentonite (GCL), EVOH Membranes, Geotextiles |
| Produced Water Treatment Systems (manufacture of modular/special systems for oil-water separation)Engineering | – | – | – | – | – |
| Hydrocyclones & Flotation Technology (separation of oil and solids from water)Engineering | – | – | – | – | – |
| Deep Bed Nutshell Filters (filtration)Engineering | – | – | – | – | – |
| Sand Laboratory Services (product testing and research analysis)Testing | – | – | – | – | – |
| Drilling Products (improvement of drilling fluid properties)Engineering | – | – | – | – | Bentonite |
| PFAS Remediation / Adsorbent Technology (Fluoro-Sorb Adsorbent)Engineering | – | – | – | – | Mineral-based adsorbent |
| Cat Litter Manufacturing (SIVO, Private Label and branded products)Plastics | – | – | – | – | Bentonite |
1 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Laser Profile Measurement System (Ferrotron, for steel mill operations) | Minteq Ferrotron (MTI) | – | – | – | – |
Additional services
Quality & Testing
MTI operates global laboratory and testing facilities, including Sand Laboratory Services for the foundry industry and analytical testing services (Applied Analytical & Testing Services) at CETCO. 92% of locations operate injury-free; the company-wide QEHS framework covers environmental protection, safety and quality.
| Evidence | New York (Headquarters) |
|---|---|
| QEHS Policy (Documented) | |
| Sand Laboratory Services | |
| Applied Analytical & Testing Services |
History
- 1927
American Colloid Company serves the metalcasting industry – establishing the standard for foundry-grade bentonite and green sand molding compounds.
- 1963
Start of CETCO Waterproofing products; since then more than 1 billion square feet have been installed.
- 1965
Ameri-Co Carriers begins transportation services.
- 1985
Ameri-Co Logistics founded as a truckload broker.
- 2016
Douglas T. Dietrich becomes CEO of MTI (December).
- 2021
Douglas T. Dietrich becomes Chairman of the Board (March).