The Global Calcined Diatomite Market was valued at USD 548 million in 2023 and is projected to reach USD 850.13 million by 2032, growing at a Compound Annual Growth Rate (CAGR) of 5.00% during the forecast period (2024–2032). North America accounted for USD 155.29 million in 2023 with a 4.29% CAGR. This growth is driven by increasing demand for advanced filtration systems, sustainable construction materials, and specialty agricultural solutions.

Calcined diatomite, a thermally processed form of diatomaceous earth, offers exceptional filtration efficiency, thermal stability, and absorbency – making it indispensable across water treatment, food processing, pharmaceuticals, and industrial applications. In this analysis, we examine the Top 10 Calcined Diatomite Producers who are driving technological innovation and sustainable mining practices worldwide.

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🔟 10. Showa Chemical Industry

Headquarters: Tokyo, Japan
Key Offering: Pharmaceutical-grade calcined diatomite

Specializing in ultra-high purity diatomite products, Showa Chemical supplies Japanese and Asian pharmaceutical manufacturers with filtration media meeting rigorous JP/USP standards.

Technical Capabilities:

• Impurity control below 0.3%
• Sterilized processing infrastructure

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9️⃣ 9. Diatomite CJSC

Headquarters: Yerevan, Armenia
Key Offering: Construction-grade calcined products

As the dominant supplier to CIS construction markets, Diatomite CJSC provides thermal insulation additives for cement and plaster applications across Russia and neighboring countries.

Regional Footprint:

• 65% market share in Caucasus region
• Soviet-era mining operations with modern upgrades

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8️⃣ 8. Dicaperl Minerals

Headquarters: Texas, USA
Key Offering: Surface-treated calcined diatomite

Dicaperl develops specialty polymer-modified diatomite products that enhance performance in paints, plastics, and rubber applications through superior particle dispersion.

Product Innovations:

• Proprietary silane coupling agents
• Low-dust formulations for worker safety

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7️⃣ 7. EP Minerals

Headquarters: Nevada, USA
Key Offering: Celite® brand filtration media

EP Minerals, a U.S. Silica company, operates large-scale diatomite mines and processing facilities in Nevada, supplying food, beverage and pharmaceutical markets globally.

Quality Certifications:

• FDA GRAS compliance
• ISO 9001:2015 certified production

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6️⃣ 6. CECA (Arkema Group)

Headquarters: Paris, France
Key Offering: Catalytic-grade calcined diatomite

This Arkema subsidiary specializes in high-performance diatomite catalysts and absorbents for petrochemical refining processes across Europe, Middle East and Africa.

Technical Advantages:

• Tailored pore size distribution
• Enhanced thermal and chemical resistance

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5️⃣ 5. Domolin

Headquarters: Denmark
Key Offering: High-flow filtration media

Domolin’s proprietary calcined diatomite products enable 20-30% faster flow rates compared to conventional filtration aids, significantly reducing energy consumption in beverage and chemical processing.

Performance Benefits:

• Reduced filtration cycle times
• Lower operational costs

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4️⃣ 4. American Diatomite

Headquarters: California, USA
Key Offering: Industrial absorbents

Operating Nevada’s second-largest diatomite mine, American Diatomite manufactures high-absorption calcined products for oil spill cleanup and hazardous material containment.

Environmental Leadership:

• Closed-loop water recycling
• Land rehabilitation programs

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3️⃣ 3. Diatomite Direct

Headquarters: Nevada, USA
Key Offering: Food-processing diatomite

This specialty supplier provides NSF-certified calcined diatomite filtration aids to North American breweries, wineries, and food processing facilities.

Quality Assurance:

• Kosher and Halal certification
• Microbiological control protocols

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2️⃣ 2. Chanye Minerals

Headquarters: Linjiang, China
Key Offering: Agricultural and construction grades

As China’s leading diatomite processor, Chanye supplies flux-calcined products for soil conditioning and lightweight construction aggregates across Asian markets.

Production Capacity:

• Annual output exceeding 200,000 metric tons
• Modern rotary kiln calcination facilities

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1️⃣ 1. Imerys

Headquarters: Paris, France
Key Offering: High-purity calcined diatomite

The global market leader with operations across four continents, Imerys supplies approximately 35% of worldwide calcined diatomite demand through its advanced mining and processing network.

Competitive Advantages:

• Proprietary flash calcination technology
• Over 500 process patents
• Global regulatory approvals including USP/EP

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🔮 Market Outlook: Advanced Materials & Sustainability Drive Growth

The calcined diatomite industry is evolving through technological advancements and environmental initiatives that expand applications while reducing ecological impact.

📈 Key Industry Developments:

• High-efficiency water filtration for municipal treatment plants
• Specialty grades for pharmaceutical drug delivery systems
• Circular economy programs for spent filtration media
• Low-carbon calcination processes

Get Full Report Here: Calcined Diatomite Market – View in Detailed Research Report

These industry leaders are not just supplying raw materials – they’re enabling cleaner water, safer food, and more efficient industrial processes through innovative diatomite solutions.