The Global High Purity Fused Calcium Oxide Market was valued at USD 87.12 Million in 2025 and is projected to reach USD 139 Million by 2034, growing at a Compound Annual Growth Rate (CAGR) of 7.0% during the forecast period (2026–2034). This robust growth is fueled by escalating demand from the aerospace and medical sectors for high-performance refractory linings used in the melting of reactive metals like titanium and zirconium, alongside advancements in material science pushing the boundaries of purity and performance.

As high-tech manufacturing pivots toward more demanding applications requiring unparalleled material stability, the focus intensifies on the specialized producers of high-purity fused calcium oxide. These companies master the complex electric arc furnace technology needed to create this critical material. In this blog, we profile the Top 10 Companies in the High Purity Fused Calcium Oxide Industry—a group of global chemical and refractory specialists driving innovation in advanced material supply chains.

Download FREE Sample Report:
High Purity Fused Calcium Oxide Market – View in Detailed Research Report

---

🔟 1. Tateho Chemical Industries, Ltd.

Headquarters: Ako, Hyogo, Japan
Key Offering: High Purity Fused Calcium Oxide (Various grades including >99.5% CaO)

Tateho Chemical is a globally recognized leader in the production of fused minerals, including high-purity fused calcium oxide. The company leverages advanced electric arc furnace technology to produce materials with exceptional density and chemical stability, making them a preferred supplier for critical applications in aerospace and specialty steel.

Innovation and Capacity:

• Pioneer in electric arc fusion technology for mineral processing

• Strategic focus on high-margin, high-purity specialty chemicals

• Global distribution network serving leading refractory manufacturers

---

9️⃣ 2. Foseco (Vesuvius plc)

Headquarters: London, United Kingdom
Key Offering: Foundry consumables, Refractory coatings, High-performance additives including fused calcium oxide

Foseco, a division of Vesuvius plc, is a major global supplier of consumables to the foundry and steel industries. Their expertise extends to providing high-purity materials like fused calcium oxide, which are essential for creating advanced refractory linings that withstand extreme temperatures in metal processing.

Innovation and Capacity:

• Integrated supply chain from raw material to finished refractory product

• Strong R&D focus on improving metal melting efficiency and lining longevity

---

8️⃣ 3. Denka Company, Limited

Headquarters: Chuo-ku, Tokyo, Japan
Key Offering: Denka Fused Lime (High Purity CaO), Electronic materials, Performance polymers

Denka Company is a diversified chemical giant with a significant presence in advanced materials. Its high-purity fused calcium oxide, marketed as Denka Fused Lime, is renowned for its low reactivity and high density, making it ideal for demanding applications in both industrial and electronic sectors.

Innovation and Capacity:

• Production of ultra-high purity grades (>99.5% CaO) for sensitive applications

• Investment in capacity expansion to meet growing global demand

---

7️⃣ 4. RHI Magnesita

Headquarters: Vienna, Austria
Key Offering: Comprehensive refractory solutions, Basic refractory products including fused calcium oxide aggregates

As the world’s leading supplier of refractory products, RHI Magnesita’s portfolio includes high-performance basic refractories. The company produces and utilizes high-purity fused calcium oxide as a critical raw material in its refractory mixes, serving the most challenging high-temperature processes in the steel and non-ferrous metals industries.

Innovation and Capacity:

• Vertical integration, controlling the supply of key raw materials like fused calcium oxide

• Global production footprint ensuring supply security for major industrial clients

Download FREE Sample Report:
High Purity Fused Calcium Oxide Market – View in Detailed Research Report

---

6️⃣ 5. Krosaki Harima Corporation

Headquarters: Kitakyushu, Fukuoka, Japan
Key Offering: Refractory products for iron, steel, and non-ferrous industries, Fused lime products

Krosaki Harima is a premier Japanese manufacturer of refractory products. The company has deep expertise in basic refractories and produces high-quality fused calcium oxide, which is integral to its product lines designed for severe service conditions, such as in secondary steel refining.

Innovation and Capacity:

• Technological leadership in refractory solutions for ladle furnaces and converters

• Focus on product durability and performance enhancement through material purity

---

5️⃣ 6. Washington Mills

Headquarters: North Grafton, Massachusetts, USA
Key Offering: Fused minerals & abrasives, including fused calcium oxide, Fused alumina, Silicon carbide

Washington Mills is a key North American producer of fused minerals. The company’s high-purity fused calcium oxide is manufactured to exacting standards, serving niche markets that require materials with minimal impurities for specialized refractory and chemical applications.

Innovation and Capacity:

• Specialization in electric fusion of a wide range of mineral products

• Strong presence in the North American aerospace and defense supply chain

---

4️⃣ 7. Allied Mineral Products, Inc.

Headquarters: Columbus, Ohio, USA
Key Offering: Monolithic refractories, Precast shapes, High-purity raw materials including calcium oxide

Allied Mineral Products is a global manufacturer of monolithic refractory products. The company sources and utilizes high-purity fused calcium oxide to formulate advanced refractory linings, particularly for non-ferrous metal applications where chemical inertness is paramount.

Innovation and Capacity:

• Expertise in custom refractory formulations for specific customer processes

• Strategic global manufacturing locations to serve international markets

---

3️⃣ 8. Yingkou Jinlong Refractories Group Co., Ltd.

Headquarters: Yingkou, Liaoning, China
Key Offering: Magnesia-based refractories, Fused magnesia, Fused calcium oxide

As a major Chinese producer of refractory raw materials, Yingkou Jinlong Refractories Group has a significant production capacity for fused minerals. The company is a key supplier of fused calcium oxide within Asia, supporting the region’s growing steel and metalworking industries.

Innovation and Capacity:

• Large-scale integrated production facilities for basic refractory raw materials

• Focus on cost-competitive production to serve volume-driven markets

---

2️⃣ 9. Calcis AG

Headquarters: Sissach, Switzerland
Key Offering: High-purity calcium carbonate and derived products, Specialty lime products

Calcis AG specializes in producing high-purity calcium-based products from its own mineral deposits. While its core focus is on calcium carbonate, the company’s expertise in purification and processing positions it as a notable player in the high-purity lime market, including potential pathways to fused calcium oxide.

Innovation and Capacity:

• Control over high-purity limestone deposits in Europe

• Investment in processing technologies to achieve superior product purity

---

1️⃣ 10. Lhoist Group

Headquarters: Brussels, Belgium
Key Offering: Lime, dolime, and minerals, High reactivity and high purity lime products

Lhoist is one of the world’s largest producers of lime and dolime. The group’s extensive research and development capabilities enable it to produce high-purity lime products for specialized applications. Its global scale and technical expertise make it a significant, though sometimes indirect, force in the supply chain for high-performance calcium-based materials.

Innovation and Capacity:

• World’s leading lime producer with vast resources and production capacity

• Dedicated R&D centers focusing on developing new applications for lime products

Get Full Report Here:
High Purity Fused Calcium Oxide Market – View in Detailed Research Report

---

🌍 Outlook: The Future of High Purity Fused Calcium Oxide Is Driven by Advanced Technology

The high purity fused calcium oxide market is experiencing a significant transformation. While traditional industrial applications continue to form the volume base, the industry is increasingly driven by the stringent requirements of advanced manufacturing sectors like aerospace, medical implants, and electronics, where material performance is non-negotiable.

📈 Key Trends Shaping the Market:

• Increasing demand for titanium and zirconium alloys in aerospace and medical implant manufacturing

• Stringent quality control and traceability requirements from end-user industries

• Technological advancements in electric arc furnace design for higher purity and efficiency

• Growth in Asia-Pacific’s high-tech manufacturing base driving regional market expansion

Get Full Report Here:
High Purity Fused Calcium Oxide Market – View in Detailed Research Report

The companies listed above are not only supplying a critical industrial material—they are enabling the next generation of high-performance manufacturing across the globe.