RuiShi Group | Premium Fused & Sintered Alumina & Refractory Materials

About RuiShi Group

RuiShi Group is a trusted manufacturer specializing in high-quality fused and sintered alumina products, calcium aluminates, and advanced refractory materials. With years of expertise in industrial smelting and material science, we deliver reliable, high-performance solutions for abrasive, metallurgical, and construction industries.

Our commitment to quality, innovation, and customer satisfaction has positioned us as a preferred supplier across global markets. From raw material selection to final packaging, every step is monitored for consistency and excellence.

20+

Years Experience

10+

Products

50+

Global Clients

Our Products

High-performance industrial materials engineered for durability, heat resistance, and chemical stability.

Brown Fused Alumina

High-quality abrasive grade bauxite smelted at 2250°C. High purity, magnetic impurity removal, refractoriness over 1850°C. Ideal for grinding, sandblasting, and refractory linings.

Smelted at 2250°C
High refractoriness
Magnetic impurity removal

White Fused Alumina

High-purity aluminum oxide powder fused and crystallized. Excellent self-sharpening, acid resistance, and thermal stability. Used in precision abrasives and ceramics.

High purity
Self-sharpening
Acid & heat resistant

Amorphous Calcium Aluminate

Non-crystalline calcium aluminate used as a fast-setting accelerator in cement and concrete. Light gray-green powder with rapid setting properties.

Fast-setting additive
Concrete & cement use
Non-crystalline structure

Fused Calcium Aluminate

Also known as refining slag or synthetic slag. Used in steelmaking to remove sulfur, oxygen, and other impurities. High melting point and stability.

Steel refining
Desulfurization
High purity slag

Sintered Calcium Aluminate

Uniform composition, low melting point, fast melting speed. Ideal for steel refining and furnace treatment to reduce smelting time.

Fast melting
Uniform composition
Smelting efficiency

Ceramsite (Foundry Sand)

Also known as ceramic sand or fused ceramic. High thermal stability and low thermal expansion. Used in precision casting and foundry applications.

Foundry sand
Low expansion
Reusable

Fused Mullite

High heat resistance raw material. Available in high-purity and standard grades. Used in kiln linings, refractory bricks, and high-temperature insulation.

High heat resistance
Refractory applications
Thermal stability

Zirconia Fused Alumina

Produced by fusing aluminum, zirconium, and additives at over 2250°C. Exceptional toughness and wear resistance. Ideal for high-stress abrasive applications.

Zirconium-enhanced
High toughness
Over 2250°C smelting

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Corundum Smelting Process

Precision engineering from raw materials to final product — every step ensures quality and consistency.

Mixing

Raw materials proportionately mixed and fed into the electric arc furnace.

Smelting

Over 20 hours at 2250°C in electric arc furnace for complete refining.

Cooling

Natural and water cooling to form high-quality corundum blocks.

Grading

Qualified corundum blocks are selected and categorized.

Crushing

Crushed into various particle sizes using advanced machinery.

Separation

Precise separation into different grain sizes.

Purification

Magnetic separation, washing, drying, and pickling to remove impurities.

Testing

Rigorous lab testing for quality assurance and consistency.

Milling

Raymond Mill used to produce fine corundum powder.

Packaging

Final packaging by grain size for shipment and distribution.

Frequently Asked Questions

Get answers to common inquiries about our products and services.

What is the difference between fused and sintered calcium aluminate?

Fused calcium aluminate is produced by melting raw materials at high temperatures, resulting in a dense, glassy structure. Sintered calcium aluminate is formed through solid-state reactions at lower temperatures, offering faster melting and uniform composition in steel refining.

Can your products be customized for specific industrial needs?

Yes, RuiShi Group offers customization in grain size, purity levels, and packaging based on client requirements. Contact us for tailored solutions.

What industries use your fused alumina products?

Our fused alumina is used in abrasives, refractories, ceramics, steelmaking, foundry, and construction industries due to its hardness, thermal stability, and chemical resistance.

How do you ensure product quality?

We follow a strict 11-step production process including magnetic separation, lab testing, and purification. Each batch is tested for consistency, purity, and performance.

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Advanced Refractory & Abrasive Materials