Nepheline

Nepheline is a naturally occurring tectosilicate mineral that contains no free silica . Its chemical formula is Na₃KAl₄Si₄O₁₆, with a hexagonal crystal structure, primarily found in alkaline rocks associated with syenite. It typically appears colorless or white, and is characterized by high aluminum, low silica, and high alkali content (Na₂O + K₂O). Widely used in glass and ceramic manufacturing, it can also serve as a raw material for aluminum extraction. Similar to feldspar but with lower silica content, nepheline plays a critical role across multiple industrial sectors, especially in green manufacturing, energy conservation, emissions reduction, and performance enhancement.

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Description of Nepheline

Henan Ankai New Materials Co.,Ltd（LSAK Feldspar） is a professional Nepheline Manufacturer that specializes in providing raw materials for the Ceramics, Glass, Coatings Material, Plastic, Refractory, and also applicable in various other industries, including paints, rubber, soap, construction materials, water filtration, abrasives, and fertilizers. Our nepheline production facility covers an area of 45,000 square meters and is equipped with state-of-the-art production equipment, a factory laboratory, and a testing center. This ensures that we can deliver high-quality nepheline powder to our customers. As one of the top nepheline suppliers in China, we have our own nepheline mines, strict quality control, timely delivery, and professional services. We serve customers in over 200 countries, including Vietnam, the Philippines, Russia, Italy, Mexico, the United States, Morocco, and more.

•Nepheline Powder Forms:

200 Mesh

• Nepheline Powder Package:

1000-1300kg per bags.

Advantages of Nepheline Powder

• High Alkali Metal Content:Na₂O + K₂O ≥ 14% – promotes melting and reduces energy consumption.

• High Alumina Content:Al₂O₃ ≈ 21–25% – enhances the durability of glass and ceramics.

• Low Iron Content:Fe₂O₃ < 0.05% (ideally < 0.1%) – ensures colorless, high-brightness products.

• Low Impurities:CaO, MgO, TiO₂ < 0.5% – minimizes interference during processing.

• No Crystalline Silica: Eliminates silica dust risk, ensuring compliance with environmental and health standards (e.g., OSHA/REACH).

Parameter of Nepheline Powder

	Chemical Analysis
Product Code	SiO2	Al2O3	Fe2O3	TiO2	CaO	MgO	Na2O	K2O	L.O.I.
	%	%	%	%	%	%	%	%	%
LSAK Nepheline	61.37	21.24	0.05	0.01	0.42	0.04	8.28	5.59	2.72

Applications of Nepheline

Ceramics Industry:

• Ceramic Glazes: Nepheline is mainly used as a flux in ceramic glazes. It can effectively reduce the melting temperature of glazes and promote the smooth flow of glaze layers during firing. In addition, the Nepheline oxide (Na₂O) contained in Nepheline can enhance the gloss and adhesion of the glaze surface, while improving the expansion coefficient of the glaze and reducing the problem of glaze cracking.

• Ceramic Bodies: Nepheline is incorporated into ceramic bodies to improve their strength and durability. By acting as a flux, it enables ceramic materials to vitrify at lower temperatures, resulting in stronger and less porous ceramics. This is especially important for items like sanitaryware and stoneware.

• Sanitary Ware: As an efficient flux, Nepheline can reduce the melting point of glaze, optimize the firing temperature, and promote the uniform flow of the glaze layer to form a smooth and shiny surface. At the same time, the Nepheline content helps to regulate the expansion coefficient, improve the heat resistance and crack resistance of the product, and ensure the durability and aesthetics of sanitary ware.

• Sintered Stone: In the production of sintered stone, Nepheline can reduce the firing temperature, promote the densification of the green body, and improve the sintering efficiency. Its alumina component enhances the hardness and scratch resistance of the plate, which helps to form larger-sized, uniform-structured high-performance ceramic plates, which are widely used in high-traffic areas and kitchen countertops.

Glass Industry:

The glass industry uses Nepheline as a flux to lower the melting point of silica, ensuring high-quality, impurity-free glass products with superior transparency. Environmentally friendly, Nepheline outperforms soda ash and aluminum oxide by emitting less carbon dioxide and waste. Its stable pricing, unaffected by futures trading and corporate control, makes it more economical than soda ash and aluminum oxide.

Glass Fiber Industry:

As a flux, Nephelinecan effectively reduce the melting temperature of glass, reduce energy consumption, improve melting stability, avoid wire breakage during the drawing process, and ensure continuous and efficient production. At the same time, its alumina component enhances the strength and durability of the fiber, and is an important raw material for manufacturing high-performance glass fiber.

Coatings Industry:

Nepheline is employed in the coatings industry to improve the quality of paints and coatings. It serves as a filler and extender, enhancing texture and coverage while increasing the durability and resistance of coatings. This results in long-lasting and aesthetically pleasing finishes on various surfaces.

Refractory Industry:

Nepheline is integral to the production of refractory materials. Its high alumina content imparts excellent heat resistance, making it a key component in refractory ceramics, bricks, and castables. Used in furnaces, kilns, and other high-temperature applications, Nepheline enhances the structural integrity and thermal stability of refractory products.

Plastics and Rubber Industry:

In the plastics and rubber industry, Nepheline acts as a filler, reinforcing these materials. It enhances their mechanical properties, making them more robust and resistant to wear and tear. This is particularly valuable in the production of items like automotive components and consumer goods.

Abrasives Industry:

Nepheline is utilized in the abrasives industry for its hardness and abrasive qualities. It is used to manufacture abrasive materials and tools, which are essential for tasks like metalworking and stone polishing. These abrasives help shape and smooth surfaces efficiently and accurately.

Other Applications:

Nepheline also finds utility in soap manufacturing, grinding tools, welding electrodes, sintered stone and other industries. In welding electrode coatings, Nepheline can act as an arc stabilizer and weld pool protection agent.

Click Here To Get Nepheline Chemical Composition Report

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100 Mesh Nepheline Powder

200 Mesh Nepheline Powder

325 Mesh Nepheline Powder