The Application of Nepheline

It is mainly produced in alkaline intrusive rocks, volcanic rocks and pegmatite related to syenite. It is found in Norway, Sweden, the Kola Peninsula and Mount Ilmen in Russia, Kenya and Romania. It is mainly used in the glass and ceramic industry, and can also be used as a raw material for refining aluminum.

Nepheline used as raw material for billet in addition to energy saving, has the following unique role. We believe that these unique functions help to improve the grade and grade of Chinese ceramic products.

The special role of nepheline in glazed brick body: glazed brick due to low firing temperature, low porcelain body temperature and high water absorption, easy to cause the crystal body expansion coefficient is too low, enamel cracking and body moisture absorption expansion, body rebound and enamel peeling fatal weaknesses. The use of nepheline powder in glazed brick body is helpful to improve the degree of porcelain and the expansion coefficient of low temperature brick body. Strengthen the bonding degree of blank glaze, broaden the use range of glazed tile, increase sales and so on.

The unique role of nepheline in wear-resistant brick and polished brick body: wear-resistant brick and polished brick belong to vitrified brick. The addition of nepheline powder has the following important functions: a. Improve the mass transfer and heat transfer rate, contribute to the expulsion of water and burning loss and the diffusion of heat, contribute to rapid drying and rapid burning; b. Relatively high aluminum content, help to broaden the firing temperature range, reduce deformation and other quality defects; c. The high degree of mutual fusion of potassium and sodium makes the billet translucent, so that wear-resistant bricks and polished bricks have a unique texture; d. Potassium and sodium are beneficial to body coloring, can enrich the product variety, reduce the amount of color; e. nepheline can also overcome the quality defects of polished brick rebound after throwing.

The unique role of nepheline in the external wall brick body: nepheline in the external wall brick body also has the following unique roles: a, the introduction of nepheline, talc, wollatonite of the external wall brick body, in the firing process will produce a self-releasing glaze phenomenon, this self-releasing glaze is matte transparent. Using the exterior wall brick to decorate the wall has a unique texture and light sense; b, the use of nephelinite-infused formula to produce cultural stone for external wall bricks, more like natural granite, aplite and diabase.

The unique role of nepheline in sanitary ware body: traditional sanitary ware dry cycle is long, burning cycle is long, burning temperature is high. The addition of nepheline can improve the specific gravity and flow rate of mud, accelerate the absorption of water by gypsum, as well as the expulsion of water, and improve the stiffness of the body, nepheline also has a unique role in reducing the firing temperature of sanitary ware and the transparency of the porcelain body during the firing cycle.

The unique role of nepheline in high-grade daily porcelain: high-grade talc porcelain and ashes China are diplomatic porcelain designated by the General Office of the Central Committee, nepheline helps MgO, P2O5 dissolve and disperse in the glass phase, making its crystals small, so as to achieve high transmittance, so that the appearance is beautiful and rich in content.

The role of nepheline in low temperature glaze: the combination of nepheline with boromite, lead zinc ore and lithium feldspar at low temperature can prepare a pure 1120 ~ 1180℃ firing into various glazes, and can make the white glaze delicate and soft, rich texture.

The application of nepheline in the production of frit: using nepheline instead of potassium and albite to fire frit can use less or no soda saltpeter, thus reducing the corrosion of soda saltpeter on the refractory material of the furnace wall. In addition, the emission of toxic gases such as NO can be avoided.

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