Nepheline syenite is an igneous rock that forms when molten magma cools in the lack of silica, resulting in the absence of silica in the rock. It is comparable in appearance to granite and is made up of three types of minerals: the microcline form of feldspar, the albite form of feldspar, and nepheline. It is a type of feldspar that occurs in the microcline form.
Microline makes up 25 percent of the total, nepheline 22 percent, and albite 55 percent of the total, according to the manufacturer. Alumina derived from feldspar is used in glassmaking to improve durability, product hardness, and resistance to chemical corrosion.
Feldspar is employed as a flux in ceramics, reducing the vitrifying temperature of a ceramic body during fire and resulting in the formation of a glassy phase. Nepheline syenite is used in the production of glass and ceramics because it contains alkalis that work as a flux to reduce the melting temperature of ceramic mixtures and glass, resulting in quicker melting and fuel savings.
Glass is strengthened in scratch and break resistance because of the presence of alumina in the composition of nepheline syenite. This type of syenite has a high strength as well as great weather-resistant qualities, making it an excellent choice for the building sector.
Through its capacity to reduce the viscosity of glass batch mixtures, nepheline syenite improves the workability of the glass batch while also imparting a specific toughness to the glass, which makes the glass more resistant to breaking.
The presence of alumina in nepheline syenite improves the material’s resistance to breaking and scratching, as well as its chemical durability and thermal durability. The low iron concentration of the powdered substance ensures that it retains its whiteness when used for clear glass and other end uses such as extender pigments, fibreglass, and fillers, among other applications.
Khibiny Complex in Russia; Ontario, United States; Norway; Canaan, Brazil; Quebec, Canada; Gardar Alkaline Province in Greenland; Loch Borolan (Borralan) in Scotland; Iivaara Complex in Finland; Koga Complex in Pakistan; Sichuan, China; Turkey; Saudi Arabia; Egypt; Norra Karr in Sweden; and Mexico are among the locations where significant deposits of nepheline syenite have been discovered.
The demand for nepheline syenite is predicted to rise as a result of increased demand from important markets such as glass, filters, adhesives, and ceramics, among others. The increased demand for nepheline syenite from emerging markets in Asia Pacific and Latin America is also predicted to contribute to the increase in demand for the chemical. Additional reasons that are predicted to boost the market include environmental restrictions and compliance with hygiene requirements, among others. Price fluctuations in raw materials and the availability of replacements, on the other hand, are projected to restrain market expansion.