Feldspar
The feldspar group minerals are the most abundant minerals in the earth's crust. Feldspars are minerals of everyday use and the end products are all around us. High concentrations of alumina (Al2O3) and alkalis (K2O and Na2O) together with low levels of trace elements such as iron oxide (Fe2O3) define a high quality feldspar product. In a diverse set of applications, alumina adds hardness, durability and resistance to chemical corrosion while the alkalis act as a flux lowering the temperature of a ceramic body during firing. Its physical properties of dispersibility, weatherability, scrub resistance, and mildew resistance make feldspar attractive to the coatings industry.i-minerals has two types of feldspar: Sodium feldspar (Na-spar) and Potassium feldspar (K-spar). These products are offered in a variety of grinds to meet the requirements of a given industry.
Uses
Producers of glass, ceramics and paint are the primary users of feldspar. This spans a spectrum of industries that includes tableware, sanitary ware, fiberglass, windows, art glass, paint and others. Some applications, such as sanitary ware may use one type of feldspar in the body of a product (e.g. a sink) and another type of feldspar for the glaze. Fiberglass insulation is a large consumer of feldspar products. In general the fiberglass and container glass manufacturers prefer Na-spar. The ceramics industry uses both, but primarily K-spar in the glaze. The paint industries can use an ultra fine grid variety of either feldspar.
Data Sheets
- MC 30-K Feldspar
- MC 30-Na Feldspar
- MC 200-K Feldspar
- MC 200-Na Feldspar
- MC 325-K Feldspar
- MC 625-K Feldspar