This paper presents the results on the properties of glass frits obtained from some Nigerian raw materials. Nigerian raw materials were investigated to establish their characteristics. Physical, chemical and mineralogical characteristics were determined using X-ray diffraction, thermodiferential - thermogravimetrie, infrared methods.
Mixtures of the sand and feldspar and other chemicals substances were used to obtain several glass frits compositions by conventional melting procedure. Oxide compositions of the ground coats gave direct experimental evidence of the glass frits.
Granulometry analysis and high temperature microscopy among other investigations were carried out to examine and identify the characteristics of the glass frits. A correlation was proven between the properties of the raw materials and the frits produced.
The frits were prepared by wet and dry method of applications and applied on steel substrates – OL 140, Romanian standard, and sintered in a furnace at temperatures ranges 780-9000C. Visual and microscopic observations of the double faced enameled samples show that glossy, impervious, defect free surfaces were made.
Nigerian sand and feldspar were found to be suitable for the production of glass frits for metal coating.