Ceramic frit is a glass made on purpose as a glaze ingredient. Raw materials are melted together in a furnace, the melt is quenched in water or on cooled rollers so it shatters into flakes or granules, and those pieces are later milled into glaze.
The main buyers are tile factories, sanitaryware makers, glaze and colour producers, and makers of enamelled steel and other coated products.
Why frit exists
Many glaze materials are soluble in water or toxic in raw form. Some, such as borax and soda ash, would dissolve in the glaze slurry and cause defects. Melting them into a glass first locks them into an insoluble, stable form.
Fritting also gives a glaze that melts more evenly and at a known temperature. That matters in fast tile kilns, where the firing cycle is short and the glaze has little time to melt and smooth out.
How frit is made
- Raw materials such as quartz, feldspar, boron compounds, zinc oxide, zirconium silicate and others are weighed to a recipe.
- The batch is melted in a continuous furnace at high temperature until it becomes a uniform glass.
- The melt runs out into water or between cooled rollers, which shatters it into small, brittle pieces.
- The frit is dried, checked and packed, usually as granules or flakes, for the buyer to mill.
Who buys frit
Tile factories are the biggest users. They mill frit with clay, other minerals and colours to make glazes and engobes, the layers explained in what ceramic glazes and engobes are. Many Morbi plants buy frit from local makers rather than producing it themselves.
Sanitaryware makers buy frit for the glaze on WCs and basins. Glaze and colour companies buy it to make ready-to-use glazes. Enamel makers use special frits for coating steel and cast iron. Glass decoration and some construction products use frits too.
Importers usually buy frit to resupply tile, sanitaryware or enamel factories in their own country, or to stock it for local ceramic plants without a frit furnace.
What a buyer should know
Frits are sold to a technical specification, not by look. Two frits that look alike can melt at different temperatures or give different gloss. A frit must suit the buyer's body, kiln and firing cycle.
That is why the first order always starts with a sample tested in the end user's own glaze and kiln. The main families are described in what types of frit are made in Morbi, and the checks in what tests apply to frits and glazes.
For customs, glass frit is usually classified under HS heading 3207, which also covers prepared glazes and engobes. Confirm the exact tariff line and any local rules on chemicals with your customs broker.
Next step
We can find frit makers in and around Morbi, check that they melt their own frit, and have samples tested before you order. To start, book a free sourcing review.