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Melting control, stability and compatibility in cooking

Ceramic frits

Ceramic frits formulated to control the fusion, stability and behavior of the glaze, adapted to the technical conditions of each production process.

The technical basis of the enameling system

Fried

Frits are a fundamental component of glaze, responsible for regulating fusion, the formation of the glassy phase, and the system's behavior during firing. At Kerafrit, we develop frits with compositions tailored to provide thermal stability, chemical compatibility, and control over the final finish.

We work with frits adapted to different temperature ranges, types of ceramic paste, and firing curves, adjusting the coefficient of expansion, viscosity, and reactivity. This approach allows us to offer reliable technical solutions designed to integrate seamlessly into each client's actual production conditions.

Fusion control

They regulate the temperature and behavior of the enamel during firing.

System compatibility

Adjusted to paste, slip and glaze for a stable assembly.

Thermal stability

Controlled behavior in demanding and repetitive industrial cycles.

Adaptation to each factory

Formulations tailored to the actual production process, technology, and parameters.

Technologies

Wall Double Fast Firing

Transparent/Opaque/Matte/Gloss

Wall Single Firing (Porosa)

Transparent/Opaque/Matte/Gloss

Floor Single Firing

Transparent/Opaque/Matte/Gloss

Gres/Porcelain

Transparent/Opaque/Matte/Gloss

Engobe

Transparent/Opaque/Matte/Gloss

Specials

Transparent/Opaque/Matte/Gloss

Technical specifications

Download PDF sheet

Medium particle size (D50)

10 – 25 µm (depending on reference and application)

Particle size distribution (D90)

≤ 45 µm (fine grinding for wet applications)

Supply format

Micronized / Granulated (according to customer process)

Coefficient of thermal expansion (CTE 40–400 °C)

[5.0 – 11] ×10⁻⁶ K⁻¹ (adjustable to paste and system)

Softening temperature (Tr)

650 – 850 °C (depending on the type of fry)

Glass transition temperature (Tg)

500 – 650 °C

Recommended cooking range

950 – 1250 °C (low and high temperature)

Viscosity of the melt

Medium / Low (depending on formulation and end use)

Lead (Pb) content

Lead-free (no added Pb)

Chemical resistance (ISO 10545-13)

GA / GLA / GHA (depending on system and finish)

System compatibility

Glazes, engobes, granules and digital decoration

Production stability

High batch-to-batch reproducibility

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Frequently Asked Questions

Yes. We adjust the composition of the frit to work correctly, according to the customer's process.

Our ceramic frits are manufactured under strict quality control, guaranteeing stability, homogeneity, and reproducibility between batches. We monitor the composition and melting behavior of each production run, conducting laboratory tests and application trials to ensure consistent performance in industrial processes

A custom-made fryer is specifically tailored to the customer's pasta and cooking curve, improving compatibility and performance.

Yes. We adjust reactivity and fusion to adapt to short cycles without compromising stability or final quality.

Request information or specialized technical advice

Contact us today and discover how we can make your project an exclusive, custom-designed work, full of personality.

Everything you need to know about ceramic frits

Fundamental vitreous material for the development of stable glazes.

Ceramic frits are insoluble vitreous compounds, obtained through high-temperature melting and subsequent rapid cooling of precise mixtures of raw materials. In the ceramic industry, their use is the central pillar for the formulation of glazes, engobes, and grits. By pre-melting the inorganic components, unstable chemical reactions and gas release during tile firing are eliminated, guaranteeing completely predictable thermal behavior free of surface defects (such as pinholes or bubbles) in fast production cycles.

At Kerafrit, we are specialists in the formulation and manufacture of ceramic frits, developing an extensive range of fluxing, opaque, transparent, and matte solutions. We design our frits to adapt exactly to the firing curves of any technology, from porous single-firing to technical porcelain. Their perfect integration ensures optimal rheological stability on glazing lines, allowing factories to maximize their yield and obtain finishes of the highest technical quality.