Pigments Powder for Ceramic Manufacturing

Supplier of Durable Ceramic Colorants

Deqing Demi Pigment Technology Co., Ltd. provides high-stability inorganic powders for the ceramic and tile industries. Our manufacturing process for ceramic-grade pigments involves precise calcination to ensure that the metal oxides are in their most stable phase. We work with manufacturers of sanitaryware, tableware, and architectural ceramics, providing them with the coloring solutions needed to achieve consistent results in both oxidized and reduced firing atmospheres. Our pigments are a reliable choice for achieving deep, earthy tones and technical stability.

Ceramic Industry Applications

• Ceramic Tiles: Mass coloration for porcelain and terracotta tiles.
• Glaze Coloring: Pigmentation for glossy, matte, and crystalline glazes.
• Sanitaryware: Durable colorants for toilets, sinks, and bathroom fixtures.
• Tableware: Food-safe inorganic pigments for stoneware and porcelain.

Ceramic Technical Specifications

Core Characteristics for Firing

• Thermal Phase Stability: Retains original crystal structure even at extreme temperatures.
• Glaze Compatibility: Does not cause "pinholing" or "crawling" in the glaze layer.
• High Purity: Low levels of reactive impurities ensure no unwanted color shifts during the soak time.
• Homogeneous Particle Size: Ensures even color distribution without spotting on the ceramic surface.

• Q: Can these pigments be used for "body staining"?

  A: Yes, these pigments are designed for both body staining (integral color) and glaze coloration, offering high efficiency in both applications.

• Q: Do the colors change between the kiln and the finished product?

  A: All ceramic materials undergo some change during firing. However, our calcined grades are designed to minimize this shift, providing the most predictable outcome in the industry.

Ceramic-Specific Manufacturing

Our ceramic pigments undergo a high-intensity calcination process in rotary kilns, which "fixes" the color and ensures it is ready for the high-temperature environment of ceramic production.

Matching Services: We offer a color matching service where we fire a client's glaze or body recipe in our test kilns to provide a finished ceramic sample, ensuring the pigment performs as expected under their specific firing curve.

Managing Chromaticity in the Melt

The color of a fired ceramic piece is the result of the pigment's interaction with the molten glaze. We use spectrophotometry to analyze the "fired color" coordinates. By understanding the chemical interaction between the pigment and the glaze frit, we can help customers adjust their recipes to maximize the "a*" (redness) or "b*" (yellowness) of the finish. We provide data on how different "soak times" and "cooling rates" affect the final L* a* b* values, ensuring a robust production window.