Mastering Glaze Slurry Screening for Flawless Ceramic Finishes

In ceramic manufacturing, the quality of your final product heavily depends on the consistency of your glaze. Whether you’re producing high-end sanitaryware, decorative tiles, or precision tableware, even the slightest imperfection in the glaze can ruin the aesthetics or compromise performance.

What’s often overlooked is the key process behind that flawless surface: Glaze Slurry Screening. Screening of your glaze slurry is important because this screening process helps provide an agglomerate-free, oversized particle-free, and contamination-free glaze slurry. Without this process in place the manufacturer cannot expect the glaze slurry surface application to be smooth, consistent, and quality.

Why Glaze Slurry Needs Screening

As mentioned earlier the glaze slurry is a suspension of ceramic materials, water and possibly some additives. It is applied before firing to acquire a smooth glossy finish. Inconsistencies in the glaze slurry, like undispersed particles or foreign materials, can lead to:

• Defects such as pinholes, or rough surface texture
• Glaze thickness inconsistencies or visibly inconsistent glaze colour
• Potential for spray nozzle blockage or stoppages in lines

Hence, to maintain a smooth operation throughout, one needs to establish an efficient screening system to refine the slurry prior to its actual application.

Sivtek Vibro Separator – Proven Solution for Slurry Screening

The Sivtek Vibro Separator is an efficient, circular vibratory screener suitable for most glaze slurry applications. The screeners are designed as efficiency and accuracy are key; a unique multi-plane motion separate impurities from the slurry without disruption of flow.

Key Benefits:

• Precise particle separation via fine mesh
• Quick-change mesh design with tool-free clamps for easy cleaning
• Built with stainless steel (SS 304/316L) for corrosion resistance
• Small footprint applicable for integrating existing glaze lines
• Optional ultrasonic deblinding system to prevent screen blinding during high-viscosity screening

This machine is perfect for standard operations such as pre-application screening, post-mixing filtration, or recirculation quality control.

Sivtek Super Gyro Separator – High-Throughput Screening for Demanding Applications

For larger production lines or thicker, more viscous glaze slurries, the Sivtek Super Gyro Separator delivers unmatched performance. This heavy-duty machine uses intense gyratory motion to create a smooth circular screening pattern, increasing mesh contact time and preventing clogging.

Why It Excels:

• Perfect for continuous and high-volume glaze processing
• Suitable for sticky or high-solid-content slurries
• High vibration force for superior screening efficiency
• Can have ultrasonic mesh cleaning and CIP systems
• Built for plants that need to operate 24/7 with minimal downtime

Where to Use These Screeners in Your Glaze Process

The two types of screeners known as the Sivtek Vibro Separator and Sivtek Super Gyro Separator will easily be utilized at different stages of the glaze slurry process. They are commonly used after mixing to remove lumps and undispersed particles, before application to ensure the slurry is smooth and spray-ready, and in recirculation loops to maintain quality during extended production runs. The Super Gyro Separator will do better for high-viscosity or high-volume glazes due to its powerful gyratory motion that prevents clogging of meshes and assists continuous high-throughput screening.

Benefits of Effective Glaze Slurry Screening

Investment in the proper screening equipment for the glaze slurry line will give measurable results:

• Improved glaze smoothness and finish quality
• Clogging of spray nozzles and machine downtime are minimized
• Lower rejection and rework rates
• Increased production consistency and yield

Industries Benefiting from Glaze Slurry Screening

• Sanitaryware Production – Smooth, glossy surfaces with fewer glaze defects
• Tile Manufacturing – Consistent color and thickness across large batches
• Tableware & Crockery – High-finish aesthetic and surface uniformity
• Technical Ceramics & Porcelain – Controlled coating for functional performance

Conclusion: Screen Smart, Glaze Better

Glaze Slurry Screening is more than a support process—it’s a quality assurance step that directly impacts your product’s market value. Whether your process is mold-based or high-speed glaze lines, Galaxy Sivtek will have a recommendation for your process screening needs.

Choose the Sivtek Vibro Separator for standard glaze applications or the Super Gyro Separator when handling high-viscosity or high-volume production. Both machines are designed for non-stop operation, precise separation, and cleaning easy, all of which will allow your ceramic products to look and perform at their best.

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