Ceramics Sigma Mixer

It uses two counter-rotating Z-shaped (sigma) blades that generate intense shearing, folding, and kneading forces. The mixing action combines bulk movement, stretching, folding, dividing, and recombining of the material, along with shearing against the blades and trough walls. This delivers excellent particle dispersion, uniform consistency, and (with optional vacuum) effective air-bubble removal critical for high-quality ceramic products.

The mixer is available in Stainless Steel 316, Stainless Steel 304, and Mild Steel. Stainless-steel versions can be finished to matt or mirror polish as per requirements. Mild-steel units receive one coat of red oxide primer plus two coats of epoxy paint for durability.

Models range from ASM-50 (approx. 50 L working / 80 L gross capacity) to ASM-3000 (approx. 3000 L working / 3800 L gross capacity). Motor power is offered in both general and heavy-duty ratings, with voltage adjustable to match local power supply requirements.

Discharge can be performed manually with a hand-wheel-operated mechanism or automatically via a hydraulic system. The trough can also be tilted for unloading, and optional screw or automatic valve systems support efficient product removal while minimizing contamination risk.

Yes. A jacket for heating or cooling can be provided, complete with mineral-wool insulation and cladding. Many models feature a double-walled jacket that uses steam, hot oil, or chilled water, making the mixer suitable for temperature-sensitive ceramic formulations.

Key features include dual Z-shaped sigma blades capable of handling viscosities up to 10,000,000 centipoise, variable speed control for precise process adjustment, a hydraulic tilt-and-discharge system for easy unloading, optional vacuum capability for denser, bubble-free mixes, and robust stainless-steel construction for corrosion resistance and hygiene.

Optional features include a liquid spray system, vacuum system, blades cooling arrangement, screw system, and automatic valve discharge system. These enhance process flexibility for clay mixing, glaze preparation, and advanced ceramic compounding.

In the tangential design, blades meet tangentially and rotate at different speeds (typically 3:2 ratio), delivering higher shear for very high-viscosity materials. In the overlapping design, blades overlap and rotate at the same speed, providing faster material interchange and lower shear—suitable for materials such as clay coatings. The mixer offers tangential Z blades as standard for uniform mixing of dense ceramic pastes.

It is ideal for both small-batch and large-scale production of floor and wall tiles, sanitaryware, tableware, porcelain, technical ceramics, and refractory materials. It supports clay mixing, glaze preparation, and advanced ceramic compounding, helping manufacturers achieve consistent quality, reduced processing time, and improved end-product performance.