Solid Propellants Sugar Paste Kneader

Sugar acts both as a fuel source and a binding agent when combined with strong oxidizers and performance-enhancing additives. The kneader’s intensive shearing, folding, and kneading action converts these thick, sticky composite materials into a manageable, homogeneous paste free of dead zones or agglomeration.

The machine is available in Stainless Steel 316, Stainless Steel 304, or Mild Steel. Stainless steel versions can be finished to matt or mirror polish as required; Mild Steel models receive one coat of red oxide plus two coats of epoxy paint. PTFE shaft sealing is provided for compatibility needs.

Discharge can be performed by hand-wheel (manual) or hydraulic (automatic) tilting of the container, through bottom valves, or via an extrusion screw. The extrusion option is especially useful for directly transferring the mixed paste for casting into rocket motor cases.

Two counter-rotating Z-shaped (sigma) blades operate in a horizontal trough, typically at different speeds (often a 3:2 ratio) and meeting tangentially. This produces bulk movement, stretching, folding, dividing, recombining, and strong shearing that handles high-viscosity materials effectively—ideal for solid propellant compounds—while the minimal blade-to-trough clearance prevents product sticking.

Models span from ASM-50 (approx. 50 L working / 80 L gross capacity, 5–7.5 HP) to ASM-3000 (approx. 3000 L working / 3800 L gross capacity, 100–120 HP). Both general and heavy-duty motor options are offered, and power voltage can be adjusted to local requirements.

Yes. A jacket for heating or cooling can be supplied, optionally with mineral wool insulation and cladding. Blade cooling arrangements are also available as an accessory to maintain precise temperature control throughout the process.

Available options include a liquid spray system, vacuum system, screw discharge system, blades cooling arrangement, and automatic valve discharge system. These enhance process control, safety, and efficiency for specific propellant formulations.

The tangential Z-blades are engineered with a minimum gap between the trough inner shell and the blades, which eliminates dead zones and reduces the possibility of material buildup or sticking. This supports clean, uniform mixing of sticky high-viscosity pastes.

While optimized for solid propellants in aerospace, defense, and amateur rocketry, similar sigma mixers are also used across pharmaceutical, nutraceutical, herbal, Ayurvedic, biotech, cosmetic, and chemical industries for high-viscosity pastes and compounds.