Planetary mixer

verticalbatchsolid/liquid

Overview
In mixing and kneading processes for pyrotechnic compositions, solid propellants, and flammable or explosive polymer composites, the vertical kneader is a core equipment choice providing high intrinsic safety and excellent mixing uniformity. Its overhead shaft design prevents the shaft seal from being immersed in the material, reducing frictional heat and the ignition risk associated with horizontal designs. The machine is commonly used in specialized military and high-end civil explosives manufacturing.

Product Details
Pyrotechnic compositions are high-risk chemicals: sensitive to impact, friction, compression, flames, high temperature, and static electricity. Exposure to these conditions can trigger combustion or explosion, making production and storage operations inherently hazardous and requiring purpose-built equipment and controls.

Equipment Parameters of Flammable and Explosive Materials (Pyrotechnic Compositions) Vertical Kneader
Capacity: 10 L ~ 5,000 L
Applicable viscosity: 10,000 ~ 3,000,000 cP (high-viscosity pastes and plastic materials)
Key applications: solid rocket propellants, pyrotechnic compositions, mixed explosives, specialty silicone rubbers and sealants, polymer binders, high-viscosity composites.

Design & Safety Features

• 01 Explosion-proof design — Engineered and constructed to meet stringent explosion-proof standards with multi-layer protections.
• 02 Comprehensive safety measures — Automatic control systems for overload and fault protection plus local audible and visual alarms.
• 03 Safe control system — Combination of local push-button operation and remote PLC control for process safety.
• 04 Safety monitoring system — On-site video monitoring and remote data acquisition/download capabilities.
• 05 Thorough mixing (no dead zones) — Planetary mixing action and bottom-scraping eliminate dead zones and ensure homogeneity without direct metal-on-metal impact.
• 06 No material contamination — Only mixing elements and vessel body contact the product, minimizing foreign-matter contamination risk.
• 07 High production efficiency — Supports multiple interchangeable vessels, facilitating fast discharge and cleaning.

Additional Technical Notes
The overhead shaft and planetary mixing design reduce shaft-seal heating and ensure uniform kneading of high-viscosity, temperature-sensitive and shaft-clinging materials. The system supports vacuum degassing and can be supplied with wear-resistant coatings, precise temperature control and other customizable options to match process requirements.

Technical specifications

• Capacity range: 10 L to 5,000 L
• Applicable viscosity: 10,000 to 3,000,000 cP
• Mixing action: Planetary mixing to eliminate dead zones
• Contact surfaces: Only mixing components and vessel body contact material
• Design: Overhead shaft vertical kneader to reduce shaft-seal heat generation
• Safety: Multi-layer explosion-proof controls, overload protection, audible/visual alarms
• Control: Local push-button operation plus remote PLC control
• Monitoring: On-site video surveillance and remote data acquisition/download
• Production features: Supports multiple interchangeable vessels; easy discharging and cleaning
• Key applications: Solid rocket propellants, pyrotechnic compositions, mixed explosives, specialty silicone rubbers/sealants, polymer binders