LDG Series Ribbon Single-Cone Vacuum Mixer Dryer for Lithium Battery Material Drying
Product Overview
The LDG series ribbon type single cone vacuum mixer dryer is engineered for lithium battery precursor, inorganic powder and fine chemical material drying with solvent recovery capability. It features jacket plus hollow ribbon double heating for high drying efficiency.
This vertical, fully enclosed batch vacuum drying equipment integrates drying, mixing and material dispersion functions. The vessel features a single cone structure with an internal hollow heating ribbon agitator. The cone is equipped with an external heating jacket; both the jacket and the hollow ribbon can be fed with heat transfer medium simultaneously, achieving dual-path heating.
The equipment operates under high vacuum and low temperature conditions. The ribbon drives material in up-and-down circulation turnover motion, ensuring uniform heating of filter cake, crystalline and powder materials. The whole machine requires no vessel rotation and the vacuum pipeline has no rotary joint, providing better vacuum stability. Bottom hemisphere valve discharge ensures thorough discharge with no residue.
The system can be configured with CIP online cleaning and SIP online sterilization, meeting GMP hygienic requirements, and is widely used for drying powder, filter cake and crystalline materials in pharmaceutical API, fine chemical, lithium battery material and food additive industries.
Working Principle
Wet material is fed into the cone vessel through the top feed port. The jacket and hollow ribbon are fed with hot water/thermal oil/low pressure steam to provide the heat source, while the vessel maintains a high vacuum environment to lower the solvent vaporization temperature.
The variable frequency driven ribbon agitator rotates, lifting material upward from the cone bottom along the vessel wall. When material reaches the top, it falls back to the bottom by gravity, forming continuous circulation turnover that constantly renews the material heating surface and accelerates internal solvent volatilization. The volatilized solvent vapor passes through the top dust filter and is extracted by the vacuum unit, and can be connected to an external condenser for solvent recovery.
After drying is completed, the bottom hemisphere discharge valve is opened for direct discharge, completing the batch drying process.
Core advantages: jacket + hollow ribbon dual heating, active agitation material turnover, low temperature vacuum drying, closed batch operation, residue-free discharge.
Application Fields
- New energy and new materials: lithium battery precursor, inorganic powder and crystalline material drying
- Fine chemical industry: catalysts, dye intermediates, various filter cakes and easily oxidized powder drying, with solvent recovery
- Pesticide industry: pesticide intermediates and filter cake crystalline material closed drying
- Pharmaceutical API industry: pharmaceutical intermediates, crystalline API and filter cake vacuum drying, meeting GMP clean production
- Food and biological industry: food additives, plant extracts and crystalline powder low-temperature drying
Technical Parameters
| Model |
Total Volume (L) |
Effective Volume (L) |
Agitator Speed (r/min) |
| LDG-100 | 100 | 70 | 5-35 |
| LDG-200 | 200 | 140 | 5-35 |
| LDG-300 | 300 | 210 | 5-35 |
| LDG-500 | 500 | 350 | 5-35 |
| LDG-1000 | 1000 | 650 | 5-35 |
| LDG-1500 | 1500 | 850 | 5-35 |
| LDG-2000 | 2000 | 1400 | 5-35 |
| LDG-2500 | 2500 | 1750 | 5-35 |
| LDG-3000 | 3000 | 2100 | 5-35 |
| LDG-3500 | 3500 | 2450 | 5-35 |
| LDG-4000 | 4000 | 2800 | 5-35 |
| LDG-5000 | 5000 | 3500 | 5-35 |
| LDG-7500 | 7500 | 4800 | 5-35 |
General parameters: Working vacuum: -0.06 ~ -0.098 MPa | Working temperature: room temp ~ 120°C (adjustable by heat transfer medium) | Filling coefficient: 0.3-0.7 | Contact material: 304/316L stainless steel customizable | Operation mode: batch production
Core Features
- Fully enclosed batch operation: suitable for heat-sensitive, easily oxidized and toxic materials; solvent recoverable
- Dual heating structure: vessel jacket + hollow ribbon supply heat simultaneously, greatly increasing effective heating area; drying efficiency far exceeds double cone rotary dryer, shortening production cycle
- Active ribbon agitation: continuous material turnover disperses lumps; filter cake and viscous crystalline materials do not easily stick to the wall, ensuring uniform drying
- Fixed vessel without rotation: no rotary vacuum joint, excellent overall sealing, stable operation under high vacuum conditions
- Simple operation: automated batch control; available as single machine or complete system with vacuum unit and condensation recovery
- Bottom large-diameter hemisphere valve discharge: cone hopper structure, material can be almost completely discharged with no dead corners
- Hygienic customizable: mirror polishing, supports CIP online cleaning and SIP online sterilization, meeting pharmaceutical GMP regulations
Frequently Asked Questions
Q1: What is the core difference between the LDG single cone ribbon dryer and a double cone rotary vacuum dryer?
A: The LDG vessel is fixed and relies on internal hollow ribbon for active agitation and material turnover, with jacket + ribbon dual heating and higher drying efficiency. It can process filter cake and easily agglomerated viscous materials. The double cone dryer relies on vessel rotation for material mixing without internal agitation, giving weak processing capability for agglomerated filter cake. The LDG has no rotary vacuum joint, more stable vacuum system, supports CIP/SIP, and is more suitable for pharmaceutical high-cleanliness conditions.
Q2: Can it process filter cake and viscous agglomerated materials?
A: Yes. The internal ribbon continuously circulates material, dispersing lumps and renewing heating surface, making it the advantageous model for filter cake drying. It is not suitable for large-particle hard abrasive materials, as hard particles will wear the ribbon and vessel inner wall mirror surface.
Q3: Is it continuous production equipment?
A: The LDG is batch equipment: feeding - drying - discharging is one complete batch. For continuous drying processes, other types of equipment are required.
Q4: Can solvent be recovered?
A: Yes, the equipment can be equipped with condenser and recovery tank to form solvent recovery system, condensing and collecting volatilized solvent.
Q5: Does it support CIP cleaning and SIP sterilization?
A: Yes, the hygienic configuration can be added with CIP spray ball and SIP steam sterilization interface, meeting pharmaceutical GMP production requirements.
Q6: What are the filling requirements?
A: The recommended filling coefficient is 0.3-0.7. Material should neither be too little nor full-tank filling, ensuring the ribbon can fully drive material circulation for uniform drying.
Contact us for detailed specifications and a factory quote.
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