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Home > Knowledge Center > Equipment FAQ > Double Planetary Vacuum Mixer (Slurry Mixer) FAQ

Double Planetary Vacuum Mixer (Slurry Mixer) FAQ

Table of Contents

Introduction

A Double Planetary Vacuum Mixer, also known as a Slurry Mixer, is a critical piece of equipment in the battery manufacturing process. It ensures the uniform mixing of active materials, conductive agents, binders, and solvents in a vacuum environment to produce high-quality electrode slurry. This article provides a comprehensive FAQ on double planetary vacuum mixers, covering their functionality, applications, advantages, and more.

1. What is a Double Planetary Vacuum Mixer?

A Double Planetary Vacuum Mixer is an industrial mixing machine designed for the homogeneous blending of viscous materials under vacuum conditions. It is widely used in the battery industry to prepare electrode slurry by uniformly mixing positive and negative active materials, conductive agents, binders, and solvents.

The mixer consists of two planetary blades that rotate on their own axes while also revolving around the central axis of the mixing vessel. This dual motion ensures thorough mixing and dispersion, eliminating air bubbles and agglomerates, resulting in a consistent and high-quality slurry.

2. How Does a Double Planetary Vacuum Mixer Work?

Battery Slurry Mixing Machine 21

Battery Slurry Mixing Machine 21

A Double Planetary Vacuum Mixer operates by combining the rotational and orbital movements of its mixing blades. The blades rotate on their own axes and simultaneously revolve around the center of the mixing vessel, creating a complex flow pattern that ensures thorough mixing and dispersion of the components.

The vacuum environment helps to remove air bubbles and prevent oxidation, ensuring the final product is free from defects. The mixer can handle a wide range of viscosities, making it suitable for various applications in the battery and other industries.

3. Key Components and Features

The key components and features of a Double Planetary Vacuum Mixer include:

  • Planetary Blades: Two or more blades that rotate on their own axes and revolve around the central axis of the mixing vessel.
  • Mixing Vessel: A cylindrical or conical container where the mixing takes place, often made of stainless steel or other corrosion-resistant materials.
  • Vacuum System: A system that creates a vacuum inside the mixing vessel to remove air bubbles and prevent oxidation.
  • Drive System: A motor and gearbox assembly that powers the planetary motion of the blades.
  • Control Panel: A user interface for controlling the mixer’s speed, vacuum level, and other parameters.

These components work together to ensure efficient and uniform mixing, making the Double Planetary Vacuum Mixer a versatile and reliable tool in the battery manufacturing process.

4. Applications in Battery Production

In the battery production process, a Double Planetary Vacuum Mixer is used to prepare the electrode slurry, which is a crucial step in the fabrication of battery electrodes. The mixer ensures that the positive and negative active materials, conductive agents, binders, and solvents are thoroughly mixed and dispersed in a vacuum environment, resulting in a slurry with stable viscosity, no agglomeration, and no air bubbles.

Battery Slurry Mixing Machine
Battery Slurry Mixing Machine

Battery Slurry Mixing Machine

This uniform slurry is then coated onto the current collector foils, dried, and calendared to form the final electrode. The quality of the slurry directly affects the performance and lifespan of the battery, making the Double Planetary Vacuum Mixer an essential piece of equipment in the battery manufacturing process.

5. Advantages of Using a Double Planetary Vacuum Mixer

Using a Double Planetary Vacuum Mixer offers several advantages in the battery production process:

  • Uniform Mixing: The dual planetary motion ensures thorough mixing and dispersion of all components, resulting in a homogeneous slurry.
  • Vacuum Environment: The vacuum system removes air bubbles and prevents oxidation, ensuring a defect-free slurry.
  • High Viscosity Handling: The mixer can handle a wide range of viscosities, making it suitable for various slurry formulations.
  • Scalability: Available in different sizes, these mixers can be scaled up or down to meet specific production requirements.
  • Reliability and Durability: Made from high-quality materials, these mixers are built to last and require minimal maintenance.

These advantages make the Double Planetary Vacuum Mixer a preferred choice for battery manufacturers looking to produce high-quality electrode slurry consistently.

6. Specifications and Parameters

The following table provides detailed specifications and parameters for a typical Double Planetary Vacuum Mixer:

Parameter Specification
Capacity (L) 10 – 1000
Mixing Speed (RPM) 0 – 1000
Vacuum Level (mbar) 0 – 100
Power (kW) 1 – 100
Material of Construction Stainless Steel (304/316), Teflon, etc.
Temperature Range (°C) -20 to 150
Dimensions (mm) Varies based on capacity
Weight (kg) Varies based on capacity

These specifications can vary depending on the specific model and manufacturer, but they provide a general overview of the capabilities of a Double Planetary Vacuum Mixer.

Battery Slurry Mixing Machine 13
Battery Slurry Mixing Machine 13

7. Price Comparison

The following table compares the prices and features of different Double Planetary Vacuum Mixers from various manufacturers:

Manufacturer Model Capacity (L) Price (USD) Key Features
Company A Model X 50 $50,000 High-speed mixing, advanced vacuum system, touchscreen control panel
Company B Model Y 100 $75,000 Variable speed control, durable construction, easy maintenance
Company C Model Z 200 $100,000 High-capacity, temperature control, robust design

These prices and features can help you choose the most suitable Double Planetary Vacuum Mixer for your specific needs and budget.

8. Maintenance and Troubleshooting

Regular maintenance and troubleshooting are essential to ensure the optimal performance and longevity of a Double Planetary Vacuum Mixer. Here are some key maintenance tips and common troubleshooting solutions:

  • Regular Cleaning: Clean the mixing vessel and blades after each use to prevent material buildup and contamination.
  • Lubrication: Lubricate the moving parts regularly to reduce wear and tear.
  • Inspection: Inspect the mixer for any signs of damage or wear, such as cracks or loose bolts, and address them promptly.
  • Calibration: Calibrate the mixer’s speed and vacuum levels periodically to ensure accurate and consistent performance.
  • Common Issues and Solutions:
    • Issue: Inconsistent Mixing
      • Solution: Check the blade alignment and ensure the mixing speed is set correctly.
    • Issue: Vacuum Leak
      Battery Slurry Mixing Machine 08
      Battery Slurry Mixing Machine 08
      • Solution: Inspect the vacuum seals and replace them if necessary. Ensure all connections are tight.
    • Issue: Overheating
      • Solution: Check the cooling system and ensure it is functioning properly. Reduce the mixing speed if necessary.

By following these maintenance and troubleshooting tips, you can ensure that your Double Planetary Vacuum Mixer operates efficiently and reliably.

9. Slurry Mixer FAQ

  1. What is the primary function of a Double Planetary Vacuum Mixer?The primary function of a Double Planetary Vacuum Mixer is to uniformly mix and disperse active materials, conductive agents, binders, and solvents in a vacuum environment to produce high-quality electrode slurry for battery production.
  2. Can a Double Planetary Vacuum Mixer handle high-viscosity materials?Yes, a Double Planetary Vacuum Mixer is designed to handle a wide range of viscosities, including high-viscosity materials, making it suitable for various slurry formulations in the battery industry.
  3. What are the key components of a Double Planetary Vacuum Mixer?The key components include planetary blades, mixing vessel, vacuum system, drive system, and control panel. These components work together to ensure efficient and uniform mixing.
  4. How does the vacuum system benefit the mixing process?

    Double Planetary Vacuum Mixer
    Double Planetary Vacuum Mixer

    Battery Slurry Mixing Machine 09The vacuum system removes air bubbles and prevents oxidation, ensuring a defect-free slurry. This is crucial for producing high-quality electrode slurry in the battery manufacturing process.

  5. What are the advantages of using a Double Planetary Vacuum Mixer in battery production?The advantages include uniform mixing, vacuum environment, high viscosity handling, scalability, and reliability. These features ensure the production of high-quality electrode slurry, which directly affects the performance and lifespan of the battery.
  6. What are the typical specifications of a Double Planetary Vacuum Mixer?Typical specifications include capacity (10 – 1000 L), mixing speed (0 – 1000 RPM), vacuum level (0 – 100 mbar), power (1 – 100 kW), and temperature range (-20 to 150 °C). These specifications can vary depending on the specific model and manufacturer.
  7. How do I choose the right Double Planetary Vacuum Mixer for my needs?Consider factors such as capacity, mixing speed, vacuum level, power, and temperature range. Compare the prices and features of different models to find the one that best meets your specific requirements and budget.
  8. What are some common issues and solutions for a Double Planetary Vacuum Mixer?Common issues include inconsistent mixing, vacuum leaks, and overheating. Solutions include checking blade alignment, inspecting and replacing vacuum seals, and ensuring the cooling system is functioning properly.
  9. How often should I perform maintenance on a Double Planetary Vacuum Mixer?Regular cleaning, lubrication, and inspection should be performed after each use. Calibration of the mixer’s speed and vacuum levels should be done periodically, typically every 3-6 months.
  10. What is the typical lifespan of a Double Planetary Vacuum Mixer?The typical lifespan of a Double Planetary Vacuum Mixer is 10-15 years, depending on the quality of the materials, maintenance, and usage. Regular maintenance and proper use can extend the lifespan of the mixer.

 

Double Planetary Vacuum Mixer (Lithium-Ion Battery Specialized) Specification-Capacity-Price Reference Table

Notes: 1. Capacity calculation basis: 300 days of effective operation per year, 18 hours of continuous production per day, single-batch mixing cycle calculated based on the conventional 3-hour/batch for lithium-ion battery cathode and anode materials; 2. Prices are 2025 domestic market tax-inclusive reference prices in China, and the price of explosion-proof models, high-end models with automatic feeding/discharging will increase by 20%-30%; 3. All models are applicable to the mixing and preparation of lithium-ion battery cathode/anode slurry, electrolyte, adhesive and other materials.
Equipment Model & Specification Core Technical Parameters Single-Batch Production Capacity Theoretical Annual Capacity Market Price Range (RMB) Applicable Production Scenarios
5L R&D-Grade Double Planetary Vacuum Mixer Effective volume: 5L;

Revolution speed: 0-60rpm adjustable;

Rotation speed: 0-120rpm adjustable;

Ultimate vacuum degree: ≤-0.095MPa;

Temperature control range: Room temperature – 120℃;

Standard configuration: Manual feeding & manual discharging;

Single-batch slurry weight: 8-10kg;

Single-batch mixing cycle: 2-3 hours;

Annual batch quantity: 1800 batches;

Annual capacity: 14.4-18 tons;

Domestic mainstream brand: 100,000-200,000 RMB;

Imported high-end brand (German/Japanese): 300,000-500,000 RMB;

Laboratory R&D, formula debugging, small-batch sample preparation, material research in universities and scientific research institutions;
20L Pilot-Grade Double Planetary Vacuum Mixer Effective volume: 20L;

Revolution speed: 0-50rpm adjustable;

Rotation speed: 0-100rpm adjustable;

Ultimate vacuum degree: ≤-0.095MPa;

Temperature control range: Room temperature – 120℃;

Optional: Small automatic feeding system;

Single-batch slurry weight: 32-40kg;

Single-batch mixing cycle: 2.5-3.5 hours;

Annual batch quantity: 1540 batches;

Annual capacity: 49-61.6 tons;

Domestic mainstream brand: 250,000-400,000 RMB;

Imported high-end brand: 600,000-900,000 RMB;

Formula verification in pilot line, small-batch trial production, material performance testing, R&D and production of small-scale cells;
50L Pilot-Grade Double Planetary Vacuum Mixer Effective volume: 50L;

Revolution speed: 0-40rpm adjustable;

Rotation speed: 0-80rpm adjustable;

Ultimate vacuum degree: ≤-0.095MPa;

Temperature control range: Room temperature – 120℃;

Optional: Automatic feeding & discharging system;

Single-batch slurry weight: 80-100kg;

Single-batch mixing cycle: 2.5-3.5 hours;

Annual batch quantity: 1540 batches;

Annual capacity: 123.2-154 tons;

Domestic mainstream brand: 450,000-700,000 RMB;

Imported high-end brand: 1,000,000-1,500,000 RMB;

Medium-scale pilot production, formal formula verification, pre-mass-production process validation, small and medium-sized battery cell production;
200L Mass-Production-Grade Double Planetary Vacuum Mixer Effective volume: 200L;

Revolution speed: 0-30rpm adjustable;

Rotation speed: 0-60rpm adjustable;

Ultimate vacuum degree: ≤-0.095MPa;

Temperature control range: Room temperature – 120℃;

Standard configuration: Automatic feeding & discharging, explosion-proof design;

Single-batch slurry weight: 320-400kg;

Single-batch mixing cycle: 3-4 hours;

Annual batch quantity: 1350 batches;

Annual capacity: 432-540 tons;

Domestic mainstream brand: 1.2-1.8 million RMB;

Imported high-end brand: 2.5-3.5 million RMB;

Formal mass production of lithium-ion battery cells, supporting 1-2GWh production line, large-scale slurry preparation in gigafactories;
500L Large-Scale Production Double Planetary Vacuum Mixer Effective volume: 500L;

Revolution speed: 0-25rpm adjustable;

Rotation speed: 0-50rpm adjustable;

Ultimate vacuum degree: ≤-0.095MPa;

Temperature control range: Room temperature – 120℃;

Standard configuration: Fully automatic feeding/discharging, explosion-proof design, online viscosity monitoring;

Single-batch slurry weight: 800-1000kg;

Single-batch mixing cycle: 3-4 hours;

Annual batch quantity: 1350 batches;

Annual capacity: 1080-1350 tons;

Domestic mainstream brand: 2.5-3.8 million RMB;

Imported high-end brand: 5-7 million RMB;

Large-scale mass production in gigafactories, supporting 3-5GWh production line, high-volume continuous slurry preparation;
1000L Ultra-Large Production Double Planetary Vacuum Mixer Effective volume: 1000L;

Revolution speed: 0-20rpm adjustable;

Rotation speed: 0-40rpm adjustable;

Ultimate vacuum degree: ≤-0.095MPa;

Temperature control range: Room temperature – 120℃;

Standard configuration: Fully automatic batching/feeding/discharging, explosion-proof design, closed-loop viscosity control;

Single-batch slurry weight: 1600-2000kg;

Single-batch mixing cycle: 3.5-4.5 hours;

Annual batch quantity: 1200 batches;

Annual capacity: 1920-2400 tons;

Domestic mainstream brand: 4.5-6.5 million RMB;

Imported high-end brand: 8-12 million RMB;

Ultra-large-scale production in super gigafactories, supporting 6-10GWh production line, core equipment for continuous mass production;

 

 

10. Conclusion

A Double Planetary Vacuum Mixer, also known as a Slurry Mixer, is an essential piece of equipment in the battery manufacturing process. It ensures the uniform mixing of active materials, conductive agents, binders, and solvents in a vacuum environment, resulting in high-quality electrode slurry. By understanding its functionality, key components, and advantages, you can make an informed decision when choosing the right mixer for your needs. Regular maintenance and troubleshooting will help ensure the mixer operates efficiently and reliably, contributing to the production of high-performance batteries.

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