Perfect Mixing Technologies for Various Industries

At Klinkenberg, we understand the challenges of industrial processes where precision and efficiency are essential. Our dual-shaft paddle mixer, also known as a Fluidizing Mixer or Zero-Gravity Mixer, is the solution for homogeneous mixing of diverse materials in sectors such as pharmaceuticals, food, chemicals, and construction.
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Paddle Mixers for Batch UseImportant selection criteria for the right batch paddle mixer

Several factors determine the optimal size of the paddle mixer. The size of the mixer is based on the required capacity. Begin this selection procedure by determining the required throughput of the bulk material to be mixed in cubic meters, per minute or per hour.

Additionally, the filling rate of the mixer must be considered — is it manually filled by pouring bags into the mixer, or is dosing equipment used, such as dosing screws or weighed feeder systems? The discharge of the mixed bulk also affects the cycle time in the mixing process; is the discharge structured or done via a product drop through a bomb door that collects the entire content of the mixer in a hopper.

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Important factors for selecting a batch paddle mixer:

  • Filling rate, manual or automatic
  • Discharge rate, controlled or bulk drop into underlying hopper
  • Mixing time
  • Batch variations
  • Cleaning between product changes

Innovative Technology and Unique Operation

The Klinkenberg dual-shaft paddle mixer distinguishes itself by the weightless zone principle. This advanced process uses counter-rotating shafts and specially designed paddles that suspend the materials. The result is an unmatched mixing performance:

  • Free movement of particles regardless of size, shape, or density.
  • Super-fast mixing cycles, ranging from 10 seconds to 1 minute.
  • Minimal heat generation and low shear forces, perfect for delicate or heat-sensitive products such as flakes and spray-dried powders.

Key Advantages of the Dual-Shaft Paddle Mixer With its innovative design and robust construction, the paddle mixer offers unique benefits:

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Fast mixing speed

Ideal for high capacities and short throughput times.

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Hygienic design

Easy to clean, with no dead corners.

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Durability and low maintenance costs

Thanks to high-quality materials and reliable components.

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Versatile applications

Including options such as liquid addition via spray balls, intensive lump breakers, and special coatings for abrasive materials.

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Complete discharge

Thanks to a large bomb door or pneumatically operated discharge valves, segregation is prevented and the process is accelerated.

Impact on the Mixing Process with Our Paddle Mixers

When mixing solids, your goal is to create a homogeneous end product from two or more different raw materials. However, chemical composition such as density, particle size, color, shape, flow properties, and other characteristics of each raw material may vary.

  • How much variation in the homogeneity of the final mixture is acceptable?
  • What variation in batch size must the mixer handle?
  • Is liquid addition required in the mixture?
  • How much floor space and headroom is available for the mixer?
  • Are dosing devices needed to fill the mixer?
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Optimization of Your Mixing Process

To achieve an acceptable mixture, you can adjust the mixing process in advance, for example by improving raw material properties, the process itself, or the machine design. This includes redistributing raw materials, reducing differences in particle size, or increasing cohesion by grinding or adding moisture such as water or oil.

  • Compact design
  • Quick-clean designs
  • Low energy consumption
  • Mixing in 10 to 30 seconds
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The possibilities of Klinkenberg paddle mixers

  • 200 to 2000 liters
  • Single or dual shaft design
  • Materials: Steel, Stainless Steel, Hardened Steel
  • Drop bottoms
  • Precision feeder systems possible
  • Short mixing times
  • Direct driven
  • Mechanically synchronized
  • Liquid feed options

Specific Additions and Configurations

The paddle mixer is fully customizable with various options to meet specific process requirements:

Overhead Chopper

For materials containing lumps or agglomerates, optional Pin Milling Bars are available. These increase shear forces and ensure a uniform particle size.

Drive Systems

  • Single Chain Drive A synchronous system that drives both shafts via a heavy-duty chain.
  • Dual Direct Drive: Independent drives allow for more flexible operation of tangentially rotating shafts.

Materials and Coatings

For abrasive products, the mixing paddles can be equipped with tungsten carbide coatings, minimizing wear and extending the machine’s service life.

Application Areas The versatility of the Klinkenberg dual-shaft paddle mixer makes it suitable for a wide range of sectors:

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Batch Mixers
  • Pharmaceutical Industry:

    For mixing medicines, supplements, and powdered ingredients.

  • Food Industry:

    Ideal for instant drinks, milk powders, and vitamin premixes.

  • Chemical Industry:

    Suitable for building materials, mineral premixes, and fly ash conditioning.

  • Environmental and Construction Applications:

    For processing raw materials and recycling processes.

Variants

Mixing bakery raw materials

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Mechanical synchronization

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Twin shaft paddle mixer

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Paddle mixer quick-clean design

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FAQ Direct answers to your questions

Quickly find answers to frequently asked questions about our products, from specifications to maintenance. Our FAQ section helps you make the right choice.

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The paddle mixer is suitable for dry powders, granulates, flakes, and heat-sensitive products. Thanks to its flexibility, it can be adapted to specific materials and processes.

Mixing cycles range from 10 seconds to 1 minute, depending on the product type and desired mixing quality.

Absolutely. The hygienic design and easy cleaning make it perfect for applications in the food industry.

The weightless zone is created by the counter-rotating shafts and specially designed paddles. These cause the particles to temporarily suspend, resulting in uniform and fast mixing regardless of the size, density, or shape of the materials.

The large bomb door or pneumatically operated discharge valves ensure quick and complete emptying of the mixer. This minimizes the risk of segregation, maintaining the homogeneity of the mixture.

The paddle mixer can be equipped with spray balls or nozzles that evenly add liquids to the mixture. This is ideal for applications such as moistening, coating, or adding binders.

The dual-shaft paddle mixer can achieve mixing ratios up to 1:8,000 with a high degree of consistency. This is essential for applications where accuracy is critical, such as in the pharmaceutical and food industries.

Optional Pin Milling Bars (Overhead Chopper) can be installed. These rapidly rotating bars increase shear forces and ensure uniform particle size, even with sticky or clumped materials.

Capacity varies depending on the model and application, but standard capacities range from a few dozen liters to thousands of liters per batch. Custom designs are available for larger volumes.

Although maintenance costs are low due to the robust construction, periodic inspections are recommended. Typical maintenance activities include:

· Inspection and lubrication of bearings and seals.

· Checking the drive and chains.

· Replacement of wear parts such as paddles or mixing flights in abrasive applications.