Lab Conical Drum Mixer for Powder Mixing

Lab Conical Drum Mixer for Powder Mixing

Product Overview

The TOB-YZ-15L conical drum mixer is a compact laboratory mixing system designed for homogeneous blending of dry powders and granular materials. It is widely applied in pharmaceuticals, chemicals, food processing, ceramics, metallurgy, and battery material research where small-batch precision mixing is required.

This equipment combines rotating drum mixing with internally adjustable impact elements, enabling controlled dispersion, efficient mixing, and high repeatability. The design is particularly suitable for applications where material uniformity directly affects downstream performance.

Technical Specifications

Structural Design and Mixing Geometry

The mixing drum adopts a combined structure consisting of a cylindrical section and a conical (frustum) section, welded into a single unit. The larger-diameter end serves as the feeding inlet, while the smaller-diameter end is used for discharge. Both ends are sealed using clamp-type covers, ensuring good airtightness and preventing material leakage during operation.

Inside the drum, a horizontal metal shaft is fixed in place, and multiple metal blades are mounted along the shaft. Unlike conventional mixers, the shaft itself does not rotate; instead, the entire drum rotates around it. This configuration creates a relative motion between the bulk material and the internal mixing elements.

A key structural feature is that the metal blades are mounted to the shaft using screw fixation, allowing their angle to be adjusted according to process requirements. The adjustment process is straightforward: the operator loosens the fastening screws, sets the blade to the desired angle, and then tightens the screws to secure it in position. This design introduces a level of process flexibility not commonly found in standard drum mixers.

Mixing Mechanism and Working Principle

During operation, the drum rotates at a controlled speed, carrying materials upward along the inner wall. When the gravitational force exceeds the frictional force, the material falls back downward, forming a continuous tumbling cycle.

As the material falls, it interacts with the fixed but angle-adjustable blades, which play a critical role in modifying particle trajectories. This interaction produces:

● Impact-induced dispersion, breaking up agglomerates
● Directional redistribution of material flow
● Enhanced intermixing between components

Because the blade angle can be adjusted, the intensity and direction of material impact can be controlled. A steeper blade angle increases collision intensity and mixing efficiency, while a gentler angle provides a softer mixing action suitable for fragile materials. This adjustability allows the same equipment to handle a wider range of material properties and process requirements.

Bidirectional Rotation and Process Control

The TOB-YZ-15L conical drum mixer features a programmable bidirectional rotation system, allowing automatic switching between clockwise and counterclockwise rotation within a defined time interval (1–60 seconds).

For example, the mixer can be configured to:

● Rotate clockwise for 10 seconds
● Then rotate counterclockwise for 10 seconds
● Repeat the cycle until the total mixing time is reached

This alternating motion prevents the formation of stable material flow patterns inside the drum, which can occur under continuous unidirectional rotation. By constantly changing the movement direction, the system ensures that materials are repeatedly redistributed, significantly improving overall mixing uniformity.

Speed and Mixing Parameter Control

The rotation speed is continuously adjustable from 0 to 34 rpm, allowing precise adaptation to different material characteristics. The typical mixing duration of 6–8 minutes reflects optimized performance for small-batch operations.

In combination with adjustable blade angles and bidirectional rotation, the system provides three key control variables:

● Rotation speed
● Rotation direction cycle
● Blade angle

This multi-parameter control enables users to fine-tune the mixing process for both efficiency and material protection.

Application Scenarios

The TOB-YZ-15L conical drum mixer is particularly suitable for applications requiring high mixing uniformity and process repeatability.

Typical applications include:

● Dry mixing of battery materials (active powders, conductive additives, binders)
● Pharmaceutical powder blending prior to granulation
● Food and feed material homogenization
● Ceramic and metallurgical powder preparation

For instance, in battery R&D, the dispersion quality of conductive agents directly affects electrode conductivity and consistency. The adjustable blade design allows optimization of mixing intensity, improving dispersion without damaging sensitive materials.

Operational Advantages

The TOB-YZ-15L conical drum mixer integrates several design features that enhance both performance and usability:

● Rotating drum with fixed internal structure reduces mechanical complexity
● Adjustable blade angles provide process flexibility across different materials
● Bidirectional rotation improves mixing uniformity
● Sealed structure minimizes dust leakage and contamination
● Stainless steel construction ensures durability and easy cleaning

Support and Customization

TOB NEW ENERGY provides technical support including equipment selection, process consultation, and after-sales service. Custom configurations can be offered based on specific material characteristics or experimental requirements.

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 Phone number :+86 181 2071 5609