At times, inconsistent mixing leads to batch rejections and material waste. The problem is that conventional mixers are not efficient at handling dense metal or ceramic powders.

Different industries face different problems. For instance, powders may agglomerate, resist uniform blending, or require excessive cycle times. These are some of the problems faced by industries that handle powders, including metal, ceramic, and plastic pigments.

Powders must be well mixed to ensure the final products meet quality requirements. Metal powders are used in industries that include aerospace and powder metallurgy. If the powders are not well mixed, it will lead to defects in the final products. 

Proper mixing is also required in ceramic powders to ensure uniform distribution. This ensures that products have adequate strength and density. Plastic pigments also require adequate mixing to ensure consistent color.

Reliance high-intensity mixers for metal and ceramic powders can address these issues by quickly blending powders. 

What Is a High Intensity Mixer?

Reliance Mixers

High-speed mixing of powder is achieved quickly with a high-intensity mixer featuring rotating blades that can reach speeds of 25 to 40 meters per second.

At this rotation rate, the blades generate significant mixing or shear force, and the powder is mixed in a vortex flow pattern, similar to a miniature tornado. The powder is drawn toward the center and uniformly mixed.

When particles collide with other particles and with the blades, friction generates heat. This heat will help the powders adhere to one another, disperse evenly, and form small clumps or agglomerates, improving mixing.

Key Components of High Intensity Mixers

  • ​Mixing Tools: 

High Intensity Mixers Tools rotate materials at high velocity, generating the shear force and frictional heat needed for uniform powder dispersion. Reliance mixing tools feature a specialized wear-resistant coating, extending service life when processing hard materials such as metals and ceramics.

  • Mixer Bowl:

Made from stainless steel, the mixer bowl is durable in harsh environments and will last for many years. Some bowls feature a jacket to maintain a constant temperature, which is important for mixing heat-sensitive materials, such as pigments.

  • Deflectors:

Deflectors aid in directing materials for a quicker mix when placed on either the lid or the side walls of the mixing containers; they also add friction, generating heat to enhance mixing.

  • Discharge System: 

​The mixer has an extra-wide outlet up to 12″ wide, which helps ensure that the material mixes exit the mixer quickly and, as a result, will substantially reduce the time required for each batch, thereby increasing production rates.

Applications in Powder Processing

Metal Powder Mixing

A high-intensity mixer is useful across various industries, including aerospace and 3D printing. One of the main uses of these mixers is to blend metal powders uniformly. These mixers achieve high uniformity of blend, which is critical in aerospace and powder metallurgy applications where compositional consistency directly affects end-product performance.

In powder metallurgy, large-size mixers also help create a thorough mixture of metallic powders, making it easier to press the powders into desired shapes when evenly mixed.

The particle size distribution of the powder plays an important role in ensuring consistent performance throughout manufacturing and 3D printing processes. Homogeneous alloy powder blending, without any segregation, ensures that there is no variation in composition in any part of the blended powder. 

Controlled atmosphere processing is significant for preventing oxidation and contamination, which could otherwise compromise the powder’s quality. A consistent distribution of flow agents will improve the powder’s flow during later 3D printing. 

Ceramic Powder Processing

To achieve the same mechanical property throughout the end product, you must have the same distribution of fusing agents across the whole piece. With ceramics, since they are brittle, it is important to treat them delicately, as any breakage or distortion will affect their microstructure.

Accurate addition of binder is also vital to achieve sufficient green strength, enabling the compacted materials to retain their shape before sintering. 

Agglomerates must also be removed, as they may cause density and defects in the end product. Temperature control is also vital, especially in phase materials, to maintain the required phase and avoid unwanted phase transformations during processing.

In this way, improved powder compaction results in higher-quality ceramic products, such as refractory materials and tiles.

Plastic Pigment Mixing

Reliance’s industrial high-intensity mixer for pigments is engineered to deliver streak-free, uniform colour dispersion in PVC and other plastic formulations. ​Using a high-shear mixer to mix pigments helps break up pigment clumps, ensuring the color is evenly distributed in the finished plastic product. Pigment is uniformly mixed with PVC in 6 minutes or less, enabling customers to produce plastic more quickly.

Why Choose Reliance Mixers

Reliance produces three kinds of high-intensity mixers: Standard, Direct Drive, and E-Series. These mixers are engineered for energy-efficient operation without compromising mixing intensity or batch consistency. They are adjustable according to production requirements. 

They are available with special tools for mixing metals, ceramics, and pigments. These mixers are designed to require less maintenance and to help the production process run smoothly without interruption. 

​Metal powders require wear resistance, while pigments require very precise mixing. Select a mixer suitable for your batch size and the mixing strength required to achieve your objectives. For ceramics, it is advantageous to use a mixer that has a temperature jacket.

High-intensity mixers from Reliance Mixers are purpose-built for the demanding requirements of metal powder blending, ceramic processing, and plastic pigment dispersion — handling each application with the precision and consistency that industrial production demands. 

Contact our experts today and get your customized quote with the right guidance.

FAQ’s

Yes, because high-intensity color mixers are widely used to disperse pigments into polymers (such as PVC) uniformly, the mixer's high shear forces break up pigment agglomerates, resulting in a streak-free, uniform coloration in the final product.

High-intensity mixers can process a variety of materials, including but not limited to metal powders, ceramic powders, pigments, polymers, additives, lubricants, and binders, making them applicable in industries such as plastics, powder metallurgy, and chemicals, as well as ceramics.

During high-velocity mixing, particles collide with each other and with the mixing tools, generating frictional heat that helps powders achieve even dispersion, form a more uniform coating, and form smaller agglomerates, thereby improving mixing performance.

Durable mixing tools; warranty on mixing tools; stainless steel mixing pots; deflector design to promote flowability of material; temperature control jacket; efficient discharge system. These features will enhance the reliability of your mixer when mixing dense powders, such as ceramics or metals.

Reliance high-intensity mixers, including our standard line, Direct Drive, and E-Series, are engineered for efficient, effective powder processing. Our mixing technologies deliver high-intensity mixing performance with low maintenance requirements, making the mixing process easier for difficult-to-mix powders, including metals and ceramics, as well as plastic pigments.