What is High Shear Colloidal Mixer Technology?
In the world of heavy construction and geotechnical foundations, grout mixing plays a vital role in ensuring structural integrity. A consistent, homogenized, and stable grout mix can make the difference between a reliable structure and one that fails under stress. At the core of this process is high shear colloidal mixer technology, which has revolutionized the way professionals prepare grout.
Our high shear colloidal mill is the most advanced in the industry, producing a grout mix that is superior in stability and uniformity. This technology ensures that every batch meets the highest standards of quality and performance. Let’s break down how this cutting-edge equipment works and why it stands above the rest.
The Role of the Mixing Tank
The mixing tank is more than just a container. It acts as a centrifugal separator, playing a crucial role in creating a perfectly blended mix. As the material circulates, centrifugal force moves the heavier, unmixed grout to the outer edges of the tank. Meanwhile, the lighter portions, including water and partially mixed grout, flow inward toward the tank’s throat and into the colloidal mill. This indicates the colloidal action of the mixing process.

Once inside the mixer, the lighter material undergoes intense shearing before being discharged tangentially back into the vortex. This process continuously blends the mixture, ensuring complete homogenization. Each pass through the discar breaks up the grout until the mix becomes fully uniform. At that point, the centrifugal action no longer separates differing densities, resulting in a smooth, consistent vortex surface.
This high-speed vortex is also essential for rapidly integrating additives or admixtures. By immediately dispersing these materials, the system guarantees even distribution without clumping. Depending on the size of the mixer, this entire process can take as little as 15 seconds, making it one of the fastest and most efficient grout mixing technologies available.
The Importance of the Feed Box
A well-designed feed system is critical to a seamless mixing process. The feed box leading into the discar housing is built to accommodate large lumps of unmixed cement at the start of the mixing cycle. Cement lumps, especially in the early stages, can be highly viscous and sticky. A poorly designed feed system would struggle to break them down efficiently.
Our mixer ensures that even the largest clumps pass through to the discar, where they are immediately broken apart. This prevents delays, reduces material waste, and ensures a faster transition from raw ingredients to a fully homogenized grout mix.
Precision Control with High-Performance Valves
The colloidal mill’s output splits into two pathways: one redirects slurry tangentially back into the mixer to sustain the vortex, while the other discharges it for use. This dual-path system provides superior control over the mixing process, allowing operators to maintain optimal consistency at all times.
To manage these flows, the system uses simple yet highly effective pneumatic or manual pinch valves. These valves ensure precise control over material movement, eliminating inconsistencies and keeping the process smooth and simple. This control mechanism enhances efficiency and ensures that every batch meets rigorous quality standards.
The Colloidal Mill: The Heart of the High Shear Colloidal Mixer System
At the core of the high shear colloidal mixer process is the colloidal mill. This component is what makes the technology truly revolutionary. The mill consists of a high-speed rotor, known as the discar, which operates at 2100 RPM. This discar is housed within a close-fitting chamber, allowing for a highly controlled shearing process.

The discar is designed to float horizontally on its mounting shaft, with internal fluid pressure keeping it centered in the housing. This self-centering mechanism ensures uniform shearing and prevents mechanical wear over time.
The clearance between the discar and the housing is approximately 3mm. In this narrow gap, extreme turbulence and high shearing forces break down clusters of dry cement particles. This intense action ensures that every particle is thoroughly dispersed, eliminating inconsistencies in the final mix.
The colloidal mill is also a powerful centrifugal pump. It delivers a maximum discharge pressure of 30 PSI and a flow rate of up to 224 gallons per minute. This combination of high-speed shearing and powerful pumping makes it the most efficient grout mixing technology in the industry.
Why Our High Shear Colloidal Mixer is the Best in the Industry
Many grout mixing systems on the market struggle to produce a truly stable and homogeneous mix. Inconsistent particle dispersion leads to weak grout structures, reducing long-term performance and durability. Our high shear colloidal mill eliminates these issues through advanced engineering and precision design.
Here’s what sets our system apart:
- Unmatched Homogenization
- The high-speed shearing action creates a mix that is fully uniform, eliminating weak spots.
- The controlled turbulence prevents material separation, ensuring long-term stability.
- Rapid Mixing Time
- The entire process takes as little as 15 seconds, dramatically increasing efficiency.
- Faster mixing means higher output, reducing labor costs and downtime.
- Superior Cement Particle Breakdown
- The intense shearing force eliminates clumps and ensures maximum hydration. The 3mm high tolerance, low clearance passage way breaks all particles down for full admixture suspension.
- Fully hydrated cement leads to stronger, more durable grout.
- Optimized Vortex Recirculation
- Continuous mixing eliminates dead zones in the tank, leading to a consistent final product.
- The system seamlessly integrates admixtures, enhancing performance without additional processing time.
- High-Capacity Pumping Power
- The colloidal mill doubles as a powerful pump, ensuring fast, efficient grout delivery.
- A 30 PSI discharge pressure and 224 GPM flow rate make it ideal for high-demand applications.
This cutting-edge colloidal mill is a core component of our grouting equipment lineup. You’ll find this exceptional technology in all of our grout mixers, including the PD1011H, PD411H, and our fully automated grouting systems. Our line of grout mixers and high shear colloidal grout plants ensure that every project benefits from the same industry-leading mixing performance, delivering stable, homogeneous grout with unmatched consistency.

The Future of Grout Mixing Technology
The construction and geotechnical industries demand higher efficiency and better quality materials than ever before. As projects become more complex, the need for reliable, high-performance grout mixing technology continues to grow.
Our high shear colloidal mixer represents the future of grout production. With cutting-edge engineering, precise control, and unparalleled efficiency, it is the best solution for producing stable, homogeneous, and high-strength grout.
If you’re looking for the most advanced grout mixing technology available, our system is the clear choice. Contact us today to learn more about how our high shear colloidal mixer can improve your operations and take your projects to the next level.