Soil High Shear Dispersion Blade
Replacement Blade for mixing apparatus to replace damaged or worn out mixing blade. The blade has a 3 edge design that meets ASTM and AASHTO standards for soil hydrometer tests.
Features:
Meets Test Methods:
AASHTO T88
ASTM C 775
ASTM D 422
Accessories:
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Dispersion Cup meets test method requirements
Meets Test Methods:
AASHTO T88 ASTM C 775 ASTM D 422
The Soil Dispersion Blade is a replacement blade to replace damaged or worn out mixing blades on the mixing apparatus. With its 3 edge design this blade mixes thoroughly meets ASTM and AASHTO standards for soil hydrometer tests.
Attaching the replacement blade to the mixing apparatus is easy, so replacement is a snap. Use this blade to mix soil samples and get accurate results for testing purposes.
Also available as an accessory for the Soil Dispersion Mechanical Mixer is the Dispersion Cup. This cup meets test method requirements for AASHTO T88, ASTM C 775, ASTM D 422. It is designed for optimal performance and accuracy during hydrometer testing.
For all your soil testing needs we have soil testing supplies. Whether you need hydrometer analysis test equipment or other testing tools we have you covered. Our products meet industry standards so you can test soil easily.
Soil testing requires accuracy and precision. That’s why our Soil Dispersion Blade and accessories are designed and manufactured to meet industry specifications. You can count on our products to get you accurate results.
Go to our website to see our full range of soil testing supplies and hydrometer analysis test equipment. We have what you need to test soil and get the data for your project. Contact us for all your soil testing needs.
Overview
Dispersion blades are used in many industrial mixing applications such as high speed dispersion, blending and mixing with high speed mixers. These blades break apart particles, mix materials and create a uniform dispersion.
High shear mixing is critical when comparing different mixing techniques, especially when de-lumping powders in liquids. In this article we will look into the world of dispersion blades, the types, materials, construction and maintenance. We will also look into how to choose the right dispersion blade for your application and troubleshooting.
What is Dispersion and How Does it Work?
Dispersion is a high speed, high shear process that breaks down particles or agglomerates into smaller, more uniform sizes. This process is used in many industries such as paints, inks, chemicals and pharmaceuticals where uniform particle size is critical for product quality and performance. Dispersion works by using a high speed disperser blade to create a vortex that draws in the particles and breaks them down through intense shear forces. The blade’s design, size and speed all play a critical role in the dispersion process. By optimizing these factors manufacturers can get consistent and efficient dispersion and get the final product to meet the specifications.
What is a Dispersion Blade?
A dispersion blade is a mixing blade used in high speed dispersion applications where disperser blades play a key role in the mixing and dispersing process. It creates high shear forces to break apart particles and mix materials. Dispersion blades are used in industries such as paint, ink, chemical and pharmaceutical where high speed mixing and dispersion is critical. Different designs such as saw-tooth disc and rotor/stator mixers operate at different tip speeds to achieve different shear and flow characteristics. They come in various shapes, sizes and materials each for specific application and mixing requirements.
How to Choose the Right Dispersion Blade
Choosing the right dispersion blade is key to getting optimal dispersion results. The blade’s design, size and material all impact its performance. For example a larger blade diameter and higher tip speed will generally produce more shear forces and better dispersion. But the blade’s design also needs to match the specific application and product being dispersed. For example a blade with vertical teeth may be better for high viscosity products and a blade with a smooth edge may be better for low viscosity products. By choosing the right dispersion blade you can get efficient mixing and better product quality.
Soil Dispersion Mixers
When choosing a dispersion blade for your soil dispersion mixer you need to consider the pumping action to get effective material movement in the vessel:
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Blade diameter: 1/3 the diameter of the mixing vessel.
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Blade size: Proportional to the mixing vessel size.
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Material: Compatible with the materials being mixed.
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Shear rate: Designed for the shear rate required for your application.
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Pumping capacity: The blade should have enough pumping capacity to mix and circulate the materials.
Mixing techniques that produce high pumping action with minimal shear are critical. This prevents heat build up during mixing and is especially important in coatings formulation.
Factors that Affect Dispersion Performance
Several factors can affect dispersion performance, the blade design and size, the disperser speed, the material being dispersed and the temperature of the mixture. For example increasing the disperser speed will increase the shear forces and better dispersion but will also increase the risk of overheating and equipment damage. Similarly a larger blade will increase the pumping capacity and better dispersion but will also increase the energy required to run the disperser. Understanding these factors and how they interact will help you get the best results from your dispersion process.
Materials and Construction of Dispersion Blades
Dispersion blades are made of stainless steel, aluminum or other hard materials. The construction of the blade is critical as it affects the mixing performance and durability. A triple shaft mixer which combines an anchor agitator, saw-tooth disperser and rotor/stator offers better performance in dispersing inorganic pigments in epoxy coatings. Some features of dispersion blades are:
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Vertical teeth: To create high shear forces and break apart particles.
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Curved or angled high vane blades: To create specific laminar flow pattern and mixing action.
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Reinforced high vane blades: For high speed mixing and heavy loads.
Safety Precautions for High Speed Blending
High speed blending can be dangerous if precautions are not taken. Operators should always wear personal protection gear, gloves and safety glasses when working with high speed dispersers. The disperser should also have a safety guard or cover to prevent accidental contact with the blade. The disperser should also be well maintained and inspected regularly to ensure it’s in good working condition. By following these precautions you can minimize the risk of accidents and have a safe working environment.
Advantages of Dispersion Blades
Dispersion blades offer improved dispersion efficiency, better product quality and reduced processing time. By using a high speed disperser blade manufacturers can get more uniform particle size which can improve the performance and stability of their products. Dispersion blades can also be used to mix and blend a wide range of materials from low viscosity liquids to high viscosity pastes and powders. In short dispersion blades are a must have for any manufacturer who wants to improve the quality and efficiency of their mixing and blending operations.
Troubleshooting and Maintenance for Dispersion Blades
Maintenance and troubleshooting is critical to get the best performance and extend the life of your dispersion blade. Here are some common issues and solutions:
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Blade wear: Check the blade for wear and tear. Replace the blade if necessary.
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Imbalanced mixing: Check the blade balance and adjust or replace the blade if necessary.
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Not enough mixing: Check the blade size and shape. Adjust or replace the blade if necessary.
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Clogging: Clean the blade and mixing vessel regularly.
So do that. Choose the right dispersion blade for your job. Follow the maintenance and troubleshooting.
