High shear dispersers are utilized for breaking down particulates to produce homogeneous fluids across a diverse set of industrial applications. Evenly imparting pigments into paints or inks, pulverizing solid food ingredients into condiments or pastes, and producing hand creams or other personal care and cosmetics products are common tasks for this versatile product group.
INDCO provides a complete line of dispersion equipment from fractional horsepower bench top to 20-horsepower floor-mounted models for laboratory, pilot plant and production operations. Each disperser is designed and ruggedly constructed for reliability and long life. We use top names such as Baldor, Leeson & Marathon electric motors as well as Gast air motors in our drive units. Stainless steel is standard for all wetted parts on our dispersers.
Consider our small ½ to 3 horsepower HS-105, HS-115, HS-315, HS-320 or HS-300 electric dispersers for batches up to 5 gallons. These models offer varying blade and impeller options to suit your specific application. Pneumatic lift mechanisms make batch container changes easy. Variable speed and optional digital tachometers maximize process control and precision for working with multiple viscosities. If an air motor is required, choose our HSD01, 02, 05 or 06 fractional HP dispersers for up to 1 gallon or our HSD15A, 16A, 40A or 41A dispersers for larger 5 gallon batches. For larger batch sizes up to 200 gallons see the HS-10 and HS-20 models. These floor-mounted models available with mechanical speed controls or variable frequency drives (VFD’s) offer the latest in AC variable-speed drive technology. Container holder chains and shaft shrouds provide operator safety while dispersing at high RPM.
As a rule of thumb the dispersion blade diameter should measure 1/3 the diameter of the vessel. The optimum position of the blade is one blade diameter above the tank bottom. The maximum depth of the material should not exceed three times the diameter of the blade. The minimum depth above the blade should not be less than that below the blade. Round vessels almost always provide better dispersion than square vessels because they have no “dead areas” in the corners.
All dispersion blade designs generate high shearing energy, which is the hydraulic tearing apart of particles. However, the Design C blades shear slightly less and generate less heat than the others due to the lower number of teeth per blade.
Shear is to a great extent determined by the tip speed (or rim velocity) of the blade; the faster the tip speed the higher the shear. Tip speed should generally be from 4,000-6,000 feet per minute. The diameter of the blade will determine the RPM the shaft must turn to give the recommended tip speed. To calculate tip speed in feet per minute, multiply shaft RPM x .262 x blade diameter in inches.
INDCO’s dispersers are backed by a 1-year manufacturer’s warranty. Call us at (800) 851-1049 for direct technical assistance or a quote for your next disperser.