DENSITY SEPARATORS |seed sizer|seed sizer|corn sizer|bean sizer Since 1930, Oliver has provided seedsman worldwide with expertise andequipment to make the most precise density separations. A complete line of density separators with capacity rates up to 43,000 pounds per hour are available. Oliver Gravity Separators are known for excellent separation efficiency on green coffee. The "Oliver" is rated as "The Best Separator" all around the world, and is the choice for the discerning green coffee processor. If your screened / sized material still has contamination, density separators or stoner separates same size particles by specific density. The most positive method of testing to determine the effectiveness of a gravity is through the use of a density separators Test, whether measuring in Pounds per Bushel, Pounds per Cubic Foot, Gram per Cubic Centimeter or Kilogram per Cubic Meter. By using this test, determine the difference in bulk weight per unit volume between the heavy and light product. The gravity should be set to obtain the maximum weight difference between the light and heavy products. The test weight of the heavy, middle and light fractions should be recorded along with the machine settings necessary to obtain this. This gives a written record of the operation of the gravity and the settings necessary to obtain that particular separation. These can be used as a reference when processing similar products in the future. Excellent applications for the Oliver density separators include:
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