Density Separation Equipment
Density separation equipment first appeared over a century ago when the fluidized-bed separator, then called the specific gravity separator, was invented by two of the founding fathers of Triple/S Dynamics, Edwin Steele and Henry Sutton. Constructed of wood, early gravity separators were originally developed to concentrate gold and other metallic ores without using water. By 1919, when a patent application for the technology was submitted, this new separator had found its way into many other dry materials markets, including field seeds, peanuts, peas, beans, corn, beach sands, coal, cork, chemicals and many other bulk solids. The density separation is achieved with basically two components, mechanical vibration and air fluidization. The gravity separator (also known as fluidized-bed separator, air table or density separator) makes a highly sensitive dry separation on the basis of one of three particle characteristics: density, size or shape. When two of these characteristics are controlled within certain limits, the gravity separator is unmatched in its ability to separate a complex mixture. Today, the Triple/S line of dry material density separators are being used in thousands of applications, from cleaning of leafy spices and peppercorns to reclaiming copper from scrap wire and cable.