How do Gravity Separators Work?

Before moving to how a gravity separator works, let us understand what a gravity separator is. A gravity separator is used for the separation of any kind of kernel and granular product of almost identical size but with different weights. The gravity separator is utilised when the limits of air-aspiration systems and screening are reached.

In the separation process, there are two main stages: Stratification and Separation

  • Stratification:All separators have an inlet with an adjustable feed rate. The material is fed onto the gravity separator’s reciprocating grading deck, which has a special woven wire mesh surface. All granular products are passed through the inlet. For extremely fine products, a special fabric deck is used.
  • Separation:Due to the reciprocating motion of the inclined deck the heavy product will walk uphill to the highest side, whilst the lighter product will drift down towards the low side. Simple adjustments can be made in the end tilt/side tilt/deck speed and volume of air passed through the product while the machine is still running. This will dictate the nature of separation and throughput. Making adjustments while the machine is still in use is easy and simple. This enables a combination of control adjustments to result in a very fine separation at the end of the machine, where the split will be made with adjustable knives or sliding chutes.

Gravity separators find extensive application in agriculture. They are used for removal of impurities, insect damage, admixture and immature kernels from wheat, barley, oilseed, rape, peas, beans, cocoa beans and linseed. They can be used to separate and standardize coffee beans, cocoa beans, peanuts, corn, peas, rice, wheat, sesame and other food grains.Gravity separators are used to remove viable or valuable components from the recycling mixture i.e.: metal from plastic, rubber from plastic, different grades of plastic, and these valuable materials are further recycled and reutilized.

The types and application of gravity separators are vast. There are so many advantages and uses of gravity separators. From granular products to heavy liquids, a gravity separator can help in effective separation.

Spectrum Industries is one such gravity separator machine manufacturers, exporters & suppliers.