Olive residue is a rejected product from the production of olive oil. Such a product is fundamentally composed of peel, pulp residual and fragments of the core.
This product is used in various ways, but mainly as alternative fuel.
For this purpose the product must be cleaned-up of most of the pulp (< 2%) and peel.
Manfredini & Schianchi propose plants for the classification and grinding of such material, and eventual grinding after the phase of cleaning the pulp.
The stages of the M&S plant are the following:
Cleaning separation: During this stage, through the use of tilted screens, the residual peel is separated from the core.
Particle size classification: In this stage the core fragments are separated in the following way:
Particle sizes higher than 2 mm: such parts of production, of high value, are destined to private use (for example; pellet heaters).
Particle sizes lower than 2 mm: production destined to industrial use.
Grinding/Refining stage (optional): The core < 2 mm destined to Industrial use is, if necessary for productions reasons, ground further by means of hammer or rotary ring mills (depending on requirements) so as to reach a particle size < 1 mm.
The main advantage of the M&S plant is that of operating the separation & classification stages by using systems that allow the obtainment of large productions with reduced screening surfaces (example 20 mc/h with screening surface of 4 sq. metres with an energetic consumption of 0,2 kW/h per ton).
The M&S Technological Laboratory through the use of their own Pilot Plant, are able carry out all the necessary tests to guarantee the correct plant dimensioning based on the material to be treated and the production requirement of the Customer.