Optical sorting

Optibag plants can be built in many different forms and configurations to fulfil specific requirements. They can be built to facilitate future expansion in terms of increased capacity and/or the addition of fractions in an efficient and finacncially viable manner. The following figures are general. To obtain exact details for a specific project, a detailed calculation will be based on where the plant is located, any modifications to the existing premises, the exact number of fractions, number of available operational hours, how the deliveries look as well as the exact annual capacity required. 

It is important that this is linked to the desired end result and the integrity and purity of the fractions.

An Optibag plant consists of 1-4 sorting lines. Each individual sorting line has a sorting capacity of 7-9 tonnes per hour. This means that a plant with three sorting lines which are used in one shift have a theoretical annual capacity of 50,000 annual tonnes.

Sorting efficiency/Sorting accuracy
These two factors are the most important in relation to optical sorting. It is of the utmost importance to include the plant’s efficiency and accuracy in a tender. The following diagram illustrates how Optibag calculates these factors.

Power consumption
A ”normal” plant with three sorting lines for two fractions has an installed power of approx 140 kW. The utilized effect is however considerably less, approx 30-50% of the installed power.

 The power requirement obviously varies depending on the number of lines, fractions, etc. However, experience has shown a requirement equivalent to 3-6 kW per tonne by optical sorting.

Utilization rate
An optical sorting plant is designed so that when normally staffed it can be run without interruption/pauses for breaks, shift changes, or similar. Our experience show that utilization is 98%.


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