Challenge
A C&D recycler started in the recycling business a number of years ago. The customer went out and purchased a used portable screen and pick belt to make a small recovery system. Once they started sorting the customer discovered that he was going to need a much larger system than the used one he had.

Approach
The recycler engaged the General Kinematics recycling team to develop a larger capacity sorting system capable of handling his future recovery needs that would utilize some of their existing equipment. The system had to fit within the current constraints of their existing building.

Solution
The GK recycling designed system comprises of a large 72” wide by 38’-0 long Finger-Sreen . The oversized material from the Finger-Screen convey onto the customer’s existing pick platform which has four bunkers. The undersized material transfers to another GK Finger-Screen via a 48” wide belt conveyor. At this transfer there is an in-line magnetic separator for the ferrous metals.

The fines from the second Finger-Screen are discharged onto a belt conveyor and over to a small Single Knife GK De-Stoner air classifier. The small De-Stoner removes the rock and non-ferrous metals into one pile and the dirt and fines into another pile. The overs from this secondary Finger-Screen are taken to a larger Dual Knife De-Stoner.

GK’s Dual Knife De-Stoner makes the same separation as the single knife De-Stoner but can handle the larger material size and capacity. The heavies that are separated consist of rock and non-ferrous metals. There are two QC stations that are located at this point to negatively pick any wood that might have dropped with the rock. At the discharge end the De-Stoner splits the light material into two fractions: large wood pieces and light plastics and residual materials.

Result
The customer is currently using the system to process C&D material with very good results. Separation efficiency utilizing the two GK Finger-Screens and the Single Knife De-Stoner air classifier have maximized separation efficiency and volume while reducing manual sorting requirements and system maintenance.

 

 

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