DJE - Recycling Plastic Containers (IBC`s,HMHD Blue Drums)
From Recycling Systems
Probably the most versatile wash recycling system DJE offer for recycling Plastic containers (IBC's, HMHD blue drums,) and line capable of processing a number of materials. With increased demand for diverting plastics from land fill coupled with high commodity value for recycled single stream plastics these Plastic containers (IBC's, HMHD blue drums,) systems are becoming increasingly popular in the UK market place. All systems we supply are bespoke and designed on individual factors such as the polymer make up of the in feed material and the various types of contamination present.
Each system features 4 phases:
Each system features 4 phases:
Size Reduction
The first stage in loosening contamination is the shredding/granulating process. Depending on the requirement we will use one or a combination of the following machines:
- Granulator
- Single Shaft Shredder
- Twin Shaft Shredder
- Four Shaft Shredder
Plastic containers (IBC's, HMHD blue drums,) are reduced to a pre-determined particle size. Much of the contamination, in particular labels, is separated from the film at this stage making it easy to remove during the washing stage.
Washing and Separation
We design and build systems to suit a wide range of contamination levels. From lightly contaminated plastic to heavily contaminated oil and food contaminated plastic, we have a range of washing machinery to remove almost all kinds of contamination and to separate polymers by type. We use a combination of the following machines:
- Magnetic Seperation
- Trommel
- High Speed Friction Washer
- Sink/Float Tank
- Boiler Tank
Depending on the level of contamination we design a system that will clean the specified material consistently and efficiently. For cleaner grades one or two washing stages is sufficient to clean the material, for heavily contaminated plastics further washes stages may be required. In the case of food and oil contaminated plastics then chemical washing may be necessary to clean the material ready for drying. We use a series of sink float tanks for separating the PP and PE from the various sink materials.
Drying
The final, and possibly the most important, stage of the system is the drying stage. High moisture levels reduce pelletizing efficiency and can be detrimental to the quality of the final pellet. Different pelletizing machinery can tolerate different levels of moisture; we can design systems with a range of moisture outputs, in most cases below 1%. We use a combination of the following machines:
- Horizontal Centrifugal Dryer
- Screw compactor
- Pipe Drying System
- Air classifier (also serves to separate light materials such as film and fibre)
Different types of rigid, in particular materials with different thicknesses, will require different types of machinery to reduce moisture to an acceptable level. While most requirements are at around 3~4%, we can bring that level down to under 1% if necessary by utilizing a more comprehensive set of drying machines. In cases where the material is highly contaminated with film and other light fractions it will need to go through an air classification process to separate the light fraction from the heavy. This is typical of mixed stream plastics such as a mixed rigid grade where film and other low density materials need to be separated prior to moving on to the pelletizing stage.
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