Flottweg Sorticanter - Model K4D/K6E - Decanter Centrifuge Technology for Plastics Recycling
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Businesses with an increasing focus on environmental protection and recycling demand new, innovative solutions. This prompted Flottweg to develop the Sorticanter for the processing of plastics. Naturally occurring raw materials such as plants, coal, natural gas and crude oil are the basic materials for the production of plastics. These raw materials cannot be recovered through processing in chemical steps. The recycling of plastics is therefore an issue for every environmentally conscious person. The Sorticanter makes it possible to make a contribution to environmental protection in accordance with the principles of ecology and economy.
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Product Details
The centrifugal force generated enables the Sorticanter to separate different types of plastic from each other. This enables operators to achieve the highest possible purity of plastics. Collecting and recycling plastics also reduces disposal costs and mountains of waste.
Flottweg Sorticanter has been processing a wide variety of plastics since 1995. The Sorticanter has impressing performance and exceptional quality and durability.
How does the Sorticanter Function?
When processing plastics (waste, plastic fibers and light packaging), it is important that the individual plastics are of a single material type. Many plastics differ in their density. For this reason, the so-called swim-sink separation process has proven to be efficient. In this separation process, a separation liquid is used (usually water), whereby the specific weight of the liquid lies between the weight of the two types of plastic to be separated.
In a container, the 'heavy' plastic with the higher density sinks to the bottom, while the lighter plastic with the lower density floats on the liquid.
The same principle is also used in a centrifuge. In the container, separation is by gravity (1 g), while in a centrifuge the plastics are separated by centrifugal force (a multiple of the earth’s gravity). Sorting in a centrifuge is therefore much faster and the sorted plastic phases are much drier. The 'heavy' plastic phase is centrifuged onto the bowl wall and from there conveyed by the decanter scroll to the discharge (heavy phase). The 'light' plastic collects on the liquid. The liquid flows off along the scroll and takes the light plastic particles with it. A special scroll design ensures that even the light phase is conveyed in the direction of the solids discharge (light phase) and dehumidified. The liquid runs off under pressure via an impeller.
Product Features
- Better product quality and thus higher value of the end product
- Separation of mixtures of substances which cannot be separated by static separation (fibers)
- Separation of particles that are smaller than 1 mm
- Additional post-dewatering (centrifuge) is not required
- Low fresh water consumption
- Minimum personnel expenditure and thus cost savings for the operator
- Low thermal energy consumption
- Usually 8000 hours operating time per year
- High availability
- Quality Made in Germany and high engineering expertise
- Air bubbles and other disturbing effects do not have an influence on separation
- Minimum personnel deployment
- Low maintenance requirement
- Low odor nuisance due to closed system
Features for Process Optimization
Decanter scroll
The scroll is the conveying tool in the decanter or Tricanter®. It rotates at a differential speed (in relation to the bowl) and conveys the settled solids in the direction of the solids discharge. Many years of experience and the innovative spirit of our engineers have made possible the special Sorticanter scroll design.
Decanter bowl
The medium reaches the maximum speed in the decanter bowl, which causes the solids to settle on the inner wall of the bowl. The decanter bowl of the Sorticanter is specially designed for plastics recycling. For example, it has a bell insert to transport the light phase out of the liquid.
Simp Drive
The Simp Drive drive regulates the differential speed between the decanter bowl and scroll as a function of the prevailing scroll torque. The high bowl speed and the precisely regulated differential speed ensure a high throughput rate.
Technical Data
K4D
- Dimensions [mm/ft]*: 3400x130x1100 / 11,15x4,1x3,67
- Weight [kg/lb]*: 3050 / 6710
K6E
- Dimensions [mm/ft]*: 5100x1800x1300 / 16,79x5,81x4,13
- Weight [kg/lb]*: 9750 / 21450
* The values are approximate and may differ from the actual values.
Application Area: Plastics Processing
Plastics recycling
In plastics recycling, the purity of the material to be processed plays a central role. The separation is carried out quickly and efficiently by means of a centrifuge.
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