C&D and Industrial waste

The main stages
in sorting industrial waste and construction
& demolition waste (C&D)

Step 1
Step 2
Step 3
Step 4
Step 5
Step 6

Step 1

Supply system

The flow of waste entering the line is automatically regulated to ensure a constant volume of waste throughout the process. This regulation ensures that the facility operates at its optimal rate, improves working conditions for the operators in the control cabin, and maximises the line’s uptime.

Step 2

Granulometric screening

A combination of two vibratory screens (a Taper-Slot primary screen with rigid meshing and a secondary screen using flip-flop technology) separates the flow by size. The robustness and vibratory capacity of these screens are essential for correctly segregating the different portions of waste.

Step 3

Separating light from heavy waste

Next, the flow is “cleaned” by an aeraulic separator that sucks up the light items of waste. The heavy items move on to step 4 (sorting by material), while the light waste can be sent for processing into solid refuse-derived fuel (RDF).

Step 4

Sorting by material

A combination of optical sorting machines makes it possible to recycle or reuse the different materials (wood and plastic in the case of industrial waste, for example; bricks and plaster in the case of C&D waste, etc.). Overbands and eddy current separators make it possible to recycle the various metals.

Step 5

Cabin-based quality control

We often recommend a cabin-based quality control to optimise the recovery rate. It can be carried out manually or in combination with robots developed specifically for sorting bulky and heavy wastes.

Step 6

Creation of refuse-derived fuel (RDF) or solid recovered fuel’ (SRF)

For some types of waste, and in particular industrial waste, it can be viable to work on the flow of light waste items with a view to processing them into refuse-derived fuel or solid recovered fuel. If so, an optical sorting machine and a metal detector are necessary to extract PVC and residual metals from the waste flow.

What is construction & demolition waste?

The bulk of construction waste consists of inert waste ; the remainder can be treated as industrial waste. Inert waste is made up of stones, earth and excavated material, concrete, bricks, roof tiles, wall and floor tiles, paving, plaster, etc.

This inert waste, once cleaned, can be used as quarry filling. The other recoverable materials are generally sent to the appropriate treatment channels.

What is industrial waste?

Common industrial waste (CIW) or post-consumer waste (PCW) is all of the waste generated by companies, manufacturers, retailers, craftspeople and service providers. Industrial waste is primarily the product of administrative and office activities (equipment, furniture, consumables, packaging), general building and green space maintenance, waste produced by worksites and by production and maintenance operations.

Industrial waste consists essentially of metals, paper and cardboard, glass, textiles, wood, plastics, etc., and it is highly recoverable. Lastly, part of the post-consumer waste that is rejected as industrial waste can be turned into SRF. In other words, it can used as the basic ingredient for producing solid recovered fuel (SRF).

Sorting facilities in a variety of formats:

Depending on the type of incoming waste, the type of outlets considered and the investment capacities, the facilities for sorting post-consumer waste or construction waste may display more or less complex variations, comprising all or only some of the steps presented above. The AKTID team will present the various possible options to you and provide the guidance you need to define the solution best suited to your project.

An Aktid sorting facility for post- consumer or construction waste brings you:

Facilities and a process recognised for their quality and robustness
A team of experts in this type of waste to guide and support you, from defining your needs through to becoming perfectly acquainted with operating your facility
Tools are available for monitoring and optimising your plant’s performance (e.g. ABI)
A customer service team can provide support for your repairs, maintenance or upgrading operations, and advise you about enhancing your sorting centre’s performance.

Close- up on : vibratory screens for heavy waste

ACTION EQUIPMENT, a US-based manufacturer of vibratory machines for over 40 years, has for many years been AKTID’s exclusive partner for the European market.

Its TAPER-SLOT® vibratory screen delivers outstanding robustness and efficiency.
AKTID incorporates it into all of its sorting facilities for heavy or complex waste, such as industrial, bulky or combustible waste, construction waste, wood, tyres or metals, etc.

The screen meshes’ patented design, combined with the unparalleled vibration amplitude, make it possible to position this machine with a slight tilt.
As a result, the materials spend much longer in the machine, they are separated out as efficiently as possible and there is very little snagging or congestion.

Close-up on: flip-flow vibratory screens for fine and damp materials

ACTION EQUIPMENT, a US-based manufacturer of vibratory machines for over 40 years, has for many years been AKTID’s exclusive partner for the European market.

Its VIBRA-SNAP® single- or double-deck screen is mainly used to create a trampoline effect that separates out complex, heterogenous fine materials with a (very) low granulometry (roughly 0.1 to 60mm), such as industrial waste, bulky waste, construction waste, rubble, automotive shredder residue (ASR), compost, wood, SRF, etc.

The quality and flexibility of the polyurethane screening mats patented by the manufacturer, together with the machine’s specific design, release the greatest kinetic energy on the market with an acceleration of over 50g.

These screening mats can therefore be used on damps flows while at the same time maintaining top separation performances and minimising the risks of clogging or catching unwanted materials.

Close-up on : rotary sorting table for industrial waste

The rotary sorting tables developed by AKTID are original, patented, user-friendly items of equipment that provide excellent working conditions in small spaces.

The flexibility of continuous or discontinuous operation is a major plus-point for this facility. It makes it possible to adjust the number of sorters to the incoming production flow, while at the same time offering a very wide field of vision for optimal workstation user-friendliness.

Each of these sturdily designed models is fitted with a very thick and shock-resistant steel tray.

It is ideal for lines handling up to 10-15,000 tonnes/year, to recover a maximum of mixed materials such as industrial or bulky waste, or high-value-added materials (e.g., WEEE).