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Metals Recycling

New conveyor feed boosts yield of Eddy Current Separator

​Product distributor replaces vibratory chute and prevents clogging

The conveyor feed recently developed by Goudsmit Magnetics consists of a conveyor belt feed that is supplied by a product distributor. This prevents clogging of the vibratory chute during the recycling process and increases the yield of non-ferrous metals. Sticky or damp product streams, such as incinerator bottom ash (IBA) and refuse-derived fuel (RDF) adhere to the surface of vibratory chutes, preventing them from distributing the product evenly. The product takes on a preferred orientation (the path of least resistance) preventing formation of a homogeneous layer, which results in reduced yield of non-ferrous metals.

Until now, a common solution to this problem was to clean the feed belt or vibratory chute at weekly or monthly intervals. This, however, means unnecessary downtime and extra maintenance. The true cause of the problem is the encrusted vibratory feeder. This newly developed conveyor feed with product distributor prevents this problem by creating a mono-layer that ensures full belt coverage. This means maximum utilization of the capacity and separation efficiency of the magnetic separator, as well as longer service life of the conveyor. 

Mono-layer
A mono-layer is a product layer that has a maximum thickness of one piece; in other words, there are no pieces lying on top of each other. This is important for eddy current separation, because the non-ferrous pieces in the product flow are 'ejected'. If there were sand or a stone on a piece of metal, for example, there is a good chance that the EC separator would not eject the metal particle far enough to separate it from the product flow. Particularly for the 'fine fractions' (particle size: 0-10 mm) it is extremely important to create a mono-layer for maximum recovery of non-ferrous material. The system actually consists of three conveyor belts, each with its own task. 

Three conveyor belts
The first conveyor belt is at an angle and feeds the material until it reaches the product distributors or 'churners'. These turn through the material and distribute it evenly so it lies on the belt as a single mono-layer and completely covers it. This is an excellent solution for damp or sticky product flows with 0 - 50 mm fractions, such as incinerator bottom ash (IBA), refuse-derived fuel (RDF) and automotive shredder residue (ASR). If the amount of material being fed in exceeds the capacity, the excess material slides back down. This ensures a constant volume and continuous flow to the next processing step. 

The second conveyor belt (magnetic separator) is flat and transports the material towards the end of the belt and the magnetic head roller. Here ferrous parts are deflected and separated. The third conveyor (eddy current separator) is now supplied with an optimum material flow: a mono-layer, perfectly spread across the entire width of the belt and free from fluctuations in density. The ferrous metals are also removed so they do not interfere with the eddy current separation step. 

The material is now perfectly prepared and ready for the powerful 38HI eddy current rotor, with a gauss value of 3500 at the belt (2.4 mm thick). This high magnetic force is necessary for heavy pieces of non-ferrous metal, such as copper and brass. The end result of the complete machine: optimum ferrous and non-ferrous separation without time-consuming machine downtime for cleaning encrusted vibratory chutes. 

Eddy current separators 
Eddy-current or non-ferrous separators consist of a conveyor belt system with a rapidly rotating magnetic rotor at the end. The rotation speed of the magnets generates an induction field, creating a rapidly changing magnetic field (see video). The separation is based on the principle that every electrically conductive particle that is located in an alternating magnetic field becomes temporarily magnetized itself. Simply put: For a brief moment all the non-ferrous metals that pass the magnetic roller become magnetized themselves, causing them to be 'ejected'. This makes it possible to separate a great many non-ferrous metals and alloys, including aluminium, copper and brass. 

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C&D Recycling

Metso to expand NW Rapid crushing plant range

The NW Rapid series models are electric driven and they have Metso's IC(TM) Series crushing automation as a standard feature.

Metso is introducing new higher capacity models to its popular wheel-mounted Metso NW Rapid series. In addition to a bigger jaw crusher model, the NW Rapid units are now also available with a variety of robust cone crushers, including the first model with the MX crusher. Easily transportable using standard prime movers, over a thousand NW Rapid models have already been sold into aggregates and C&D recycling applications.

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Composting

Composting Council Research Education Foundation releases report on soluble salts in compost

Composting Council Research Education Foundation releases report on soluble salts in compost

Compost contains a multitude of essential nutrients for plant growth, such as nitrogen (N), phosphorus (P) and potassium (K), and can also be a source of organic matter. However, recent concerns and criticisms have been directed toward composts with a high concentration of soluble salts. Soluble salts refer to the amount of soluble ions, such as calcium (Ca2+), potassium (K+), magnesium (Mg2+) and sodium (Na+), present in compost. Soluble salts are measured indirectly and cumulatively through electrical conductivity (EC). 

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Industry News

Sierra International Machinery announces acquisition of Wolf Pack Enterprises and establishment of East Coast Service Center

Left to right: Jose Pereyra, John Sacco, Wayne Wolf, Antonio Torres and Doug Barnett.

Sierra International Machinery has announced the acquisition of Wolf Pack Enterprises, a heavy equipment service provider based in New Jersey, and the establishment of the Sierra East Coast Service Center. Wolf Pack Enterprises has been the preferred contract service provider for Sierra equipment since 2012.

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Fleets & Technology

Portable vehicle scales​ help heavy-haul carriers stay compliant

Heavy-haul carriers transport oversized objects using public roadways. While these loads may weigh hundreds of thousands of pounds, operators must still comply with permitted limits, while also completing their job safely. Intercomp has a variety of options to fill this unique application for a range of applications including construction, oil & gas, waste and recycling, heavy-haul transportation and electrical utility.

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Tire Recycling

Over $11 million in grants issued by CalRecycle to help fund tire recycling

Over $11 million in grants issued by CalRecycle to help fund tire recycling

The California Department of Resources Recycling and Recovery (CalRecycle) based out of Sacramento, has issued grants totalling nearly $11.1 million to 31 communities and nine businesses to fund projects to reuse and recycle waste tires. CalRecycle announced the grants January 4 under its Tire Incentive Program and its Rubberized Pavement and Tire-Derived Aggregate grant programs.

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EuPC publishes results of its 2nd survey on the use of recycled plastics materials

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C&D Recycling
Industry News

Anaconda Equipment joins McLanahan family of companies

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Plastics Recycling

​Nestlé Waters North America aiming for 25 percent recycled plastic in its packaging by 2021

​Nestlé Waters North America aiming for 25 percent recycled plastic in its packaging by 2021

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Tire Recycling

Goudsmit builds magnets for iron-free carbon black

Goudsmit builds magnets for iron-free carbon black

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Plastics Recycling

BASF making products with chemically recycled plastics for first time

Dr. Stefan Gräter and Dr. Andreas Kicherer showing a sample of pyrolysis oil and thus produced plastic in front of the Steamcracker.

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Paper Recycling
Plastics Recycling

SamurAI sorting robot finding success in the recycling industry

In the spring of 2018, Plessisville, Quebec-based Machinex introduced its new SamurAI sorting robot, which, according to the manufacturer, has since generated a lot of industry interest. Nearly six months after its launch, the response of the market has been very positive and nine robots have been sold to date. The first two SamurAI in Canada have just been installed in Quebec while six more robots will be installed by next year in Canadian sorting centers. Moreover, the company says they continue to have regular requests from customers who are greatly interested in this cutting-edge technology.

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Maintenance & Management

Electro Static Technology appoints Mathew Laufik as global sales manager

Electro Static Technology appoints Mathew Laufik as global sales manager

Electro Static Technology, the manufacturer of AEGIS Shaft Grounding Rings, and specialist in low- to medium-voltage motor protection technology, has appointed Matthew Laufik as Global Sales Manager.  In this new role, Mr. Laufik will be responsible for the sales of AEGIS products to motor repair shops, motor manufacturers and end users in a range of processing industries worldwide through the company's international sales organizations and distribution network.  He will also manage all sales, marketing, and customer service personnel.

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C&D Recycling
Environmental
Occupational Health & Safety
Solid Waste

Latest mobile dust suppression design features Tier 4 Final Gen Set

The DB-60 Fusion dust suppressor features a Tier IV Final-compliant generator.

BossTek has updated its family of self-powered dust suppression equipment with Tier IV Final-compliant generators, ensuring compliance in all 50 states and Canada.  BossTek made the announcement with the debut of the new DustBoss DB-60 Fusion, a field-proven suppression system driven by a high-reliability 25 HP electric motor and paired with a gen set powered by a heavy-duty 4-cycle indirect injection diesel engine.  Designed, engineered and assembled in the USA, the generator features a dual-containment fuel cell, heavy gauge lockable enclosure and oversized brushless alternator for easy starting.  

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