There are no doubts about possibility of processing electric motors since up to 98% of its overall weight can be recovered, transforming it into secondary raw material. The market is extremely open at this time: construction, transport vehicles and technology greatly need for these metals. From a processing standpoint, the electric motor is not an “easy” waste due to its highly wear-causing features that puts pressure on the rotors, grilles and blades of the recovery plants. At the same time this scrap features a large range of different sizes, from an overall weight ranging from 10 kg to 40 kg and the processing cycle changes based on the size. Companies processing this product must definitely pay the utmost attention to the solidity of their breakup and grinding machinery. At Panizzolo, as direct users, we know only too well the issues related to wear and strong stress that the components, welds and steelwork are subject to.

This is why our hammers and armours are made in special anti-wear castings specifically designed jointly with the University of Padua – for the processing of bulky waste. The sorting of the outfeed granule is just as important. General sorting is not acceptable for foundries and steel mills as it causes problems during the various material casting stages, such as what occurs in foundries when copper residues lead to important defects in iron castings. This is why the Panizzolo refining systems have an advanced separation stage, to complete the grinding cycle, achieving a high quality final result In this regard, the latest technological updates have led us to insert a high precision optical sorter.

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Waste electric and electronic equipment, abbreviated WEEE, is a waste growing at a high rate which was processed inappropriately in the past. In recent years, industrial economies and a technology-dependent lifestyle have brought about a great accumulation of this type of waste and the need for a specific treatment aimed at recovering the valuable materials present in electronics and microelectronics. Different types of processing cycles are expected depending on the type of WEEE – mainly divisible between household, commercial and technological – going from the recovery of the electric motor and ferrous

components to the valorisation of those commonly known as “rare earth elements”. Panizzolo plants join in processes aimed at recovering steel, brass, iron, aluminium, plastic and copper. These metals are found in power supply units, electric cables and various types of components and require a preliminary mechanical sorting, subsequent grinding and quality sorting.

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The treatment of solid urban waste includes an initial stage consisting of dividing solely plastic materials from components containing metal. Composite waste follows a primary grinding route, magnetic sorting and density sorting, so as to extract iron, aluminium, copper and brass. The non-metal residues left over can again be treated with specific cycles or handed over to the incinerator.

Here too, like in other recycling processes, sorting distinguishes between general production and quality production which aims at maximising the yield of waste in terms of quantity and quality of the extracted secondary raw material.

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Tins include metal boxes and cans, but also glass bottle caps, waste that features a very high concentration of metal and only 1% of residual materials. Among the shelf-life solutions proposed by large-scale retailers, the tin can remains the perfectly recyclable enclosure providing an ideal ratio between raw material obtained and energy used. These materials can practically be recovered without end and, respect to the primary production of new containers, recycling significantly reduces energy consumption and CO2 emissions with great advantages on an ecological and economical level.

The recycling of cans and jars allows to recover metals such as steel, tin and aluminium. During the recovery stage, these metals are ground to clean them from damp, paper and plastic labels and paints, thus obtaining a secondary raw material in compliance with current standards. The metal obtained is recovered for steel mills and needs careful sorting to eliminate all the impurities present and to achieve an increase in density.

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Metal scrap has always been a waste of great interest due to its high concentration of metal – in some cases reaching 90% of its overall weight. This led in the past to many companies founding their business on the marketing of metal scrap. In recent years, the recycling of this type of material is even more quoted due to the increase in prices of raw materials and a progressive conversion of these businesses to a complete treatment process. In fact recovery represents an important occasion from an environmental standpoint and a more eco-friendly solution than the brand-new production of metals, and this is not all! The conversion from only marketing to a complete metal treatment cycle entails a variety of economical advantages and the possibility of opening new perspectives for one’s business and new concrete trade opportunities.

The exponential improvement in recycling processes and innovative grinding and sorting technologies allow our metal transformation plants to return a homogeneous material with a high specific weight, ideal to be put back on the market. It is fundamental that they comply with all of the conditions set forth by EU standards to become secondary raw material and no longer fall under the waste category. The high quality of our outputs is guaranteed and is ideal for the direct sale of iron, copper, brass, steel and aluminium to foundries and steel mills.

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Mixed metals are well represented by complex waste such as a plant’s electrical switchgear. You can find the metal enclosure as well as many components such as switches, fuses and cables, that need to be thoroughly divided into ferrous and non-ferrous fractions or other. Adequately breaking down and treating mixed metals to then put a high quality recycled metal back on the market is an economical and eco-friendly interest.

The recovery process of mixed metal scrap consists of sequential shredding, volumetric reduction, grinding, sorting and separation stages of the output granules.

Last generation technologies applied to our metal treatment plants allow to fully recover secondary raw materials – up to the smallest ferrous fractions and above all metals such as aluminium, copper and brass – in full compliance with standards against environmental pollution. We know the value of an efficient cycle both from a production and energy consumption standpoint since we are direct users of machinery and of mixed metal recycling plants.

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An ever more large variety of objects, products and components are made in aluminium or in its primary and secondary alloys. Its features make this metal essential both in the construction of many common objects (bicycles, windows, coffee makers, etc.) and for technologically advanced and complex components (trains, cars, computers, aircraft and still more). As it does not exist in nature, aluminium has been recycled since 1900. Particularly in today’s circular economy it covers an important role. The recycling of aluminium, whether it be profile or casing, means dividing it from all the components with which it is assembled. One of the most common examples is the recycling of aluminium window frames which include screws, glass, handles and plastic with thermal functions.

Grinding operations can completely separate the additional materials so as to preserve the primary alloy aluminium, an ideal solution with respect to a process that entails casting that could create less valuable secondary alloys. X-ray sorting devices are used in our recycling plants for better selection of the aluminium alloy quality. They separate primary aluminium from secondary aluminium, an essential distinction for better yield during casting at the foundry.

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The Panizzolo refining plant uses patented hammer mills of the series RAF-M and RAF-F. These are efficient and highly productive systems capable of simultaneously processing wear-causing steel and inerts, both during the grinding and granulation stage. The processed metal scrap can cause significant wear, thus undermining the actual yield of processing over time. On the other hand Panizzolo refining plants are specifically designed for even wear of the individual components, so as to avoid breakage or sudden drops in production. Furthermore use of special castings makes the hammers and armours more durable. The main type of waste treated by the Panizzolo refining plant includes:

At the end of the treatment cycle, almost all non-marketable byproducts are eliminated, retrieving only the clean metal granules, classifiable as secondary raw material.

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If steel mill slag was considered special waste up to a few years ago, today this industrial byproduct is a valid source of recovery of metal and non-metal material. There is a growing demand for aggregates in the construction sector, while quarries are diminishing. Following this trend, the slag from special waste has been reclassified as recoverable waste.

This allowed us to discover that when properly treated, slag possesses better physical and mechanical properties than other materials and inerts and is rich in metallic residues. This waste can therefore recover its direct use without being sent to a landfill. It can be used in a wide range of options such as materials for construction and other industrial sectors.

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Paper mill pulper is the waste produced by the paper industry in the waste paper recycling . After recovery of the cellulose fibres, a non-recyclable mixed material mixture remains which used to be sent to a landfill with high waste disposal costs. Today it can undergo a recovery process, thus reducing the waste sent to a landfill and recovering still reusable materials.

Thanks to ever more specific and advanced technologies, paper mill waste treatment cycles can be implemented. These operations have reasonable costs and are performed in automated mode, again recovering the metals contained and reintroducing them into the production cycle.

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