Aluminium has been recycled since the days it was first commercially produced and today recycled aluminium accounts for one-third of global aluminium consumption world-wide. Recycling is an essential part of the aluminium industry and makes sense economically, technically and ecologically. At the end of their useful life, all aluminium products retain some worth which guarantees that it is possible to create value by recycling them into new products. Efficiency of aluminium recycling thus translates into high recycling rates for the various applications.
Aluminium destined for recycling can be described with two categories: new and old scrap.
New scrap is the surplus material that is discarded during the manufacturing and fabrication of aluminium alloys (e.g. the splinters of sheet edge trimmings).
Most new scrap reaching the secondary industry comes directly from the manufacturing industry. It is usually of known quality and composition and often uncoated. It can therefore be melted down with little preparation. 100 % of the arising fabrication scrap is remelted by the aluminium industry.
Old scrap is aluminium material that is recovered when an aluminium article has been produced, used and finally discarded at the end of its useful life. Such scrap could be e.g. used beverage cans, car cylinder heads, window frames from a demolished building or old electrical conductors.
Old scrap comes to the recyclers via a very efficient network of metal merchants who have the technology to recover aluminium from motor vehicles, household appliances, etc. This is often done using heavy equipment such as shredders, normally together with magnetic separators to remove iron, and sink-and-float installations to separate the aluminium from other materials.
Both types of scrap are processed prior to melting to get rid off any contamination that may be present. They are centrifuged and dried to remove the oil and water that may be present and then magnetically separated from any present iron. Used beverage cans are processed to remove the interior lacquer coating and the outside product display printing inks.
The recycling of old scrap is normally carried out by secondary aluminium refiners, whereas new scrap is predominantly recycled through aluminium remelters.
Secondary aluminium refiners convert most of their materials into foundry ingot, generally based on the aluminium-silicon alloy system with additions of other metals such as copper and magnesium. These ingots, fabricated according to recognised national or international specifications, go into the manufacture of aluminium cast components. A significant share of the secondary aluminium refiners’ output is also delivered in a molten form by road tanker to large foundry users thus eliminating the need for further melting operations.
Alloy ‘hardeners’ are also produced. These ingots, with a high known percentage content of alloying metals, are used by other sectors of the aluminium industry such as primary smelter cast houses or remelt units located at semi-finished aluminium plants.
Domestic Aluminium (mixed grade any Aluminium that is not extruded)
Whole Scrap Auto Transmissions - Whole Scrap Auto Transmissions. Assorted automotive transmissions, free of torque converters.
Aluminium Engines and Gearboxs Irony Aluminium (40%-60% Aluminium)
Aluminum Extrusions - Aluminum Extrusions. Aluminum Extrusions shall consist of clean aluminum extrusions including window & door framesMust be free of iron inserts, screws and plastic, rubber or other foreign materials.
Aluminium stock pile
Litho Sheets - Litho Sheets. Litho Sheets shall consist of clean aluminum lithograph sheets (plates), may contain 1100 or 3003 alloys.Must be free of paper, plastic and excessive foreign materials such as ink.Equivalent to ISRI code TABLOID.
Utensil Aluminium - alluminium scrap. Utensil Aluminum shall consist of aluminum sheet and sheet utensils including cooking pots, must be free of iron & foreign materialsISRI code TAINT may be included in this grade
Cast Aluminum - TarryA, Trump, Tense,Teens and Zorba. Cast Aluminum shall consist of clean aluminum castings.Equivalent to ISRI code TENSE.
Cast Aluminum - Zorba. 1 £¬Zorba-Recyclable concentrates of shredded mixed nonferrous scrap metal in pieces-derived from fragmentizers for further separation of contained materials.
Aluminum Auto Wheels - aluminium auto wheels scrap. Clean, uncoated aluminum auto wheels of 356 alloy. Free from dirt, oil, and grease. Steel, valve stems and wheel weights have to be removed.
Old Mixed Aluminum - Aluminium Scrap. Assorted clean aluminum scrapISRI code TABOR is included in this grade.
Low Grade Irony Aluminum - Metalscrap . Low Grade Irony Aluminum shall consist of assorted scrap aluminum contaminated with Iron, the aluminum content must be a minimum 50% and iron may not exceed 50%Must be free of excessive plastics, oils and other materials prohibitive in the sweat furnace operation.
Remelt Aluminum Sows - Any analysis single pour. Remelt Aluminum Sows shall consist of remelted aluminum scrap from a sweat furnace operation & poured into a uniform slabs or sow blocks with a minimum weight of 500 lb., and a maximum weight of 2,200 lb..Must be free of slag or dross materials an prepared in a uniform material handleable form.Similar to ISRI code THROB.Price dependent on analysis
Paperbacked Alumifoil - Aluminium scrap. Paperbacked Alumifoil shall consist of aluminum foil laminated to paper or plasticmay not include vacuum metalized films
Used Beverage Cans (UBC loose) - used and crushed aluminum cans. Loose whole or flattened aluminum beverage cans, free from excessive dirt, liquid or other foreign materials. Equivalent to ISRI code TALAP or former code TALC.
Baled UBC - Aluminum can scrap UBC. Baled UBC shall consist of magnetically separated Used Beverage Cans that have been compressed into bales.Baled densities must be a minimum of 14 LBS. per cubic foot .Bale dimensions can range from 24'' to 40'' x 30'' to 52'' x 40'' to 84''ISRI code TALDON shall be included in this grade
New Beverage Can Stock - New Beverage Can Stock. New Beverage Can Stock shall consist of new clean pre-consumer aluminum can stock (printed or unprinted) and may include clips or punching skeletons, & cans in various states of production but may not include whole cans from packaging lines.Equivalent to ISRI code TAKE
Aluminum Turnings - Telics. Aluminum Turnings shall consist of clean aluminum turnings, borings or grindingsEquivalent to ISRI code TELIC.
Other Aluminum Scrap - aluminium heavy scrap angles and sheets. must heavy and clear
Other Aluminum Scrap - auto aluminum. offering rotors, armitors, aluminum housing with copper, field coils and stators- include copper.
Remelt Aluminum Ingot - light ingots (tranny housings). Remelt Aluminum Ingot shall consist of remelted aluminum scrap from a sweat furnace operation & poured into a uniform pigs or ingot blocks with a minimum weight of 25 lb., and a maximum weight of 75 lb..Must be free of slag or dross materials and prepared in a uniform material handleable form.Similar to ISRI code THROB.