Scrap automobile

Hammer Crusher (Fig. 20-27) Pivoted hammers are mounted on a horizontal shaft, and crushing takes place by impact between the hammers and breaker plates. Heavy-duty hammer crushers are frequently used in the quarrying industiy, for processing municipal solid waste, and scrap automobiles. 

Besides scrap and worn tires, other main sources of waste mbber are discarded mbber products, such as mbber pipes, mbber belts, mbber shoes, edge scraps, automobile hoses, and various fabric-reinforced components. Scraps produced during the production of mbber goods also contribute to recycle stream [6]. Reutilization of waste mbber demanded effective techniques for its recycling. 

Scrap metal comprises worn or extra bits and pieces of metal parts, such as scrap piping and wire, or worn metal items, such as scrap automobile parts and radiators. If scrap metal is reclaimed, it is a solid waste and is subject to hazardous waste regulation. Scrap metal is also regulated as a solid waste when used in a manner constituting disposal burned for energy recovery, used to produce a fuel, or contained in fuels or accumulated speculatively. This does not apply to processed scrap metal, which is excluded from hazardous waste generation entirely. 

Chamberlain, W.P. and Prasantu K. Gupta. Use of Scrap Automobile Tire Rubber in Highway Construction. New York State Department of Transportation. May 1986. 

In the United States, about 40% of the lead used is recovered from scrap. There are two types of scrap lead. The term old scrap applies to metal that has already been used in some manufactured object and the used article has been recycled for resmelting. Lead in the form of pieces cut off, filings, turnings, and so forth discarded during manufacturing processes is called new scrap. Automobile batteries constitute the largest source of old scrap lead. 

Hammer mills are the principal equipment in cryogenic processing when products of 50-100 mesh are adequate. Scrap automobiles and rubber tires are chilled with liquid nitrogen to be made brittle to facilitate grinding (Walas, 1988). 

The scrap automobile is a typical example of the treatment, recycling, and recovery of so-called secondary mixed scrap (Sattler... 

Kellough RM (1991) Effects of scrap automobile tires in water. Ontario Ministry of the Environment, Toronto, Waste Management Branch... 

Abernethy SG, Montemayor BP, Penders JW (1998) The aquatic toxicity of scrap automobile tires. Project report of Waste Reduction Branch, Ontario Ministry of Environmental and Energy... 

The parts obtained from scrap automobiles are sorted through for plastic parts. The appearance and weight of the parts are measured and then subjected to crushing and pelletising. Test specimens are prepared by moulding or cutting the parts and the test pieces are evaluated. 

M J Wutz, Solutions for recycling plastic from scrap automobiles (1990, p293). 

Graham, J., Hendra, P.J., Mucci, P. (1995) Rapid identification of plastics components recovered from scrap automobiles. Plastics, Rubber and Composites Processing and Applications, 24, p.55-67. 

Aluminum alloys are very corrosion resistant and, therefore, nonbiodegradable. Fortunately, however, they may be recycled in fact, aluminum is the most important recyclable nonferrous metal. Because aluminum is not easily corroded, it may be totally reclaimed. A low ratio of energy is required to refine recycled aluminum relative to its primary production. In addition, a large number of commercially available alloys have been designed to accommodate impurity contamination. The primary sources of recycled aluminum are used beverage cans and scrapped automobiles. 

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