Institute of Scrap Recycling Industries

Technical data. Institute of Scrap Recycling Industries, Inc. (ISRI), Washington, D.C., 1996. 

Institute of Nuclear Power Operations (INPO), 17 532-533, 539, 597 Institute of Scrap Recycling Industries (ISRI), ferrous scrap grades,... 

The Institute for Environmental Research and Education, Vashon, WA, USA, on behalf of Institute of Scrap Recycling Industries Inc., Washington, DC, USA, November 2009. 

Scrap from municipal refuse may be in the form of source-separated steel cans, a mixed ferrous fraction, metal magnetically separated from mixed waste or incinerator ash, and C D debris. An ASTM specification (E1134-86) was developed in 1991 for source-separated steel cans. The Steel Recycling Institute has a descriptive steel can specification entitled "Steel Can Scrap Specifications". PubHshed standards for municipal ferrous scrap also include ASTM E701-80, which defines chemical and physical test methods, and ASTM E702-85 which covers the chemical and physical requirements of ferrous scrap for several scrap-consurning industries. 

Since 1951, silver consumption has exceeded its extraction from ore. Secondary silver production involves the recovery of silver from new and old scrap, resulting from silver-containing wastes generated by industry and the consumer. Recycled silver accounted for 40% of U.S. refinery production in 1971 and had increased to 67% by 1974 (Smith and Carson 1977). It was estimated to be 61% and 56% in 1988 and 1989, respectively (The Silver Institute 1990). The estimated world-wide recovery of silver from the photographic industry is about 67% of the total used (The Silver Institute 1988). It has been estimated that 80%, 68%, and 75% of today s annual consumption by the electrical, industrial-alloy, and art industries, respectively, is recycled silver, but these estimates may be high. 

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