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scrap charging

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Published: 01 December 2008
Fig. 7 Cokeless cupola showing scrap charging, water-cooled grates, burner location, and so on More
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Published: 31 August 2017
Fig. 8 Cokeless cupola showing scrap charging, water-cooled grates, burner location, and so on More
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Published: 01 December 1998
Fig. 8 Swirl scrap charge melter, which uses a continuous melting process for UBC scrap More
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Published: 01 January 1990
Fig. 10 Melting processes for UBC scrap. (a) Early can scrap melter. (b) More-advanced swirl scrap charge melter, which uses a continuous melting process More
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Published: 01 December 2008
Fig. 6 Charge yard arrangement showing scrap delivery, storage bins, weigh hoppers, and charging bucket More
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Published: 31 August 2017
Fig. 4 Charge yard arrangement showing scrap delivery, storage bins, weigh hoppers, and charging bucket. Coke and limestone are usually stored in covered overhead storage bins and are discharged into a weigh hopper and then into the charge buckets. More
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Published: 01 January 1990
Fig. 1 Electric arc furnace being charged with baled scrap. Courtesy of the American Iron and Steel Institute More
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003173
EISBN: 978-1-62708-199-3
.... In foundry melting, the charge usually consists primarily of scrap and foundry returns (gates, risers, and scrapped castings). Chemistry is adjusted by adding the elements needed to reach the proper composition. Scrap must be preheated before charging to burn off machining oil, which can contaminate...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005195
EISBN: 978-1-62708-187-0
.... All major additions are made to the furnace through the roof by swinging the roof out of the way and charging scrap, fluxes, and carbon from loaded buckets. The furnace has two or three electrodes mounted vertically through the roof of the furnace that float just above the surface of the cold...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005197
EISBN: 978-1-62708-187-0
... bed of coke. Alternate layers of scrap metal and coke are charged into the top of the cupola. In its slow descent, the scrap metal is heated to the melting temperature by direct contact with the upward flow of the hot gases from the coke combustion. The molten-metal droplets collect in the inner...
Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.a0001053
EISBN: 978-1-62708-161-0
... are used today, each utilizing scrap. Most steel, about 60%, is currently produced in a basic oxygen furnace (BOF), which requires about 25 to 30% scrap. In the steelmaking process, scrap acts as a coolant in addition to providing part of the required iron. The metallic charge to a BOF is comprised of hot...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006484
EISBN: 978-1-62708-207-5
... upgrading and before charging to a furnace for remelting. Eddy-Current Separation (ECS) When a conductive particle (such as a piece of scrap) enters the magnetic field generated by a permanent magnet, the field causes an eddy current to flow in the particle. When this particle passes...
Book Chapter

By John C. Bittence
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003222
EISBN: 978-1-62708-199-3
... and Procedures for Small Operations A major step in scrap processing is size reduction. Large items must be cut to simplify handling, increase density, and to enable them to be charged into a furnace. For small-scale scrap processing, gas-cutting, plasma-arc, or carbon-arc torches are the tools...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001118
EISBN: 978-1-62708-162-7
... 9th Edition Metals Handbook. The following discussion will concentrate on issues involving scrap preparation and melting. In the early days of the aluminum industry, recycling consisted entirely of hand charging unused parts of castings (for example, risers or cut-to-fit scrap pieces...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006337
EISBN: 978-1-62708-179-5
... requirements generally charge, melt down, refine, and superheat the iron in batches. This practice is commonly referred to as cold melting. Such installations use electric induction, electric arc, or air (reverberatory) furnaces for melting a properly proportioned charge of white iron returns, scrap iron...
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Published: 01 December 2008
Fig. 10 The major components of a dryer used to preheat induction furnace charge material. Integrated scrap preheat process combines (1) weigh hoppers, (2) preheat hood, (3) material transfer mechanism, and (4 and 5) furnace-charging apparatus into a single automated process. More
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006329
EISBN: 978-1-62708-179-5
... to change over the lifetime of the facility, so it is necessary to build in some flexibility in design to accommodate for an unknown future need. Fig. 4 Charge yard arrangement showing scrap delivery, storage bins, weigh hoppers, and charging bucket. Coke and limestone are usually stored in covered...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005905
EISBN: 978-1-62708-167-2
... furnace: melting selected scrap and casting A second application case of the use of an induction furnace in steel works to produce structural steel is shown in Fig. 5 in diagram form. The crucible furnace works as a melting unit in addition to an electric arc furnace. Melt charges of 100 tons...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006318
EISBN: 978-1-62708-179-5
... and limiting their concentration, often at very low levels, can significantly degrade casting performance. The primary source of these tramp elements is from the steel scrap, pig iron, and cast iron returns used as major charge materials for cast iron melting. Other trace elements are intentionally added...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005904
EISBN: 978-1-62708-167-2
... when charging the increasingly common microalloyed steels, because their trace elements can lead to carbide inclusions and to disruptions in the graphite formation ( Ref 7 ). The quality of baling scrap really does need to be assured by contract with the scrap merchant, because its inner state...