Size reduction by means of low-speed rotary shears

Woldt, Dirk; Schubert, Gert; Jäckel, H.‐G.

doi:10.1016/j.minpro.2004.07.008

Cited by 30 publications

(19 citation statements)

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“…A variety of machines and equipment are available on the market, specifically rotary shears [29], rotary cutters [30], translator shears (guillotine, alligator), and rotary shredders [31] (Figure 6). All of these differ by the technology and by the type of load applied to the scrap.…”

Section: Comminutionmentioning

confidence: 99%

Preparation and Melting of Scrap in Aluminum Recycling: A Review

Capuzzi

Timelli

2018

Metals

185

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Abstract:This work provides an overview of the aluminum (Al) recycling process, from the scrap upgrading to the melting process. Innovations and new trends regarding the Al recycling technologies are highlighted. Aluminum recycling offers advantages in terms of environmental and economic benefits. The presence of deleterious impurities in recycled Al alloys is increasing and this is the main drawback if compared to primary alloys. The continuous growth of undesired elements can be mitigated by different technologies, preliminary operations and treatments, and by the optimization of the melting process. Downgrading and dilution are possible solutions to reduce the rate of impurities, but they are not sustainable if the final use of Al alloy continuously increases. The main objectives in the development of the Al recycling are shown and discussed. In particular, the evolution of preliminary treatments of the scrap, as sorting, comminution and de-coating, is reported and a review of the melting technologies is also presented. However, the choice of performing preliminary operations to the melting stage, thus improving the operating conditions during the furnace running, is a trade-off between costs and process efficiency.

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Section: Comminutionmentioning

confidence: 99%

Preparation and Melting of Scrap in Aluminum Recycling: A Review

Capuzzi

Timelli

2018

Metals

185

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“…Cutting mills with cutters spaced over the drum circumference are widely used for rough and medium grinding of, among others, non-ferromagnetic light metals, polymer material waste, tyres and papers waste [46].…”

Section: The State Of the Art: New And Previous Design Solutions Of Cmentioning

confidence: 99%

Size Reduction by Grinding as an Important Stage in Recycling

Macko¹

2012

Post-Consumer Waste Recycling and Optimal Production

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“…Sharp knives are used for cutting while working tools with a wedge angle of 75° to 90° do the shearing. During cutting process the fracture of material is the result of splitting effect of the knife, while the shearing is the result of shear and tensile stress (Schubert and Bernotat, 2004;Woldt et al, 2004).…”

Section: Figure 2 Types Of Actions and Corresponding Particle Shapesmentioning

confidence: 99%

“…The combination of tensile stress with bending and torsion of the material is called tearing. (Woldt et al, 2004;Schubert and Bernotat, 2004).…”

Section: Figure 2 Types Of Actions and Corresponding Particle Shapesmentioning

confidence: 99%

“…Different equipment design involves applying different combinations of stress loadings. Scubert and Bernotat, (2004) and Woldt et al (2004) have done a systematic classification of such machines. In the following, the Table 3 and Figure 4 present an extended layout of this classification to better illustrate global experience in material comminution and to suggest further different pathways of biomass processing equipment design and research.…”

Section: Comminution Equipment Classification Design and Selectionmentioning

confidence: 99%

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Analysis of Biomass Comminution and Separation Processes in Rotary Equipment - A Review

Miu¹,

Woma²,

Igathinathane³

et al. 2006

2006 Portland, Oregon, July 9-12, 2006

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Abstract. Biomass utilization for bio-energy, bio-fuels or bio-based products requires reductionof the material size within specific ranges depending on feedstock specie, handling and further processing / conversion processes. Biomass size reduction is a mechanical treatment process that refers to either cutting or comminuting processes that significantly change the particles size, shape and bulk density of organic material.The authors are solely responsible for the content of this technical presentation. The technical presentation does not necessarily reflect the official position of the American Society of Agricultural and Biological Engineers (ASABE), and its printing and distribution does not constitute an endorsement of views which may be expressed. Technical presentations are not subject to the formal peer review process by ASABE editorial committees; therefore, they are not to be presented as refereed publications. Citation of this work should state that it is from an ASABE meeting paper. EXAMPLE: Author's Last Name, Initials.

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Size reduction by means of low-speed rotary shears

Cited by 30 publications

References 1 publication

Preparation and Melting of Scrap in Aluminum Recycling: A Review

Preparation and Melting of Scrap in Aluminum Recycling: A Review

Size Reduction by Grinding as an Important Stage in Recycling

Analysis of Biomass Comminution and Separation Processes in Rotary Equipment - A Review

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