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Particle shape of copper milled by swing-hammer-type impact mill

Koyanaka, S. et al.

Powder technology. VOL 90; NUMBER 2, ; 1997, 135-140 -- ELSEVIER SEQUOIA SA Part: Part 2; (pages 135-140) -- 1997

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  • Title:
    Particle shape of copper milled by swing-hammer-type impact mill
  • Author: Koyanaka, S.;
    Endoh, S.;
    Ohya, H.;
    Iwata, H.
  • Found In: Powder technology. VOL 90; NUMBER 2, ; 1997, 135-140
  • Journal Title: Powder technology.
  • Subjects: Chemical Engineering and Technology; Materials; LCC: TP156.P3; Dewey: 671.37
  • Publication Details: ELSEVIER SEQUOIA SA
  • Language: English
  • Abstract: In order to apply a shape sorting technique to recover the copper component from printed wiring board (PWB) scrap, the particle shape of copper milled by a swing-hammer-type impact mill was experimentally investigated. Copper plate and PWB scraps were used as samples. The effects of mill operating conditions, i.e., hammer circumferential speed (v~c) and screen aperture size (diam~sd~s), on shape and size distribution of milled products were examined. Sphericity and homogeneity in the shape of milled copper particles largely depended on mill operating conditions. In the cases of both copper plate and PWB scrap milling, the most effective operating conditions to obtain spherical copper particles were v~c congruent to 50 m s^-^1 and d~s = 1 mm, and to obtain homogeneous shaped copper particles v~c congruent to 70 m s^-^1 and d~s = 1 mm. The most effective operating conditions of the mill to recover the copper component from PWB scrap using an inclined vibrating plate (IVP) were v~c congruent to 70 m s^-^1 and d~s = 1 mm.
  • Identifier: Journal ISSN: 0032-5910
  • Publication Date: 1997
  • Physical Description: Physical
  • Accrual Information: Monthly
  • Shelfmark(s): 6572.500000
  • UIN: ETOCRN021709414

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