Recovering copper from electric cable wastes using a particle shape separation technique

Koyanaka, Shigeki; Ohya, Hiroaki; Endoh, Shigehisa; Iwata, Hiroyuki; Ditl, Pavel

doi:10.1016/s0921-8831(08)60469-0

Cited by 31 publications

(10 citation statements)

References 5 publications

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“…The best separation efficiency (near 95%) was obtained for intermediate levels of table inclination of 5.5 • and wash water flow rate of 4.5 L/min, with a copper grade of 97% in the sink and a copper recovery of 96.6% (Table 4). These results were better than the ones obtained by Koyanaka et al [9] in the separation of copper/plastic mixture using an inclined vibrating plate, getting a separation efficiency of 73%, a copper grade of 97% and a copper recovery of about 80%.…”

Section: Shaking Tablecontrasting

confidence: 65%

“…Several studies have reviewed the progress and the potential of the available techniques, for the recovery of metals and non-metals from electric and electronic waste [2][3][4][5][6][7][8]. These technologies include the application of physical separation, such as gravity methods [9][10][11][12]; magnetic separation [13][14][15]; electrostatic separation by the corona method [13,16,17]; electrical conductivity (Eddy currents) methods [18][19][20] and froth flotation [11,[21][22][23].…”

Section: Introductionmentioning

confidence: 99%

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Separation of Copper from Electric Cable Waste Based on Mineral Processing Methods: A Case Study

Pita

Castilho

2018

Minerals

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Recycling of electrical cable waste requires a separation between the metal and the insulating material. The objective of this work was to separate the copper from the plastic in electrical cable waste previously ground below 2 mm, using jigging, shaking table and froth flotation techniques. The effect of particle size was also analysed. Jigging and shaking table proved to be effective in the separation of copper from plastics. The result was a copper concentrate with a copper grade of about 97% by both methods and a copper recovery of about 97%. Jigging separation had similar separation efficiencies in the seven-sized fractions, but in shaking table, the separation efficiency improved with an increase in particles size. The separation achieved by froth flotation had lower efficiencies (85%), because plastics are naturally hydrophobic and copper presents some hydrophobic behaviour. In this technique, the addition of depressant agents was mandatory for the depression of copper, even at low concentrations. The best results were obtained with concentrations of 10 −1 mg/L of sodium sulfide (407410 Sigma-Aldrich, Sigma-Aldrich Corporation, St. Louis, MO, USA) and meso-2,3-Dimercaptosuccinic acid (D7881 Sigma-Aldrich).

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Section: Shaking Tablecontrasting

confidence: 65%

Section: Introductionmentioning

confidence: 99%

Separation of Copper from Electric Cable Waste Based on Mineral Processing Methods: A Case Study

Pita

Castilho

2018

Minerals

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“…An inclined conveyor and inclined vibrating plate were investigated as a particle shape separator to recover copper from electric cable waste (Koyanaka et al, 1997). The research showed that approximately 90% of copper can be recovered from shredded electric cable waste by using an inclined vibrating plate.…”

Section: Particle Shapes Of Materials In Tv Scrapmentioning

confidence: 99%

Characterization of shredded television scrap and implications for materials recovery

Cui

Forssberg

2007

Waste Management

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“…This will help in reducing the cost of waste disposal and protect the environment from pollution. Koyanaka et al (1997) studied recovering copper from electric cable wastes using a particle shape separation technique. The electric cable was cut into small pieces with the help of a cutter mill.…”

Section: Introductionmentioning

confidence: 99%

Model for treatment of copper slag produced during copper alloying

El-Rahman¹

2006

Mineral Processing and Extractive Metallurgy

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The purpose of this research is to develop a model for treatment of copper slag produced during copper alloying. Two copper slags were used, one from melting very pure metal to produce silicon brass (slag 1) and the other from remelting scrap to produce brass (slag 2). The model involves crushing, sizing and grinding followed by sieving and leaching. The leaching process was carried out on the size fraction ,0 . 074 mm produced by crushing and grinding using sulphuric acid. Leaching parameters such as acid concentration and time of leaching were investigated. Results obtained for both slags 1 and 2 showed that the coarse fraction from 24 to 0 . 075 mm was enriched with copper and the size fraction ,0 . 075 mm was enriched with silica. The coarse fraction is 68 wt-% slag 1 containing a copper content of 82 wt-% and a SiO 2 content of 13 wt-% and a copper recovery of 93 wt-%. In the case of slag 2 the coarse fraction was 40% by weight containing at 80 wt-%Cu and 4 . 7 wt-%SiO 2 with a copper recovery of 80%. Both the coarse fractions from slags 1 and 2 could be recycled either in an alloying process or used for production of copper. The results from leaching size fraction ,0 . 075 mm which represented 32 wt-% of slag 1 and 60 wt-% of slag 2 showed extraction rates of copper of 95 and 97% respectively.

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Recovering copper from electric cable wastes using a particle shape separation technique

Cited by 31 publications

References 5 publications

Separation of Copper from Electric Cable Waste Based on Mineral Processing Methods: A Case Study

Separation of Copper from Electric Cable Waste Based on Mineral Processing Methods: A Case Study

Characterization of shredded television scrap and implications for materials recovery

Model for treatment of copper slag produced during copper alloying

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