Jig separation of plastics from scrapped copy machines

Tsunekawa, Masami; Naoi, Banryu; Ogawa, Shingo; Hori, Kunihiro; Hiroyoshi, Naoki; Ito, Masazumi; Hirajima, Tsuyoshi

doi:10.1016/j.minpro.2004.12.001

Cited by 40 publications

(31 citation statements)

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“…Dasar jig yaitu pemulsaan air melalui bidang material kasar yang menyebabkan material kasar mengendap sedangkan material ringan dapat melewati bidang, sehingga kedua material dapat dikumpulkan secara terpisah (Rahardyan, 2002:1). Jig Separation adalah salah satu metode tertua dalam konsentrasi gravitasi, hingga kini teknologi penyiapan batu bara telah menyebar luas karena Jig Separation memiliki presisi pemisahan yang tinggi, hemat biaya, dan laju umpan yang tinggi (Tsunekawa, 2004:68 dari Kelly dan Spottiswood, 1982Wills, 1992;Buntenbach, 1997). Takakuwa dan Matsumura (1954) telah mengembangkan TACUB Jig untuk pemisahan mekanis yang dapat digunakan untuk pemisahan plastik (Tsunekawa, 2004: 68).…”

Section: Pendahuluanunclassified

Jurnal Teknik Lingkungan

2010

j.tl

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Section: Pendahuluanunclassified

Jurnal Teknik Lingkungan

2010

j.tl

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“…Where, R c is the recovery of PP in the product fraction; R t is the recovery of ABS in reject fraction; n is the Newton's efficiency (Tsunekawa, 2005), and f : the content of target material in the feed; c: the content of target material in the product fraction; t: the content of target material in the reject fraction; F: mass of the feed; C: mass of the product fraction; T: mass of the reject fraction.…”

Section: Estimation Of Degree Of the Separationmentioning

confidence: 99%

“…15,18) This separation method can improve the separation efficiency by establishing a triboelectric series and developing a charger material and charger type [19][20][21][22][23] such as cyclone, vibrating feeder, fluidized bed, inclined rotating drum, honeycomb and spiral tube charger, and appropriate handling technique for the various charging factors. [24][25][26] This work aims at developing a reliable and relatively inexpensive technology for the effective triboelectrostatic separation of PP and ABS, based on the control of the charge polarity and charge-to-mass ratio of those particles. Particularly, our study is focused on estimating process variables such as charger material, air velocity, electrode potential, splitter position and relative humidity that affect the separation efficiency of plastics.…”

Section: Introductionmentioning

confidence: 99%

Triboelectrostatic Separation for Recycling of Seaweed-Drying Net Frame Plastic Wastes

Park

Jeon

2009

Mater. Trans.

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In this research, on the basis of the control of electrostatic charge, a laboratory-scale triboelectrostatic separation for separating polypropylene (PP) and acrylonitrile-butadiene-styrene (ABS) in seaweed-drying net frame plastic wastes has been carried out. High density polyethylene (HDPE) in a charger material selection tests using a vertical-reciprocation system was found to be the most effective materials for a tribo-charger in the separation of PP, and ABS. In lab-scale triboelectrostatic separation tests using the HDPE pipeline charger, the charge-tomass ratio (nC/g) of the mixed PP and ABS increased when the air velocity was adjusted to over 10 m/s. The optimum splitter position estimated by Newton's separation efficiency ( n ) was a position +4 cm from the central. Furthermore, under the conditions of over 385 kV/m electric field and less than 30% relative humidity, a PP grade of 99.70% and a recovery of 92.30% could be obtained.

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“…A jig is a gravity separator that uses pulsation (repeated expansion and contraction of a vertical bed of particles) of water. The result of this movement is the bed stratification, where the materials density splits in ascending order from the top to the bottom [4], [5]. Jigs uses has been documented since De Re Metallica [6] and there are several works describing the use of jigs in fields such as mineral processing and even recycling.…”

Section: Introductionmentioning

confidence: 99%

“…A TACUB jig was applied to separate waste plastics used in copy machine. Grades of 99.8% PS, 99.3% ABS, and 98.6% PET were recovered as the products in the top, middle and bottom layers, respectively [5]. In another study with the same jig [8] the separation for crushed plastic particles was tested.…”

Section: Introductionmentioning

confidence: 99%

Influence of Jig Pulsation Frequency in Magnetite Concentration

Silva¹,

Tomaz²,

Sousa³

et al. 2016

IPCBEE

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Abstract. The importance of pigments for the civilization is obvious and well documented. Although these materials have been discovered many years ago, research continues nowadays. Industries often require new shades, colors and more homogeneous and stable pigments. The selection of mineral pigments is of major importance to acquire high quality, color, purity and mostly free of chemical contaminants, such as chemicals from froth flotation process. The region of Catalã o, Brazil, has several mineralizations, including apatite, barite, magnetite, monazite, niobium, titanite and vermiculite. Nowadays phosphate, niobium and barite are economically exploited. For the production of these minerals, the magnetite is removed through magnetic separation and sent to a tailings dam. The aim of this study is to evaluate the possibility of producing iron oxide to be used as pigments as well as to evaluate the pulsation frequency influence in the jigging process. A Denver jig, in lab scale was used. Test were carried out using six different particle sizes and four pulsation frequencies, keeping the water flow rate fixed at 20 liters per minute. The results indicate that iron oxide production for pigments is viable from phosphate rock tailings, since it was possible to produce magnetite concentrated with grades over 90% and magnetite recovery around 40%.

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Jig separation of plastics from scrapped copy machines

Cited by 40 publications

References 1 publication

Jurnal Teknik Lingkungan

Jurnal Teknik Lingkungan

Triboelectrostatic Separation for Recycling of Seaweed-Drying Net Frame Plastic Wastes

Influence of Jig Pulsation Frequency in Magnetite Concentration

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