WO1996006972A1 - An apparatus for slushing and sorting fibrous material - Google Patents

An apparatus for slushing and sorting fibrous material Download PDF

Info

Publication number
WO1996006972A1
WO1996006972A1 PCT/FI1995/000455 FI9500455W WO9606972A1 WO 1996006972 A1 WO1996006972 A1 WO 1996006972A1 FI 9500455 W FI9500455 W FI 9500455W WO 9606972 A1 WO9606972 A1 WO 9606972A1
Authority
WO
WIPO (PCT)
Prior art keywords
drum
defibration
towards
wetted
basin
Prior art date
Application number
PCT/FI1995/000455
Other languages
English (en)
French (fr)
Inventor
Jari Leino
Original Assignee
Jari Leino
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jari Leino filed Critical Jari Leino
Priority to AU32594/95A priority Critical patent/AU3259495A/en
Publication of WO1996006972A1 publication Critical patent/WO1996006972A1/en

Links

Classifications

    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21BFIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00Fibrous raw materials or their mechanical treatment
    • D21B1/02Pretreatment of the raw materials by chemical or physical means
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21BFIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00Fibrous raw materials or their mechanical treatment
    • D21B1/04Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D21B1/30Defibrating by other means
    • D21B1/32Defibrating by other means of waste paper
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/64Paper recycling

Definitions

  • the invention relates to an apparatus for slushing and sorting fibrous material, in which apparatus the actual slushing is conducted in a rotat ⁇ ing defibration drum or in another defibration apparatus using defibra ⁇ tion and disintegration fluids.
  • the apparatus is intended particularly for treatment of unsorted fibre material containing foreign components, such as waste paper containing packing material coated with plastic.
  • a rotating drum is used, as mentioned above, which is usually pro ⁇ vided with elongated lifting blades fixed inside the housing of the drum, intended for lifting the material to be treated from the lowermost part of the drum housing towards the uppermost part of the housing when the drum rotates around its longitudinal axis. From the uppermost part of the housing, the material is thrown against the lower part of the hous ⁇ ing, wherein the material is worked and disintegrated.
  • the material to be treated is wetted with a defibration and dis- integration fluid containing the required chemicals and being supplied to the drum.
  • the housing of said drum is divided in two parts by a partition wall.
  • the part of the housing on the side of the inlet end of the drum, where the material to be treated is supplied, is non-perforated and used for wetting of the material, treatment with chemicals and slushing.
  • the partition wall is provided with an opening, through which the slushed material flows to the housing part on the side of the dis- charge end of the drum, which is perforated and used for sorting of the material.
  • the material to be treated is dry when supplied to the inlet end of the drum and wetted there with the defibration and disintegration fluid which is supplied to the drum e.g.
  • the sorting takes place at the perforated discharge end of the drum by flushing the slushed material with a fluid which is passed through the housing and the material.
  • the purpose of the sorting is to separate the usable part of the mass completely from the unusable part. After this, the usable material is transported for further processing, for example for refining into recycled paper.
  • corresponding ap ⁇ paratuses are also known from European Application Publications No. 164 428 and No. 194 332. In these publications, water and the waste paper to be defibred are supplied via a feeder trough to a de- fibration drum for softening and defibration.
  • a pre-treatment device placed upstream of the defibration drum makes it possible to wet the material to have a required moisture content before the actual defibration.
  • the purpose of the pre-treatment device is not to be in ⁇ volved with defibration but to bring the material to be treated in a suffi ⁇ cient contact with water, and it is a controllable process separate from the defibration process.
  • An important advantage of the apparatus according to the invention is the fact that the retention time of the material to be treated in the de ⁇ fibration drum can be substantially reduced, thus making defibration more effective and raising the degree of utilisation of the apparatus used for it.
  • Figure 1 shows an embodiment of the invention in a longitudinal sec ⁇ tion
  • Figure 2 shows a section along the line A — A of Fig. 1 ,
  • Figure 3 shows a second embodiment of the invention in a longitudi ⁇ nal section
  • Figure 4 shows a third embodiment of the invention in a longitudinal section.
  • the defibration drum used may be one of different solutions, known as such, where the ma ⁇ terial to be treated is slushed by impregnating it with defibration and disintegration fluids and by working the material in a rotating defibration drum and further by sorting the actual waste apart from the usable ma ⁇ terial for further refining.
  • a defibration drum will be indicated in this description and in the drawings with the reference numeral 1. Fur ⁇ ther, it is possible to use also other types of defibration devices, where the material to be treated can be defibred in a sufficient water content by mechanical working.
  • the apparatus shown in Figs. 1 and 2 comprises a defibration drum 1 and a pre-treatment device 2, which includes a wetting drum 3 and a connecting trough 4.
  • the material to be pre-treated is supplied to the inlet end 6 of the wetting drum 3 together with a fluid, such as water.
  • the wetting drum 3 is provided with elongated interior lifting blades 5 for lifting the material to be treated and the said fluid from the lower ⁇ most part of the drum upwards when the drum rotates around its longi- tudinal axis. From the upper parts of the drum, the material and the fluid are dropped to the lower part of the drum, and this continuous move ⁇ ment brings about their mixing and the wetting of the material to be treated simultaneously when the material is moved towards the de- fibration drum 1.
  • the wetting drum is not an ordinary defibration drum, but the purpose of the movement is to mix the material with water in a way that water is absorbed into the material consisting of fibres adher ⁇ ing to each other, the material swells and the bonds between the fibres get weaker.
  • said wetting drum 3 is placed in an inclined posi ⁇ tion so that the wetted, treated material flows from the inlet end 6 to the discharge end 7, from which it flows further via the connecting trough 4 to the actual defibration drum 1.
  • the material has typically absorbed about twice its weight water. The material is not yet defibred, but its dry matter content is still at least 30 %, the rest being absorbed fluid.
  • the apparatus shown in Fig. 3 comprises a defibration drum 1 and a pre-treatment device 2 directly connected to it, including a wetting drum 3 where the material and the fluid are treated in the same way as in the apparatus shown in Figs. 1 and 2.
  • the wetting drum 3 rotates together with the actual defibration drum 1 , because it is rigidly attached to it, and its lifting blades 5 are placed in an inclined position so that during rotation of the drum they move the wetted mate ⁇ rial towards the actual defibration drum 1. Mixing of the material to be treated and the fluid, and in addition, wetting of the material is achieved on the same principle as in the embodiment shown in Figs. 1 and 2.
  • wetting drum 3 of the apparatus shown in Fig. 3 can be arranged to operate also separately from the actual defibration drum 1 , whereby a connection trough 4 according to Fig. 1 can be ar ⁇ ranged between the wetting drum 3 and the defibration drum 1. Further, the wetting drum 3 and the defibration drum 1 can be connected to ⁇ gether by mechanical power transmission.
  • the apparatus shown in Fig. 4 comprises an actual defibration drum 1 and a pre-treatment device 2 which comprises: - a wetting basin 8, a conveyor 9 running substantially parallel to the bottom of the wetting basin 8, at least four guide rolls 10 guiding the conveyor 9, at least one shield plate 11 to prevent the material to be treated from getting into contact with the guide rolls 10, and a connection trough 4 at the end of the conveyor 9 to move the material wetted in the basin into the defibration drum 1.
  • the material to be wetted is moved into the wetting basin 8 by a known conveyor, such as a chute, belt, bucket, crane, or the like. Fluid is supplied to the basin preferably by means of a pipe or a pipe system 12. The material is supplied to the inlet end of the con- veyor 9, it is wetted in the wetting basin 8, and it is moved by the con ⁇ veyor 9 towards the supply trough 4, on which it flows further to the ac ⁇ tual defibration drum 1.
  • the conveyor 9 can be of any conveyor type suitable for conveying material in water, such as a belt conveyor.
  • the conveyor forms e.g. an endless loop which is led by guide rolls 10 over the rims of the basin 8, thus avoiding problems of sealing the bottom.
  • the phenomena taking place during wetting are the same as those pre ⁇ sented above in connection with the drum alternatives.
  • the material reaches by pre-wetting a water content which will still require a water addition for the actual defibration.
  • This additional water can be supplied already to the pre-treatment device, whereby primarily the retention time and/or the way of treatment in the pre-treatment device causes that at the discharge end the mass moving towards the actual defibration still contains separately the substantially non-defibred, swollen fibre material impregnated with water, and the water which is required for achieving the final defibration consistency of typically 10—20 %.
  • the energy to be supplied to the material is higher than in pre-treatment, and defibration will take place quickly by the action of this additional water and the kinetic en- ergy of the defibration device.
  • Water is moved together with the wetted material to the actual defibra ⁇ tion device, and for maintaining a sufficient quantity of water in the pre- treatment device 2, at the end of its transfer path (the inner part of the drum 3 or the conveyor 9) there can be an overflow threshold 13, as a raised rear wall of the drum 3 indicated by broken lines in Figs. 1 — 3 or a higher rear edge of the basin 8 in the alternative of Fig. 4.
  • the drum 3 can be provided with guides rotatable together with the inner part (not shown), for lifting the wetted material at the rear end over the threshold to the trough 4.
  • the invention is suitable for treatment of all kinds of fibrous material where cellulose fibres adhering to each other can be separated by the combined action of the water and mechanical working, such as in the case of waste paper. Further, the pre-treatment device 2 can also in ⁇ volve other operations, such as mechanical tearing or cutting of the material to be impregnated into smaller pieces.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
PCT/FI1995/000455 1994-08-26 1995-08-28 An apparatus for slushing and sorting fibrous material WO1996006972A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU32594/95A AU3259495A (en) 1994-08-26 1995-08-28 An apparatus for slushing and sorting fibrous material

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI943917 1994-08-26
FI943917A FI99245B (fi) 1994-08-26 1994-08-26 Laitteisto kuitupitoisen aineen sulputtamiseksi ja lajittelemiseksi

Publications (1)

Publication Number Publication Date
WO1996006972A1 true WO1996006972A1 (en) 1996-03-07

Family

ID=8541248

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1995/000455 WO1996006972A1 (en) 1994-08-26 1995-08-28 An apparatus for slushing and sorting fibrous material

Country Status (3)

Country Link
AU (1) AU3259495A (fi)
FI (1) FI99245B (fi)
WO (1) WO1996006972A1 (fi)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001034901A1 (fr) * 1999-11-12 2001-05-17 Exportation De Materiel Industriel Procede et dispositif pour la remise en pate de balles de matieres fibreuses

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3425270A1 (de) * 1983-07-12 1985-01-24 A. Ahlström Oy, Noormarkku Verfahren und vorrichtung fuers aufloesen und pumpen von zellulosemasse oder altpapier
SE462656B (sv) * 1982-09-15 1990-08-06 Dollard Karton Bv Foerfarande och anordning foer upploesning av fibermaterial

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE462656B (sv) * 1982-09-15 1990-08-06 Dollard Karton Bv Foerfarande och anordning foer upploesning av fibermaterial
DE3425270A1 (de) * 1983-07-12 1985-01-24 A. Ahlström Oy, Noormarkku Verfahren und vorrichtung fuers aufloesen und pumpen von zellulosemasse oder altpapier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001034901A1 (fr) * 1999-11-12 2001-05-17 Exportation De Materiel Industriel Procede et dispositif pour la remise en pate de balles de matieres fibreuses

Also Published As

Publication number Publication date
FI99245B (fi) 1997-08-29
FI943917A0 (fi) 1994-08-26
FI943917A (fi) 1996-02-27
AU3259495A (en) 1996-03-22

Similar Documents

Publication Publication Date Title
JP6280262B1 (ja) 使用済み衛生用品の処理装置用分離機
EP1804974B1 (en) Method and apparatus for treating materials or mixtures of material
FI56985B (fi) Raffineringsfoerfarande foer fibrigt raomaterial
CN101230544B (zh) 用于废纸再循环设备的清洁方法和系统
JPS5876588A (ja) 汚染された故紙製品から製紙用繊維を回収する方法及び装置
CA1247909A (en) Apparatus for dissolving and sorting waste paper
CN109138031A (zh) 一种用于沟渠淤泥处理设备
FI67580B (fi) Foerfarande och anordning foer fibrering silning och pumpning av cellulosamassa och returpapper
JP2012106185A (ja) 廃棄物の破砕分別装置
CN109113117A (zh) 一种沟渠淤泥清理与打包一体化设备
FI89520C (fi) Anordning foer behandling av massa
BR8401608A (pt) Dispositivo para a preparacao de materiais fluentes
WO1996006972A1 (en) An apparatus for slushing and sorting fibrous material
TWI618482B (zh) Method for manufacturing animal excrement disposal material and manufacturing device thereof
CN108330721A (zh) 一种便于清洗的造纸用分级碎浆设备
CN210127354U (zh) 一种废纸无损伤碎浆系统
FI87664C (fi) Anordning foer reglering av fuktighet i loesgods
TW201505543A (zh) 動物用排泄物處理材之製造方法及其製造裝置
CN104501554B (zh) 强力挤压搅拌干燥机
IE68512B1 (en) Apparatus for disintegrating flexible packing materials
US3259104A (en) Apparatus for manufacturing a product
CN209158671U (zh) 废弃纸尿裤回收处理系统
TWI607693B (zh) Animal waste processing material manufacturing method and manufacturing apparatus thereof
JP3268511B2 (ja) 廃紙処理装置
JP7089304B1 (ja) 使用済み衛生用品の処理装置用分離機

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AM AT AU BB BG BR BY CA CH CN CZ DE DK EE ES FI GB GE HU IS JP KE KG KP KR KZ LK LR LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK TJ TM TT UA UG US UZ VN

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): KE MW SD SZ UG AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN ML MR NE SN TD TG

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase