CN102166579B - Method for recycling and separating paper, aluminum and plastic packaging boxes - Google Patents
Method for recycling and separating paper, aluminum and plastic packaging boxes Download PDFInfo
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- CN102166579B CN102166579B CN2011100082722A CN201110008272A CN102166579B CN 102166579 B CN102166579 B CN 102166579B CN 2011100082722 A CN2011100082722 A CN 2011100082722A CN 201110008272 A CN201110008272 A CN 201110008272A CN 102166579 B CN102166579 B CN 102166579B
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- aluminum
- release agent
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- aluminium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2009/00—Layered products
- B29L2009/003—Layered products comprising a metal layer
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Abstract
The invention provides a method for recycling and separating paper, aluminum and plastic packaging boxes. The method comprises the steps of: taking the paper, aluminum and plastic packaging boxes; dispersing in a hydraulic dispersion machine; screening and separating out pulp fibers for cellulose high-value use, wherein the rest are the aluminum and plastic composite materials; mixing the obtained aluminum and plastic composite materials with a separating agent, stirring slightly until separating out aluminum and plastic completely; and finally cleaning the separated aluminum and plastic respectively. The separating method of the invention is low in cost, high in recycling efficiency, and does not cause environmental pollution.
Description
Technical field
The invention belongs to the compound package material separation technology field, relate to the aluminum-plastic packaged box of a kind of paper and reclaim separation method.
Background technology
The aluminum-plastic packaged box of paper take Tetra Pak as representative is a kind of strong packing carton of high humidity that is composited by paper, aluminium foil and vinyon, can be used for the packing of the liquid foods such as milk, fruit juice, soymilk, coffee, grape wine.This packing generally has 6 layers, can effectively stop the rotten factor of influential milk and beverage.Wherein the content of cardboard, vinyon and aluminium foil is respectively 73%, 20% and 5%.
The recycling technical scheme of traditional aluminum-plastic packaged box of paper mainly contains three kinds: (1) waterpower recycled pulp technology: the paper pulp in the aluminum-plastic packaged box of paper is separated, again papermaking, and with remaining aluminum composite extruding granulating, for the manufacture of moulding the aluminium product; (2) mould wood technology: the paper pulp and the plastics that contain in the aluminum-plastic packaged box of paper are pulverized extruding, make and mould wood products; (3) color happy plate technique: with the aluminum-plastic packaged box of paper directly pulverize, hot-pressing processing, make color happy plate.Although the product purpose of being produced by these technology is extensive, the market response and profit margin still can't compare favourably with the aluminium of thoroughly separating, plastic product.Only have paper, mould, the thorough separation of aluminium can realize making the best use of everything and resource-effective maximization, realizes that higher recycling is worth.
The recovery method of paper pulp is to adopt hydrabrusher in the aluminum-plastic packaged box of paper at present, and the shearing force of process water and the frictional force between the fiber are with fiber separation, and the separation method of residue plastic-aluminum mainly contains physics and chemistry-Mechanical Method.(1) fusing point of utilize aluminium, moulding different (fusing point of aluminium is 660 ℃, and the fusing point of LDPE is 107～120 ℃) makes the plastics pyrolytic gasification, reclaims aluminium foil, and the plastics of gasification are used for generating.But the method has caused a large amount of waste of plastics.(2) utilize the oxide of aluminium and aluminium to be dissolved in the character of soda acid, with acid or alkali aluminium is dissolved, thus recycled plastic.But this method exists the reaction time to grow, separate thoroughly, extract the problems such as aluminium difficulty from solution.(3) utilize some acid organic solvents can permeate the faying face that LDPE arrives plastic-aluminum, in connection with the alumina dissolution of face, thereby reach the effect of aluminum-plastic separation.Organic acid can be formic acid, acetic acid, propionic acid and butyric acid, but this method is take consumption acids as prerequisite, and cost recovery is large, separates the bad processing of waste liquid.(4) utilize single organic solvent (such as benzene, acetone, carrene etc.) to process and separate plastic-aluminum.Yet find through experimental study, when using acetone, these single organic solvent of carrene, plastics are separated with aluminium foil, and can directly LDPE be dissolved when using benzene class single organic solvent, can't recycled plastic.Therefore to have use amount large for single organic solvent, and cost is high, the defectives such as inferior separating effect.
Summary of the invention
Technical problem to be solved by this invention provides the aluminum-plastic packaged box of a kind of paper and reclaims separation method, and cost is low, organic efficiency is high, and can not produce pollution to environment.
For achieving the above object, the invention provides the aluminum-plastic packaged box of a kind of paper and reclaim separation method, get the aluminum-plastic packaged box of paper, after the dispersion treatment, screening is isolated paper pulp fiber and is used for the cellulose higher value application in the waterpower dispersion machine, and remaining is the aluminum composite material; With the aluminum composite material that obtains with after release agent mixes, gentle agitation is until isolate aluminium and plastics fully, at last the aluminium of separating is cleaned respectively and can adopt low dense the separation by described waterpower dispersion machine with plastics, wherein, the mass concentration of described slurry is 1～5%; Described aluminum composite material guarantees the amount of liquid submergence aluminium plastic material of release agent with after release agent mixes; The solid-to-liquid ratio of described aluminum composite material and release agent is 60g/L, the component of described release agent and percent by volume are: benzene: 20～80%, absolute ethyl alcohol: 10～45%, water: 10～80%, each component of described release agent adds up to 100% according to percent by volume.
As the preferred embodiments of the present invention, during screening, adopting seam wide is the slotted screen of 0.10～0.15mm, and the stock quality concentration during screening is 0.8～1.0%;
As the preferred embodiments of the present invention, the dispersion treatment condition of described waterpower dispersion machine is: rotating speed 500～1000r/min, and temperature: 30～50 ℃, the pH value is 7～8, and the time of discongesting is 10～20min;
As the preferred embodiments of the present invention, described aluminum composite material and release agent are to carry out in the container of 60 ℃ of constant temperature;
As the preferred embodiments of the present invention, described aluminum composite material during cleaning, at first is 50～80% ethanolic solution cleaning with concentration after release agent separates, and removes the benzene on the plastic-aluminum, and then washes with clear water.
The aluminum-plastic packaged box of paper of the present invention reclaims separation method and has the following advantages at least: the inventive method can be separated respectively with plastics aluminium, and cost is low, organic efficiency is high, can not produce pollution to environment.In addition, the present invention is on the basis of fiber recovery and higher value application, after adopting the second alcohol and water suitably to dilute benzene, process aluminum composite, effectively swelling LDPE, reduce the adhesion between plastic-aluminum, with the complete separation of aluminum composite material, the aluminium foil after the separation and the yield of plastics are all very high, reach more than 95% fast, waste liquid after the separation also can reclaim and reuse very easily, it serves to show that this is the effective way of aluminum-plastic separation and recovery.
The specific embodiment
The below is described in detail for the inventive method:
Embodiment 1
The aluminum-plastic packaged box of paper is cut into the block size of 40 * 40mm, be 500r/m at rotating speed, pH is 7, and temperature is 40 ℃, and the mass concentration of slurry is dispersion treatment in 1% the waterpower dispersion machine, the time of discongesting is 20min, then adopt seam wide for the slotted screen of 0.1mm screens, during screening, the mass concentration of slurry is 0.8%, the paper pulp fiber that obtains after the screening is used for the cellulose higher value application, and remaining is the aluminum composite material; The aluminum composite material that obtains and release agent are put into 60 ℃ of constant temperature by the solid-to-liquid ratio of 60g/L container, guarantee the amount of liquid submergence aluminium plastic material of release agent, gentle agitation 3min, can isolate plastic-aluminum fully, be that 50% ethanolic solution cleans with concentration at first with the plastic-aluminum separated, remove the benzene on the plastic-aluminum, and then wash with clear water.
By this method, the separation rate of its paper pulp fiber is up to 100%, and the yield of paper pulp fiber is 95%; The aluminum-plastic separation rate reaches 100%, and the plastics yield is 95%, and the aluminium yield is 100%.
Described release agent is that 30% benzene, 20% absolute ethyl alcohol, 50% water form by percent by volume.
Embodiment 2
The aluminum-plastic packaged box of paper is cut into the block size of 50 * 50mm, be 700r/m at rotating speed, pH is 7, and temperature is 50 ℃, and the mass concentration of slurry is dispersion treatment in 3% the waterpower dispersion machine, the time of discongesting is 15min, then adopt seam wide for the slotted screen of 0.13mm screens, during screening, the mass concentration of slurry is 0.9%, the paper pulp fiber that obtains after the screening is used for the cellulose higher value application, and remaining is the aluminum composite material; The release agent of the aluminum composite material that obtains and liquid is put into the container of 60 ℃ of constant temperature by the solid-to-liquid ratio of 60g/L, guarantee the amount of liquid submergence aluminium plastic material of release agent, gentle agitation 6min, can isolate plastic-aluminum fully, be that 60% ethanolic solution cleans with concentration at first with the plastic-aluminum separated, remove the benzene on the plastic-aluminum, and then wash with clear water.
By this method, the separation rate of its paper pulp fiber reaches 100%, and the yield of paper pulp fiber is 93%; The aluminum-plastic separation rate reaches 100%, and the plastics yield is 96%, and the aluminium yield is 100%.
Described release agent is that 25% benzene, 30% absolute ethyl alcohol, 45% water form by percent by volume.
Embodiment 3
The aluminum-plastic packaged box of paper is cut into the block size of 50 * 50mm, be 1000r/m at rotating speed, pH is 8, and temperature is 50 ℃, and starching dense is dispersion treatment in 5% the waterpower dispersion machine, the time of discongesting is 10min, then adopt seam wide for the slotted screen of 0.15mm screens, during screening, the mass concentration of slurry is 1.0%, the paper pulp fiber that obtains after the screening is used for the cellulose higher value application, and remaining is the aluminum composite material; The release agent of the aluminum composite material that obtains and liquid is put into the container of 60 ℃ of constant temperature by the solid-to-liquid ratio of 60g/L, guarantee the amount of liquid submergence aluminium plastic material of release agent, gentle agitation 10min, can isolate plastic-aluminum fully, be that 80% ethanolic solution cleans with concentration at first with the plastic-aluminum separated, remove the benzene on the plastic-aluminum, and then wash with clear water.
By this method, the separation rate of its paper pulp fiber reaches 100%, and the yield of paper pulp fiber is 92%; The aluminum-plastic separation rate reaches 100%, and the plastics yield is 93%, and the aluminium yield is 100%.
Described release agent is that 40% benzene, 20% absolute ethyl alcohol, 40% water form by percent by volume.
Release agent of the present invention can dissolve the plastics of certain mass behind the certain number of times of Reusability, leave standstill AUTOMATIC ZONING after a period of time, benzene is positioned at the upper strata of release agent, and ethanol and water level are in lower floor, the plastic layer of dissolving reclaims respectively benzene layer and alcohol-water layer between up and down two-layer.Plastic layer is recyclable dissolved plastics and organic solvent after 90 ℃ of heating evaporation release agents.
In the aluminum composite material that the aluminum-plastic packaged box of paper of the present invention obtains after waterpower dispersion machine and screening, aluminium foil is different from the bonding mode of both sides plastics, one side is to make adhesive with molten polyethylene, opposite side is bonding with organic bond, separation method commonly used is difficult to aluminium foil is separated fully with plastics, and separation purity and yield are also lower.And after adopting release agent of the present invention to process, can be with aluminium, mould fully and separate.
What deserves to be explained is: the inventive method is on the basis of fiber recovery and higher value application, after adopting the second alcohol and water suitably to dilute benzene, process aluminum composite, effective swelling LDPE, reduce the adhesion between plastic-aluminum, fast with the complete separation of aluminum composite material, the yield of aluminium foil and plastics is all very high after separating, reach more than 95%, the waste liquid after the separation also can reclaim and reuse very easily.
In the methods of the invention, the purpose of gentle agitation is that the aluminum composite material is fully contacted with release agent, prevents the release agent layering.The a small amount of benzene that is stained with on aluminium after the separation, the plastics, the ethanol with 50～80% cleans, and again with the clear water flushing, removes a small amount of ethanol that its surface has at last.
The above only is one embodiment of the present invention, it or not whole or unique embodiment, the conversion of any equivalence that those of ordinary skills take technical solution of the present invention by reading specification of the present invention is claim of the present invention and contains.
Claims (6)
1. the aluminum-plastic packaged box of paper reclaims separation method, it is characterized in that: get the aluminum-plastic packaged box of paper, after the dispersion treatment, screening is isolated paper pulp fiber and is used for the cellulose higher value application in the waterpower dispersion machine, and remaining is the aluminum composite material; With after release agent mixes, gentle agitation is until isolate aluminium and plastics fully with the aluminum composite material that obtains, the aluminium separated and plastics cleaned respectively to get final product at last; Described waterpower dispersion machine adopts low dense separation, and wherein, the mass concentration of described slurry is 1～5%; Described aluminum composite material guarantees the amount of liquid submergence aluminium plastic material of release agent with after release agent mixes; The solid-to-liquid ratio of described aluminum composite material and release agent is 60g/L, the component of described release agent and percent by volume are: benzene: 20～80%, absolute ethyl alcohol: 10～45%, water: 10～80%, each component of described release agent adds up to 100% according to percent by volume.
2. the aluminum-plastic packaged box of paper as claimed in claim 1 reclaims separation method, it is characterized in that: during screening, adopting seam wide is the slotted screen of 0.10～0.15mm, and the stock quality concentration during screening is 0.8～1.0%.
3. the aluminum-plastic packaged box of paper as claimed in claim 1 reclaims separation method, and it is characterized in that: the dispersion treatment condition of described waterpower dispersion machine is: rotating speed 500～1000r/min, temperature: 30～50 ℃, the pH value is 7～8, and the time of discongesting is 10～20min.
4. the aluminum-plastic packaged box of paper as claimed in claim 1 reclaims separation method, and it is characterized in that: described aluminum composite material and release agent are to carry out in the container of 60 ℃ of constant temperature.
5. the aluminum-plastic packaged box of paper as claimed in claim 1 reclaims separation method, it is characterized in that: described aluminum composite material during cleaning, at first is 50～80% ethanolic solution cleaning with mass concentration after release agent separates, remove the benzene on aluminium and the plastics, and then wash with clear water.
6. the aluminum-plastic packaged box of paper reclaims separation method, it is characterized in that: described is 500～1000r/m with the aluminum-plastic packaged box of paper at rotating speed, the pH value is 7～8, temperature is 30～50 ℃, the mass concentration of slurry is to disperse in 1～5% the waterpower dispersion machine, the time of discongesting is 10～20min, then wide at seam is to screen in the slotted screen of 0.10～0.15mm, when wherein screening, the mass concentration of slurry is 0.8～1.0%, the paper pulp fiber that obtains after the screening is used for the cellulose higher value application, and remaining is the aluminum composite material; The aluminum composite material that obtains and release agent are put into 60 ℃ of constant temperature by the solid-to-liquid ratio of 60g/L container, guarantee the amount of liquid submergence aluminium plastic material of release agent, gentle agitation 3～10min, can isolate aluminium and plastics fully, be that 50～80% ethanolic solution cleans with concentration at first with the aluminium separated and plastics, remove the benzene on aluminium and the plastics, and then wash with clear water; The component of described release agent and percent by volume are: benzene: 20～80%, and absolute ethyl alcohol: 10～45%, water: 10～80%, each component of described release agent adds up to 100% according to percent by volume.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100082722A CN102166579B (en) | 2011-01-14 | 2011-01-14 | Method for recycling and separating paper, aluminum and plastic packaging boxes |
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| CN2011100082722A CN102166579B (en) | 2011-01-14 | 2011-01-14 | Method for recycling and separating paper, aluminum and plastic packaging boxes |
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| CN102166579A CN102166579A (en) | 2011-08-31 |
| CN102166579B true CN102166579B (en) | 2013-02-13 |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI458571B (en) * | 2012-12-20 | 2014-11-01 | Univ Far East | A method for regenerating composite sheet by recycling bag |
| CN103722000B (en) * | 2013-12-26 | 2016-04-13 | 青岛福创环境科技有限公司 | The recovery method of waste and old paper or paper aluminium packaging material |
| AU2015349557B2 (en) | 2014-11-20 | 2019-08-08 | Juarez Souza De OLIVEIRA | Process for recycling by separating the constituents of aluminized and plasticized, optionally carton, containers, and respective equipment |
| BR102014028989A2 (en) * | 2014-11-20 | 2017-11-07 | Souza De Oliveira Juarez | PROCESS FOR RECYCLING THROUGH SEPARATION OF THE CONSTITUENTS OF ALUMINIZED AND PLASTICATED CARTONED PACKAGING |
| CN104690082B (en) * | 2015-01-16 | 2017-02-22 | 诸城市天工造纸机械有限公司 | Waste soft beverage package recycling technological process |
| CN104744724A (en) * | 2015-04-21 | 2015-07-01 | 戴翔辉 | Aluminium-plastic separating agent and method for carrying out aluminium-plastic separation by utilizing aluminium-plastic separating agent |
| BR102015010230B1 (en) * | 2015-05-05 | 2021-06-01 | Ecs Consultoria Em Materiais E Tecnologia Ambientais Ltda Me | RECYCLING PROCESS OF METALLIC PLASTIC PACKAGING |
| CN106180156B (en) * | 2016-09-05 | 2018-06-22 | 漳州市陆海环保产业开发有限公司 | One specific admixture aluminium paper moulds the value-added technique of sub-prime of waste material |
| CN106497113A (en) * | 2016-10-11 | 2017-03-15 | 常州市鼎升环保科技有限公司 | A kind of high stability is electromagnetically shielded the preparation method of fibre board |
| CN109261688B (en) * | 2018-08-31 | 2021-07-09 | 曲靖宏程工贸有限公司 | Recovery treatment process of waste aluminum foil composite paper |
| WO2020132733A1 (en) * | 2018-12-27 | 2020-07-02 | Companhia Brasileira De Alumínio | Aluminium recovery method |
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| CN1051880A (en) * | 1989-11-24 | 1991-06-05 | 中国石油化工总公司抚顺石油化工研究院 | Scrap electrical wires, electrical cables separate reclaim the method for metallic conductor and plastics |
| US5232489A (en) * | 1990-09-13 | 1993-08-03 | Rwe Entsorgung Aktiengesellschaft | Process for the recovery of metals and coating materials from composite materials |
| CN101054779B (en) * | 2006-04-14 | 2012-05-16 | 吴宸澔 | Regeneration method for waste composite paper film |
| CN101891903B (en) * | 2009-05-20 | 2012-04-25 | 中国环境科学研究院 | Method for separating paper plastic-aluminum composite packing waste |
| CN101773923A (en) * | 2009-12-29 | 2010-07-14 | 清华大学 | Method for resource treatment of paper-aluminum-plastic or aluminum-plastic composite packaging waste on basis of pyrolysis technique |
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