CN104631177A - Waste aluminum foil-based aluminum paper bioseparation method - Google Patents
Waste aluminum foil-based aluminum paper bioseparation method Download PDFInfo
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- CN104631177A CN104631177A CN201510049562.XA CN201510049562A CN104631177A CN 104631177 A CN104631177 A CN 104631177A CN 201510049562 A CN201510049562 A CN 201510049562A CN 104631177 A CN104631177 A CN 104631177A
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- CN
- China
- Prior art keywords
- aluminium
- paper
- aluminum
- foil
- agent
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Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
- D21C5/005—Treatment of cellulose-containing material with microorganisms or enzymes
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
- D21C5/02—Working-up waste paper
-
- 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
- Y02W30/64—Paper recycling
Abstract
The invention discloses a waste aluminum foil-based aluminum paper bioseparation method, which comprises the following steps: soaking, adding a biological separation aid, stirring, extracting aluminum through an aluminum extractor, repeatedly removing sand for extracting aluminum, filtering paper pulp through an inclined screen, and the like. When the aluminum foil is compounded, the majority of glue between the aluminum and paper is white latex, starch and 107 glue, the crucial point of the aluminum-paper separation is to accelerating the dissolving of an adhesive, the adhesive is always not thoroughly dissolved under conventional soaking and stirring conditions although can be dissolved in water, and the biological separation aid is added during the soaking and stirring procedures so as to accelerate the dissolving of the adhesive, so that the stirring and soaking time can be shortened, the recovery of the aluminum and the paper pulp can be increased, and no pollution of three wastes exists.
Description
Technical field
the invention belongs to the recovery technology of aluminium scrap, particularly relate to a kind of aluminium paper Bio-separation method based on aluminium-foil scrap.
Background technology
along with science and technology and the development of national economy, aluminium foil is applied more and more extensive in packaging, electron trade, and also very rapidly, annual production is more than 80,000 t, and wherein 80% ~ 90% for the packaging of cigarette, candy and articles for daily use in the aluminium foil production development of China.At present, these wrapping papers all abandon as rubbish with rear, and this not only wastes resource, also cause environmental pollution.The leftover bits cut down in aluminium foil production process in addition are not also well processed.Therefore the recycling of aluminium-foil scrap has realistic meaning.
find through retrieval, Chinese patent discloses " a kind of aluminium of waste aluminium foil paper rim charge, paper is separated and recovery technology ", Authorization Notice No. CN1115436C, its method first uses hot-water soak, use cold water soak again, and need to add in hot-water soak 0.1-1% concentration by sodium carbonate or NaOH or other salting liquid, solution temperature controls more than 60 degree, and then enter cold water soak, this " cold and hot two sections of infusion methods add stirring " is although can improve the separating effect of aluminium paper, but also there is following problem: one is that water heating is needed the energy, energy waste certainly will be caused, particularly during large-scale production, using amount of hot water is large, operate cumbersome, two is add various salt, easily produces waste material, waste water is discharged, contaminated environment, three is to obtain good separating effect, General Requirements mixing time is long, because the aluminium lamination of aluminium-foil paper is very thin, the integrality of aluminium lamination must be destroyed during stirring, in fact the process stirred is exactly the process pulverized, containing many aluminium slags in this paper pulp obtained after agitation and filtration, not only affect the rate of recovery of aluminium, also have impact on the quality of paper.
as everyone knows, glue majority between aluminium-foil paper compound tense aluminium and paper is white glue with vinyl, starch based, 107 glue, the key that aluminium paper is separated to accelerate the dissolving of this adhesive, although this adhesive can be water-soluble, but often dissolve thorough under the soaking and stirring condition of routine, have influence on the recovery of lower step operation to aluminium and paper pulp.
Summary of the invention
order of the present invention is to provide a kind of paper aluminium paper Bio-separation method of aluminium-foil scrap, specifically adopt immersion add biology help stir from agent, carry that aluminium (granularity is greater than 1) carried by aluminium machine, aluminium (granularity is less than 1) is carried in three desanding, oblique net filtration paper pulp.
the object of the invention is to be achieved through the following technical solutions, the aluminium paper Bio-separation method of this aluminium-foil scrap comprises the following steps:
1. making beating is soaked: adopt clear water to add biology and help and make medium from agent, be immersed by aluminium-foil paper, immersion limit, limit is stirred, and 30-50 minutes time, adds biology and helps the amount from agent to be 0.5-1.5% of clear water weight, break into the slurry aluminium mixture of concentration 15%.
2. hydraulic carries aluminium: by carrying aluminium machine, utilize the different of paper pulp fiber and aluminium foil volume or density, with clear water as medium, under the effect of waterpower, by direct for the aluminium of more than 1mm separation and Extraction, paper pulp fiber is separated with aluminium foil, utilize the difference of separately the latter two volumes or density, the two be thoroughly separated, the aluminium of paper pulp and below 1mm is stayed in pond.Because fiber and aluminium foil density difference are not too large, more because aluminium foil is very thin, specific area is larger, the tension force of water is also large, especially when being in vertical water flow direction, and can be inseparable with fiber, when therefore operating, the size of waterpower intensity should be grasped, just can reach high separating effect.
3. desanding formula carries aluminium: the aluminium of below 1mm and paper pulp are separated with three sections of desanders, aluminium enters desanding basin, and paper pulp enters paper pulp pond.
4. paper pulp filtering concentrates: filtered by wood pulp with oblique net, pulp-water is separated, and water returns storage cistern, and paper pulp pond stayed by slurry, then is separated with pulp-water seperator, and wood pulp is condensed into about 30%, and water returns storage cistern again, thus reaches the object of recycle.
preferably, step 1. in biology help the amount from agent to be 1% of clear water weight.
described step 1. in biology help and from agent be: amylase and protease equal proportion are mixed, described amylase be α-amylase (EC3.2.1.1.), beta amylase (EC3.2.1.2.) one or both; Described protease is a kind of of cathepsin, papain and subtilopeptidase A or wherein two kinds.
beneficial effect of the present invention: help from agent owing to adding biology in soaking and stirring operation, significantly accelerate the dissolving of the adhesive between aluminium-foil paper compound tense aluminium and paper, accelerate the separation of aluminium paper, shorten the soaking and stirring time, improve the rate of recovery of aluminium paper slurry, and owing to being that biology helps from agent, no waste discharge, pollution-free.
soaking operation to the impact of aluminium paper separating rate for verifying that biology helps further from agent, We conducted contrast test:
1, difference helps from the impact of agent on separating effect, in table 1.
table 1 difference helps from the impact of agent on separating effect
help and reclaim aluminium quality from agent kind class separability pulp quality
ethanol class 26% is without the impact of impact nothing
acetone 32% has taste without impact
biology helps from agent 96% without the impact of impact nothing
can find out from upper table, compare with ethanol class, acetone, biology helps the separating effect from agent best, and on pulp quality and reclaim aluminium quality all without affect.
2, soak time is on the impact of separating effect
bonding between aluminium with paper has certain resistance to water, adds to help to carry out immersion from agent solution and can accelerate separating rate, but soak time is grasped bad, will affect separating effect and aluminium paper quality, and long soaking time reclaims the too broken sad filter of paper pulp.Time is too short, not easily comes unstuck.Mixing time increases, and aluminium paper becomes broken also difficult and is separated.Therefore the soak time be applicable to also is the key that aluminium paper is separated, in table 2.
table 2 soak time is on the impact of separating effect
soak time (minute) 369 12 15
degumming degree 70% 96% 100% 100% 100%
on paper pulp impact nothing nothing without broken
on the impact of aluminium without without without without broken
as can be seen from Table 2, soak time between 6-9 minute, on paper pulp and reclaim aluminium quality all without affect, the effect that aluminium paper comes unstuck can be reached again.
3, biology helps amount from agent on the impact of separating effect
biology helps how many consumptions from agent is also the principal element affecting the separation of aluminium paper paper tinsel, will affect the quality of paper pulp and recovery aluminium too much, also can increase cost recovery simultaneously, will affect separating effect very little.Table 3 is the impacts on separating effect of degumming agent consumption.
table 3 biology helps amount from agent on the impact of separating effect
consumption % separation degree is on the impact of the impact of paper pulp on recovery aluminium
0.5 60% without nothing
1.0 100% without nothing
1.5 100% without nothing
2.0 100% without nothing
as can be seen from Table 3, biology helps the consumption from agent to select 1.0%-2.0%, can obtain optimal separation effect, consider from cost recovery, selects 1.0 % i.e. economy but also effective.
Detailed description of the invention
the aluminium paper separation method of this aluminium-foil scrap comprises the following steps:
1. making beating is soaked: adopt clear water to add biology and help and make medium from agent, be immersed by aluminium-foil paper, immersion limit, limit is stirred, 45 minutes time, adding the biology be mixed by amylase and protease equal proportion helps the amount from agent to be 1% of clear water weight, breaks into the slurry aluminium mixture of concentration 15%.
2. hydraulic carries aluminium: by carrying aluminium machine, utilize the different of paper pulp fiber and aluminium foil volume or density, with clear water as medium, under the effect of waterpower, by direct for the aluminium of more than 1mm separation and Extraction, paper pulp fiber is separated with aluminium foil, utilize the difference of separately the latter two volumes or density, the two be thoroughly separated, the aluminium of paper pulp and below 1mm is stayed in pond.Because fiber and aluminium foil density difference are not too large, more because aluminium foil is very thin, specific area is larger, the tension force of water is also large, especially when being in vertical water flow direction, and can be inseparable with fiber, when therefore operating, the size of waterpower intensity should be grasped, just can reach high separating effect.
3. desanding formula carries aluminium: the aluminium of below 1mm and paper pulp are separated with three sections of desanders, aluminium enters desanding basin, and paper pulp enters paper pulp pond.
4. paper pulp filtering concentrates: filtered by wood pulp with oblique net, pulp-water is separated, and water returns storage cistern, and paper pulp pond stayed by slurry, then is separated with pulp-water seperator, and wood pulp is condensed into about 30%, and water returns storage cistern again, thus reaches the object of recycle.
Claims (6)
1. based on an aluminium paper Bio-separation method for aluminium-foil scrap, comprise the following steps: 1. soak that making beating, 2. hydraulic carry aluminium, that 3. desanding formula carries aluminium, 4. paper pulp filtering is concentrated, it is characterized in that 1. soaking in pulping process in step adding biology and helping from agent.
2. a kind of aluminium paper Bio-separation method based on aluminium-foil scrap according to claim 1, is characterized in that adding biology helps the amount from agent to be 0.5-1.5% of clear water weight.
3. the aluminium paper separation method of a kind of aluminium-foil scrap according to claim 1, is characterized in that adding biology helps the amount from agent to be 1% of clear water weight.
4. a kind of aluminium paper Bio-separation method based on aluminium-foil scrap according to claim 1, it is that amylase and protease equal proportion are mixed that the biology that it is characterized in that during described step 1. helps from agent.
5. a kind of aluminium paper Bio-separation method based on aluminium-foil scrap according to claim 3, it is characterized in that described amylase be α-amylase (EC3.2.1.1.), beta amylase (EC3.2.1.2.) one or both.
6. a kind of aluminium paper Bio-separation method based on aluminium-foil scrap according to claim 3, is characterized in that described protease is a kind of of cathepsin, papain and subtilopeptidase A or wherein two kinds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510049562.XA CN104631177A (en) | 2015-02-01 | 2015-02-01 | Waste aluminum foil-based aluminum paper bioseparation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510049562.XA CN104631177A (en) | 2015-02-01 | 2015-02-01 | Waste aluminum foil-based aluminum paper bioseparation method |
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| CN104631177A true CN104631177A (en) | 2015-05-20 |
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| CN201510049562.XA Pending CN104631177A (en) | 2015-02-01 | 2015-02-01 | Waste aluminum foil-based aluminum paper bioseparation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109821896A (en) * | 2019-02-22 | 2019-05-31 | 天津科技大学 | A kind of new method that enzyme pretreatment extracts starch type organic from secondary stock, purifies slurry |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2081766U (en) * | 1989-06-24 | 1991-07-31 | 郭增春 | Separating unit for waste paper-based compound materials |
| US5390860A (en) * | 1992-05-15 | 1995-02-21 | Tetra Laval Holdings & Finance Sa | Method and apparatus for separating paper fiber and plastics from mixed waste materials and products obtained thereby |
| CN1219627A (en) * | 1997-12-07 | 1999-06-16 | 林禄云 | Method for extracting paper pulp and aluminium foil from waste aluminium foil paper |
| CN102575423A (en) * | 2009-10-26 | 2012-07-11 | 巴斯夫欧洲公司 | Method for recycling paper products glued and/or coated with biodegradable polymers |
| CN102744246A (en) * | 2012-07-25 | 2012-10-24 | 中国环境科学研究院 | Separating agent recovery horizontal-type continuous separation system of aluminum-plastic compound package material |
-
2015
- 2015-02-01 CN CN201510049562.XA patent/CN104631177A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2081766U (en) * | 1989-06-24 | 1991-07-31 | 郭增春 | Separating unit for waste paper-based compound materials |
| US5390860A (en) * | 1992-05-15 | 1995-02-21 | Tetra Laval Holdings & Finance Sa | Method and apparatus for separating paper fiber and plastics from mixed waste materials and products obtained thereby |
| CN1219627A (en) * | 1997-12-07 | 1999-06-16 | 林禄云 | Method for extracting paper pulp and aluminium foil from waste aluminium foil paper |
| CN102575423A (en) * | 2009-10-26 | 2012-07-11 | 巴斯夫欧洲公司 | Method for recycling paper products glued and/or coated with biodegradable polymers |
| CN102744246A (en) * | 2012-07-25 | 2012-10-24 | 中国环境科学研究院 | Separating agent recovery horizontal-type continuous separation system of aluminum-plastic compound package material |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109821896A (en) * | 2019-02-22 | 2019-05-31 | 天津科技大学 | A kind of new method that enzyme pretreatment extracts starch type organic from secondary stock, purifies slurry |
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Application publication date: 20150520 |