CN101664752A - Method of recovering inorganic pigment from decorative paper factory waste residue - Google Patents
Method of recovering inorganic pigment from decorative paper factory waste residue Download PDFInfo
- Publication number
- CN101664752A CN101664752A CN200910153165A CN200910153165A CN101664752A CN 101664752 A CN101664752 A CN 101664752A CN 200910153165 A CN200910153165 A CN 200910153165A CN 200910153165 A CN200910153165 A CN 200910153165A CN 101664752 A CN101664752 A CN 101664752A
- Authority
- CN
- China
- Prior art keywords
- solid
- waste residue
- inorganic pigment
- decorative paper
- factory
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 239000002699 waste material Substances 0.000 title claims abstract description 28
- 239000001023 inorganic pigment Substances 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000007787 solid Substances 0.000 claims abstract description 21
- 239000007788 liquid Substances 0.000 claims abstract description 13
- 238000000926 separation method Methods 0.000 claims abstract description 12
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 238000001035 drying Methods 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 5
- 239000002002 slurry Substances 0.000 claims description 13
- 238000007599 discharging Methods 0.000 claims description 11
- 238000002309 gasification Methods 0.000 claims description 8
- 238000012856 packing Methods 0.000 claims description 6
- 238000010298 pulverizing process Methods 0.000 claims description 2
- 238000000227 grinding Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000003756 stirring Methods 0.000 abstract description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 2
- 239000011707 mineral Substances 0.000 abstract description 2
- 239000003795 chemical substances by application Substances 0.000 abstract 3
- 238000004513 sizing Methods 0.000 abstract 3
- 238000007865 diluting Methods 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 2
- 238000004806 packaging method and process Methods 0.000 abstract 2
- 238000007789 sealing Methods 0.000 abstract 2
- 239000003973 paint Substances 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 8
- 239000000835 fiber Substances 0.000 description 7
- 241000202567 Fatsia japonica Species 0.000 description 5
- 238000004064 recycling Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000005995 Aluminium silicate Substances 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 2
- 235000012211 aluminium silicate Nutrition 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 235000013980 iron oxide Nutrition 0.000 description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 235000010215 titanium dioxide Nutrition 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920001732 Lignosulfonate Polymers 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical class [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
Landscapes
- Paper (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a method of recovering inorganic pigment from decorative paper factory waste residue, comprising the following steps: (1) diluting waste residue into sizing agent: diluting thewaste residue with water and evenly stirring, wherein waste residue dry matter accounts for 10-35% of the total weight of the sizing agent; (2) liquefying or gasifying the sizing agent in a sealing environment: heating in a sealing environment to 250-400 DEG C for liquefying for 0.5-5 hours, or heating to 400-550 DEG C for gasifying for 5-30 minutes, and unloading after cooling; (3) solid-liquidseparation: performing solid-liquid separation for unloaded material by a centrifugal machine or a plate-and-frame filter press; and (4) drying, grinding and packaging solid matters; drying or naturally drying the solid matter after solid-liquid separation, grinding the solid matter into powder of 100-500 meshes, packaging and leaving factory after testing. The inorganic pigment recovered with themethod can be used in decorative paper factories and paint factories, can change harm into treasure, saves mineral which is nonrenewable resource, lowers production cost and protects local environment.
Description
Technical field
The present invention relates to from the mud that decorative paper factory is processed to form, isolate the method for inorganic pigment.
Background technology
Paper plant is because of the paper of production different cultivars, contain heterogeneity in its black liquor, waste residue or the mud, for decorative paper factory, except that the paper fiber, mainly be the inorganic pigments such as titanium dioxide, kaolin, iron oxide red and iron oxide yellow that account for dry matter weight 60%-70% in its waste residue.For many years, the black liquor of all kinds of paper plants and mud are all made refuse, or discharging or landfill, are endangering environment.In recent years from black liquor, extract the technology of inventive application paper plant sewage such as lignosulfonate and mud, gradually see announcement.CN1277986 has announced Wen Zhanjun's " paper mill waste liquid subtraction process zero-emission " patented technology, black liquor is carried out harmless treatment after, again solid content is made recycling treatment, reach zero-emission.CN101391766 discloses Guangxi University's " method of preparing active carbon from pulping paper mill sludge ", also is the good method with paper plant's recycling sludge.By retrieval and market survey, still find no the pass and reclaim the document announcement and the material object of the method for inorganic pigment appear on the market from decorative paper factory waste residue, these inorganic pigments are big at the consumption of decorative paper factory, and are expensive, ten thousand yuan/ton of present price 0.5-2.Carry out recycling, to saving resource, reducing cost and environmental protection has great significance.
Summary of the invention
At recycling inorganic pigment one thing in the decorative paper factory waste residue not being caused the situation of paying close attention to and proposing technical scheme as yet at present, the technical problem to be solved in the present invention provides a kind of method that reclaims inorganic pigment from decorative paper factory waste residue.
The technical scheme that solves the problems of the technologies described above is: this method is carried out as follows: (1) waste residue is diluted to slurry: waste residue is dropped in the reactor, and dilute with water is mixed thoroughly, and wherein the waste residue dry accounts for the 10%-35% of slurry gross weight; (2) slurry liquefies in closed environment or gasifies: fasten charging, the discharging opening of reactor, the airtight 250-400 of being heated to ℃ liquefied 0.5-5 hour, cooling back discharging; Or add to 400-550 ℃ and gasified 5-30 minute, cooling back discharging; (3) Separation of Solid and Liquid: the material that the back of will liquefying or gasify is unloaded, carry out Separation of Solid and Liquid with centrifuge or plate and frame filter press, the drainage after the gasification directly discharges, the discharging after purifying again of the drainage after the liquefaction; (4) drying of solid, pulverizing and packing: the solid after Separation of Solid and Liquid is dried or air dry, is ground into 100-500 order order powdery, and check back packing is dispatched from the factory, and becomes the inorganic pigment of usefulness again.
The invention has the beneficial effects as follows: environmentally hazardous decorative paper factory waste residue is changed harmful to treasure,, saved mineral resources, reduced paper plant's production cost, protected local environment the recycling of inorganic pigment.
The specific embodiment
The present invention is described in further detail below in conjunction with embodiment: when decorative paper factory is produced, need to mix with paper pulp fiber with inorganic pigments such as a large amount of titanium dioxides, kaolin, iron oxide red and iron oxide yellows, part inorganic pigment plays bridging effect attached to fiber surface, in the operation of these paper pulp fibers through being rolled into paper with pulp-water with not attached to the inorganic pigment granules in the fiber, the slurry that all cancels is assembled, precipitation or stacking are got up, and become waste residue.The present invention is that raw material dilutes with this waste residue exactly, and proper dilution ratio is decided to be the 10-35% that the waste residue dry accounts for the slurry after dilution gross weight, theoretically, accounts for 5% and 50% all recyclable inorganic pigments, and thin work efficiency is low, energy consumption is big but cross.The thick recovery of overrich is not thorough, wastes raw material.
Slurry liquefies in closed reaction kettle or gasifies and all can, condensing temperature is lower than gasification, be 250-400 ℃, time long, need 0.5-5 hour, materials such as paper fiber hydrolysis saccharogenesis aldehydes, tar class, ketone and ester class after the liquefaction, filtrate after the Separation of Solid and Liquid can not directly be discharged, should carry out qualified discharge after the purified treatment again, this is the task beyond the present invention, does not give unnecessary details.If gasification then need be heated to 400-550 ℃, time 5-30 minute, the paper fiber can gasify fast, finally with CO, CO
2And H
2Gaseous state row to atmosphere or do combustion gas and use.Filtrate after the Separation of Solid and Liquid is up to standard, can directly discharge.In a word, temperature is on the low side based on liquefaction, and temperature drift based on gasification.Gasification and liquefaction required time are the time of taking all factors into consideration temperature-rise period to gasify and liquefy to such an extent that thoroughly come to decide with making every effort to.
Water content requirement 8%-12% after the solid drying is ground into behind the 100-500 order and remakes the pigment utilization for decorative paper factory, coating factory.
Now waste residue thinner ratio, liquefaction and gasification temperature and time, drying and grinding particle size are listed in the table below with seven embodiment forms:
Embodiment 1 (corresponding embodiment 1 projects and the parameter of table in the contrast): waste residue dilute with water form slurry, the waste residue dry accounts for slurry total important 10%, heat to 250 ℃ reactor is airtight after stirring, liquefaction reaction 5 hours is cooled to 50 ℃ of dischargings, carry out Separation of Solid and Liquid with centrifuge after, solid is dried, moisture content 12% is ground into 100 order powderies, and check, packing are dispatched from the factory.
Embodiment 4 (corresponding embodiment 4 projects and the parameter of table in the contrast): waste residue dilute with water form slurry, the waste residue dry accounts for 25% of slurry gross weight, after stirring reactor is closed tight, airtightly be heated to 400 ℃, gasification reaction 30 minutes is after cooling (also can not cooling off) discharging is carried out Separation of Solid and Liquid to plate and frame filter press, solid is spread air dry out, moisture content 8.5% is ground into 150 order powderies, and check, packing are dispatched from the factory.
All the other embodiment 2,3,5,6,7 reclaim inorganic pigment all by corresponding project of last table and parameter with reference to embodiment 1 and 4 same procedure.
Claims (1)
1, a kind of method that reclaims inorganic pigment from decorative paper factory waste residue is characterized in that carrying out as follows:
(1) waste residue is diluted to slurry: waste residue is dropped in the reactor, and dilute with water is mixed thoroughly, and wherein the waste residue dry accounts for the 10%-35% of slurry gross weight;
(2) slurry liquefies in closed environment or gasifies: fasten charging, the discharging opening of reactor, the airtight 250-400 of being heated to ℃ liquefied 0.5-5 hour, cooling back discharging; Or add to 400-550 ℃ and gasified 5-30 minute, cooling back discharging;
(3) Separation of Solid and Liquid: the material that the back of will liquefying or gasify is unloaded, carry out Separation of Solid and Liquid with centrifuge or plate and frame filter press, the drainage after the gasification directly discharges, the discharging after purifying again of the drainage after the liquefaction;
(4) drying of solid, pulverizing and packing: the solid after Separation of Solid and Liquid is dried or air dry, and moisture content 8%-12% is ground into 100-500 order powdery, and check back packing is dispatched from the factory, and becomes the inorganic pigment of usefulness again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910153165A CN101664752A (en) | 2009-09-24 | 2009-09-24 | Method of recovering inorganic pigment from decorative paper factory waste residue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910153165A CN101664752A (en) | 2009-09-24 | 2009-09-24 | Method of recovering inorganic pigment from decorative paper factory waste residue |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101664752A true CN101664752A (en) | 2010-03-10 |
Family
ID=41801616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910153165A Pending CN101664752A (en) | 2009-09-24 | 2009-09-24 | Method of recovering inorganic pigment from decorative paper factory waste residue |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101664752A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106010035A (en) * | 2016-07-15 | 2016-10-12 | 陕西科技大学 | Method for preparing exterior wall paint by utilizing paper mill sludge |
| CN107474890A (en) * | 2017-07-25 | 2017-12-15 | 神华集团有限责任公司 | The processing method and processing unit of coal water slurry gasification waste residue |
| CN107671107A (en) * | 2017-10-26 | 2018-02-09 | 苏州克兰茨环境科技有限公司 | One kind paint slag desiccation thermal oxide system |
-
2009
- 2009-09-24 CN CN200910153165A patent/CN101664752A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106010035A (en) * | 2016-07-15 | 2016-10-12 | 陕西科技大学 | Method for preparing exterior wall paint by utilizing paper mill sludge |
| CN107474890A (en) * | 2017-07-25 | 2017-12-15 | 神华集团有限责任公司 | The processing method and processing unit of coal water slurry gasification waste residue |
| CN107671107A (en) * | 2017-10-26 | 2018-02-09 | 苏州克兰茨环境科技有限公司 | One kind paint slag desiccation thermal oxide system |
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Open date: 20100310 |