CN101367589A - Reutilization process for painting and coating pigment pf paper mill - Google Patents
Reutilization process for painting and coating pigment pf paper mill Download PDFInfo
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- CN101367589A CN101367589A CNA2008101191975A CN200810119197A CN101367589A CN 101367589 A CN101367589 A CN 101367589A CN A2008101191975 A CNA2008101191975 A CN A2008101191975A CN 200810119197 A CN200810119197 A CN 200810119197A CN 101367589 A CN101367589 A CN 101367589A
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Abstract
The invention provides a process of recovering and treating the paper mill coating pigment and the secondary use as the coating pigment. The process comprises flocculating, inclined lamellar precipitation, oxidation and viscosity reduction, turbine centrifugation and vertical foundry mill. The treatment object is the paper mill coating wastewater. The step of the process is simple, and the process can not generate the secondary pollution. The quality of the products passes the coating tests and the paper reaches the related standards of the enterprise. The process is a novel technology with environmental benefit, economic benefit and social benefit.
Description
Technical field:
The present invention relates to a kind of recycling technology of industrial solid castoff, especially relate to the recovery, processing of painting and coating pigment pf paper mill and again as the technology of coating pigment.
Technical background:
In recent years because the expansion of China's paper industry scale, there is every year the mud of up to ten million tons to result from and copies paper and paper waste treating processes, to environment protection huge challenge has been proposed.Be accompanied by the development of paper mill secondary stock recovery and utilization technology, the ratio of mineral filler and pigment is increased to 30～40% by 10～20% in the paper mill sludge, is necessary so it is recycled.Japan Nippon paper industry company limited has succeeded in developing the method for utilizing paper mill sludge to produce filler, mainly comprises: operations such as mold pressing, drying, carbonization, calcining and pulverizing.Two sections burning paper mill sludges under accurate controlled temperature have been invented by Britain ECC International company, are cleaned and can be used for the technology of coating process pigment.But these technology are because the cost height is not suitable for China's paper mill employing.By analysis, the inorganic paint in paper mill is very most of from coating process, as the pigment in the coating wash-down water is directly reclaimed, has not only alleviated the load of wastewater treatment, more from the source paper mill sludge has been carried out effective decrement.
On the other hand, the demand to papermaking filler, pigment (lime carbonate etc.) in the global range increases year by year, and natural mineral resource is limited after all, and some technology turn on this with the approach of some changing waste into resources.For example, the CN1349861 white clay recovering process relates to a kind of by product---recovery technology of white clay that produces in paper industry is produced, and the white clay after the processing is as the direct backfill of papermaking filler.So, use it for again in the coating process as the coating pigment that reclaims is handled, not only protect environment, more turn waste into wealth, meet the Development patterns of recycling economy.
The recovery of painting and coating pigment pf paper mill, processing and as the technology of coating pigment report is not arranged also both at home and abroad again.
Summary of the invention:
The objective of the invention is to overcome the deficiency in the argumentation, provide a kind of with the method for recycling painting and coating pigment pf paper mill.
Technical scheme of the present invention is as follows:
The present invention includes flocculation, sloping plate deposition, oxidation viscosity reduction, turbine is centrifugal and vertical sand milling, handled to as if paper mill coating waste water, its suspended solid (SS) concentration is 2～3%.
Process flow sheet of the present invention is seen accompanying drawing, below in conjunction with accompanying drawing concrete implementation step is explained:
Flocculation step of the present invention, point in the coating waste water and add inorganic and organic type flocculation agent complex role, comprise the polymer aluminium silicate (self-control) of dosage 0.1～0.5 ‰ and the non-ionic polyacrylamide of dosage 0.05～0.25 ‰, stir 5～10min fast, stir 30～45min more at a slow speed.
In the sloping plate deposition step of the present invention, swash plate has improved deposition efficiency, has realized that coating pigment is master's suspended solid and effectively separating of water, and throw out SS concentration is 10～15%, but the water reuse.
Oxidation viscosity reduction treatment step of the present invention is intended to reduce the sewage sludge viscosity that is rich in pigment that flocculation sediment obtains, and solves the bottleneck problem of its recycling.
In the oxidation viscosity reduction treatment step of the present invention, oxygenant adopts clorox (available chlorine content about 9%), needs to add sodium hydroxide earlier and reconciles pH value 10.5～11.5, adds clorox dosage 2～10% again, the abundant oxidation of stirring at normal temperature 1～3h.
Turbine centrifugation step of the present invention is intended to dewater and is rich in the mud solid content (to 25～30%) of pigment with raising.
Vertical sand milling step of the present invention is intended to make pigment (lime carbonate is main) particle expansion meticulous.
In the vertical sand milling step of the present invention, reclaim pigment and technical grade lime carbonate (400 order) and be used, proportioning can be 5～30%, milling time 25～40min, slurries particle diameter≤2 μ m% are about 65%, slurry solid content about 75%, and the ISO whiteness can reach more than 90%.
Processing step of the present invention succinctly and not produces secondary pollution, and the products obtained therefrom quality is through coated test, and paper reaches enterprise's relevant criterion.This technology is effectively handled for paper mill sludge new way is provided; realized resource recovery; protected ecotope; embodied the 3R (Reduce of waste treatment; Ruse; Recycle) principle meets the Development patterns of recycling economy, is a new technology with environmental benefit, economic benefit and social benefit.
Description of drawings:
Fig. 1 recycles artwork for painting and coating pigment pf paper mill.
The present invention will be further described below by specific embodiment, but and do not mean that limiting the scope of the invention.
Embodiment:
Embodiment 1:
Certain large-scale paper mill coating waste water advances flocculation basin, and the polymer aluminium silicate (self-control) that adds dosage 0.35 ‰ earlier stirs 10min fast, adds the non-ionic polyacrylamide of dosage 0.2 ‰ again, stirs 30min more at a slow speed; The laggard inclined-plate clarifying basin that flocculates precipitates, the supernatant liquor reuse, and sedimentary mud carries out oxide treatment; Add earlier sodium hydroxide and reconcile pH value to 11, add dosage again and be 5% clorox, the abundant oxidation of stirring at normal temperature 2h; The laggard turbine centrifuge of oxidation dewaters; The pigment and the technical grade lime carbonate (400 order) that are recovered to after the oxidation are advanced vertical lapping machine by proportioning 5%, grind 27min, slurries particle diameter≤2 μ m% are 65.4%, slurry solid content 73.9%, ISO whiteness 92.4%.The products obtained therefrom quality becomes the paper rerum natura to see Table 1 through the coated test checking.
Embodiment 2:
Certain large-scale paper mill coating waste water advances flocculation basin, and the polymer aluminium silicate (self-control) that adds dosage 0.5 ‰ earlier stirs 10min fast, adds the non-ionic polyacrylamide of dosage 0.25 ‰ again, stirs 45min more at a slow speed; The laggard inclined-plate clarifying basin that flocculates precipitates, the supernatant liquor reuse, and sedimentary mud carries out oxide treatment; Add earlier sodium hydroxide and reconcile pH value to 11, add dosage again and be 10% clorox, the abundant oxidation of stirring at normal temperature 2h; The laggard turbine centrifuge of oxidation dewaters; The pigment and the technical grade lime carbonate (400 order) that are recovered to after the oxidation are advanced vertical lapping machine by proportioning 10%, grind 26min, slurries particle diameter≤2 μ m% are 64.8%, slurry solid content 73.3%, ISO whiteness 92.3%.The products obtained therefrom quality becomes the paper rerum natura to see Table 1 through the coated test checking.
Embodiment 3:
Certain large-scale paper mill coating waste water advances flocculation basin, and the polymer aluminium silicate (self-control) that adds dosage 0.5 ‰ earlier stirs 10min fast, adds the non-ionic polyacrylamide of dosage 0.25 ‰ again, stirs 45min more at a slow speed; The laggard inclined-plate clarifying basin that flocculates precipitates, the supernatant liquor reuse, and sedimentary mud carries out oxide treatment; Add earlier sodium hydroxide and reconcile pH value to 11, add dosage again and be 10% clorox, the abundant oxidation of stirring at normal temperature 2h; The laggard turbine centrifuge of oxidation dewaters; The pigment and the technical grade lime carbonate (400 order) that are recovered to after the oxidation are advanced vertical lapping machine by proportioning 15%, grind 26min, slurries particle diameter≤2 μ m% are 65.3%, slurry solid content 73.5%, ISO whiteness 92.1%.The products obtained therefrom quality becomes the paper rerum natura to see Table 1 through the coated test checking.
Table 1 coating pigment reuse coated test becomes the paper rerum natura
Claims (8)
1. painting and coating pigment pf paper mill is recycled technology, it is characterized in that: comprise flocculation, sloping plate deposition, oxidation viscosity reduction, turbine is centrifugal and vertical sand milling, handled to as if paper mill coating waste water, its suspended solid (SS) concentration is 2～3%.
2. painting and coating pigment pf paper mill according to claim 1 is recycled technology, it is characterized in that: flocculation step is pointed in the coating waste water and is added inorganic and organic type flocculation agent complex role, comprise the polymer aluminium silicate (self-control) of dosage 0.1～0.5 ‰ and the non-ionic polyacrylamide of dosage 0.05～0.25 ‰, stir 5～10min fast, stir 30～45min more at a slow speed.
3. painting and coating pigment pf paper mill according to claim 1 is recycled technology, it is characterized in that: in the sloping plate deposition step, swash plate has improved deposition efficiency, has realized that coating pigment is master's suspended solid and effectively separating of water, throw out SS concentration is 10～15%, but the water reuse.
4. painting and coating pigment pf paper mill according to claim 1 is recycled technology, and it is characterized in that: oxidation viscosity reduction treatment step is intended to reduce the sewage sludge viscosity that is rich in pigment that flocculation sediment obtains, and solves the bottleneck problem of its recycling.
5. recycle technology according to claim 1 or 4 described painting and coating pigment pf paper mills, it is characterized in that: in the oxidation viscosity reduction treatment step, oxygenant adopts clorox (available chlorine content about 9%), need to add sodium hydroxide earlier and reconcile pH value 10.5～11.5, add clorox dosage 2～10% again, the abundant oxidation of stirring at normal temperature 1～3h.
6. painting and coating pigment pf paper mill according to claim 1 is recycled technology, it is characterized in that: the turbine centrifugation step, be intended to dewater and be rich in the mud solid content (to 25～30%) of pigment with raising.
7. painting and coating pigment pf paper mill according to claim 1 is recycled technology, it is characterized in that: vertical sand milling step, be intended to make pigment (lime carbonate is main) particle expansion meticulous.
8. recycle technology according to claim 1 or 7 described painting and coating pigment pf paper mills, it is characterized in that: in the vertical sand milling step, reclaiming pigment and technical grade lime carbonate (400 order) is used, proportioning can be 5～30%, milling time 25～40min, slurries particle diameter≤2 μ m% are about 65%, slurry solid content about 75%, and the ISO whiteness can reach more than 90%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101191975A CN101367589A (en) | 2008-08-29 | 2008-08-29 | Reutilization process for painting and coating pigment pf paper mill |
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| CNA2008101191975A CN101367589A (en) | 2008-08-29 | 2008-08-29 | Reutilization process for painting and coating pigment pf paper mill |
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| CN101367589A true CN101367589A (en) | 2009-02-18 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870501A (en) * | 2010-07-07 | 2010-10-27 | 陶国来 | Method for processing dispersed dye coupling solution by utilizing ceramic membrane and corresponding system |
| CN102817278A (en) * | 2011-06-09 | 2012-12-12 | 金东纸业（江苏）股份有限公司 | Method for papermaking by coating wastewater |
| CN103742791A (en) * | 2013-12-20 | 2014-04-23 | 天津钢铁集团有限公司 | Converter steel-making sludge pipeline conveying system and method |
| CN104973741A (en) * | 2015-07-01 | 2015-10-14 | 新奥科技发展有限公司 | Sludge pretreatment method |
| CN105923802A (en) * | 2016-05-04 | 2016-09-07 | 玖龙纸业（太仓）有限公司 | Paint waste liquid and papermaking printing ink hybrid processing system and processing method |
| CN106758464A (en) * | 2016-12-08 | 2017-05-31 | 海南金海浆纸业有限公司 | A kind of Solid content recovery method of papermaking paint waste water |
| CN107445220A (en) * | 2017-08-22 | 2017-12-08 | 山东华泰纸业股份有限公司 | A kind of comprehensive utilization technique of art paper coating waste-water |
| CN110102006A (en) * | 2019-06-27 | 2019-08-09 | 江西圣辉生化科技有限公司 | A kind of extinguishing chemical and preparation method thereof |
| CN111055602A (en) * | 2019-12-31 | 2020-04-24 | 安徽省粤隆印刷科技有限公司 | Environment-friendly printing process with low migration volume |
| EP4067314A4 (en) * | 2019-11-29 | 2023-10-04 | Sparen Consultoria Ltda Me | Process for recycling waste from the treatment plants of industries that produce pigments, dyes, anilines and colour enhancers, and use of the treated sludge, sediment or petry sludge |
-
2008
- 2008-08-29 CN CNA2008101191975A patent/CN101367589A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870501A (en) * | 2010-07-07 | 2010-10-27 | 陶国来 | Method for processing dispersed dye coupling solution by utilizing ceramic membrane and corresponding system |
| CN102817278A (en) * | 2011-06-09 | 2012-12-12 | 金东纸业（江苏）股份有限公司 | Method for papermaking by coating wastewater |
| CN102817278B (en) * | 2011-06-09 | 2014-12-24 | 金东纸业（江苏）股份有限公司 | Method for papermaking by coating wastewater |
| CN103742791A (en) * | 2013-12-20 | 2014-04-23 | 天津钢铁集团有限公司 | Converter steel-making sludge pipeline conveying system and method |
| CN104973741A (en) * | 2015-07-01 | 2015-10-14 | 新奥科技发展有限公司 | Sludge pretreatment method |
| CN105923802B (en) * | 2016-05-04 | 2019-02-26 | 玖龙纸业（太仓）有限公司 | A kind of coating waste liquid and papermaking ink hybrid processing system and processing method |
| CN105923802A (en) * | 2016-05-04 | 2016-09-07 | 玖龙纸业（太仓）有限公司 | Paint waste liquid and papermaking printing ink hybrid processing system and processing method |
| CN106758464A (en) * | 2016-12-08 | 2017-05-31 | 海南金海浆纸业有限公司 | A kind of Solid content recovery method of papermaking paint waste water |
| CN107445220A (en) * | 2017-08-22 | 2017-12-08 | 山东华泰纸业股份有限公司 | A kind of comprehensive utilization technique of art paper coating waste-water |
| CN107445220B (en) * | 2017-08-22 | 2020-10-02 | 山东华泰纸业股份有限公司 | Application of coated paper coating wastewater |
| CN110102006A (en) * | 2019-06-27 | 2019-08-09 | 江西圣辉生化科技有限公司 | A kind of extinguishing chemical and preparation method thereof |
| EP4067314A4 (en) * | 2019-11-29 | 2023-10-04 | Sparen Consultoria Ltda Me | Process for recycling waste from the treatment plants of industries that produce pigments, dyes, anilines and colour enhancers, and use of the treated sludge, sediment or petry sludge |
| CN111055602A (en) * | 2019-12-31 | 2020-04-24 | 安徽省粤隆印刷科技有限公司 | Environment-friendly printing process with low migration volume |
| CN111055602B (en) * | 2019-12-31 | 2021-09-10 | 安徽省粤隆印刷科技有限公司 | Environment-friendly printing process with low migration volume |
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Open date: 20090218 |