CN1773015A - Medium density board produced with paper-making sludge and producing method thereof - Google Patents
Medium density board produced with paper-making sludge and producing method thereof Download PDFInfo
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- CN1773015A CN1773015A CN 200510104235 CN200510104235A CN1773015A CN 1773015 A CN1773015 A CN 1773015A CN 200510104235 CN200510104235 CN 200510104235 CN 200510104235 A CN200510104235 A CN 200510104235A CN 1773015 A CN1773015 A CN 1773015A
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Abstract
The present invention relates to a medium density board produced by utilizing sludge of paper mill and its production method. Said invention uses the sludge of paper mill as raw material, and adopts the following steps: mechanical dewatering, forming to obtain wet medium density board whose water content is 60%-80%, pressing, drying, further dewatering, high-pressure forming and high-temperature drying so as to obtain the invented medium density board.
Description
Technical field
The present invention relates to a kind of medium-density plate and production method of utilizing paper mill sludge to produce.
Background technology
Medium-density plate becomes the favorite of ornament materials owing to its durable performance and aesthetic property, and its output is increasing.The medium-density plate that uses is generally produced with wood fibre at present, is subjected to the restriction of China's forest scarcity; On the other hand, reasonable processing for paper mill sludge is the important step of paper waste integrated treatment, usually there is 20%～30% waste material to enter the wastewater and waste materials treatment system in the paper making raw material, suspended matter in these waste water has 90%～98% to separate from waste water and become paper mill sludge, and main component is the biocolloid of fiber fines, talcum powder, paper making additive and sewage disposal.At present, the processing method of paper mill sludge is buried after doing for the employing sludge dewatering equipment takes off, and the disposal cost height is wasted land resource and easily produced secondary pollution.
Summary of the invention
The object of the invention provides a kind of medium-density plate and production method of utilizing paper mill sludge to produce.
For achieving the above object, the technical solution used in the present invention is: be raw material with the paper mill sludge, through mechanical dehydration, moulding and to be combined into moisture content be 60%～80% wet medium-density plate, then wet medium-density plate is put into that the squeezing dryer further dewaters, high pressure typing, hyperthermia drying and make the medium-density plate finished product.
Simultaneously, the present invention also provides a kind of method of utilizing paper mill sludge to produce medium-density plate: with the paper mill sludge is raw material, through mechanical dehydration, moulding and to be combined into moisture content be 60%～80% wet medium-density plate, then the medium-density plate that wets is put into the squeezing dryer, high pressure is finalized the design under further dehydration of process, the pressure at 0.3MPa～0.6MPa in the squeezing dryer, hyperthermia drying made finished product after 20～30 minutes under 160 ℃～180 ℃ temperature.
The present invention utilizes paper mill sludge to produce medium-density plate for raw material, has thoroughly solved paper mill sludge secondary pollution problem, makes the paper mill sludge recycling, realizes zero-emission, has saved land resource; Saved raw material resources in a large number, 98% is the mud and the useless slurry in paper mill in the raw material, and production cost is low, and operating procedure is simple; In process of production, medium-density plate is at first dried in the high pressure dehydration conditions, saves a large amount of heat energy; Medium-density plate, removes the peculiar smell in the medium-density plate through high pressure typing and hyperthermia drying in production process, and harmful microorganism kills; Medium-density plate can not produce harmful pollutants in use; String in the medium-density plate raw material, talcum powder and non-harmful paper making additive under nature, can effectively be decomposed by biological, can not produce secondary pollution.
The specific embodiment
The invention will be further described below in conjunction with specific embodiment.
The objective of the invention is to solve the difficult problem of paper mill sludge comprehensive development and utilization, refuse is changed into product, solve the paper mill sludge processing and only drop into the not contradiction of output, to obtain favorable economic benefit and social benefit.Properties of product of the present invention reach wood pulp or straw pulp medium-density plate performance in the market, have substitutingly, can make all kinds of chemical assistants, packing case interior lining panel, clothes-type package box, handicraft packing box, ceramic packing case, decorate inner panel etc.
The present invention is that the production principle of taking that achieves the above object is: 1, the useless screenings that produced in papermaking and the pulping system and sewage disposal system mesophytization and materialized mud are collected mud and regulate modified pond, performance according to mud adds an amount of string to strengthen the mechanical performance of medium-density plate, add retention and drainage aid agent to increase the dewatering of mud, retention and drainage aid agent can be selected starch and aluminum sulfate for use; 2, modified mud is carried out mechanical dehydration, moulding and to be combined into moisture content be 70% medium-density plate; 3, wet medium-density plate is put into the squeezing dryer, mud is further dewatered, high pressure typing, hyperthermia drying sterilization; 4, the packing of cutting edge of the medium-density plate after will drying.
Medium-density plate of the present invention, with the paper mill sludge is raw material, through mechanical dehydration, moulding and to be combined into moisture content be 60%～80% wet medium-density plate, then wet medium-density plate is put into that the squeezing dryer further dewaters, high pressure typing, hyperthermia drying and make the medium-density plate finished product.
Method of the present invention is: be raw material with the paper mill sludge, through mechanical dehydration, moulding and to be combined into moisture content be 60%～80% wet medium-density plate, then the medium-density plate that wets is put into the squeezing dryer, high pressure is finalized the design under further dehydration of process, the pressure at 0.3MPa～0.6MPa in the squeezing dryer, hyperthermia drying made finished product after 20～30 minutes under 160 ℃～180 ℃ temperature.
Embodiment 1
The present invention is raw material with the paper mill sludge, through mechanical dehydration, moulding and to be combined into moisture content be 70% wet medium-density plate, then wet medium-density plate is put into the squeezing dryer, in the squeezing dryer through high pressure typing under further dehydration, the pressure at 0.4MPa, under 170 ℃ temperature hyperthermia drying 30 minutes and make the medium-density plate finished product.As required, the thickness of medium-density plate finished product can be made into 1.2mm～3mm.
Embodiment 2
The present invention is raw material with the paper mill sludge, adding the string that accounts for paper mill sludge oven dry weight 2% earlier in the paper mill sludge raw material in addition carries out modified, to strengthen the mechanical performance of medium-density plate, then through mechanical dehydration, moulding and to be combined into moisture content be 70% wet medium-density plate, then wet medium-density plate is put into the squeezing dryer, in the squeezing dryer through high pressure typing under further dehydration, the pressure at 0.4MPa, under 170 ℃ temperature hyperthermia drying 30 minutes and make the medium-density plate finished product.
Embodiment 3
The present invention is raw material with the paper mill sludge, adding the string that accounts for paper mill sludge oven dry weight 2% earlier in the paper mill sludge raw material in addition carries out modified, to strengthen the mechanical performance of medium-density plate, add starch that accounts for paper mill sludge oven dry weight 1 ‰ and the aluminum sulfate that accounts for paper mill sludge oven dry weight 3 ‰ in addition, to strengthen the dewatering of paper mill sludge.The purpose that adds aluminum sulfate is to regulate the pH value and the dewatering of mud, and pH value is adjusted to 6～9, helps environmental protection.Then, through mechanical dehydration, moulding and to be combined into moisture content be 70% wet medium-density plate, then wet medium-density plate is put into the squeezing dryer, in the squeezing dryer through high pressure typing under further dehydration, the pressure at 0.4MPa, under 170 ℃ temperature hyperthermia drying 30 minutes and make the medium-density plate finished product.
Embodiment 4
The present invention is raw material with the paper mill sludge, adding the string that accounts for paper mill sludge oven dry weight 2% earlier in the paper mill sludge raw material in addition carries out modified, to strengthen the mechanical performance of medium-density plate, add starch that accounts for paper mill sludge oven dry weight 10 ‰ and the aluminum sulfate that accounts for paper mill sludge oven dry weight 10 ‰ in addition, to strengthen the dewatering of paper mill sludge.Then, through mechanical dehydration, moulding and to be combined into moisture content be 70% wet medium-density plate, then wet medium-density plate is put into the squeezing dryer, in the squeezing dryer through high pressure typing under further dehydration, the pressure at 0.4MPa, under 170 ℃ temperature hyperthermia drying 30 minutes and make the medium-density plate finished product.
Embodiment 5
The present invention is raw material with the paper mill sludge, adding the string that accounts for paper mill sludge oven dry weight 2% earlier in the paper mill sludge raw material in addition carries out modified, to strengthen the mechanical performance of medium-density plate, add starch that accounts for paper mill sludge oven dry weight 2 ‰ and the aluminum sulfate that accounts for paper mill sludge oven dry weight 6 ‰ in addition, to strengthen the dewatering of paper mill sludge.Then, through mechanical dehydration, moulding and to be combined into moisture content be 70% wet medium-density plate, then wet medium-density plate is put into the squeezing dryer, in the squeezing dryer through high pressure typing under further dehydration, the pressure at 0.4MPa, under 170 ℃ temperature hyperthermia drying 30 minutes and make the medium-density plate finished product.
Claims (10)
1, a kind of medium-density plate that utilizes paper mill sludge to produce, it is characterized in that: be raw material with the paper mill sludge, through mechanical dehydration, moulding and to be combined into moisture content be 60%～80% wet medium-density plate, then wet medium-density plate is put into that the squeezing dryer further dewaters, high pressure typing, hyperthermia drying and make the medium-density plate finished product.
2, a kind of medium-density plate that utilizes paper mill sludge to produce according to claim 1 is characterized in that: add the string that accounts for paper mill sludge oven dry weight 2%～10% in described paper mill sludge raw material in addition.
3, a kind of medium-density plate that utilizes paper mill sludge to produce according to claim 1 is characterized in that: add starch that accounts for paper mill sludge oven dry weight 1 ‰～10 ‰ and the aluminum sulfate that accounts for paper mill sludge oven dry weight 3 ‰～10 ‰ in described paper mill sludge raw material in addition.
4, a kind of medium-density plate that utilizes paper mill sludge to produce according to claim 2 is characterized in that: add starch that accounts for paper mill sludge oven dry weight 1 ‰～10 ‰ and the aluminum sulfate that accounts for paper mill sludge oven dry weight 3 ‰～10 ‰ in described paper mill sludge raw material and plant fiber material in addition.
5, according to claim 3 or 4 described a kind of medium-density plates that utilize paper mill sludge to produce, it is characterized in that: described starch accounts for paper mill sludge oven dry weight 2 ‰ and described aluminum sulfate accounts for paper mill sludge oven dry weight 6 ‰.
6, a kind of method of utilizing paper mill sludge to produce medium-density plate, it is characterized in that: be raw material with the paper mill sludge, through mechanical dehydration, moulding and to be combined into moisture content be 60%～80% wet medium-density plate, then the medium-density plate that wets is put into the squeezing dryer, high pressure is finalized the design under further dehydration of process, the pressure at 0.3MPa～0.6MPa in the squeezing dryer, hyperthermia drying made finished product after 20～30 minutes under 160 ℃～180 ℃ temperature.
7, a kind of method of utilizing paper mill sludge to produce medium-density plate according to claim 6 is characterized in that: add the string that accounts for paper mill sludge oven dry weight 2%～10% in described paper mill sludge raw material in addition.
8, a kind of method of utilizing paper mill sludge to produce medium-density plate according to claim 6 is characterized in that: add starch that accounts for paper mill sludge oven dry weight 1 ‰～10 ‰ and the aluminum sulfate that accounts for paper mill sludge oven dry weight 3 ‰～10 ‰ in described paper mill sludge raw material in addition.
9, a kind of method of utilizing paper mill sludge to produce medium-density plate according to claim 7 is characterized in that: add starch that accounts for paper mill sludge oven dry weight 1 ‰～10 ‰ and the aluminum sulfate that accounts for paper mill sludge oven dry weight 3 ‰～10 ‰ in described paper mill sludge raw material and plant fiber material in addition.
10, according to Claim 8 or 9 described a kind of medium-density plates that utilize paper mill sludge to produce, it is characterized in that: described starch accounts for paper mill sludge oven dry weight 2 ‰ and described aluminum sulfate accounts for paper mill sludge oven dry weight 6 ‰.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101042356A CN100368630C (en) | 2005-10-12 | 2005-10-12 | Medium density board produced with paper-making sludge and producing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101042356A CN100368630C (en) | 2005-10-12 | 2005-10-12 | Medium density board produced with paper-making sludge and producing method thereof |
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| Publication Number | Publication Date |
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| CN1773015A true CN1773015A (en) | 2006-05-17 |
| CN100368630C CN100368630C (en) | 2008-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005101042356A Expired - Fee Related CN100368630C (en) | 2005-10-12 | 2005-10-12 | Medium density board produced with paper-making sludge and producing method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008019507A1 (en) * | 2006-08-18 | 2008-02-21 | Uniboard Canada, Inc. | Fiberboards, uses and methods of preparation thereof |
| WO2011073851A1 (en) * | 2009-12-16 | 2011-06-23 | Universidad Tecnologica De Pereira | Process for the manufacture of construction materials from cellulosic residues |
| CN102108647A (en) * | 2010-12-20 | 2011-06-29 | 莫少莲 | Process for producing paper pulp, compressed paperboard prepared with paper pulp and application of paperboard |
| CN102493287A (en) * | 2011-12-08 | 2012-06-13 | 南京博方生物科技有限公司 | Method for producing plate by fiber-containing sludge and application thereof |
| CN106517876A (en) * | 2016-10-25 | 2017-03-22 | 郑州宇冶环保科技有限公司 | Environment-friendly composite pug prepared from waste paper sludge, and preparation method thereof |
| CN106927654A (en) * | 2015-12-29 | 2017-07-07 | 浙江鑫丰特种纸业股份有限公司 | A kind of paper mill sludge resource utilization system and its method |
| CN107498659A (en) * | 2017-09-30 | 2017-12-22 | 徐州雅来基桑拿设备有限公司 | A kind of stable anti-flaming density plate |
| CN107815929A (en) * | 2017-11-02 | 2018-03-20 | 江南大学 | A kind of sludge paper and preparation method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4510019A (en) * | 1981-05-12 | 1985-04-09 | Papeteries De Jeand'heurs | Latex containing papers |
| CA2353880A1 (en) * | 1998-12-11 | 2000-06-22 | Toshihiro Nomura | Composite hardened body and production method thereof as well as plate-shaped building materials using such a composite hardened body |
| US6572736B2 (en) * | 2000-10-10 | 2003-06-03 | Atlas Roofing Corporation | Non-woven web made with untreated clarifier sludge |
| CN1575946A (en) * | 2003-07-29 | 2005-02-09 | 翟耀民 | Synthetic fibre board and producing method thereof |
-
2005
- 2005-10-12 CN CNB2005101042356A patent/CN100368630C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008019507A1 (en) * | 2006-08-18 | 2008-02-21 | Uniboard Canada, Inc. | Fiberboards, uses and methods of preparation thereof |
| WO2011073851A1 (en) * | 2009-12-16 | 2011-06-23 | Universidad Tecnologica De Pereira | Process for the manufacture of construction materials from cellulosic residues |
| CN102108647A (en) * | 2010-12-20 | 2011-06-29 | 莫少莲 | Process for producing paper pulp, compressed paperboard prepared with paper pulp and application of paperboard |
| CN102108647B (en) * | 2010-12-20 | 2012-09-05 | 莫少莲 | Process for producing paper pulp, compressed paperboard prepared with paper pulp and application of paperboard |
| CN102493287A (en) * | 2011-12-08 | 2012-06-13 | 南京博方生物科技有限公司 | Method for producing plate by fiber-containing sludge and application thereof |
| CN106927654A (en) * | 2015-12-29 | 2017-07-07 | 浙江鑫丰特种纸业股份有限公司 | A kind of paper mill sludge resource utilization system and its method |
| CN106517876A (en) * | 2016-10-25 | 2017-03-22 | 郑州宇冶环保科技有限公司 | Environment-friendly composite pug prepared from waste paper sludge, and preparation method thereof |
| CN107498659A (en) * | 2017-09-30 | 2017-12-22 | 徐州雅来基桑拿设备有限公司 | A kind of stable anti-flaming density plate |
| CN107815929A (en) * | 2017-11-02 | 2018-03-20 | 江南大学 | A kind of sludge paper and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100368630C (en) | 2008-02-13 |
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Granted publication date: 20080213 Termination date: 20091112 |