JP3363320B2 - Papermaking pulp sludge cement board and its manufacturing method - Google Patents

Papermaking pulp sludge cement board and its manufacturing method

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Publication number
JP3363320B2
JP3363320B2 JP21038896A JP21038896A JP3363320B2 JP 3363320 B2 JP3363320 B2 JP 3363320B2 JP 21038896 A JP21038896 A JP 21038896A JP 21038896 A JP21038896 A JP 21038896A JP 3363320 B2 JP3363320 B2 JP 3363320B2
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JP
Japan
Prior art keywords
pulp sludge
cement
papermaking pulp
papermaking
cement board
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.)
Expired - Fee Related
Application number
JP21038896A
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Japanese (ja)
Other versions
JPH1025151A (en
Inventor
元旦 舩木
英雄 玉野井
孝治 柳町
Original Assignee
元旦ビューティ工業株式会社
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Priority to JP21038896A priority Critical patent/JP3363320B2/en
Publication of JPH1025151A publication Critical patent/JPH1025151A/en
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/10—Accelerators; Activators
    • C04B2103/14—Hardening accelerators
    • 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
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、製紙工場の産業廃棄物
として焼却あるいは、埋立により廃棄処分されていたパ
ルプスラッジを再活用して得る建築物の内外装材用の製
紙パルプスラッジセメント板とその製造方法に関する。BACKGROUND OF THE INVENTION The present invention relates to a papermaking pulp sludge cement board for building interior and exterior materials obtained by reusing pulp sludge that has been discarded by incineration or landfill as industrial waste of a paper mill. The manufacturing method is related.

【０００２】[0002]

【従来技術】製紙パルプスラッジは製紙工場より多量に
排出され、現在、焼却、埋立により処理されているが、
近年は埋め立て地の確保が困難となりつつあり、その再
利用が希求されている。製紙パルプスラッジの再利用の
手段としては、焼却灰とセメントと混合してセメント板
の製造を試みたり、あるいは製紙パルプスラッジにセメ
ント、焼き明ばん、石膏等を添加したセメント板の製造
方法（特開昭５６−１３４５４７号公報参照）が提案さ
れている。特開昭５６−１３４５４７号公報は、パルプ
スラッジに多量の水を含浸した後、セメント、焼き明ば
ん、石膏等を添加し、湿式混合したものを成型固化する
ことによりセメント板を得る製造方法に関するものであ
る。得られたセメント板はパルプスラッジ含有率が１０
％以下と低い割合にもかかわらず、曲げ強さは１０〜１
３ｋｇ／ｃｍ２と、市販品の石膏ボードのそれよりも低
い値である。この提案は、多量の水分をパルプスラッジ
中に含浸させ、パルプスラッジ中の微細繊維とセメン
ト、焼明板、石膏との共結体を作り強度を得るものであ
るが、乾燥した固化体のパルプスラツジ微細繊維とセメ
ント、石膏との空隙が大きく、そのためパルプスラッジ
中の微細繊維とセメント、石膏との結合力が弱くなり、
高い強度を得ることができない。BACKGROUND OF THE INVENTION Papermaking pulp sludge is discharged in large quantities from a papermaking plant and is currently incinerated and landfilled.
In recent years, it has become difficult to secure landfills, and their reuse is demanded. As a means of reusing the papermaking pulp sludge, an attempt is made to produce a cement board by mixing it with incinerated ash and cement, or a method for producing a cement board by adding cement, baking alum, gypsum, etc. to the papermaking pulp sludge (special JP-A-56-134547) has been proposed. Japanese Patent Application Laid-Open No. 56-134547 relates to a production method for obtaining a cement plate by impregnating a large amount of water into pulp sludge, adding cement, alum, gypsum, etc., and wet-mixing the mixture to form and solidify it. It is a thing. The obtained cement board has a pulp sludge content of 10
The bending strength is 10 to 1 even though it is as low as 10% or less.
The value is 3 kg / cm 2 , which is lower than that of the commercially available gypsum board. In this proposal, a large amount of water is impregnated into the pulp sludge to form a composite of fine fibers in the pulp sludge with cement, a shining plate, and gypsum to obtain strength, but a dried solidified pulp sludge. The voids between the fine fibers and the cement or gypsum are large, so the binding force between the fine fibers in the pulp sludge and the cement or gypsum becomes weak,
High strength cannot be obtained.

【０００３】[0003]

【発明が解決しようとする課題】本発明は、建材用特殊
セメントボードとして高い曲げ強さと圧縮強さを有し、
寸法安定性、保釘性に優れ、かつ鋸切等の切削冶具にて
木材と同様に容易に切削加工のできるた製紙パルプスラ
ッジセメント板とその製造方法を提供するものである。The present invention has a high bending strength and compressive strength as a special cement board for building materials,
(EN) A paper pulp / pulp sludge cement board which has excellent dimensional stability and nailability and can be easily cut with a cutting jig such as a saw as with wood, and a method for producing the same.

【０００４】本発明では、従来法にみられるように製紙
パルプスラッジをわずか１０％程度セメントに添加する
ことにより極度に強度が低くなる理由が、混練方法の種
類以外に製紙パルプスラッジ中に含有される成分にある
のではないかと考え、その成分の検討をおこなった。そ
の結果、製紙パルプスラッジ中に含有される糖成分の分
析を実施したところ、製紙パルプスラッジそのままでは
遊離の単糖類は検出されなかったが、製紙パルプスラッ
ジの加水分解処理では、グルコース、ラムノース、ガラ
クトース、キシロース等、セメントの硬化を阻害する多
数の単糖が加水分解生成物中に含まれていることが判明
した。このような糖成分を含む製紙パルプスラッジを用
いて製紙パルプスラッジセメント板の固化を促進させう
るために、セメント硬化阻害作用の低減対策の試みを行
った。本発明者は、製紙パルプスラッジ中の成分が、セ
メント中のアルカリ成分により加水分解され、前述の加
水分解生成物としての単糖類が、セメント硬化阻害作用
を大きくしている原因の一つであると考え、鋭意検討を
重ねた結果、本発明を完成するに至った。In the present invention, the reason why the strength is extremely lowered by adding about 10% of papermaking pulp sludge to the cement as in the conventional method is that it is contained in the papermaking pulp sludge in addition to the type of kneading method. I thought that it might be contained in other ingredients, and examined the ingredients. As a result, when the sugar components contained in the papermaking pulp sludge were analyzed, free monosaccharides were not detected as they were in the papermaking pulp sludge, but in the hydrolysis treatment of the papermaking pulp sludge, glucose, rhamnose, galactose were used. It was found that a large number of monosaccharides that inhibit the hardening of cement, such as xylose, are contained in the hydrolysis product. In order to accelerate the solidification of the papermaking pulp sludge cement board by using the papermaking pulp sludge containing such a sugar component, an attempt was made to reduce the cement hardening inhibiting action. The present inventors have found that components in papermaking pulp sludge are hydrolyzed by alkali components in cement, and monosaccharides as the above-mentioned hydrolysis products are one of the causes for increasing cement hardening inhibiting action. As a result of intensive studies, the present invention has been completed.

【０００５】[0005]

【課題を解決するための手段】本発明は、製紙パルプス
ラッジを強化材として用いるセメント板にあって、製紙
パルプスラッジ中に予め微量石膏を含浸させ、セメント
を加えて半乾式混合し、その後加圧成型、乾燥固化する
ことにより建材用特殊セメントボードとして高い曲げ強
さと圧縮強さを有し、寸法安定性、保釘性に優れている
ことを特徴とする製紙パルプスラッジセメント板および
その製造方法である。さらには、製紙パルプスラッジに
予め半水石膏又は無水石膏を１５０ｇ／製紙パルプスラ
ッジ（水分５０％）１０００ｇを含浸させ、該含浸製紙
パルプスラッジに硬化剤としてのニガリ成分である塩化
マグネシウムを少量添加混合した後、セメントを加えて
半乾式混合し、その後加圧成型、乾燥固化することによ
り、高い曲げ強さと圧縮強さを有し、寸法安定性、保釘
性に優れていることを特徴とする製紙パルプスラッジセ
メント板およびその製造方法である。The present invention relates to a cement board which uses papermaking pulp sludge as a reinforcing material, wherein papermaking pulp sludge is impregnated with a small amount of gypsum in advance, cement is added and the mixture is semi-dry mixed, and then added. A papermaking pulp sludge cement board characterized by having high bending strength and compressive strength as a special cement board for building materials by pressure molding and drying and solidification, and excellent dimensional stability and nail retention, and a method for producing the same. Is. Furthermore, 150 g of hemihydrate gypsum or anhydrous gypsum was previously added to the papermaking pulp sludge / papermaking pulp sludge.
1000 g of water (50% water content) is impregnated, and a small amount of magnesium chloride, which is a bittern component as a curing agent, is added to the impregnated paper pulp sludge and mixed, and then cement is added to perform semi-dry mixing, followed by pressure molding and drying. It is a papermaking pulp sludge cement board characterized by having high flexural strength and compressive strength by being solidified, and excellent in dimensional stability and nail retention, and a method for producing the same.

【０００６】[0006]

【作用】製紙パルプスラッジ中には、アルカリ性で加水
分解することにより、セメント固化の阻害物質が生成さ
れるが、ニガリ成分である塩化マグネシウムを用いるこ
とにより、水和初期に阻害物質が製紙パルプスラッジの
微細繊維近傍にあるセメント粒子に吸着されるため、セ
メントペースト中に浸透する阻害物質の量が少なくな
り、セメントの硬化が促進される。[Function] In papermaking pulp sludge, an inhibitor of cement solidification is generated by alkaline hydrolysis, but by using magnesium chloride, which is a bittern component, the inhibitor of papermaking pulp sludge is generated at the initial stage of hydration. Since it is adsorbed by the cement particles in the vicinity of the fine fibers, the amount of the inhibitor that penetrates into the cement paste is reduced, and the hardening of the cement is promoted.

【０００７】さらに、水分を約５０％程度含有している
製紙パルプスラッジの微細繊維とセメント成分との接触
が不十分であると、製紙パルプスラッジの微細繊維とセ
メントの結合力が弱く、高い強度は得られない。この現
象を解消するためには、ペンジュラー、ファニキュラー
Ｉの半乾式混合状態でパルプスラッジ中の微細な繊維を
叩きつける様にして、含水微細繊維中の水分中にセメン
ト成分を溶け込ませることにより、製紙パルプスラッジ
繊維とセメント成分が最接近することが可能となり、両
者を効率的に結合させることができる。Further, if the contact between the fine fibers of the papermaking pulp sludge containing about 50% of water and the cement component is insufficient, the binding force between the fine fibers of the papermaking pulp sludge and the cement is weak and the strength is high. Can't get In order to eliminate this phenomenon, the fine fibers in the pulp sludge are struck in a semi-dry mixed state of Pendular and Funicular I, and the cement component is dissolved in the water content of the hydrated fine fibers to produce papermaking. The pulp sludge fiber and the cement component can be brought closest to each other, and the both can be efficiently combined.

【０００８】製紙パルプスラッジ中の含水微細繊維中に
予め石膏を添加し、含浸させておくことは、製紙パルプ
スラッジ中の微細繊維とセメント成分のなじみ性を向上
させ、含水微細繊維とセメント成分をより最接近させる
と共に、セメント硬化阻害物質を石膏粒子に吸着せし
め、塩化マグネシウムの効果と相まってセメントペース
ト中に浸透する阻害物質の量が非常に少なくなり、セメ
ントの硬化が促進される。加圧成型後の養生固化した時
には、パルプスラッジ微細繊維とセメントが固く結合し
合った製紙パルプスラッジセメント板となり、曲げ強さ
と圧縮強さが一層高く、併せて保釘性が極めて良くな
る。Preliminarily adding and impregnating gypsum to the water-containing fine fibers in the papermaking pulp sludge improves the compatibility of the water-containing fine fibers and the cement components in the papermaking pulp sludge and improves the water-containing fine fibers and the cement components. The cement hardening inhibitor is adsorbed to the gypsum particles while being brought closer to each other, and the amount of the inhibitor penetrating into the cement paste is very small in combination with the effect of magnesium chloride, so that the hardening of the cement is accelerated. When cured and solidified after pressure molding, it becomes a papermaking pulp sludge cement board in which pulp sludge fine fibers and cement are firmly bonded to each other, and bending strength and compressive strength are higher, and nail holding property is also extremely improved.

【０００９】本発明に於いては、製紙パルプスラッジ中
に含有され、アルカリ性領域で加水分解により生成され
る単糖類によるセメント固化阻害を軽減するため、ニガ
リ成分である塩化マグネシウムを添加してセメントの固
化促進を図った。さらには、製紙パルプスラッジ中に予
め石膏をなじませた含浸石膏パルプスラッジをベースに
することと併せて、ペンジュラー、ファニキュラーＩの
半乾式混合状態でパルプスラッジ中の微細な繊維を叩き
つける様にして、含水微細繊維中の水分中にセメント成
分を溶け込ませることにより、製紙パルプスラッジ繊維
とセメント成分が最接近することが可能となり、セメン
ト／パルプスラッジ（水分５０％含有）比を０．５以下
と低くしても高い曲げ強さと優れた保釘性を持った製紙
パルプスラッジセメント板の製造を可能にした。In the present invention, magnesium chloride, which is a bittern component, is added in order to reduce the cement solidification inhibition caused by the monosaccharide contained in the papermaking pulp sludge and produced by hydrolysis in the alkaline region. Aiming to promote solidification. Furthermore, in addition to using the impregnated gypsum pulp sludge preliminized with gypsum in the papermaking pulp sludge as a base, fine fibers in the pulp sludge are beaten in a semi-dry mixed state of Pendular and Funicular I. By dissolving the cement component in the water content of the water-containing fine fibers, it becomes possible for the pulp pulp sludge fiber and the cement component to come closest to each other, and the cement / pulp sludge (containing 50% water) ratio should be 0.5 or less. It enables the production of paper pulp / pulp sludge cement boards that have high bending strength and excellent nail retention even if they are lowered.

【００１０】本発明に用いた製紙パルプスラッジは２０
〜８００μｍ程度の長さの繊維質と５〜５０μｍ程度の
タルク等無機質の集合体であり、一般には４０〜６０
％、通常５０％程度の付着水を含有している。固形分は
有機質４５％、無機質として、アルミナ、炭酸カルシウ
ム、マグネシア、シリカ、酸化チタン等５５％程度から
成っている。製紙パルプスラッジは有機成分を多量に含
有しているために異臭がでたり、カビが発生しやすい。
これらの防除対策としては、一般的な炭素粉、化石珊瑚
粉、ゼオライト等の遠赤材料を添加したり、フェノール
樹脂、クロロキシレノール、ホルムアルデヒド等、防カ
ビ防臭剤を混練時に添加することができる。The papermaking pulp sludge used in the present invention is 20
It is an aggregate of fibrous material having a length of about 800 μm and inorganic material such as talc having a thickness of about 5 to 50 μm, and is generally 40 to 60.
%, Usually about 50% of the adhered water is contained. The solid content is 45% of organic matter and about 55% of inorganic matter such as alumina, calcium carbonate, magnesia, silica and titanium oxide. Since papermaking pulp sludge contains a large amount of organic components, it is likely to give off a strange odor or mold.
As a control measure for these, far-infrared materials such as general carbon powder, fossil coral powder, and zeolite can be added, and a fungicide and deodorant such as phenol resin, chloroxylenol, and formaldehyde can be added at the time of kneading.

【００１１】[0011]

【実施例】製紙パルプスラッジセメント板のセメント対
パルプスラッジ比（以下Ｃ／Ｐ比とする）は０．３〜
１．８、好ましくは０．５〜１．０、好適には０．７〜
０．８である。Ｃ／Ｐ比が高すぎると強度は得られるも
のの、保釘性が低下し割れやすい。Ｃ／Ｐ比が低いと強
度が低下する。Ｃ／Ｐ比が好適であると、高い曲げ強さ
と圧縮強さならびに優れた保釘性を得ることができる。
ニガリ成分は主として塩化マグネシウム、塩化カルシウ
ム、または塩化マグネシウムと塩化カルシウムの混合物
であるが、本発明では、塩化マグネシウムフレークを用
いた。塩化マグネシウムの対セメント添加量（以下Ｍｇ
／Ｃ比とする）は０．０５〜１０％、好ましくは３〜５
％である。添加量が多すぎると、製紙パルプスラッジ中
の水分が不足状態となり、微細繊維とセメント並びに石
膏とのなじみ性が劣る。また、少なすぎてもなじみ効果
はでない。[Example] Paper-making pulp sludge cement plate has a cement-to-pulp sludge ratio (hereinafter referred to as C / P ratio) of 0.3 to
1.8, preferably 0.5-1.0, suitably 0.7-
It is 0.8. If the C / P ratio is too high, the strength is obtained, but the nail-holding property is deteriorated and cracks easily. If the C / P ratio is low, the strength decreases. When the C / P ratio is suitable, high bending strength and compressive strength and excellent nail-holding property can be obtained.
The bittern component is mainly magnesium chloride, calcium chloride, or a mixture of magnesium chloride and calcium chloride, but magnesium chloride flakes were used in the present invention. Addition amount of magnesium chloride to cement (hereinafter Mg
/ C ratio) is 0.05 to 10%, preferably 3 to 5
%. If the amount added is too large, the water content in the papermaking pulp sludge becomes insufficient, and the compatibility with the fine fibers and the cement and gypsum becomes poor. Also, if the amount is too small, the familiar effect is not obtained.

【００１２】[0012]

【００１３】[0013]

【００１４】[0014]

【００１５】[0015]

【００１６】[0016]

【００１７】〔実施例１〕 製紙パルプスラッジ（水分５０％）１０００ｇ、に半水
石膏１５０ｇ添加し、実施例１のコンクリートミキサー
で１０分間混合し、含浸石膏パルプスラッジを作成。該
含浸石膏パルプスラッジ１０００ｇに、塩化マグネシウ
ム５０ｇを水３０ccに溶かした液を入れ、セメント１０
００ｇを添加した後、コンクリート用小型ミキサー（容
量３０Ｌ、２５rpm、８０mmφアルミナボール投入）を
用いて１０分間混合し、半乾式状態で混合物を取り出
し、金型に入れて圧力２０kg/cm 2 にて加圧成型した後、
型を外し２８日間養生乾燥した。得られた製紙パルプス
ラッジセメント板にて、かさ比重、曲げ試験、圧縮試験
を実施した。その結果、かさ比重１．３８、曲げ強さ８
０．９kgf/cm 2 、圧縮強さ４１０kgf/cm 2 を得た。[ Example 1] 150 g of hemihydrate gypsum was added to 1000 g of papermaking pulp sludge (water content: 50%) and mixed for 10 minutes with the concrete mixer of Example 1 to prepare an impregnated gypsum pulp sludge. To 1000 g of the impregnated gypsum pulp sludge, a solution prepared by dissolving 50 g of magnesium chloride in 30 cc of water was added, and cement 10
After adding 00g, a small mixer for concrete (volume
30 L, 25 rpm, 80 mmφ alumina ball)
Mix for 10 minutes and remove the mixture in a semi-dry state
Then, after putting in a mold and pressure molding at a pressure of 20 kg / cm 2 ,
The mold was removed and cured and dried for 28 days. A bulk specific gravity, a bending test, and a compression test were performed on the obtained papermaking pulp sludge cement plate. As a result, bulk specific gravity of 1.38, bending strength of 8
0.9 kgf / cm 2 and a compressive strength of 410 kgf / cm 2 were obtained.

【００１８】〔実施例２〕 製紙パルプスラッジ（水分５０％）１０００ｇ、に無水
石膏１５０ｇ添加し、実施例１のコンクリートミキサー
で１０分間混合し、含浸石膏パルプスラッジを作成。該
含浸石膏パルプスラッジ１０００ｇに、塩化マグネシウ
ム３２ｇを水５０ccに溶かした液を入れ、セメント６４
０ｇを添加した後、実施例１と同様の方法にて混合、加
圧成型した後、型を外し２８日間養生乾燥した。得られ
た製紙パルプスラッジセメント板にて、かさ比重、曲げ
試験、圧縮試験を実施した。その結果、かさ比重１．３
５、曲げ強さ７７．１kgf/cm 2 、圧縮強さ４０４kgf/cm 2
を得た。[ Example 2] 150 g of anhydrous gypsum was added to 1000 g of papermaking pulp sludge (water content: 50%) and mixed for 10 minutes with the concrete mixer of Example 1 to prepare an impregnated gypsum pulp sludge. A solution of 32 g of magnesium chloride in 50 cc of water was added to 1000 g of the impregnated gypsum pulp sludge, and cement 64
After adding 0 g, the mixture was mixed and pressure-molded in the same manner as in Example 1, the mold was removed, and the mixture was cured and dried for 28 days. A bulk specific gravity, a bending test, and a compression test were performed on the obtained papermaking pulp sludge cement plate. As a result, bulk specific gravity 1.3
5, bending strength 77.1 kgf / cm 2 , compressive strength 404 kgf / cm 2
Got

【００１９】[0019]

【発明の効果】【The invention's effect】

１）本発明は、製紙パルプスラッジ中に含まれるセメン
ト固化阻害物質による固化阻害作用を軽減し、セメント
／パルプ比を大幅に低下させても、曲げ強さ並びに圧縮
強さの高い製紙パルプスラッジセメント板の製造を可能
とした。この結果、セメント／パルプ比を大幅に下げ得
ることで、製紙工場から多量に排出されるパルプスラッ
ジの利用量の向上効果は顕著となる。 ２）また、本発明による製紙パルプスラッジセメント板
は保釘性に優れているため、釘打のできない従来の石膏
ボードやセメント板のように特殊な固定用の保持部品を
用いなくても、手軽に釘打固定ができる。 ３）釘打ができ、かつ曲げ強さ、圧縮強さが高く、木材
と同様に鋸切等による切削が容易であるため、家屋の外
壁パネルや内壁、天井、床等の建築材料として、広範囲
な部位に使用できる。 ４）さらに、製紙パルプスラッジセメント板はパルプス
ラッジ中の微細繊維を多量に含んでいるために、製紙パ
ルプスラッジセメント板同士または、木質系材料や紙と
のなじみが良く、木工用の接着剤による接着が容易であ
るとの長所を有している。 ５）そのため製紙パルプスラッジセメント板は、木質系
材料を利用した複合板を特殊な設備を要することなく容
易に形成することができる。 ６）また製紙パルプスラッジセメント板はセメントとの
なじみ性も良いため、直接セメント壁への接着貼り付け
が可能である。 ７）本発明による製紙パルプスラッジセメント板の製造
方法は、製紙パルプスラッジ中の水分を有効に活用する
半乾式法によるため、汚水の発生がなく、自然環境を損
なう恐れが無い。1) The present invention reduces the solidification-inhibiting effect of the cement solidification-inhibiting substance contained in papermaking pulp sludge, and even if the cement / pulp ratio is significantly reduced, the papermaking pulp sludge cement has high bending strength and compression strength. It enabled the production of plates. As a result, the cement / pulp ratio can be significantly reduced, and the effect of improving the utilization amount of pulp sludge discharged from a paper mill in a large amount becomes remarkable. 2) Further, since the papermaking pulp sludge cement board according to the present invention is excellent in nail-holding property, it is easy to use without using special holding parts for fixing such as conventional plasterboard and cement board which cannot be nailed. Can be nailed and fixed to. 3) It can be nailed, has high bending strength and compressive strength, and is easy to cut by sawing like wood, so it can be widely used as a building material for outer wall panels and inner walls of houses, ceilings, floors, etc. It can be used for various parts. 4) Furthermore, since the papermaking pulp sludge cement board contains a large amount of fine fibers in the pulp sludge, it is well compatible with the papermaking pulp sludge cement boards or with wood-based materials and paper, and is made with an adhesive for woodworking. It has the advantage that it is easy to bond. 5) Therefore, the papermaking pulp sludge cement board can easily form a composite board using a wood-based material without requiring special equipment. 6) Further, since the paper pulp pulp sludge cement plate has good compatibility with cement, it can be directly adhered and adhered to the cement wall. 7) Since the method for producing a papermaking pulp sludge cement plate according to the present invention is a semi-dry method for effectively utilizing the water content in the papermaking pulp sludge, no sewage is generated and there is no risk of damaging the natural environment.

───────────────────────────────────────────────────── フロントページの続き (72)発明者 柳町 孝治 静岡県志太郡大井川町利右衛門684−１ 元旦ビューティ工業株式会社 静岡工 場内 (56)参考文献 特開 昭47−30720（ＪＰ，Ａ) 特開 昭48−32122（ＪＰ，Ａ) 特開 昭47−29887（ＪＰ，Ａ) 特開 昭56−134547（ＪＰ，Ａ) 特開 平７−69701（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) C04B 32/02 C04B 18/24 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Koji Yanagimachi 684-1 Riemon, Oigawa-cho, Shita-gun, Shizuoka Prefecture New Year's Beauty Co., Ltd. Shizuoka Factory (56) Reference JP-A-47-30720 (JP, A) JP-A-48-32122 (JP, A) JP-A-47-29887 (JP, A) JP-A-56-134547 (JP, A) JP-A-7-69701 (JP, A) (58) Fields investigated (Int.Cl. 7 , DB name) C04B 32/02 C04B 18/24

Claims (6)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】 製紙パルプスラッジを強化材として用い
るセメント板にあって、製紙パルプスラッジ中に予め半
水石膏又は無水石膏を１５０ｇ／製紙パルプスラッジ
（水分５０％）１０００ｇを含浸させ、セメントを半乾
式混合して半乾式加圧成型固化して成ることを特徴とす
る製紙パルプスラッジセメント板。1. A cement board which uses papermaking pulp sludge as a reinforcing material, wherein the papermaking pulp sludge is preliminarily semi-finished.
150 g of water gypsum or anhydrous gypsum / papermaking pulp sludge
A papermaking pulp sludge cement board, which is obtained by impregnating 1000 g of (water content 50%) , semi-dry mixing the cement, and semi-dry pressure molding and solidifying. 【請求項２】 硬化剤としてのニガリ成分を添加するこ
とを特徴とする請求項１に記載の製紙パルプスラッジセ
メント板。 2. A bittern component as a curing agent may be added.
The papermaking pulp sludge separator according to claim 1, wherein
Ment board. 【請求項３】 防かび剤、防臭剤の少なくとも一方を混
合することを特徴とする請求項１または２に記載の製紙
パルプスラッジセメント板。 3. At least one of a fungicide and a deodorant is mixed.
The papermaking according to claim 1 or 2, characterized in that
Pulp sludge cement board. 【請求項４】 製紙パルプスラッジに予め半水石膏又は
無水石膏を１５０ｇ／製紙パルプスラッジ（水分５０
％）１０００ｇを含浸させる第１工程と、セメントを半
乾式混合する第２工程と、半乾式加圧成型固化する第３
工程から成ることを特徴とする製紙パルプスラッジセメ
ント板の製造方法。4. Hemihydrate gypsum or preliminarily added to papermaking pulp sludge
150 g anhydrous gypsum / papermaking pulp sludge (water content 50
%) The first step of impregnating 1000 g , the second step of semi-dry mixing of cement, and the third step of semi-dry pressure molding and solidification.
A method for producing a papermaking pulp sludge cement board, which comprises the steps of: 【請求項５】 製紙パルプスラッジにセメントを半乾式
混合する工程において、硬化剤としてのニガリ成分を添
加することを特徴とする請求項４に記載の製紙パルプス
ラッジセメント板の製造方法。 5. A semi-dry type of cement for papermaking pulp sludge.
In the mixing step, add bittern component as a curing agent.
5. The papermaking pulp according to claim 4, which is added.
Method for manufacturing a ludge cement board. 【請求項６】 第１工程において、製紙パルプスラッジ
に予め防かび剤、防臭剤の少なくとも一方を添加するこ
とを特徴とする請求項４または５に記載の製紙パルプス
ラッジセメント板の製造方法。 6. The papermaking pulp sludge in the first step
It is necessary to add at least one of antifungal agent and deodorant to
The papermaking pulp according to claim 4 or 5, characterized in that
Method for manufacturing a ludge cement board.
JP21038896A 1996-07-05 1996-07-05 Papermaking pulp sludge cement board and its manufacturing method Expired - Fee Related JP3363320B2 (en)

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Application Number Priority Date Filing Date Title
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JPH1025151A JPH1025151A (en) 1998-01-27
JP3363320B2 true JP3363320B2 (en) 2003-01-08

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1235329C (en) 1998-12-21 2006-01-04 精工爱普生株式会社 Piexoelectric actuator, time piece and portable device
JP2007176735A (en) * 2005-12-28 2007-07-12 Nittoc Constr Co Ltd Lightweight concrete
JP2008050192A (en) * 2006-08-23 2008-03-06 Nittoc Constr Co Ltd Cement composition and its manufacturing method

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