JPH0259479A - Method for lightening fly-ash formed material - Google Patents
Method for lightening fly-ash formed materialInfo
- Publication number
- JPH0259479A JPH0259479A JP20793588A JP20793588A JPH0259479A JP H0259479 A JPH0259479 A JP H0259479A JP 20793588 A JP20793588 A JP 20793588A JP 20793588 A JP20793588 A JP 20793588A JP H0259479 A JPH0259479 A JP H0259479A
- Authority
- JP
- Japan
- Prior art keywords
- fly ash
- kneading
- added
- ash
- amt
- 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
- 239000000463 material Substances 0.000 title claims abstract description 34
- 239000010881 fly ash Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims description 13
- 238000004898 kneading Methods 0.000 claims abstract description 16
- 239000011230 binding agent Substances 0.000 claims abstract description 14
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 12
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims abstract description 6
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 4
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 4
- 235000011116 calcium hydroxide Nutrition 0.000 claims abstract description 4
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 4
- 238000010304 firing Methods 0.000 claims description 13
- 239000004088 foaming agent Substances 0.000 claims description 11
- 238000005187 foaming Methods 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 239000012778 molding material Substances 0.000 claims description 8
- 239000006260 foam Substances 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 5
- 239000011521 glass Substances 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 11
- 230000035699 permeability Effects 0.000 abstract description 9
- 229920000609 methyl cellulose Polymers 0.000 abstract description 3
- 239000001923 methylcellulose Substances 0.000 abstract description 3
- 239000004566 building material Substances 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract description 2
- 238000001354 calcination Methods 0.000 abstract 1
- 230000005484 gravity Effects 0.000 description 12
- 239000002956 ash Substances 0.000 description 8
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 6
- 229910021536 Zeolite Inorganic materials 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 239000010457 zeolite Substances 0.000 description 5
- 239000004604 Blowing Agent Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000010883 coal ash Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000009408 flooring Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 235000010981 methylcellulose Nutrition 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 239000007900 aqueous suspension Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000007580 dry-mixing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000007750 plasma spraying Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
この発明はフライアッシュ成形材の軽量化方法に関する
。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method for reducing the weight of a fly ash molded material.
〈発明の背乏〉
国内の石炭灰発生量は近時の石炭利用の拡大に件って増
大しているが、発生した石炭灰は産業廃棄物としてコス
トを掛けた埋立て処分が主体となっており、−ｆｆｌｓ
はセメント原料、セメント混和材、コンクリート骨材、
道路路盤材等に、その外窯業製品への応用研究としては
、瓦、レンガ、タイル等の主原料である粘土中に一部代
替品として添加する例がある。いずれにしてもフライア
ッシュの有効利用率は全体の３０％前後と推定されてお
り、その有効利用の拡大は石炭利用産業界で強（望まれ
ている。<Lack of invention> The amount of coal ash generated in Japan has increased due to the recent expansion of coal use, but the generated coal ash is mainly disposed of as industrial waste in expensive landfills. -ffls
are cement raw materials, cement admixtures, concrete aggregates,
As for application research to road base materials and other ceramic products, there is an example of adding it as a partial substitute to clay, which is the main raw material for roof tiles, bricks, tiles, etc. In any case, the effective utilization rate of fly ash is estimated to be around 30% of the total, and expansion of its effective utilization is strongly desired by the coal-using industry.
特にフライアッシュの窯業製品への利用は製造工程の複
雑化、設備増加等によりコスト高となる上に製品の品質
低下をもたらすという欠点があり、粘土を主体とする材
料の中で３５％前後の混合比率が限界であった。In particular, the use of fly ash for ceramic products has the drawback of complicating the manufacturing process, increasing equipment, etc., resulting in higher costs and lowering the quality of the product. The mixing ratio was at its limit.
く従来の技術〉
これに対し本発明者は他の発明者と共同して重量比で９
９％のフライアッシュを利用した多孔質の成形焼成材を
製造する方法を、特願昭６２−３０７９９号の明細書及
び図面に示される発明として先に提案している。Prior art> In contrast, the present inventor, in collaboration with other inventors,
A method for producing porous molded and fired materials using 9% fly ash was previously proposed as an invention shown in the specification and drawings of Japanese Patent Application No. 1983-30799.
上記発明は石炭灰のうちのフライアッシュを主原料とし
、成形性を高めるためのバインダーを選択し、低温焼成
することによって、７ライアンシユのバルーンとしての
特徴を生かした新規素材を得るしので、フライアッシュ
（重量比９９％）と少量の有機性のバインダー（メチル
セルローズ）に適量の練［１（重量比的５０％の水）を
加えて混練したものを所定の形に成形し、該成形物を焼
成（焼成温度１１００℃〜１１４５℃）することにより
多孔質成形材を製造する方法である。The above invention uses fly ash from coal ash as the main raw material, selects a binder to improve moldability, and performs low-temperature firing to obtain a new material that takes advantage of the characteristics of a 7-line balloon. Ash (99% by weight) and a small amount of organic binder (methyl cellulose) are mixed with an appropriate amount of kneading [1 (50% by weight water), and the mixture is molded into a predetermined shape, and the molded product is This is a method for producing a porous molded material by firing (firing temperature: 1100°C to 1145°C).
〈発明が解決しようとする課題〉
上記多孔質成形材は、プライアッシュの有効利用を図れ
る点、通気性、透水性を有する軽量な低コストの焼成材
が得られる点、しかも均一で高い寸法精のものが得られ
る点等において画期的なものであるが、かさ比重が１．
０４以上あり、例えば建築物の天井材や壁材として用い
るには接着強度を相当高くする必要があり、接着による
固定方法では落下の危険を伴う場合もあるほか、これら
の作業に伴う搬送や取扱い時の困難さや危険及び加工性
の不十分さが残されていた。<Problems to be Solved by the Invention> The porous molded material described above has the advantages of making effective use of ply ash, producing a lightweight, low-cost fired material with air permeability and water permeability, and having uniform and high dimensional precision. Although it is revolutionary in that it can obtain a product with a bulk specific gravity of 1.
04 or higher, and for example, to use it as a ceiling material or wall material in a building, it is necessary to have a considerably high adhesive strength.Fixing with adhesive may involve the risk of falling, and the transportation and handling involved in these operations However, there remained difficulties and dangers at the time, as well as insufficient workability.
また上記比重の高さは気孔率の低さでもあり、比重が高
い程通気性、透水性、断熱性等の性質も劣るため、これ
らの目的で使用するにはさらに低比重のものが求められ
ている。In addition, the high specific gravity mentioned above also indicates low porosity, and the higher the specific gravity, the poorer the properties such as air permeability, water permeability, and heat insulation, so a material with an even lower specific gravity is required to be used for these purposes. ing.
一方上記気孔率を高くして低比重化すると、表面の耐摩
耗性の低下を伴うため、耐摩耗性が要求されるタイルや
床材用棟瓦等への使用に難点がある。On the other hand, when the porosity is increased to lower the specific gravity, the abrasion resistance of the surface is lowered, so it is difficult to use it for tiles, floor tiles, etc. that require abrasion resistance.
く課題を解決するための手段〉
上記のような課題を解決しようとする本発明の方法は、
プライアッシュと少量の有機性のバインダーに適量の練
製液を加えて混練したものを所定の形に成形し、該成形
物を焼成することにより多孔質成形材を製造する７ライ
ア７シユ成形材の製造方法において、上記混線に際して
反応して発泡する少量の発泡剤を添加するもので、上記
発泡剤として過酸化水素水を用い、さらに発泡補助剤と
して消石灰又は硫酸カルシウムを加えることを特徴とし
ている。Means for Solving the Problems> The method of the present invention that attempts to solve the above problems is as follows:
A porous molding material is produced by adding an appropriate amount of kneading liquid to ply ash and a small amount of an organic binder, molding it into a predetermined shape, and firing the molded material to produce a porous molding material. In the manufacturing method, a small amount of a foaming agent is added which reacts and foams during the above-mentioned crosstalk, and is characterized by using hydrogen peroxide as the foaming agent, and further adding slaked lime or calcium sulfate as a foaming aid. .
また、上記混練に際して発泡する少量の発泡剤を添加す
るとともに、成形材の焼成の前又は後において表面にガ
ラス質、セラミック質、金属質等による耐摩耗処理を施
すことを他の特徴としている。Another feature is that a small amount of a foaming agent that foams during the kneading is added, and the surface of the molded material is subjected to wear-resistant treatment with glass, ceramic, metal, etc. before or after firing.
く作用〉
バルーン状の中空粒や未燃カーボンを含むプライアッシ
ュは有機性バインダー、発泡剤及び練製液と混練される
ことにより数分間で発泡剤及び発泡補助剤が反応し、成
形可能な粘性を与えられ、成形品を徐々に過熱すると先
ずバインダーが、次に未燃カーボンが順次酸化焼失しフ
ライアッシュの主成分が最後に燃結し、上記焼失部分は
微小な中空となって多孔質の焼結晶が得られる。上記過
程でバインダー焼失と発泡剤の発泡によってで外だ中空
部は次の未燃カーボンの酸化を助長するものと推定され
る。その結果連続気孔性の多孔質゛焼成材が得られ、表
面硬化を施したものでは表面の耐摩耗性が向上する。Action〉 Ply ash containing balloon-shaped hollow particles and unburned carbon is kneaded with an organic binder, blowing agent, and kneading liquid, and the blowing agent and blowing aid react in a few minutes, creating a moldable viscosity. When the molded product is gradually heated, first the binder is oxidized and then the unburned carbon is oxidized and burned out, and the main component of the fly ash is finally combusted, and the burned part becomes a minute hollow and becomes a porous Burnt crystals are obtained. It is presumed that in the above process, the binder burns out and the blowing agent foams, leaving the hollow space outside to promote the subsequent oxidation of unburned carbon. As a result, a porous sintered material with continuous pores is obtained, and when surface hardened, the wear resistance of the surface is improved.
く実施例〉
以下に述べる本発明のフライアッシュ成形方法による試
作例はいずれも下記の共通条件のもとで行われ、異なる
部分についてのみ各試作例の説明の項で説明する。Examples> All of the trial production examples according to the fly ash molding method of the present invention described below were carried out under the following common conditions, and only the different parts will be explained in the section explaining each trial production example.
Ａ、試験体に使用した材料
フライアッシューーーー中国電力（株）火力発電所から
採取した７ライアツシ：Ｌ。A. Materials used for the test specimen Fly ash: 7 liters collected from the Chugoku Electric Power Co., Ltd. thermal power plant: L.
原料炭はオーストラリア産
のものを主体とした混合炭
パインダーーーーーメチルセルロース４０００ＣＰＳ練
ｇｌ 液−−−一水
成形品の成形方法−−−−ｉｏｘ ２０Ｘ ６（ｃｚ’
）Ｂ、試験体の製造工程
試料（フライアッシュ）にバインダーを所定重量外割り
で、また固体発泡剤、発泡補助剤又は強度補助剤等を加
える場合はこの他にこれらの固体剤を、さらにゼオライ
ト粒子を添加する場合も同様に添加し、乾式混合する。Coking coal is mainly from Australia Mixed charcoal binder - Methyl cellulose 4000CPS kneading solution - Molding method for mono-water molded products - IOX 20X 6 (cz')
) B. Manufacturing process of test specimen Add a binder to the sample (fly ash) by a predetermined weight, and if solid foaming agents, foaming aids, strength aids, etc. are added, add these solid agents, and add zeolite. When adding particles, they are added in the same manner and dry mixed.
この場合フライアッシュとバインダーの重量比率を９９
：１の割りで混合し、その他のものの重量比は以下プラ
イアッシュに対する重量比で示す。In this case, the weight ratio of fly ash and binder is 99.
The weight ratio of other materials is shown below as a weight ratio to ply ash.
上記乾式混合後練製液としてプライアッシュに対して重
量比的３０％の水を加えて攪拌混合するが、液状発泡剤
等は二の混練に際して予め水に、又は混線と並行して添
加する。発泡剤は混線の過程から混線後にかけてフライ
アッシュと水の懸濁液又は発泡補助剤と反応して発泡し
、混練後数十秒で発泡を完了する。After the above-mentioned dry mixing, 30% water by weight is added to the ply ash as a kneading liquid and mixed with stirring, but liquid blowing agents and the like are added to the water in advance during the second kneading or in parallel with the mixing. The foaming agent reacts with the suspension of fly ash and water or the foaming aid during the mixing process and after the mixing, and foams, and the foaming is completed several tens of seconds after mixing.
上記発泡後金型により試験体を押型成形し、その脱型後
自然乾燥を経てさらに約１１０℃で２時間以上強制通風
乾燥を行う。焼成は電気炉により酸化雰囲気で徐々に過
熱し、最終温度１１５０℃で行い数時間榎焼結を完了す
る。この開にバインダーや不燃カーボンの焼失が行われ
、焼結完了後冷却して必要に応じて寸法加工等を行う。After the foaming, the test specimen is press-molded using the mold, and after removal from the mold, it is naturally dried, and then forced air drying is performed at about 110° C. for 2 hours or more. Firing is performed by gradually heating in an oxidizing atmosphere in an electric furnace to a final temperature of 1150° C. for several hours to complete Enoki sintering. At this time, the binder and non-combustible carbon are burned out, and after sintering is completed, it is cooled and dimensional processing is performed as necessary.
Ｃ０試作実験の方法と結果
試作例■：発泡剤として重量比１％（討フライアッシュ
）の過酸化水素水（３５％水溶液）を添加したものでは
比重０．５、圧縮強度１ ｋｇ／ｃｍ２であった。この
例では過酸化水素水はプライアッシュと水の懸濁液と反
応して発泡する。C0 Prototype Experiment Method and Results Prototype Example ■: The one to which hydrogen peroxide (35% aqueous solution) with a weight ratio of 1% (reduced fly ash) was added as a foaming agent had a specific gravity of 0.5 and a compressive strength of 1 kg/cm2. there were. In this example, the hydrogen peroxide solution reacts with the ply ash and water suspension to form foam.
試作例■：上記過酸化水素水の他に過酸化水素と反応し
て発泡作用を促し発泡状態を保持する発泡補助剤として
過はう酸ナトリウム（工業用のＮａＢＯ＊・４！１□０
）を約１〜２％添加した例では、比重０．５５、圧縮強
度８−１０ｋｇ／ａｘ”のものと、比重０．６５、圧縮
強度１４ｋｇ／ｅｘ’のものと二通りの結果が出た。こ
れらの違いは外気温度やプライアッシュ自体の水分量の
違い等に起因するものと推測される。Prototype example ■: In addition to the above hydrogen peroxide solution, sodium perphosphate (industrial NaBO* 4!1□0
), two types of results were obtained: one with a specific gravity of 0.55 and a compressive strength of 8-10 kg/ex' and one with a specific gravity of 0.65 and a compressive strength of 14 kg/ex'. It is presumed that these differences are due to differences in outside temperature and moisture content of the ply ash itself.
試作例■：発泡剤として前記同様の過酸化水素水１％、
発泡補助剤として消石灰（Ｃｍ（Ｏｆｌ）ｚ）１〜２％
を加えたものは比＠０．６、圧縮強度１２ｋｇ／ｃｍ３
であった。Prototype example■: 1% hydrogen peroxide solution as above as a foaming agent,
Slaked lime (Cm(Ofl)z) 1-2% as a foaming aid
The ratio is @0.6 and the compressive strength is 12kg/cm3.
Met.
試作例■：発泡剤として過酸化水素水（Ｈ２０□、３５
％水溶ａ）１％、発泡補助剤としてａｍカルシウム（工
業用Ｃａ５Ｏ，・２８２０） １−１０％、強度補助剤
として過はう酸ナトリウム（工業用ＮａＤＯ，・４Ｈ２
０） １〜２％を用いた例では、比重０．５〜０．６、
圧縮強度８〜１２ｋｇ／ｅｘ２のものが得られた。Prototype example ■: Hydrogen peroxide solution (H20□, 35
% aqueous a) 1%, am calcium (industrial Ca5O, 2820) as a foaming aid 1-10%, sodium perphosphate (industrial NaDO, 4H2) as a strength aid
0) In the example using 1-2%, the specific gravity is 0.5-0.6,
A compressive strength of 8 to 12 kg/ex2 was obtained.
試作例■：この例はゼオライトの性質を生かして完成し
た多孔質焼成材に水分等の吸着機能、脱息機能等をもた
せるためのもので、発泡剤として過酸化水素水（１１□
０□、３５％水溶液）１％を添加したほか、天然ゼオラ
イト粒を重量比３０％又は５０％を各別に添加したもの
を試作した。この場合のゼオライトの粒度は
粒径０．６１で通過率１００％
同 ０．３＋ａ論で 同 ９０％
同０．１５ｍｍで同 ６０％
同０．０７４−一で同 ５０％
のらのを用いた。Prototype example ■: This example utilizes the properties of zeolite to give the porous fired material the ability to adsorb moisture, remove air, etc. Hydrogen peroxide solution (11□
In addition to the addition of 1% (0 □, 35% aqueous solution), trial production was made in which natural zeolite particles were added at a weight ratio of 30% or 50%, respectively. In this case, the particle size of the zeolite is 0.61 and the passage rate is 100%. 0.3+a is 90%, 0.15 mm is 60%, 0.074-1 is 50%. .
その結果ゼオライト量３０％のものでは比重０．５、圧
縮強度３ ｋｇ７ｃｍ３、ゼオライト量５０％のもので
は比重０．４５、圧縮強度２ ｋｇ／ｃｙｚ２のものが
得られた。As a result, a product with a zeolite content of 30% had a specific gravity of 0.5 and a compressive strength of 3 kg/cyz2, and a zeolite content of 50% had a specific gravity of 0.45 and a compressive strength of 2 kg/cyz2.
００表面硬化等
上記のようにして製造されるフライアッシュ成形材を例
えば床材用、路床用等のタイル又は棟瓦として利用する
場合、焼成及１発泡によって気孔率が高い程表面の耐摩
耗性が劣るという難点がある。00 surface hardening, etc. When using the fly ash molded material produced as described above as tiles or ridge tiles for flooring, roadbeds, etc., the higher the porosity due to firing and foaming, the better the surface abrasion resistance. The disadvantage is that it is inferior.
このためこれらの場合は必要に応じて成形材の表面に耐
摩耗性処理を施すことが好ましく、例えば焼成前の成形
品の表面に釉薬、ガラス粉末、その他セラミック素材等
を少量塗布、スプレーその他によって付着させ、焼成に
よって表面をガラス質で形成させることができる。Therefore, in these cases, it is preferable to apply abrasion-resistant treatment to the surface of the molded product as necessary. For example, apply a small amount of glaze, glass powder, or other ceramic material to the surface of the molded product before firing, or apply it by spraying or other means. The surface can be formed into glass by adhering and firing.
これらの硬化層が厚過ぎると表面全体がガラス質の層で
密閉被覆されることになり、表面の通気性、透水性が損
なわれるため、これらの機能を維持する必要がある場合
は釉薬等の付着量は特に薄く少量にする必要がある。If these hardened layers are too thick, the entire surface will be hermetically covered with a glassy layer, impairing the air permeability and water permeability of the surface, so if it is necessary to maintain these functions, use a glaze, etc. The amount of coating needs to be particularly thin and small.
その他の表面硬化法としては焼成完了後プラズマ溶射等
によりガラス質又はセラミックによる表面硬化を施して
もよい。なおこのような表面硬化は発泡剤を添加しない
フライアッシュ成形焼成材表面に対して行っても効果的
である。また成形材の強度アップのためにフライアッシ
ュ内に少量（対プライアッシュ重量比゛１〜２％）のグ
ラスファイバーを混入することも可能である。As another surface hardening method, surface hardening with glass or ceramic may be performed by plasma spraying or the like after completion of firing. Note that such surface hardening is also effective even if it is performed on the surface of the fly ash molded and fired material to which no foaming agent is added. It is also possible to mix a small amount (1 to 2% by weight of fly ash) of glass fiber into the fly ash in order to increase the strength of the molding material.
〈発明の効果〉
以上の如く構成される本発明の方法によれば、多量に廃
棄されるフライアッシュを有効に再利用する上で低比重
高多孔質の通気性、透水性、断熱性、取扱性、加工性、
施工性共に優れた広範囲の用途、例えば天井材、壁材、
タイル、棟瓦等の建築材料のほか、産業用の流体濾過材
としても利用できる。<Effects of the Invention> According to the method of the present invention configured as described above, in order to effectively reuse fly ash that is discarded in large quantities, the air permeability, water permeability, heat insulation properties, and handling properties of low specific gravity and high porosity can be achieved. properties, processability,
A wide range of applications with excellent workability, such as ceiling materials, wall materials,
In addition to being used as building materials such as tiles and ridge tiles, it can also be used as an industrial fluid filtering material.
成形材表面に表面硬化を施したものでは、表面の耐摩耗
性が向上するため床材等に特に有効な材料となる。When the surface of the molded material is hardened, the wear resistance of the surface is improved, making it a particularly effective material for flooring and the like.
Claims (1)
の練製液を加えて混練したものを所定の形に成形し、該
成形物を焼成することにより多孔質成形材を製造するフ
ライアッシュ成形材の製造方法において、上記混練に際
して反応して発泡する少量の発泡剤を添加するフライア
ッシュ成形材の軽量化方法。 ２）発泡剤として過酸化水素水を、発泡補助剤として消
石灰又は硫酸カルシウムを加える特許請求の範囲第１項
に記載のフライアッシュ成形材の軽量化方法。 ３）フライアッシュと少量の有機性のバインダーに適量
の練製液を加えて混練したものを所定の形に成形し、該
成形物を焼成することにより多孔質成形材を製造するフ
ライアッシュ成形材の製造方法において、上記混練に際
して発泡する少量の発泡剤を添加するとともに、成形材
の焼成の前又は後において表面にガラス質、セラミック
質、金属質等による耐摩耗処理を施すフライアッシュ成
形材の軽量化方法。[Claims] 1) A porous molded material is produced by adding an appropriate amount of kneading liquid to fly ash and a small amount of an organic binder, kneading it, molding it into a predetermined shape, and firing the molded product. A method for reducing the weight of a fly ash molding material, in which a small amount of a foaming agent that reacts and foams during the kneading process is added. 2) The method for reducing the weight of a fly ash molded material according to claim 1, wherein a hydrogen peroxide solution is added as a foaming agent, and slaked lime or calcium sulfate is added as a foaming aid. 3) A fly ash molding material in which a porous molding material is produced by adding an appropriate amount of kneading liquid to fly ash and a small amount of organic binder, kneading it, molding it into a predetermined shape, and firing the molded product. In the manufacturing method of the fly ash molding material, a small amount of foaming agent that foams during the above-mentioned kneading is added, and the surface is subjected to wear-resistant treatment with glass, ceramic, metal, etc. before or after firing the molding material. How to reduce weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20793588A JPH0259479A (en) | 1988-08-22 | 1988-08-22 | Method for lightening fly-ash formed material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20793588A JPH0259479A (en) | 1988-08-22 | 1988-08-22 | Method for lightening fly-ash formed material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0259479A true JPH0259479A (en) | 1990-02-28 |
Family
ID=16547977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20793588A Pending JPH0259479A (en) | 1988-08-22 | 1988-08-22 | Method for lightening fly-ash formed material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0259479A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102040361A (en) * | 2010-08-27 | 2011-05-04 | 李宁 | Modified self-insulating composite external wall material |
| CN108455921A (en) * | 2018-04-19 | 2018-08-28 | 宁波纯恒固废科技有限公司 | A kind of preparation method of flyash brick |
| JP2018177636A (en) * | 2017-04-12 | 2018-11-15 | 山崎 勉 | Production method of independent foaming tile and independent foaming tile |
-
1988
- 1988-08-22 JP JP20793588A patent/JPH0259479A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102040361A (en) * | 2010-08-27 | 2011-05-04 | 李宁 | Modified self-insulating composite external wall material |
| JP2018177636A (en) * | 2017-04-12 | 2018-11-15 | 山崎 勉 | Production method of independent foaming tile and independent foaming tile |
| CN108455921A (en) * | 2018-04-19 | 2018-08-28 | 宁波纯恒固废科技有限公司 | A kind of preparation method of flyash brick |
| CN108455921B (en) * | 2018-04-19 | 2021-07-20 | 宁波纯力固废科技有限责任公司 | Preparation method of fly ash brick |
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