JPH03183669A - Production of porous calcined and hardened body consisting of coal ash as main raw material - Google Patents
Production of porous calcined and hardened body consisting of coal ash as main raw materialInfo
- Publication number
- JPH03183669A JPH03183669A JP19366189A JP19366189A JPH03183669A JP H03183669 A JPH03183669 A JP H03183669A JP 19366189 A JP19366189 A JP 19366189A JP 19366189 A JP19366189 A JP 19366189A JP H03183669 A JPH03183669 A JP H03183669A
- Authority
- JP
- Japan
- Prior art keywords
- mixture
- coal ash
- molding
- clay
- water
- 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.)
- Granted
Links
- 239000010883 coal ash Substances 0.000 title claims abstract description 38
- 239000002994 raw material Substances 0.000 title claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 239000000203 mixture Substances 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000011230 binding agent Substances 0.000 claims abstract description 19
- 239000004927 clay Substances 0.000 claims abstract description 15
- 239000004576 sand Substances 0.000 claims abstract description 12
- 238000010304 firing Methods 0.000 claims description 17
- 238000000465 moulding Methods 0.000 abstract description 12
- 238000004898 kneading Methods 0.000 abstract description 6
- 230000035699 permeability Effects 0.000 abstract description 4
- 238000001354 calcination Methods 0.000 abstract 4
- 238000012856 packing Methods 0.000 abstract 2
- 238000000034 method Methods 0.000 description 11
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000004568 cement Substances 0.000 description 6
- 238000001723 curing Methods 0.000 description 6
- 239000000654 additive Substances 0.000 description 4
- 239000010440 gypsum Substances 0.000 description 4
- 229910052602 gypsum Inorganic materials 0.000 description 4
- 230000000704 physical effect Effects 0.000 description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 3
- 235000011941 Tilia x europaea Nutrition 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000004571 lime Substances 0.000 description 3
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000004115 Sodium Silicate Substances 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 235000011116 calcium hydroxide Nutrition 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- YDEXUEFDPVHGHE-GGMCWBHBSA-L disodium;(2r)-3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Na+].[Na+].COC1=CC=CC(C[C@H](CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O YDEXUEFDPVHGHE-GGMCWBHBSA-L 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 235000011121 sodium hydroxide Nutrition 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 229910052911 sodium silicate Inorganic materials 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 244000215068 Acacia senegal Species 0.000 description 1
- 241000416162 Astragalus gummifer Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000084 Gum arabic Polymers 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 229920001615 Tragacanth Polymers 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 235000010489 acacia gum Nutrition 0.000 description 1
- 239000000205 acacia gum Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 229920001592 potato starch Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- -1 roads Substances 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 229910052572 stoneware Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002747 voluntary effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Processing Of Solid Wastes (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、石炭灰を利用して土木・造園用のブロック
や、建築用のボード等の材料として使用できる、石炭灰
を主原料とする多孔質焼成硬化体の製造方法に関するも
のである。[Detailed description of the invention] (Field of industrial application) This invention utilizes coal ash as a main raw material, which can be used as a material for civil engineering and landscaping blocks, construction boards, etc. The present invention relates to a method for producing a porous fired and cured body.
（従来の技術）
現在、石炭火力発電所は１１４７万ＫＷ、 ４９基の設
備が設置されているが、計画・建設中の設備が１７１０
万ＫＷ、２２基あるので、２０００年頃には２８５７万
ＫＷ、７１基と飛躍的に増大するものと推察される。こ
れに伴い石炭灰の発生量は現在の年間３９０万トンから
大幅に増加するものと考えられる。(Conventional technology) Currently, 49 coal-fired power plants with a capacity of 11.47 million KW have been installed, but 1,710 units are currently being planned or under construction.
Since there are 22 units of 1,000,000 KW, it is estimated that the number will increase dramatically to 28,570,000 KW and 71 units by around 2000. As a result, the amount of coal ash generated is expected to significantly increase from the current 3.9 million tons per year.
現在、発生する石炭灰のうち、有効利用されているもの
は僅かで、大部分は埋め立て用や灰捨て場へ投棄処分さ
れている。しかし廃棄物処理法への対応から多くの問題
があり、有効利用に関する技術開発が望まれている。Currently, only a small amount of the coal ash generated is put to effective use, and the majority is disposed of in landfills or ash dumps. However, there are many problems related to compliance with the Waste Disposal Law, and there is a need for technological development for effective use.
石炭灰の有効利用の分野は、セメント用、道路用、コン
クリート混和剤用及び建材用等あり、粉体として素材の
まま利用するか、固化して利用するかに大別できる。The fields in which coal ash can be effectively used include cement, roads, concrete admixtures, and building materials, and can be roughly divided into whether it is used as a raw material in the form of powder or it is used after solidification.
周知のとおり、石炭灰はそのままでは固化しないので、
今までに多くの固化方法が提案されている。As is well known, coal ash does not solidify as it is, so
Many solidification methods have been proposed so far.
例えば次の如きものがある。For example, there are the following.
（イ）特公昭６３−１７７９１号では、石炭灰に水また
は苛性ソーダまたは珪酸ソーダ水溶液を混合して加圧成
形後、乾燥・焼結する方法。(a) Japanese Patent Publication No. 63-17791 discloses a method in which coal ash is mixed with water, caustic soda, or an aqueous solution of sodium silicate, pressure-molded, and then dried and sintered.
（０）特開昭５７−１４５０６４号では、石炭灰にセメ
ントを加え、更に水または海水で混練し、加圧成形・藩
気養生する方法。(0) JP-A No. 57-145064 discloses a method in which cement is added to coal ash, which is further kneaded with water or seawater, followed by pressure molding and curing.
（ハ）特開昭６２−．２１７７５号では、石炭灰とセメ
ントの混合物に、水と起泡剤を加えて混練発泡させ、所
定の成形体とし、常温湿空中で養生する方法。(c) Unexamined Japanese Patent Publication No. 62-. No. 21775 discloses a method of adding water and a foaming agent to a mixture of coal ash and cement, kneading and foaming the mixture to form a predetermined molded product, and curing it in a humid atmosphere at room temperature.
（ニ）特開昭５６−６９２６２号では、特定組成の石炭
灰と脱ガス性粒状物質の混合物にバインダーを添加特定
圧下で成形し、特定温度で焼結する方法。(d) JP-A No. 56-69262 discloses a method in which a binder is added to a mixture of coal ash of a specific composition and degassing granular material, the mixture is formed under a specific pressure, and the mixture is sintered at a specific temperature.
（ネ）特開昭６１−１２７６７９号では、石炭灰・石灰
および石膏を含む水性スラリーのゲル化物を成型し養生
する方法。(ne) JP-A-61-127679 discloses a method of molding and curing a gelled aqueous slurry containing coal ash, lime, and gypsum.
（へ）特開昭６２−２５６７４７号では、石炭灰に石灰
岩・ポルトランドセメント・消石灰を特定量添加して焼
成する方法。(f) JP-A No. 62-256747 discloses a method of adding specific amounts of limestone, Portland cement, and slaked lime to coal ash and then firing the mixture.
これらの従来技術はいづれも石炭灰に、石灰・セメント
・石膏・消石灰や、苛性ソーダ・珪酸ソーダ等の無機薬
品を加えて成形し、養生または焼成する方法である。All of these conventional techniques involve adding lime, cement, gypsum, slaked lime, or inorganic chemicals such as caustic soda or sodium silicate to coal ash, shaping it, and curing or baking it.
（発明が解決しようとする課題）
上記した従来の提案は、石炭灰に対する添加物の量が比
較的多くて石炭灰を９０％以上使用するものは見られず
、石炭灰の有効利用度が低く、しかもその添加物は、石
灰やセメントや石膏等でありこれらを多量に使用すると
コスト高となるとなるといった問題があり、さらに粘結
剤が限定されていることから入手に不便が生じることが
あり、また、硬化手段において、養生する方法では製品
化までに時間が掛り過ぎることと、養生のための広い場
所が必要となるといった問題があり、一方の焼成する方
法は１２００−１３００″Ｃの高温によっていたため燃
料費等がかさばり、コストアップにつながるといった問
題等多くの課題があって、これらの解決が望まれていた
。(Problems to be Solved by the Invention) The above-mentioned conventional proposals involve a relatively large amount of additives to coal ash, and there are no proposals that use more than 90% of coal ash, resulting in a low degree of effective utilization of coal ash. Moreover, the additives used are lime, cement, gypsum, etc., and if they are used in large quantities, the cost becomes high.Furthermore, because the binder is limited, it may be inconvenient to obtain it. In addition, when it comes to curing methods, there are problems in that it takes too much time to produce a product and a large area is required for curing. There were many problems, such as the fuel cost being bulky and leading to an increase in costs, and solutions to these problems were desired.
本発明は、上記した従来の課題を解決して、材料の殆ど
が石炭灰であり、粘結剤の選択の幅が広く、焼成温度が
比較的低温で製品化でき、その製品は、かさ比重が小さ
くかつ吸水性、透水性を有する、石炭灰を主原料とする
多孔質焼成硬化体の製造方法を提供することを目的とす
るものである（課題を解決するための手段）
上記の目的を達するためのこの発明は、石炭灰と、該石
炭灰の重量比１０％以下の量の砂または粘土との混合物
１００重量部に、天然または人工の粘結剤１〜５重量部
と、水１５〜３０重量部を加えて、常温常圧下で混練し
たものを型枠に充填またはプレス底形により所定の形状
に成形した後、該成形品を焼成炉に入れ、８〜２４時間
かけて最高焼成温度１０５０〜１１５０°Ｃに達せしめ
る焼成条件において焼成する、石炭灰を主原料とする多
孔質焼成硬化体の製造方法である。The present invention solves the above-mentioned conventional problems. Most of the material is coal ash, there is a wide range of binder selection, and the product can be manufactured at a relatively low firing temperature. The product has a bulk specific gravity. The purpose of the present invention is to provide a method for producing a porous calcined hardened body using coal ash as a main raw material, which has small water absorption properties and water permeability (means for solving the problem). To achieve this, the present invention comprises adding 100 parts by weight of a mixture of coal ash and sand or clay in an amount of not more than 10% by weight of the coal ash, 1 to 5 parts by weight of a natural or artificial binder, and 15 parts by weight of water. After adding ~30 parts by weight and kneading at room temperature and normal pressure, the product is filled into a mold or molded into a predetermined shape using a press bottom shape, and then the molded product is placed in a firing furnace and baked for 8 to 24 hours. This is a method for producing a porous fired and hardened body using coal ash as a main raw material, which is fired under firing conditions that reach a temperature of 1050 to 1150°C.
上記した天然粘結剤は、強力小麦粉、片栗粉、溶性澱粉
、トラガントゴム、アラビヤゴム等であり、人工粘結剤
は、ポリビニールアルコールやリグニンスルホン酸ソー
ダを主成分とする商品名ホゾリスＮｏ７０、サンエキス
Ｐ−２００、サンエキスＰ−２０１、サンエキスＰ−２
５２、サンエキスＳＣＰ等である。The natural binders mentioned above are strong wheat flour, potato starch, soluble starch, gum tragacanth, gum arabic, etc., and the artificial binders are products such as Hozolith No. 70 and Sunextract P, which are mainly composed of polyvinyl alcohol and sodium lignin sulfonate. -200, Sunextract P-201, Sunextract P-2
52, Sunextract SCP, etc.
（作用）
石炭灰に砂または粘土を少量（重量比１０％以下）を添
加することにより、この砂や粘土が骨材としての機能を
果たして、粘結剤と水とを加えて混練したものを型枠に
入れ、またはプレスして成形した成形品が型面れしなく
なるとともに、焼成した製品の強度を増すことができる
。(Function) By adding a small amount of sand or clay (10% or less by weight) to coal ash, this sand or clay will function as an aggregate, making it possible to create a mixture by adding a binder and water. A molded product placed in a mold or pressed will not lose its surface, and the strength of the fired product can be increased.
また、成形品を焼成炉に入れて、予め、石炭灰と、添加
した砂や土のもつ特性に応して計画された昇温プログラ
ムに従って焼成すると、成形物中に含まれる未然炭素と
粘結剤を完全に燃焼させるとともに、石炭灰が集結して
粒度組成に変化が生じ、この燃焼と粒度組成変化により
威彫物内部に多数の細孔ができることにより、軽量で吸
水性及び透水性を有する多孔質焼成硬化体かえられる。In addition, if the molded product is placed in a kiln and fired according to a temperature increase program planned in advance according to the characteristics of the coal ash and the sand and soil added, unused carbon contained in the molded product and caking will occur. As the agent is completely burned, the coal ash aggregates and the particle size composition changes, and this combustion and particle size composition change creates many pores inside the stoneware, creating a porous structure that is lightweight and has water absorption and water permeability. The fired and hardened product can be changed.
（実施例） 以下この発明の詳細な説明する。(Example) This invention will be described in detail below.
第１図は本発明の工程を示すブロック図で、石炭灰９０
％以上と砂または粘土１０％以下を混合したものに粘結
剤と水とを加えて、混練、成形、焼成の工程を経て多孔
質焼成硬化体を得ることを示しており、以下具体例を２
例示す。Figure 1 is a block diagram showing the process of the present invention.
% or more and 10% or less of sand or clay, a binder and water are added to it, and a porous fired and hardened body is obtained through the steps of kneading, molding, and firing. Specific examples are given below. 2
Illustrate.
実施例１
石炭灰９５重量部に、瓦原料用、まさ土５重量部を加え
た混合物１００重量部に、リグニンスルホン酸ソーダを
主成分とする粘結剤（市販名ボゾリスＮｏ７０） ２
重量部と、水２０重量部を加え混練して坏土を得、この
坏土を金型（１０１ＷＸ６１１（Ｘ ２１２Ｌ叩）に充
填（充＠量約２．４４ｋｇ） シ、これを油圧プレス
で加圧成型（１００ｋｇ／ｃＪ程度）した後金型より取
り出し、自然乾燥及び１００″Ｃ前後で加熱通風乾燥し
て、所定の形状及び焼成工程に移動できる強度を存する
成型品を得た。Example 1 To 100 parts by weight of a mixture of 95 parts by weight of coal ash and 5 parts by weight of Masato for tile raw material, a binder whose main component is sodium ligninsulfonate (commercial name: Bozolith No. 70) 2
parts by weight and 20 parts by weight of water were added and kneaded to obtain a clay, and this clay was filled into a mold (101W x 611 (x 212L punch) (filling amount: approximately 2.44 kg). This was then processed using a hydraulic press. After pressure molding (approximately 100 kg/cJ), it was removed from the mold, air-dried, and heated and ventilated at around 100''C to obtain a molded product having a predetermined shape and strength enough to be transferred to the firing process.
次いで、この成形品をプロパンガス窯（内容積０．２５
ｒｒ？）に入れて、あらかしめ設定した第２図に示す昇
温プログラムに従って１４時間かけて最高温度１１００
″Ｃに達する焼成条件により焼成して多孔質焼成硬化体
を得た。この多孔質焼成硬化体を供試体６個について物
性を測定した結果、付表１の通りであった。この物性値
から判断して、充分な実用性を備えているものと認めら
れた。Next, this molded product was placed in a propane gas oven (inner volume: 0.25
rr? ) to a maximum temperature of 1100 over 14 hours according to the preset temperature increase program shown in Figure 2.
A porous fired and hardened body was obtained by firing under firing conditions that reached ``C.The physical properties of six test pieces of this porous fired and hardened body were measured, and the results were as shown in Appendix Table 1. Judging from these physical property values. It was recognized as having sufficient practicality.
実施例２
この実施例２は、天然及び人工の１１種の粘結剤を用い
て製品化の可否を知るために行ったもので、石炭灰９７
重量部と、瓦原料用のまさ±３重量部からなる混合物１
００重量部に対して、付表２に示す種類と量の粘結剤と
、適当な粘性を持つ坏土が得られる程度の水を加えて、
モルタル旦キサ−（容量５１）により、各粘結剤毎に１
時間づつ混練して１１種の坏土を得、この坏土を、それ
ぞれ木製の型枠（４ＷＸ ４ ＨＸ１６Ｌｃｍ）に手詰
め法により充填（充填量的５００ｇ） シ、このままの
状態でｌ夜装置して水分を自然に減少させた後型枠を取
り外して成形品を取り出した。この成形品を自然乾燥及
び１００”Ｃ前後で加熱通風乾燥して、所定の形状及び
焼成工程へ移動できる強度を有する１１種類の粘結剤の
異なる成形品を得た。Example 2 This Example 2 was conducted to find out whether it is possible to commercialize products using 11 types of natural and artificial binders.
Mixture 1 consisting of parts by weight and ±3 parts by weight for tile raw materials
00 parts by weight, add the type and amount of binder shown in Attached Table 2 and water to the extent that clay with appropriate viscosity is obtained.
1 for each binder by mortar mixer (capacity 51)
11 types of clay were obtained by kneading for hours at a time, and these clays were filled into wooden molds (4 W x 4 H x 16 L cm) by hand (filling amount: 500 g). After the moisture content was reduced naturally, the mold was removed and the molded product was taken out. The molded products were air-dried and then heated and ventilated at around 100''C to obtain molded products of 11 different binders, each having a predetermined shape and strength enough to be transferred to the firing process.
次いで、この成形品を電気炉（内容積３０Ｗ×３０ＨＸ
６０Ｌｃｍ）によりあらかじめ設定した第３図に示す昇
温プログラムに従って２日間に分けた合計１６時間かけ
て最高温度１１３０’Ｃに達する焼成条件により焼成し
て１１種類の多孔質焼成硬化体を得た。Next, this molded product was heated in an electric furnace (inner volume 30W x 30H
60 Lcm) according to the preset temperature increase program shown in FIG. 3, and was fired under firing conditions that reached a maximum temperature of 1130'C over a total of 16 hours divided into two days to obtain 11 types of porous fired and hardened bodies.
この１１種類の多孔質焼成硬化体の物性をそれぞれ測定
した結果付表２の通りであった。The physical properties of these 11 types of porous fired and cured bodies were measured and the results are shown in Appendix Table 2.
この物性値は、粘結剤の種類によって、特に機械的強度
において大幅な差があるがそれぞれの特性が活用できる
用途に向けることにり、いずれも実用性を（＋ｉηえて
いるものと認められた。These physical property values vary greatly depending on the type of binder, especially in terms of mechanical strength. .
（発明の効果）
以上説明したこの発明に係る石炭灰を主原料とする多孔
質焼成硬化体の製造方法によれば、添加物の量が少なく
て、石炭灰が原料の９０％以上を占めることから、石炭
灰の有効利用率が高く、また添加物は砂または粘土であ
ることから、従来のセメントや石膏等に比べ安価であり
、しかもこの砂や粘土を少量加えることにより、これが
骨材の機４゜
能を果たして成形特の型部れや、乾燥時のクラックの発
生を防止し、焼成による歪を軽減することができ、さら
に粘結剤は天然・人工の何れも使用できる利点と、焼成
温度が従来方法より低温であることから燃料費等の焼成
コストの低減が果たせる利点を有する。(Effects of the Invention) According to the method for producing a porous fired and hardened body using coal ash as the main raw material according to the present invention described above, the amount of additives is small and coal ash accounts for 90% or more of the raw material. Therefore, the effective utilization rate of coal ash is high, and since the additive is sand or clay, it is cheaper than conventional cement or gypsum. Moreover, by adding a small amount of sand or clay, it can be used as an aggregate. It has the advantage of being able to prevent warping of mold parts during molding, cracks during drying, and reduce distortion caused by firing, and can use either natural or artificial binders. Since the firing temperature is lower than that of conventional methods, it has the advantage of reducing firing costs such as fuel costs.
また製品は多孔質軽量であり、吸水性、透水性を有する
ことから、土木、造園用のブロックや建築用ボード等に
広く利用可能な多孔質焼成硬化体が得られるものである
。Furthermore, since the product is porous and lightweight, and has water absorption and water permeability, a porous fired and hardened product can be obtained that can be widely used for civil engineering, landscaping blocks, construction boards, etc.
第１図は本発明の工程を示すブロック図、第２図及び第
３図は焼成における昇温プログラムを折線グラフで示し
た図である。
！Ｉｌｌ 側 Ｐ
手続補正書（自発）
平底 １年 ９月 ５日
２゜
３゜
４゜
平底 １年 特許願 第 １９３６６１ 号発明の
名称
石炭灰を主原料とする多孔質焼成硬化体の製造方法補正
をする者
事件との関係 特許出願人
住所
氏名 中 国 電 力 株式会社FIG. 1 is a block diagram showing the process of the present invention, and FIGS. 2 and 3 are graphs showing temperature increase programs during firing. ! Ill side P Procedural amendment (voluntary) Flat bottom 1 year September 5th 2゜3゜4゜ Flat bottom 1 year Patent application No. 193661 Title of invention Amendment to the manufacturing method of a porous calcined hardened body using coal ash as the main raw material Relationship with the patent applicant’s case Name and address of patent applicant Chugoku Electric Power Co., Ltd.
Claims (1)
は粘土との混合物１００重量部に、粘結剤１〜５重量部
と、水１５〜３０重量部を加えて常温常圧下で混練した
ものを型枠に充填またはプレス成型により所定の形状に
成形した後、該成形品を焼成炉に入れ、８〜２４時間か
けて最高焼成温度１０５０〜１１５０℃に達せしめる焼
成条件において焼成することを特徴とする、石炭灰を主
原料とする多孔質焼成硬化体の製造方法。1 to 5 parts by weight of a binder and 15 to 30 parts by weight of water are added to 100 parts by weight of a mixture of coal ash and sand or clay in an amount of 10% or less by weight of the coal ash, and the mixture is heated at room temperature and pressure. After the kneaded product is filled into a mold or press-molded into a predetermined shape, the molded product is placed in a firing furnace and fired under firing conditions that reach a maximum firing temperature of 1050 to 1150°C over 8 to 24 hours. A method for producing a porous fired and hardened body using coal ash as a main raw material, characterized by the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19366189A JPH07108827B2 (en) | 1989-07-25 | 1989-07-25 | Method for producing a porous fired and hardened body using coal ash as a main raw material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19366189A JPH07108827B2 (en) | 1989-07-25 | 1989-07-25 | Method for producing a porous fired and hardened body using coal ash as a main raw material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03183669A true JPH03183669A (en) | 1991-08-09 |
| JPH07108827B2 JPH07108827B2 (en) | 1995-11-22 |
Family
ID=16311669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19366189A Expired - Fee Related JPH07108827B2 (en) | 1989-07-25 | 1989-07-25 | Method for producing a porous fired and hardened body using coal ash as a main raw material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07108827B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5665290A (en) * | 1991-12-02 | 1997-09-09 | Sicowa Verfahrenstechnik Fur Baustoffe Gmbh & Co. Kg | Process for manufacturing brick mouldings |
| KR20020065190A (en) * | 2001-02-06 | 2002-08-13 | 정한주 | Process for producing bricks using coal ash |
| KR20040008734A (en) * | 2002-07-19 | 2004-01-31 | 한갑수 | The manufacturing method of light weight material useing coal ash |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101132167B1 (en) * | 2011-06-30 | 2012-04-05 | 이상우 | Preparation method of fireproof sandwich panel |
-
1989
- 1989-07-25 JP JP19366189A patent/JPH07108827B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5665290A (en) * | 1991-12-02 | 1997-09-09 | Sicowa Verfahrenstechnik Fur Baustoffe Gmbh & Co. Kg | Process for manufacturing brick mouldings |
| KR20020065190A (en) * | 2001-02-06 | 2002-08-13 | 정한주 | Process for producing bricks using coal ash |
| KR20040008734A (en) * | 2002-07-19 | 2004-01-31 | 한갑수 | The manufacturing method of light weight material useing coal ash |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07108827B2 (en) | 1995-11-22 |
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