JPH0212912B2 - - Google Patents
Info
- Publication number
- JPH0212912B2 JPH0212912B2 JP11659886A JP11659886A JPH0212912B2 JP H0212912 B2 JPH0212912 B2 JP H0212912B2 JP 11659886 A JP11659886 A JP 11659886A JP 11659886 A JP11659886 A JP 11659886A JP H0212912 B2 JPH0212912 B2 JP H0212912B2
- Authority
- JP
- Japan
- Prior art keywords
- aggregate
- ceramic board
- lightweight ceramic
- board according
- sintering
- 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
Links
- 238000005245 sintering Methods 0.000 claims description 33
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 27
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims description 27
- 239000003795 chemical substances by application Substances 0.000 claims description 25
- 239000000919 ceramic Substances 0.000 claims description 23
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 14
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 13
- 235000017550 sodium carbonate Nutrition 0.000 claims description 13
- 235000010344 sodium nitrate Nutrition 0.000 claims description 13
- 239000004317 sodium nitrate Substances 0.000 claims description 13
- 239000010459 dolomite Substances 0.000 claims description 12
- 229910000514 dolomite Inorganic materials 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 239000011230 binding agent Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- SHFGJEQAOUMGJM-UHFFFAOYSA-N dialuminum dipotassium disodium dioxosilane iron(3+) oxocalcium oxomagnesium oxygen(2-) Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Na+].[Na+].[Al+3].[Al+3].[K+].[K+].[Fe+3].[Fe+3].O=[Mg].O=[Ca].O=[Si]=O SHFGJEQAOUMGJM-UHFFFAOYSA-N 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 239000002689 soil Substances 0.000 claims description 7
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 6
- 239000006260 foam Substances 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 238000010304 firing Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 2
- 229910001562 pearlite Inorganic materials 0.000 claims description 2
- 235000019658 bitter taste Nutrition 0.000 claims 1
- 239000004927 clay Substances 0.000 claims 1
- 230000005484 gravity Effects 0.000 description 14
- 239000011162 core material Substances 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000004372 Polyvinyl alcohol Substances 0.000 description 4
- 229910004298 SiO 2 Inorganic materials 0.000 description 4
- 238000005452 bending Methods 0.000 description 4
- 229920002451 polyvinyl alcohol Polymers 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000010451 perlite Substances 0.000 description 3
- 235000019362 perlite Nutrition 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000000701 coagulant Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910017119 AlPO Inorganic materials 0.000 description 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-N Nitrous acid Chemical compound ON=O IOVCWXUNBOPUCH-UHFFFAOYSA-N 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009766 low-temperature sintering Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000005332 obsidian Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Landscapes
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
Description
【発明の詳細な説明】
本発明は、主として、ドアや間仕切りパネルの
芯材として使用される無機質にして軽量セラミツ
クボードとその製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates primarily to an inorganic, lightweight ceramic board used as a core material for doors and partition panels, and a method for manufacturing the same.
［先行技術］
従来、軽量にして無機質の芯材は、気泡コンク
リート板、石綿セメントパーライト板、ケイカル
板等が開発されている。[Prior Art] Conventionally, lightweight inorganic core materials such as aerated concrete boards, asbestos-cement perlite boards, and silica boards have been developed.
コンクリートに発泡剤を混合して発泡状態で硬
化させた気泡コンクリート板（通称ALC板）は
比重が0.5〜0.7と比較的重く、また芯材にとつて
重要な曲げ強度が、比重0.5のALC板において、
８〜10Kg／cm2と弱く、圧縮強度が20〜40Kg／cm2、
吸水率が35〜40％（Vol％）である。 Aerated concrete boards (commonly known as ALC boards), which are made by mixing concrete with a foaming agent and curing in a foamed state, have a relatively heavy specific gravity of 0.5 to 0.7, and the bending strength, which is important for core materials, is the same as ALC boards, which have a specific gravity of 0.5. In,
Weak at 8-10Kg/ cm2 , compressive strength is 20-40Kg/ cm2 ,
Water absorption rate is 35-40% (Vol%).
また、石綿セメントパーライト板も、ALC板
と同様に、硬化、養生に時間が掛り、また比重も
約0.7と重い。更に、ケイカル板も比重が0.6〜0.8
と重い欠点がある。 Also, like ALC boards, asbestos-cement perlite boards take time to harden and cure, and their specific gravity is also heavy at approximately 0.7. Furthermore, Keical board also has a specific gravity of 0.6 to 0.8.
There is a serious drawback.
比重が0.5以下で、強度、特に曲げ強度の強い
芯材として合成樹脂発泡体が開発されているが、
耐熱性に欠け、かつ、火災事故時に有毒ガスを発
生する重大な欠点を持つている。 Synthetic resin foam has been developed as a core material with a specific gravity of 0.5 or less and strong strength, especially bending strength.
It lacks heat resistance and has the serious drawback of emitting toxic gas in the event of a fire.
［本発明の目的］
本発明は、従来の芯材のもつ特性を満足し、こ
れらの欠点を除去すると共に、軽量、強靭、不
燃、断熱、防音、低吸湿性にして更には生産性の
高い軽量セラミツクボード並びにその製造方法を
提供するにある。[Objective of the present invention] The present invention satisfies the characteristics of conventional core materials, eliminates these drawbacks, and provides lightweight, strong, non-combustible, heat-insulating, sound-proofing, low moisture absorption properties, and high productivity. To provide a lightweight ceramic board and a method for manufacturing the same.
［本発明の構成］
本発明に係る軽量セラミツクボードは、骨材が
焼結剤内に分散して焼結されたもので、骨材は、
パーライトやフヨーライト等のセラミツク発泡体
で、焼結剤は、硅酸質土に、焼成時に発泡するソ
ーダ灰と硝酸ソーダとを含み、焼結剤は、粘結剤
と凝集剤とを含む水溶液で湿潤された骨材表面に
付着され、これが一定の形状に成形、保形された
後焼結される。[Structure of the present invention] The lightweight ceramic board according to the present invention is one in which aggregate is dispersed in a sintering agent and sintered, and the aggregate is:
Ceramic foams such as perlite and fuyolite contain sintering agents in silica soil, soda ash and sodium nitrate that foam during firing, and sintering agents are aqueous solutions containing binders and flocculants. It is attached to the moistened surface of the aggregate, which is shaped and maintained in a certain shape, and then sintered.
［好ましい実施例］
この発明の構成と効果を明白にする為、この発
明による製造技法の一実施例を詳述すると次の通
りである。[Preferred Embodiment] In order to clarify the structure and effects of the present invention, one embodiment of the manufacturing technique according to the present invention will be described in detail as follows.
使用する骨材は通称パーライト、あるいはフヨ
ーライトと呼ばれる黒曜石を約1000℃に急熱して
球状の気泡状に膨張させたもので、これを２mm直
径以下と２mm〜５mm直径の２種類によつて粒度調
整した。即ち、
フヨーライト２mmφ以下 750
２mm〜５mmφ 1500
この骨材に、焼結剤を付着せしめる為、骨材に
水分を付与する。しかるに、骨材を単に水分によ
り湿潤させた場合、乾燥後、焼結剤が骨材より剥
離し、また、低温焼結のために、添加するソーダ
灰の水溶性によつてコーテイング表面に折出し、
均一な焼結状態が得られない等の問題を生ずる。
この欠点は、骨材表面に粘結剤と凝集剤とを付着
することで解消できる。粘結剤としてPVA即ち
ポリビニルアルコール、また凝集剤としてリン酸
アルミニウムを水に添加したものが使用できる。
即ち、
水 420
PVA 17ｇ
リン酸アルミニウム40％溶液 2.1c.c.
これを上記骨材と共に、ミキサ内において混合
し、骨材表面に湿潤性を付与する。 The aggregate used is obsidian, commonly known as pearlite, or fuyolite, which is rapidly heated to about 1000℃ and expanded into spherical bubbles.The particle size of this is adjusted by two types: 2mm diameter or less and 2mm to 5mm diameter. did. That is, Fuyorite 2 mmφ or less 750 2 mm to 5 mmφ 1500 Moisture is added to the aggregate in order to attach the sintering agent to the aggregate. However, if the aggregate is simply moistened with water, the sintering agent will peel off from the aggregate after drying, and due to the low-temperature sintering, the sintering agent will be precipitated onto the coating surface due to the water solubility of the added soda ash. ,
This causes problems such as not being able to obtain a uniform sintered state.
This drawback can be overcome by attaching a binder and a coagulant to the surface of the aggregate. PVA or polyvinyl alcohol can be used as a binder, and aluminum phosphate added to water can be used as a flocculant.
That is, 420 water, 17 g of PVA, and 2.1 cc of 40% aluminum phosphate solution are mixed together with the above aggregate in a mixer to impart wettability to the surface of the aggregate.
この骨材に焼結剤粉末を投入、ミキサ内におい
て骨材表面にコーテイングした。焼結剤は、硅酸
質土とソーダ灰と硝酸ソーダとドロマイトからな
らる。即ち、
硅酸質土 2250Kg
ソーダ灰 360Kg
硝酸ソーダ 150Kg
ドロマイト 240Kg
が、混合されてボールミル等で微粉砕された後骨
材表面に付着される。 Sintering agent powder was added to this aggregate and coated on the surface of the aggregate in a mixer. The sintering agent consists of siliceous earth, soda ash, sodium nitrate, and dolomite. That is, 2250 kg of silica soil, 360 kg of soda ash, 150 kg of sodium nitrate, and 240 kg of dolomite are mixed, pulverized in a ball mill, etc., and then attached to the surface of the aggregate.
焼結剤をコーテイングした後一昼夜貯蔵室内に
おいていわゆるねかした後、これを所望の寸法に
成形し焼成温度850℃で１時間焼成した。しかる
のち、用途に合わせて、例えばセラミツクボード
芯材として所望の寸法に再切断して正確な寸法を
得た。 After being coated with a sintering agent, the material was left to rest in a storage room for a day and night, then molded into desired dimensions and fired at a firing temperature of 850° C. for 1 hour. Thereafter, it was cut again to a desired size as a core material for a ceramic board depending on the intended use, for example, to obtain accurate dimensions.
本発明に使用された硅酸質土は下記の通りであ
る。 The silica soil used in the present invention is as follows.
SiO2＝72.00％、Al2O3＝13.50％、Fe2O3＝1.0
％、TiO2＝0.13％、MgO＝0.20％、CaO＝0.90
％、K2O＝3.50％、Na2O＝2.20％、
その他、
ソーダ灰（Na2CO3）は、見掛け比重1.0以下の
水に溶けやすい軽灰を使用したが、見掛け比重が
1.2以上の重灰も使用できた。硝酸ソーダ
（NaNO3）は、いわゆるチリ硝石として天然に産
出する硝酸ナトリウムで、融点が308℃、比重
2.257380℃で分解して亜硝酸となる無色透明な結
晶である。 SiO 2 = 72.00%, Al 2 O 3 = 13.50%, Fe 2 O 3 = 1.0
%, TiO2 = 0.13%, MgO = 0.20%, CaO = 0.90
%, K 2 O = 3.50%, Na 2 O = 2.20%, etc. For soda ash (Na 2 CO 3 ), we used light ash that is easily soluble in water with an apparent specific gravity of 1.0 or less;
Heavy ash of 1.2 or higher could also be used. Sodium nitrate (NaNO 3 ) is sodium nitrate that is naturally produced as so-called chili saltpeter, and has a melting point of 308℃ and a specific gravity of
It is a colorless and transparent crystal that decomposes to nitrous acid at 2.257380°C.
ドロマイトは（Ca、Mg）CO3からなる岩石
で、理論的には、
MgO 21.7％
CaO 30.4％
CO2 47.9％
の化学成分より成り、不純物としてSiO2、
Al2O3、Fe2O3、およびＰを含む。又、ドロマイ
トは原石のままでも原石を高温焼成したドロマイ
トクリンカーの状態でも使用できる。本発明の芯
材に適してドロマイトは、原石の場合、
MgO 16％以上
SiO2 45％以下
Ｐ 0.1％以下
CaO 33％以上
がよく、ドロマイトクリンカーの場合、
MgO 28％以上
SiO2 ３％以下
Ｐ １％以下
のものがよい。 Dolomite is a rock consisting of (Ca, Mg)CO 3. Theoretically, the chemical composition is MgO 21.7% CaO 30.4% CO 2 47.9%, with impurities such as SiO 2 and
Contains Al 2 O 3 , Fe 2 O 3 and P. Further, dolomite can be used either as a raw stone or in the form of dolomite clinker obtained by firing the raw stone at a high temperature. Dolomite suitable for the core material of the present invention is preferably MgO 16% or more and SiO 2 45% or less P 0.1% or CaO 33% or more in the case of dolomite clinker, and MgO 28% or more and SiO 2 3% or less P 1% or less is preferable.
リン酸アルミニウム（AlPO4）は、融点が1500
℃である白色の結晶で40％に調整された水溶液を
使用した。 Aluminum phosphate (AlPO 4 ) has a melting point of 1500
An aqueous solution adjusted to 40% with white crystals was used.
本発明の実施例においては、骨材と水およびリ
ン酸アルミニウムは体積で、計量し、焼結剤およ
び粘結剤は重量で計量した。特にフヨーライトは
見掛け比重が砂の10分の１から20分の１で、非常
に軽量である為、体積が正確に計算できることに
よる。 In the examples of the invention, the aggregate, water and aluminum phosphate were measured by volume, and the sintering and binding agents were measured by weight. In particular, fuyolite's apparent specific gravity is 1/10 to 1/20 of sand, making it extremely lightweight, making it possible to accurately calculate its volume.
骨材の混合量は、これが多い程軽量になるが強
度が弱くなり、低い周波数の防音性が低下し、骨
材が少ない程重くなるが強靭で低い周波数まで広
範囲に優れた防音性を有する。 The larger the amount of aggregate mixed, the lighter the product will be, but the strength will be weaker, and the soundproofing properties at low frequencies will be lowered.
本発明の軽量セラミツクボードは、好ましく
は、見掛け比重0.15〜0.45に決定される。これに
基づいて、骨材に混合比は、重量比で５〜20％、
好ましくは10〜15％に決定される。 The lightweight ceramic board of the present invention preferably has an apparent specific gravity of 0.15 to 0.45. Based on this, the mixing ratio of aggregate is 5 to 20% by weight,
Preferably it is determined to be 10-15%.
焼結剤の混合比は、次の調合範囲が望ましい結
界を得た。 As for the mixing ratio of the sintering agent, the following blending range was found to be desirable.
硅酸質土 50〜80％
ソーダ灰 10〜20％
硝酸ソーダ ３〜８％
ドロマイト ０〜10％
また、骨材の湿潤用の水溶液は、骨材に対し15
〜20％（Vol）リン酸アルミニウム液はPVA水
溶液に対し、0.5〜0.6％（Vol）が安定製造管理
に適していた。Silica soil 50-80% Soda ash 10-20% Sodium nitrate 3-8% Dolomite 0-10% Also, the aqueous solution for wetting the aggregate is 15% to the aggregate.
~20% (Vol) aluminum phosphate solution was suitable for stable manufacturing control at 0.5-0.6% (Vol) compared to PVA aqueous solution.
本発明の軽量セラミツクボードは、焼結剤も発
泡状態で焼結されている。焼結剤は、ソーダ灰と
硝酸ソーダとを含み、これが反応して炭酸ガスを
発生し、融化した焼結剤内に発泡状態を付与す
る。したがつて、ソーダ灰と硝酸ソーダの混合比
を硅酸質土に比べて多くすると、焼結剤の発泡率
が高くなつて全体の見かけ比重が小さくなる。見
掛け比重の小さい芯材は相対的強度が低くなる。
従つて、ソーダ灰と硝酸ソーダの混合比は、要求
される強度と比重および骨材の混合量を考慮して
用途に対し最適の値に決定される。 In the lightweight ceramic board of the present invention, the sintering agent is also sintered in a foamed state. The sintering agent contains soda ash and sodium nitrate, which react to generate carbon dioxide gas and impart a foamed state to the molten sintering agent. Therefore, when the mixing ratio of soda ash and sodium nitrate is increased compared to siliceous soil, the foaming rate of the sintering agent increases and the overall apparent specific gravity decreases. A core material with a small apparent specific gravity has a low relative strength.
Therefore, the mixing ratio of soda ash and sodium nitrate is determined to be the optimum value for the application, taking into consideration the required strength and specific gravity and the amount of aggregate mixed.
ドロマイトの混合量を、ソーダ灰と硝酸ソーダ
に比べて多くすると発泡率が低下するが、特に強
度を強くする場合、ドロマイトを混合せず、反対
に軽くする場合、好ましくは重量比で０〜10％の
ドロマイトを混合する。 If the amount of dolomite mixed is larger than that of soda ash and sodium nitrate, the foaming rate will decrease, but if you want to increase the strength, dolomite is not mixed, and on the other hand, if you want to make it lighter, it is preferably 0 to 10 in terms of weight ratio. % dolomite mixed.
以上の実施例は、粘結剤にPVCを使用したが、
PVCに代わつてCMC、即ちカルボキシメチルセ
ルロースも使用可能である。又、凝集剤には苦利
等も使用可能である。 In the above examples, PVC was used as the binder, but
CMC, ie carboxymethyl cellulose, can also be used instead of PVC. Further, it is also possible to use bitters, etc. as a flocculant.
湿潤された骨材に焼結剤が付着されて一定の形
状に成形された後の焼結条件は、焼結温度750℃
〜1000℃、焼結時間30分ないし３時間の範囲で調
整できる。 The sintering conditions after the sintering agent is attached to the wet aggregate and formed into a certain shape are: sintering temperature 750℃
The sintering time can be adjusted within the range of ~1000℃ and 30 minutes to 3 hours.
以上の様な製造技法により次の効果を生ずる。 The manufacturing technique described above produces the following effects.
セラミツク質軽量骨材が無機質の焼結剤によ
り焼結されているため、物理的化学的強度が強
く、かつ、耐熱性の高い芯材が得られる。 Since the ceramic lightweight aggregate is sintered with an inorganic sintering agent, a core material with strong physical and chemical strength and high heat resistance can be obtained.
焼結剤それ自体が融化し、かつ発泡する為軽
量にして強靭な芯材が得られる。 Since the sintering agent itself melts and foams, a lightweight and strong core material can be obtained.
本願発明者が試作した芯材は、比重を0.31に
調整した資料で、曲げ強度10.8Kg／cm2を実現
し、ACL板に比較して概略同等の曲げ強度で
比重を約半分に減ずることが可能となつた。ま
た、吸水率は14.72％（Vol）で、これもALC
板の約半分に減少した。 The core material prototyped by the inventor of this application has a bending strength of 10.8 kg/cm 2 with a specific gravity adjusted to 0.31, and compared to ACL board, it is possible to reduce the specific gravity by about half with roughly the same bending strength. It became possible. In addition, the water absorption rate is 14.72% (Vol), which is also ALC
It was reduced to about half of the board.
また、本発明による芯材は、完全無機質焼結
体であるため、耐熱、不燃性であり、また短時
間の焼成により製造できる為極めて生産性が高
く、高価な原料を使用しないので、安価に製造
できる等極めて有意義な特徴を備えている。 In addition, since the core material according to the present invention is a completely inorganic sintered body, it is heat resistant and nonflammable, and can be manufactured in a short time by firing, resulting in extremely high productivity.Since it does not use expensive raw materials, it is inexpensive. It has extremely significant features such as being able to be manufactured.
骨材の表面を粘結剤と凝集剤を含む水溶液で
湿潤とし、その表面に焼結剤を付着して全体を
一定の形状に成形、保形し、この状態で焼結す
るので、骨材が焼結剤内に均一に分散されて強
固に焼結されると共に、焼結工程が簡単かつ能
率よくできて生産性を向上できる。 The surface of the aggregate is wetted with an aqueous solution containing a binder and a coagulant, and a sintering agent is applied to the surface to shape and retain the entire body into a certain shape.The aggregate is sintered in this state. is uniformly dispersed in the sintering agent and sintered firmly, and the sintering process can be performed easily and efficiently, improving productivity.
第１図は軽量セラミツクボードの一例を示す斜
視図である。
FIG. 1 is a perspective view showing an example of a lightweight ceramic board.
Claims (1)
散混合焼結されており、骨材はセラミツク発泡骨
材で、これが重量比で５〜20％混合されており、
焼結剤は、重量比で、50〜80％の硅酸質土、ソー
ダ灰、硝酸ソーダが混合されて発泡焼結され、焼
成時に骨材が焼結されている軽量セラミツクボー
ド。 ２ 焼結剤が重量比で10〜20％のソーダ灰を含む
特許請求の範囲第１項記載の軽量セラミツクボー
ド。 ３ 焼成剤が重量比で０〜10％のドロマイトを含
む特許請求の範囲第１項記載の軽量セラミツクボ
ード。 ４ 焼結剤が重量比で３〜８％の硝酸ソーダを含
む特許請求の範囲第１項記載の軽量セラミツクボ
ード。 ５ 骨材がパーライト、フヨーライトのいずれか
又は両方の混合体である特許請求の範囲第１項記
載の軽量セラミツクボード。 ６ 骨材が平均粒子径の異なる複数種の混合体で
ある特許請求の範囲第１項記載の軽量セラミツク
ボード。 ７ 骨材の混合比が５〜20wt％である特許請求
の範囲第１項記載の軽量セラミツクボード。 ８ 硅酸質土が白土である特許請求の範囲第１項
記載の軽量セラミツクボード。 ９ セラミツク発泡骨材が、粘結剤と凝集剤を含
む水溶液で湿潤されてその表面に、50〜80wt％
の硅酸質土、ソーダ灰、硝酸ソーダが被着されて
一定の形状に成形され、これを焼成して焼結剤を
発泡焼結して骨材を内部に分散して焼結すること
を特徴とする軽量セラミツクボードの製造方法。 １０ 粘結剤に、PVCとCMCのいずれか又は両
方が使用される特許請求の範囲第９項記載の軽量
セラミツクボードの製造方法。 １１ 凝集剤に、苦利とリン酸アルミニウムのい
ずれか又は両方が使用される特許請求の範囲第９
項記載の軽量セラミツクボードの製造方法。 １２ 焼結温度が700〜1000℃で、焼結時間が30
分〜３時間である特許請求の範囲第９項記載の軽
量セラミツクボードの製造方法。[Claims] 1. Aggregate is dispersed and sintered in a sintering agent that is sintered in a foamed state, and the aggregate is ceramic foamed aggregate, which is mixed in a proportion of 5 to 20% by weight. and
The sintering agent is a mixture of 50 to 80% by weight of silicic earth, soda ash, and sodium nitrate, which is foamed and sintered, and the aggregate is sintered during firing to create a lightweight ceramic board. 2. The lightweight ceramic board according to claim 1, wherein the sintering agent contains 10 to 20% by weight of soda ash. 3. The lightweight ceramic board according to claim 1, wherein the sintering agent contains 0 to 10% dolomite by weight. 4. The lightweight ceramic board according to claim 1, wherein the sintering agent contains 3 to 8% by weight of sodium nitrate. 5. The lightweight ceramic board according to claim 1, wherein the aggregate is pearlite, fuyolite, or a mixture of both. 6. The lightweight ceramic board according to claim 1, wherein the aggregate is a mixture of multiple types having different average particle diameters. 7. The lightweight ceramic board according to claim 1, wherein the mixing ratio of aggregate is 5 to 20 wt%. 8. The lightweight ceramic board according to claim 1, wherein the siliceous soil is white clay. 9 Ceramic foam aggregate is wetted with an aqueous solution containing a binder and a flocculant, and the surface is coated with 50 to 80 wt%
Silica soil, soda ash, and sodium nitrate are deposited and formed into a certain shape, and this is fired to foam and sinter the sintering agent, dispersing the aggregate inside and sintering. A manufacturing method for lightweight ceramic boards. 10. The method for manufacturing a lightweight ceramic board according to claim 9, wherein either or both of PVC and CMC is used as the binder. 11 Claim 9 in which either or both of bitterness and aluminum phosphate is used as the flocculant.
A method for manufacturing a lightweight ceramic board as described in Section 1. 12 Sintering temperature is 700-1000℃, sintering time is 30
The method for manufacturing a lightweight ceramic board according to claim 9, wherein the manufacturing time is from 1 minute to 3 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11659886A JPS6252189A (en) | 1986-05-20 | 1986-05-20 | Lightweight ceramic board and manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11659886A JPS6252189A (en) | 1986-05-20 | 1986-05-20 | Lightweight ceramic board and manufacture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6252189A JPS6252189A (en) | 1987-03-06 |
| JPH0212912B2 true JPH0212912B2 (en) | 1990-03-29 |
Family
ID=14691114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11659886A Granted JPS6252189A (en) | 1986-05-20 | 1986-05-20 | Lightweight ceramic board and manufacture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6252189A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5624489A (en) * | 1995-01-23 | 1997-04-29 | National Research Council Of Canada | Conversion-preventing additive for high alumina cement products |
-
1986
- 1986-05-20 JP JP11659886A patent/JPS6252189A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6252189A (en) | 1987-03-06 |
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