JPS58145666A - Acid resistant castable - Google Patents
Acid resistant castableInfo
- Publication number
- JPS58145666A JPS58145666A JP57027483A JP2748382A JPS58145666A JP S58145666 A JPS58145666 A JP S58145666A JP 57027483 A JP57027483 A JP 57027483A JP 2748382 A JP2748382 A JP 2748382A JP S58145666 A JPS58145666 A JP S58145666A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- parts
- acid
- castable
- sodium
- 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
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- Ceramic Products (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】 本発明は、耐酸キャスタブルに関する。[Detailed description of the invention] The present invention relates to acid-resistant castables.
工業炉の煙突、煙道ダクトなどの内張りに使用されるキ
ャスタブルには、アルミナセメントあるいはポルトラン
ドセメントをバインダーとした而」火キャスタブル、ケ
イ酸ソーダをバインダーとした耐酸キャスタブル、ケイ
酸ソーダとアルミナセメントラバインダーとした耐水・
耐酸キャスタブルなどがある。しかし、これらのものは
耐酸性、耐熱水性などの点で満足できるものではなく、
長期の使用では酸との反応による浸食、酸液浸透による
ケーンング腐食を生じ、それが熱水による崩壊で加速さ
れた劣化を伴なうものであった。Castable used for lining industrial furnace chimneys, flue ducts, etc. includes fire castable with alumina cement or portland cement as a binder, acid-resistant castable with sodium silicate as a binder, and sodium silicate and alumina cement laminated castable. Water resistant with binder
There are acid-resistant castables, etc. However, these products are not satisfactory in terms of acid resistance, hot water resistance, etc.
Long-term use resulted in corrosion due to reaction with acids and caning corrosion due to acid solution penetration, which was accompanied by accelerated deterioration due to disintegration by hot water.
本発明の目的は、耐酸性・耐熱水性を改良したキャスタ
ブルを提供しようとするものであって、本発明は、ケイ
酸ソーダとアルミナセメントにバインダーとするキャス
タブルにおいて、骨材として耐酸性の優れたセルベンに
酸浸透防止剤として特定粒度の高ケイ酸質微粉を添加し
、更に高ケイ酸質微粉の分散剤としてリグニンスルホン
酸ソーダを添加していることを特徴とする。An object of the present invention is to provide a castable with improved acid resistance and hot water resistance. It is characterized in that high silicic acid fine powder of a specific particle size is added to Cerben as an acid penetration inhibitor, and furthermore, lignin sulfonate sodium is added as a dispersant for the high silicic acid fine powder.
本発明の原料について詳述すると、セルベンは、衛生陶
器等の製造時発生する不良品等、磁器、せっ器又は陶器
の原料’ｋ１０００’ｃ以上で焼き締めたそれらの生成
品又は完成品を粉砕し粒度調整したものである。したが
って骨材としてセルベンを５０〜８０重量部の割合で使
用すると、セルベンが高ケイ酸質であり、さらに高温で
焼結されていて、酸液の浸透・酸液との反応が全くない
ために、キャスタブルの耐酸性には著しい向上がみられ
る。To explain in detail about the raw materials of the present invention, Selven crushes products or finished products baked with porcelain, stoneware, or earthenware raw materials of 1000'c or more, such as defective products that occur during the manufacturing of sanitary ware, etc. The particle size has been adjusted. Therefore, if Cervene is used as an aggregate at a ratio of 50 to 80 parts by weight, Cervene is highly silicic acid and is sintered at high temperature, so there is no penetration of acid solution or reaction with acid solution. , there is a significant improvement in the acid resistance of castable.
高ケイ酸質の微粉としては、セルベン、非晶質７リノＪ
、石英、ケイソウ士、雲母、含水ケイ酸、無水ケイ酸な
どの微粉もしくは超微粉である４０重量係以上のケイｅ
−を含有する高ケイ酸質微粉を挙げることができる。微
粉の粒径は５０μ以下であることが必要である。この微
粉を５〜１５重量部の割合で添加すれば、キャスクプル
成形体は緻密になり、空隙が酸液と反応しない高ケイ酸
質微粉で充填されて酸液の浸透が防げるため、キャスタ
ブル成形体の酬嘔性が向上する。As fine powder with high silicic acid content, Cerben, Amorphous 7 Reno J
, quartz, diatomite, mica, hydrated silicic acid, anhydrous silicic acid, etc. fine or ultra-fine powder with a weight coefficient of 40 or more
Highly silicic acid fine powder containing - can be mentioned. The particle size of the fine powder must be 50 μm or less. If this fine powder is added at a ratio of 5 to 15 parts by weight, the cask pull molded product becomes dense and the voids are filled with high silicic acid fine powder that does not react with the acid solution, preventing penetration of the acid solution. The ability to vomit is improved.
キャスタブルが、セルベン５０〜８０重量部、粒径５０
μ以下の高ケイ酸質微粉５〜１５重量部、ケイ酸ソーダ
５〜１５重量部、ケイフッ化ソーダ２〜５重量部及びア
ルミナセメント５〜１５重量部を配合混合し、次いで所
定の水を加えて混練した状態となったときに、骨材であ
るセルベンの空隙部は高ケイ酸質微粉、ケイ酸ソーダ、
ケイフッ化ソーダ及びアルミナセメントで充填されるこ
とになる。しかし、以上の組成の場合には、おのおのの
粒子は各自が凝集した状態で存在し、空隙部が十分に満
たされた状態とはなっていない。この凝集状態を分散し
、特に筒ケイ酸質微粉を極めて微細々空隙部に゛まで充
填させ、一段と緻密なキャスタブル成形体を得るための
分散剤としてリグニンスルホン酸ソーダをキャスタブル
総配合量（セルベ／、高ケイ酸質微粉、ケイ酸ソーダ、
ケイ７゜化ソーダ、アルミナセメント及び必要に応じ配
合されるその他配合物量の合計であって混練水量を含ま
ない）Ｋ対し００１〜２０重量％を添加する必要がある
。リグニンスルホン酸ソーダが０．０１重量％未満であ
ると高ケイ酸質微粉などはよく分散せず緻密な成形体が
得られず、２０重量％を超えて添加されるとキャスタブ
ルの硬化時間が短かくなりすぎるため好ましくない。Castable contains 50 to 80 parts by weight of Selben, particle size 50
5 to 15 parts by weight of high silicic acid fine powder of less than μ, 5 to 15 parts by weight of sodium silicate, 2 to 5 parts by weight of sodium fluorosilicide, and 5 to 15 parts by weight of alumina cement are mixed, and then the specified amount of water is added. When the mixture is mixed, the voids in the aggregate Cerben are filled with high silicic acid fine powder, sodium silicate,
It will be filled with sodium silicofluoride and alumina cement. However, in the case of the above composition, each particle exists in an aggregated state, and the voids are not sufficiently filled. Sodium ligninsulfonate is used as a dispersant in order to disperse this agglomerated state and to fill the extremely fine voids with the cylindrical silicic acid fine powder to obtain an even denser castable molded product. , high silicic acid fine powder, silicate soda,
It is necessary to add 0.01 to 20% by weight of K (the total amount of sodium silicide, alumina cement, and other ingredients blended as necessary, excluding the amount of kneading water). If sodium ligninsulfonate is less than 0.01% by weight, high silicic acid fine powder will not be dispersed well and a dense molded product will not be obtained, and if it is added in excess of 20% by weight, the curing time of the castable will be shortened. This is not desirable because it becomes too dark.
ケイ酸ソーダはバインダーとして用いられ、成形体に強
度を賦力するために、５〜１５重量部混合する必要があ
る。またケイフッ化ソーダはケイ酸ソーダの硬化剤とし
て使用さ一、ｔ″Ｉ７、適度な硬化性を力えるために２
〜５重量部必要である。アルミナ３−
セメントは成形体に耐熱水性を賦力するために添加し、
その添加量は５〜１５重量部必要である。Sodium silicate is used as a binder and needs to be mixed in an amount of 5 to 15 parts by weight in order to impart strength to the molded product. Sodium fluorosilicide is also used as a hardening agent for sodium silicate.
~5 parts by weight are required. Alumina 3- Cement is added to impart hot water resistance to the molded body,
The amount added is required to be 5 to 15 parts by weight.
以下実施例に基いて本発明を具体的に説明し、耐酸性能
が従来のキャスタブルに比べ格段に向」こしたことを示
す。The present invention will be specifically explained below based on Examples, and it will be shown that the acid resistance performance is significantly improved compared to conventional castables.
実施例１〜６
骨材として、粒径が３〜１．５ｍり、１．５〜０．３
ｍｍのセルベンを用い、高ケイ酸質微粉として、５０μ
以下のセルベン、１０μ以下の非晶質シリカ超微粉を用
い、ケイ酸ソーダ粉末、ケイフッ化ソーダ、アルミナセ
メント、分散剤としてのりゲニンスルホン酸ソーダを、
下記第１表実施例１〜６記載の配合割合で調合した。Examples 1 to 6 As aggregate, particle size is 3 to 1.5 m, 1.5 to 0.3
50μ as high silicic acid fine powder using Cerben of mm
Using the following Selben, ultrafine amorphous silica powder of 10μ or less, sodium silicate powder, sodium silicofluoride, alumina cement, and sodium geninsulfonate as a dispersant.
The compositions were prepared in the proportions listed in Examples 1 to 6 in Table 1 below.
比較のため、骨材としてシャモットヲ使用した配合（比
較例１．２）、高ケイ酸質微粉を使用しない配合（比較
例３）、及びリグニンスルホン酸ソーダを使用しない配
合（比較例４）の比較例についても第１表のとおり調合
した。For comparison, a formulation using chamotte as an aggregate (Comparative Example 1.2), a formulation that does not use high silicic acid fine powder (Comparative Example 3), and a formulation that does not use sodium lignin sulfonate (Comparative Example 4) were compared. The examples were also prepared as shown in Table 1.
上記実施例・比較例の配合物を所定水量で混練し、金型
（４０Ｘ４０Ｘ１６０ＭＭ）Ｋ鋳込み、２０′Ｃで４−
硬化させた後、各種試験全行外った。その結果も第１表
に示す。The formulations of the above Examples and Comparative Examples were kneaded with a predetermined amount of water, cast in a mold (40 x 40 x 160 MM), and cured at 20'C. All tests failed. The results are also shown in Table 1.
なお、試験方法につき説明する。「１１０℃乾燥後カサ
比重」ばＪＩＳ Ｒ２６５５、ｒｌｌｏ’ｃ乾燥後曲げ
強さ」はＪＩＳ Ｒ２５５３に準じて測定した。「耐酸
テスト後の外観」は、試料’ｉ １１０℃で乾燥後５０
％Ｈ２ＳＯ４水溶液中に室温で１週間浸漬し、表面の剥
離状態などにより判定した。「耐酸テスト後の酸浸透深
さ」は、前記外観観察後、試料をダイヤモンドカッター
で切断し、断面にｐＨ指示薬（メチルレッド）を滴下し
赤色に変色した部分の試料表面からの深さをノギスで測
定した。The test method will be explained below. The "bulk specific gravity after drying at 110° C." was measured according to JIS R2655, and the "bending strength after drying at 110° C." was measured according to JIS R2553. "Appearance after acid resistance test" is 50% after drying sample'i at 110℃.
%H2SO4 aqueous solution at room temperature for one week, and the peeling state of the surface was evaluated. The "acid penetration depth after acid resistance test" is determined by cutting the sample with a diamond cutter after observing the appearance, dropping a pH indicator (methyl red) on the cross section, and measuring the depth from the sample surface of the part that turns red using a caliper. It was measured with
第１表にみるように、本発明による耐酸キャスタブルは
、骨材セルベンによる耐酸性とともに、高ケイ酸質微粉
々リグニンスルホン酸ソーダとによる緻密便によって、
耐酸性能が従来キャスタブルに比べて格段に向上してい
ることがわかる。As shown in Table 1, the acid-resistant castable according to the present invention has not only acid resistance due to the Cerben aggregate, but also due to the compaction due to the high silicic acid finely divided sodium ligninsulfonate.
It can be seen that the acid resistance performance is significantly improved compared to conventional castable.
第 １ 表 特許出願人 代理人Table 1 patent applicant agent
Claims (1)
イ酸質微粉５〜１５重量部、ケイ酸ソーダ５〜１５重量
部、ケイフッ化ソーダ２〜５重量部、アルミナセメント
５〜１５重量部及びキャスタブル総配合量に対し０．０
１〜２０１〜２０重量部ンスルホン酸ソーダからなるキ
ャスタブル。1 50 to 80 parts by weight of Selben, 5 to 15 parts by weight of high silicic acid fine powder with a particle size of 50 μ or less, 5 to 15 parts by weight of sodium silicate, 2 to 5 parts by weight of sodium silicofluoride, 5 to 15 parts by weight of alumina cement, and 0.0 based on the total amount of castable
A castable comprising 1 to 201 to 20 parts by weight of sodium sulfonate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57027483A JPS58145666A (en) | 1982-02-24 | 1982-02-24 | Acid resistant castable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57027483A JPS58145666A (en) | 1982-02-24 | 1982-02-24 | Acid resistant castable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58145666A true JPS58145666A (en) | 1983-08-30 |
| JPH0124749B2 JPH0124749B2 (en) | 1989-05-12 |
Family
ID=12222372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57027483A Granted JPS58145666A (en) | 1982-02-24 | 1982-02-24 | Acid resistant castable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58145666A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109369201A (en) * | 2018-12-20 | 2019-02-22 | 无锡远能耐火材料有限公司 | Anticorrosive castable and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5051110A (en) * | 1973-09-06 | 1975-05-07 | ||
| JPS5330124A (en) * | 1976-09-01 | 1978-03-22 | Kansai Hoon Kogyo Kk | Spraying indeterminate form refractories with acid proof |
| JPS5515927A (en) * | 1978-07-17 | 1980-02-04 | Tokyo Yogyo Kk | Nonshaped refractory |
| JPS573772A (en) * | 1980-06-04 | 1982-01-09 | Kurosaki Refractories Co | Hydraulic refractory composition |
-
1982
- 1982-02-24 JP JP57027483A patent/JPS58145666A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5051110A (en) * | 1973-09-06 | 1975-05-07 | ||
| JPS5330124A (en) * | 1976-09-01 | 1978-03-22 | Kansai Hoon Kogyo Kk | Spraying indeterminate form refractories with acid proof |
| JPS5515927A (en) * | 1978-07-17 | 1980-02-04 | Tokyo Yogyo Kk | Nonshaped refractory |
| JPS573772A (en) * | 1980-06-04 | 1982-01-09 | Kurosaki Refractories Co | Hydraulic refractory composition |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109369201A (en) * | 2018-12-20 | 2019-02-22 | 无锡远能耐火材料有限公司 | Anticorrosive castable and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0124749B2 (en) | 1989-05-12 |
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