JP2752673B2 - How to store refractory raw materials - Google Patents
How to store refractory raw materialsInfo
- Publication number
- JP2752673B2 JP2752673B2 JP63304990A JP30499088A JP2752673B2 JP 2752673 B2 JP2752673 B2 JP 2752673B2 JP 63304990 A JP63304990 A JP 63304990A JP 30499088 A JP30499088 A JP 30499088A JP 2752673 B2 JP2752673 B2 JP 2752673B2
- Authority
- JP
- Japan
- Prior art keywords
- present
- raw materials
- refractory
- refractory raw
- powder
- 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 - Lifetime
Links
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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/4584—Coating or impregnating of particulate or fibrous ceramic material
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Ceramic Products (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、耐火物原料等の保存方法に関し、特に消
化、粉化しやすい物質や、吸湿性、潮解性がある物質
を、長期にわたって高品質に保存がはかれる耐火物原料
等の保存方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for preserving refractory raw materials and the like. The present invention relates to a method for preserving refractory raw materials and the like to be preserved.
〔従来の技術〕 耐火物原料は粉末あるいは粒状で混合され、施工迄の
期間（輸送期間も含めると10日〜100日程度一時保存さ
れる。上記原料の中には消化、あるいは粉化しやすい原
料としてのライム、ドロマイト、マグネシア等が含ま
れ、また、吸湿性、潮解性の強い原料としてのアルミナ
セメント、リン酸ソーダ、リン酸アルミニウム、珪酸ソ
ーダ等のバインダーが含まれる。これ等消化、粉化しや
すい原料、あるいは吸湿性、潮解性の強い原料は経時的
に劣化し、施工時の流動性、硬化特性等を劣化させるだ
けでなく、硬化後の強度にも悪影響を及ぼす。そこで、
従来は消化、粉化しやすい原料はオイルによるコーティ
ングを図ったり、炭酸ガスによる表面処理をした上で、
密閉包装することにより、防水、防湿を図るようにし、
また、吸湿性、潮解性の強い原料も密封包装して防水、
防湿を図っている。[Related Art] Refractory raw materials are mixed in powder or granular form, and are temporarily stored for about 10 to 100 days including the transportation period, including the transportation period. Some of the above raw materials are easily digested or powdered. Lime, dolomite, magnesia, etc., and also binders such as alumina cement, sodium phosphate, aluminum phosphate, sodium silicate, etc. as raw materials having strong hygroscopicity and deliquescence. Raw materials that are easy to absorb or have high hygroscopicity and deliquescent deteriorate over time, not only deteriorating fluidity and hardening characteristics during construction, but also adversely affect the strength after hardening.
Conventionally, raw materials that are easily digested and powdered are coated with oil or surface treated with carbon dioxide gas,
Waterproof and moistureproof by hermetically sealed packaging,
In addition, materials that are highly hygroscopic and deliquescent are also sealed and sealed for waterproofing.
We are trying to prevent moisture.
上記のように耐火物原料のオイルによるコーティン
グ、炭酸ガスによる表面処理、密閉包装による防水、防
湿処理はコストが高く、開封後は早急に使いきる必要が
あるなど、取り扱い上問題があった。As described above, there are problems in handling such as coating of refractory raw material with oil, surface treatment with carbon dioxide gas, waterproofing and moistureproofing treatment by hermetic packaging, which are expensive and need to be used immediately after opening.
また、防水、防湿処理を行ったものでも、品質の経時
劣化が観られる。特に上記原料を、粉末状の不定形耐火
物用として用いた場合、保存中に消化、粉化したり、吸
湿や潮解することで酸化、分解やセメント中のCaイオン
等、他物質と反応したりして、不定形耐火物品質の経時
劣化を生じる。In addition, even after the waterproofing and moistureproofing treatments, the deterioration of the quality with time is observed. In particular, when the above raw materials are used for powdery amorphous refractories, they can be digested during storage, powdered, or oxidized, decomposed or react with other substances such as Ca ions in cement by absorbing and deliquescent. As a result, the quality of the amorphous refractory deteriorates with time.
本発明は、上記従来の事情に鑑みて提案されたもので
あって、消化性、粉化性、あるいは吸湿性、潮解性の高
い物質の劣化を防止することを目的とする。The present invention has been proposed in view of the above-described conventional circumstances, and has as its object to prevent deterioration of a substance having high digestibility, pulverizability, hygroscopicity, and deliquescence.
この発明は上記目的を達成するために、バインダーを
含む耐火物原料中、消化、あるいは粉化しやすいものや
吸湿性、潮解性があるものを耐火物原料の0.5〜６重量
％の疎水性シリカ超微粉と、ヘンシェルミキサー等の混
合機で撹拌羽根の周速100m/分以上で且つ撹拌時間５分
以上の強撹拌することにより、上記の耐火物原料を疎水
性シリカ超微粉でコーティングするようにしている。In order to achieve the above-mentioned object, the present invention relates to a refractory raw material containing a binder which is easily digested or pulverized, and which has a hygroscopic property and a deliquescent property. By finely stirring the refractory material with a hydrophobic silica ultrafine powder by vigorously stirring the fine powder with a mixer such as a Henschel mixer at a peripheral speed of the stirring blade of 100 m / min or more and a stirring time of 5 minutes or more. I have.
上記疎水性シリカ超微粉は、高純度のSiO2で超微粉体
であり、その成分分析値は第１表に示す通りである。The hydrophobic silica ultrafine is an ultra fine powder of high purity SiO 2, the component analysis values are as shown in Table 1.
疎水性シリカ超微粉の使用量は耐火物原料の0.5〜６
重量％が適当で、0.5重量％未満の場合、コーティング
が不十分となる。又、６重量％を越えて使用しても特性
の向上は観られず、使用する必要性がない。撹拌条件と
して、ヘンシェルミキサー等、混合機を用い撹拌羽根の
周速が100m/分以上で、且つ、撹拌時間は５分以上必要
である。The amount of hydrophobic silica ultrafine powder used is 0.5 to 6
If the weight percentage is appropriate and less than 0.5 weight%, the coating will be inadequate. Further, even when used in an amount exceeding 6% by weight, no improvement in characteristics is observed, and there is no need to use it. As the stirring conditions, a mixer such as a Henschel mixer is used, the peripheral speed of the stirring blade is 100 m / min or more, and the stirring time is 5 minutes or more.
撹拌羽根の周速が100m/分未満であるとき、また、撹
拌時間５分未満であるとき、不充分なコーティングしか
得られず好ましくない。When the peripheral speed of the stirring blade is less than 100 m / min, or when the stirring time is less than 5 minutes, insufficient coating is obtained, which is not preferable.
第２図は、上記のようなコーティング処理を施したリ
ン酸ソーダの粒子の表面構造であり、第３図に示す本発
明のコーティング処理を施さない表面構造に比較して、
保護膜が形成されていることが明らかに理解できる。FIG. 2 shows the surface structure of the sodium phosphate particles subjected to the coating treatment as described above, which is compared with the surface structure without the coating treatment of the present invention shown in FIG.
It can be clearly seen that the protective film is formed.
第２表は粉化性物質であるドロマイトに対して本願発
明を適用した場合の実施例と本願発明を適用しない
比較例及び本願発明の範囲外の比較例の配合割
合と特性とを示し、また、併せて吸湿性、潮解性物質で
あるヘキサメタリン酸ソーダに対して本願発明を適用し
た場合の実施例と本願発明を適用しない比較例及
び本願発明の範囲外の比較例の配合割合、特性値
をも示したものである。Table 2 shows the compounding ratio and characteristics of the example in which the present invention is applied to dolomite which is a pulverizable substance, the comparative examples in which the present invention is not applied, and the comparative examples outside the scope of the present invention, and In addition, the hygroscopicity, the compounding ratio of the example and the comparative example not applying the present invention to sodium hexametaphosphate which is a deliquescent substance and the comparative example outside the scope of the present invention, the characteristic value Is also shown.
実施例と比較例との比較からも明らかなように
本願発明品はオートクレーブ法による重量増加率及び粉
化率において、格段の改善がみられる。また、疎水性シ
リカ超微粉の使用量、あるいは撹拌条件が本願発明の範
囲外である場合（比較例）にも相当の効果をあげ
ているが、本願発明よりは効果が格段に劣っている。As is clear from the comparison between the examples and the comparative examples, the product of the present invention shows a remarkable improvement in the weight increase rate and the powdering rate by the autoclave method. Further, when the amount of the ultrafine hydrophobic silica powder or the stirring conditions is out of the range of the present invention (Comparative Example), a considerable effect is obtained, but the effect is remarkably inferior to the present invention.
また、実施例と比較例との比較からも明らかな
ように、本願発明を適用したヘキサメタリン酸ソーダは
本願発明を適用しない場合に比して格段に優れた重量増
加指数を示し、また、本願発明の範囲外での比較例
に比しても充分大きな効果を示している。Further, as is clear from the comparison between the examples and the comparative examples, the sodium hexametaphosphate to which the present invention is applied exhibits a significantly superior weight gain index as compared with the case where the present invention is not applied. A sufficiently large effect is shown even in comparison with Comparative Examples outside the range.
第３表は本願発明を適用したリン酸ソーダを用いた粉
末状の不定形耐火物（実施例）と本発明を全く適用し
ない比較例を示すものである。この第３表からも明ら
かな如く本発明を適用しても、流動性指数は従来品と遜
色なく、特性が劣化しない。しかしながら、第１図から
明らかなように、実施例と比較例の硬化特性は実施
例の方が格段に優れた特性を示している。Table 3 shows a powdery amorphous refractory using sodium phosphate to which the present invention is applied (Example) and a comparative example in which the present invention is not applied at all. As is clear from Table 3, even when the present invention is applied, the fluidity index is not inferior to that of the conventional product, and the characteristics do not deteriorate. However, as is clear from FIG. 1, the curing characteristics of the examples and comparative examples are much better in the examples.
〔発明の効果〕 以上説明したように、この発明により耐火物原料で消
化、粉末しやすいものや、吸湿性、潮解性があるもので
も、長期にわたって高品質に保存することができる。
又、粉末状の不定形耐火物原料として用いた場合、長期
間にわたって品質の経時劣化を防止することができる。 [Effects of the Invention] As described above, according to the present invention, even a refractory raw material that can be easily digested and powdered, or that has a hygroscopic property and a deliquescent property can be stored with high quality for a long period of time.
Further, when used as a powdery refractory raw material, it is possible to prevent the deterioration of quality over time for a long period of time.
第１図は硬化特性の経時変化を示す図、第２図は本願発
明に係るリン酸ソーダの粒子構造を示す図面代用写真、
第３図は本発明の適用しないリン酸ソーダの粒子構造を
示す図面代用写真である。FIG. 1 is a diagram showing the change over time of the curing characteristics, FIG. 2 is a drawing substitute photograph showing the particle structure of the sodium phosphate according to the present invention,
FIG. 3 is a drawing substitute photograph showing the particle structure of sodium phosphate to which the present invention is not applied.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) C04B 35/66──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. 6 , DB name) C04B 35/66
Claims (1)
あるいは粉化しやすいものや吸湿性、潮解性があるもの
を耐火物原料の0.5〜６重量％の疎水性シリカ超微粉
と、ヘンシェルミキサー等の混合機で撹拌羽根の周速10
0m/分以上で且つ撹拌時間５分以上の強撹拌することに
より、上記の耐火物原料を疎水性シリカ超微粉でコーテ
ィングすることを特徴とする耐火物原料等の保存方法。1. A refractory raw material containing a binder, digestion,
Alternatively, a powder which is easily powdered, or a material having hygroscopicity and deliquescent, is mixed with 0.5 to 6% by weight of a hydrophobic silica ultrafine powder of a refractory material and a peripheral speed of a stirring blade of 10 with a mixer such as a Henschel mixer.
A method for preserving a refractory material or the like, characterized in that the refractory material is coated with ultrafine hydrophobic silica powder by vigorous stirring at a rate of 0 m / min or more and a stirring time of 5 minutes or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63304990A JP2752673B2 (en) | 1988-11-30 | 1988-11-30 | How to store refractory raw materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63304990A JP2752673B2 (en) | 1988-11-30 | 1988-11-30 | How to store refractory raw materials |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02149473A JPH02149473A (en) | 1990-06-08 |
| JP2752673B2 true JP2752673B2 (en) | 1998-05-18 |
Family
ID=17939746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63304990A Expired - Lifetime JP2752673B2 (en) | 1988-11-30 | 1988-11-30 | How to store refractory raw materials |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2752673B2 (en) |
-
1988
- 1988-11-30 JP JP63304990A patent/JP2752673B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02149473A (en) | 1990-06-08 |
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