JPS6018625B2 - Stamp material for molten metal containers - Google Patents
Stamp material for molten metal containersInfo
- Publication number
- JPS6018625B2 JPS6018625B2 JP7431481A JP7431481A JPS6018625B2 JP S6018625 B2 JPS6018625 B2 JP S6018625B2 JP 7431481 A JP7431481 A JP 7431481A JP 7431481 A JP7431481 A JP 7431481A JP S6018625 B2 JPS6018625 B2 JP S6018625B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- parts
- particle size
- zircon
- molten metal
- 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
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- Ceramic Products (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Description
【発明の詳細な説明】
本発明は製鋼取鍋等の溶湯容器に内張りされる蓬石又は
ロゥ石−ジルコン質スタンプ材に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rockite or rockite-zircon stamp material for lining a molten metal container such as a steelmaking ladle.
近年取鍋の内張り工法として自動スタンプ法が確立され
たが、この工法に適合するスタンプ材の性状として耐蝕
性、耐摩耗性に陵れることはもちろん充填性や寿命低下
につながる様な亀裂、剥離等の現象がない事が要求され
る。In recent years, the automatic stamping method has been established as a method for lining ladle, but the properties of the stamping material suitable for this method include not only corrosion resistance and abrasion resistance, but also cracking and peeling that may lead to a reduction in filling performance and lifespan. It is required that there be no such phenomena.
これらの性状を保持し得る取鍋スタンプ材として珪石又
はロウ石とジルコン質を用いその粒度を５〜１肋：３５
〜４５重量部、１〜０．０７４側：２０〜３０重量部、
０．０７４側以下：３５〜４５重量部として構成した場
合種々の実験から最も優れていることが判明した。Silica stone or waxite and zircon material is used as the ladle stamp material that can maintain these properties, and the particle size is 5 to 1:35.
~45 parts by weight, 1-0.074 side: 20-30 parts by weight,
0.074 side or less: It has been found from various experiments that a composition of 35 to 45 parts by weight is the most excellent.
このスタンプ材を３４Ｍ取鍋に自動スタンプ機で内張り
実鍋使用した結果、局部溶損が発生し、予測以下の耐用
回数で終ったため原因調査を行ない粒子偏析による充填
むらということが判明した。粒子偏折は主に自動スタン
プ機に附属する材料ホッパー内、ベルトコンベアによる
材料輸送中に発生している。不定形耐火物には高密度充
填が得られる粒度構成があり本発明における適正粒度構
成は特許請求の範囲に示すものであるが、粒子偏折はこ
の構成から大きく逸脱したものとなり充填むらを起し、
局部溶損さらには亀裂、剥離の発生原因となる。粒子偏
析の内組粒子が多く片寄った所では著しく気孔率が上昇
しさらに強度低下があるため、この部分が他より早く溶
損又は暦耗し、いわゆる局部溶損を引き起す。一方微粒
子が多く片寄った所では通気率の低下が起り、混糠水を
加熱により除去する際、施工体内部の蒸気が外部に排出
され離くなるため剥離が発生する。この問題を造粒方法
で解決する提案はすでに特公昭５４一１私４０特公昭５
４一１６５２￥等がみられるが、特公昭弘−１３４４６
は加熱脱水が必要であり、生産性及び経剤性で問題が、
侍公昭５４一１６５２３では有機粘着剤を必要としてお
り乾燥剥離、綾時変化等の問題で取鍋スタンプ材として
適切でない。本発明はこれら従来の方法とは異り箱粒子
のまわりに中粒、微粒子が被覆されているため見頚上の
偏折が存在するが如くみなされても粗粒子又は微粒子が
片寄った集合体とはならず１つの造粒体が粗粒を中心に
その表面に充填に必要な各微粒子を保持しているので、
これを取鍋へ構築しても施工体内部の粒度、偏折による
上記門題点が解消される。本発明では粒度調整及びジル
コン超徴粉、耐火粘土、減水剤、混練水の適正添加によ
り通常の作業法を変更することなく造粒体を得ることが
可能となったものであり、その特徴とするところはジル
コン骨村と、珪石又はロウ石骨材と耐火物粘土の総量が
１００重量部であり、粘度構成は５〜１肋、３５〜４５
重量部、１〜０．０７４肋２０〜３の重量部、０．０７
４側以下３５〜４５重量部で構成され、このうち珪石又
はロゥ石の添加量が５〜２５重量部であり、平均粒径５
山以下のジルコンは３〜６重量部とし、耐火粘土は平均
粒蓬ＩＡ以下のものを３〜７＊＊重量部、減水剤として
ナトリウム塩を０．１〜０．５外割重量部含む耐火組成
物を３〜５重量部の添加水で濠練することにより造粒特
性を持たせた溶湯容器用スタンプ材にある。As a result of using this stamping material in a 34M ladle lined with an automatic stamping machine, local melting damage occurred and the service life was lower than expected.The cause was investigated and it was determined that the filling was uneven due to particle segregation. Particle deflection mainly occurs in the material hopper attached to an automatic stamp machine or during material transportation by a belt conveyor. Monolithic refractories have a particle size structure that allows high-density packing, and the appropriate particle size structure in the present invention is shown in the claims, but particle polarization greatly deviates from this structure and causes uneven filling. death,
This may cause local melt damage, cracking, and peeling. In areas where a large number of internal particles of particle segregation are concentrated, the porosity increases significantly and the strength also decreases, so this area undergoes erosion or wear out faster than other areas, causing so-called local erosion. On the other hand, in places where there are a lot of fine particles, the air permeability decreases, and when the mixed rice bran water is removed by heating, the steam inside the construction body is discharged to the outside and separated, resulting in peeling. A proposal to solve this problem by using a granulation method was already made in 1983.
41 1652 yen etc. are seen, but special public Akihiro-13446
requires heat dehydration, which poses problems in terms of productivity and drug administration.
Samurai Kosho 54-16523 requires an organic adhesive and is not suitable as a ladle stamp material due to problems such as dry peeling and changes in rolling. The present invention differs from these conventional methods in that medium and fine particles are coated around the box particles, so even if it is considered that there is polarization on the neck, it is an aggregate of coarse or fine particles that are unevenly distributed. Instead, one granule holds each fine particle necessary for filling on its surface, centering on coarse particles.
Even if this construction is made into a ladle, the above-mentioned problems caused by the particle size and unevenness inside the construction body can be solved. In the present invention, it has become possible to obtain granules without changing the usual working method by adjusting the particle size and adding zircon super fine powder, fireclay, water reducing agent, and mixing water appropriately, and its characteristics are as follows. The total amount of zircon bone village, silica or waxite aggregate, and refractory clay is 100 parts by weight, and the viscosity composition is 5 to 1, 35 to 45.
Parts by weight, 1 to 0.074 Parts by weight of ribs 20 to 3, 0.07
4 side and below, 35 to 45 parts by weight, of which the added amount of silica stone or loxite is 5 to 25 parts by weight, and the average particle size is 5.
The amount of zircon below the mountain is 3 to 6 parts by weight, the fireclay is 3 to 7** parts by weight of particles below the average grain IA, and the fireproof clay contains 0.1 to 0.5 parts by weight of sodium salt as a water reducing agent. The present invention provides a stamp material for a molten metal container which has granulation properties by kneading the composition with 3 to 5 parts by weight of added water.
以下に本発明の限定理由を説明する。The reasons for the limitations of the present invention will be explained below.
特許請求の範囲に記載した粒度内であれば高密度充填が
得うれ、５〃以下のジルコン添加量が３重量部、平均粒
隆１仏以下の耐火粘土が３重量部梶練水量が３重量部を
それぞれ下まわった時上記した造粒体の造粒率が低下す
る。又平均粒径、５山以下のジルコン添加量が６重量部
を超えた場合通気率の低下が顕著となり剥離の可能性が
、耐火粘土７重量部以上の添加は通気率の低下及び耐蝕
性の低下が顕著となる。さらに涙練水量が５重量部を越
えると中子なしの自動スタンプ機では施工体に膨れ現象
が発生し適切でない。珪石又はロゥ石添加の目的はこれ
らの特有の高膨鞭性を利用し収縮亀裂を防止するためで
あり、５重量部以下ではその効果が充分でなく２５重量
部を超えると耐蝕性が著しく低下する。以下実施例、実
施例により説明する。High-density packing can be obtained if the particle size is within the range of the claims, the amount of zircon added is 3 parts by weight, and the amount of zircon added is 3 parts by weight, and the amount of refractory clay with an average grain height of 1 French or less is 3 parts by weight. %, the granulation rate of the above-mentioned granules decreases. Also, if the amount of zircon with an average particle size of 5 or less exceeds 6 parts by weight, the air permeability will drop significantly and there is a possibility of peeling.If the amount of fireclay added is more than 7 parts by weight, the air permeability will decrease and the corrosion resistance will deteriorate. The decrease becomes noticeable. Furthermore, if the amount of lacrimal water exceeds 5 parts by weight, an automatic stamping machine without a core will cause a swelling phenomenon in the workpiece, making it unsuitable. The purpose of adding silica or loxite is to utilize their unique high swelling properties to prevent shrinkage cracking; if it is less than 5 parts by weight, the effect is not sufficient, and if it exceeds 25 parts by weight, the corrosion resistance will drop significantly. do. This will be explained below with reference to Examples.
実施例 １
第 １ 表
第１表に示すスタンプ材を油圧式成形機により１５０ｋ
９／地の圧力をかけ５０×５０×５０側の成形体を作成
。Example 1 The stamp material shown in Table 1 was molded into 150k by a hydraulic molding machine.
9/ Apply ground pressure to create a 50 x 50 x 50 side molded body.
１１ぴ０で２４時間乾燥後の高比重を測定した。The high specific gravity after drying at 11 pm for 24 hours was measured.
このうち１〜４は特許請求の範囲内の粒度構成であり５
〜８は範囲外であるこの表で明らかな様に特許請求の粒
度範囲からはずれると充填性が著しく低下する。通常の
スタンプ材では粒子偏析による実験例５〜８に示すよう
な粒度構成を持つ施工体になる可能性がある。実施例
２
第 ２ 表
線変化率はＪＩＳＲ２５７６に準じ１４５０ｑ０２時間
焼成後の値を求めた浸蝕量は耐火物関数が多く採用され
ている回転浸蝕試験法で１６００士２０００１餌時間回
転後の溶損量を記入した。Among these, 1 to 4 have particle size configurations within the claimed range, and 5
-8 is outside the range.As is clear from this table, when the particle size is outside the claimed particle size range, the filling properties are significantly reduced. With ordinary stamp materials, there is a possibility that the construction body will have a particle size structure as shown in Experimental Examples 5 to 8 due to particle segregation. Example
2. The rate of change in the second table line is the value obtained after firing for 1450q02 hours in accordance with JISR2576.The amount of erosion is determined by the rotary erosion test method, which is often used for refractory functions, and the amount of erosion after 1600 x 20001 feeding time is entered. did.
このうち９〜１２は特許請求の範囲内、１３〜１４は範
囲外である。Of these, 9 to 12 are within the scope of the claims, and 13 to 14 are outside the scope.
実験例１３は耐蝕性が最も良好であるが線変化率が収縮
となっており実使用においては亀裂の発生が考えられ取
鍋スタンプ材として適切でない。又実験例１４は耐蝕性
が最も悪く珪石又はロウ石添加量が２５重量部以上では
本発明の目的が達成されない。実施例１１と１２を比較
すると錘石の方が若千耐員虫性に優れるがロウ石単独、
又はロウ石、蓮石の併用でも本発明の目的に充分合致す
る。実施例
演綾前の粒度と生産用ウェットパンで加水混糠した後の
粒度構成を比較すると、平均粒径１山以下の耐火粘土、
５仏以下のジルコンと減水剤を使用した実施例１，２に
造粒現象が認められる。Experimental Example 13 has the best corrosion resistance, but the linear change rate is shrinkage, and cracks may occur in actual use, making it unsuitable as a ladle stamp material. Further, Experimental Example 14 had the worst corrosion resistance, and the object of the present invention could not be achieved if the amount of silica or waxite added was 25 parts by weight or more. Comparing Examples 11 and 12, pyrite has better resistance to young insects, but pyrite alone
Alternatively, a combination of waxite and lotus stone also satisfies the purpose of the present invention. Comparing the particle size before rolling and the particle size composition after adding water and mixing in a wet pan for production, it was found that fireproof clay with an average particle size of one pile or less,
A granulation phenomenon was observed in Examples 1 and 2 in which zircon with a diameter of 5 French or less and a water reducing agent were used.
実施例１，２の違いは膨張性原料である珪石とｏウ石で
あるが、実使用においては珪石添加の方が若干耐用回数
が多い。しかしながら、実施例１．２共剥離、局部溶損
は起らず造粒効果が確認された。比較例１に使用した粘
土の平均粒径が５山であったこと又５山以下のジルコン
、減水剤を使用していない事により添加水量が多いにも
かかわらず造粒現象が少なく実使用において偏折が原因
と思われる局部溶損剥離が発生し、その為耐用回数が低
い。The difference between Examples 1 and 2 is the expandable raw materials, silica stone and oval stone, but in actual use, the addition of silica stone has a slightly longer service life. However, neither peeling nor local melting damage occurred in Examples 1 and 2, and the granulation effect was confirmed. Because the average particle size of the clay used in Comparative Example 1 was 5 pores, and because zircon had less than 5 pores and no water reducing agent was used, the granulation phenomenon was small despite the large amount of water added, and in actual use. Localized erosion and peeling occurs, which is thought to be caused by polarization, and as a result, the service life is low.
以上の説明で明らかなように本発明は、膨張性の珪石又
はロゥ石と収縮性のジルコン質を適量混合して骨材とし
、これら骨材を粒度調整してスタンプ時に充填に必要な
粒子構成した造粒体を生成せしめ、これによって、高密
度充填を可能とするので耐蝕性、耐磨耗性に優れた亀裂
、剥離等の発生がないスタンプライニングをすることが
でき、溶湯容器の内壁寿命を長期間に亘つて延長せしめ
、安全且つ円滑な溶湯処理操業を有利に可能とするもの
である。As is clear from the above description, the present invention mixes an appropriate amount of expandable silica or loxite and contractile zircon to form an aggregate, adjusts the particle size of these aggregates, and adjusts the particle size required for filling during stamping. This enables high-density filling, making it possible to create a stamp lining with excellent corrosion resistance and abrasion resistance that does not cause cracking or peeling, thereby extending the life of the inner wall of the molten metal container. This advantageously allows safe and smooth molten metal processing operations to be carried out over a long period of time.
Claims (1)
総量が１００重量部であり粒度構成は５〜１ｍｍ３５〜
４５重量部、１〜０．０７４ｍｍ２０〜３０重量部、０
．０７４ｍｍ以下が３５〜４５重量部で構成されこのう
ち珪石又はロウ石骨材の添加量が５〜２５重量部であり
平均粒径５μ以下のジルコンは３〜６重量部とし耐火粘
土は平均粒径１μ以下のものを３〜７重量部、減水剤と
してのナトリウム塩を０．１〜０．５外割重量部含む耐
火組成物を３〜５外割重量部の添加水で混練することに
より造粒特性を持たせた溶湯容器用スタンプ材。1. The total amount of zircon aggregate, silica or waxite aggregate, and fireclay is 100 parts by weight, and the particle size composition is 5-1 mm35-
45 parts by weight, 1-0.074 mm 20-30 parts by weight, 0
．． 074 mm or less is composed of 35 to 45 parts by weight, of which silica or waxite aggregate is added in an amount of 5 to 25 parts by weight, zircon with an average particle size of 5 μ or less is 3 to 6 parts by weight, and fireclay has an average particle size of 3 to 6 parts by weight. It is produced by kneading a fireproof composition containing 3 to 7 parts by weight of a substance of 1μ or less and 0.1 to 0.5 parts by weight of a sodium salt as a water reducing agent with 3 to 5 parts by weight of added water. Stamp material for molten metal containers with grain characteristics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7431481A JPS6018625B2 (en) | 1981-05-19 | 1981-05-19 | Stamp material for molten metal containers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7431481A JPS6018625B2 (en) | 1981-05-19 | 1981-05-19 | Stamp material for molten metal containers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57191277A JPS57191277A (en) | 1982-11-25 |
| JPS6018625B2 true JPS6018625B2 (en) | 1985-05-11 |
Family
ID=13543529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7431481A Expired JPS6018625B2 (en) | 1981-05-19 | 1981-05-19 | Stamp material for molten metal containers |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6018625B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6214918U (en) * | 1985-07-10 | 1987-01-29 | ||
| US10973238B2 (en) | 2011-03-11 | 2021-04-13 | Intercontinental Great Brands Llc | System and method of forming multilayer confectionery |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2554439B1 (en) * | 1983-11-07 | 1986-02-28 | Sofrem | PROCESS FOR OBTAINING A REFRACTORY PISE BASED ON ELECTRO-MELTED ZIRCON FOR MELTING METALS AND ALLOYS IN AN INDUCTION OVEN |
| JPS63162579A (en) * | 1986-12-26 | 1988-07-06 | 品川白煉瓦株式会社 | Thermosettable monolithic refractories |
-
1981
- 1981-05-19 JP JP7431481A patent/JPS6018625B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6214918U (en) * | 1985-07-10 | 1987-01-29 | ||
| US10973238B2 (en) | 2011-03-11 | 2021-04-13 | Intercontinental Great Brands Llc | System and method of forming multilayer confectionery |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57191277A (en) | 1982-11-25 |
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