JPS632853A - Al2o3-c base light burnt brick for lining molten metal vessel and manufacture - Google Patents
Al2o3-c base light burnt brick for lining molten metal vessel and manufactureInfo
- Publication number
- JPS632853A JPS632853A JP61145549A JP14554986A JPS632853A JP S632853 A JPS632853 A JP S632853A JP 61145549 A JP61145549 A JP 61145549A JP 14554986 A JP14554986 A JP 14554986A JP S632853 A JPS632853 A JP S632853A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- weight
- molten metal
- bricks
- lining
- 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
- 239000011449 brick Substances 0.000 title claims description 42
- 239000002184 metal Substances 0.000 title claims description 23
- 229910052751 metal Inorganic materials 0.000 title claims description 23
- 238000004519 manufacturing process Methods 0.000 title claims description 4
- 239000000843 powder Substances 0.000 claims description 49
- 239000002245 particle Substances 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 239000011451 fired brick Substances 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 239000011230 binding agent Substances 0.000 claims description 4
- 239000005388 borosilicate glass Substances 0.000 claims description 4
- 239000000571 coke Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011863 silicon-based powder Substances 0.000 claims description 3
- 230000008602 contraction Effects 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- 229910021364 Al-Si alloy Inorganic materials 0.000 claims 1
- 238000004898 kneading Methods 0.000 claims 1
- 230000007797 corrosion Effects 0.000 description 16
- 238000005260 corrosion Methods 0.000 description 16
- 230000000052 comparative effect Effects 0.000 description 14
- 238000004901 spalling Methods 0.000 description 10
- 230000007423 decrease Effects 0.000 description 9
- 239000002893 slag Substances 0.000 description 9
- 230000008595 infiltration Effects 0.000 description 8
- 238000001764 infiltration Methods 0.000 description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- INJRKJPEYSAMPD-UHFFFAOYSA-N aluminum;silicic acid;hydrate Chemical compound O.[Al].[Al].O[Si](O)(O)O INJRKJPEYSAMPD-UHFFFAOYSA-N 0.000 description 3
- 230000003078 antioxidant effect Effects 0.000 description 3
- 229910052850 kyanite Inorganic materials 0.000 description 3
- 239000010443 kyanite Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- MXRIRQGCELJRSN-UHFFFAOYSA-N O.O.O.[Al] Chemical compound O.O.O.[Al] MXRIRQGCELJRSN-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- BYFGZMCJNACEKR-UHFFFAOYSA-N aluminium(i) oxide Chemical compound [Al]O[Al] BYFGZMCJNACEKR-UHFFFAOYSA-N 0.000 description 2
- 229910001570 bauxite Inorganic materials 0.000 description 2
- 235000008429 bread Nutrition 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052851 sillimanite Inorganic materials 0.000 description 2
- 229910052845 zircon Inorganic materials 0.000 description 2
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 2
- MJGPTHPXMVMHPS-UHFFFAOYSA-N 1,3,2-dioxathietan-4-one Chemical compound O=C1OSO1 MJGPTHPXMVMHPS-UHFFFAOYSA-N 0.000 description 1
- JVKRKMWZYMKVTQ-UHFFFAOYSA-N 2-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]pyrazol-1-yl]-N-(2-oxo-3H-1,3-benzoxazol-6-yl)acetamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C=1C=NN(C=1)CC(=O)NC1=CC2=C(NC(O2)=O)C=C1 JVKRKMWZYMKVTQ-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 101100348017 Drosophila melanogaster Nazo gene Proteins 0.000 description 1
- 206010015150 Erythema Diseases 0.000 description 1
- 240000000018 Gnetum gnemon Species 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 229910000676 Si alloy Inorganic materials 0.000 description 1
- 229910004738 SiO1 Inorganic materials 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 229910052770 Uranium Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910052849 andalusite Inorganic materials 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- 229910021383 artificial graphite Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 229910021382 natural graphite Inorganic materials 0.000 description 1
- 239000011465 paving brick Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Compositions Of Oxide Ceramics (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】
〔産業上の利用分野〕
本発明は、溶鋼等の溶融金属の運殿、注入、二次精錬等
のための溶融金属容器のライニングとして使用される軽
焼れんがとその製造方法に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a light burnt brick used as a lining for a molten metal container for transporting, pouring, secondary refining, etc. of molten metal such as molten steel, and the like. Regarding the manufacturing method.
溶融金属容器の内壁を溶融金属による侵食から保Ｓｉす
るために、その内壁にライニングが施されている。この
ライニングに使用される内張り用れんかには、耐食性、
熱的及び構造的な耐スポーリング性、目地安定性、非高
熱伝導性、耐不純物ピックアップ性等に優れていること
が要求される。In order to protect the inner wall of the molten metal container from erosion by the molten metal, the inner wall is lined. The lining brick used for this lining has corrosion resistance,
It is required to have excellent thermal and structural spalling resistance, joint stability, non-high thermal conductivity, impurity pick-up resistance, etc.
このような内張り用れんがとして、昔からロウ石１ ジ
ルコンれんが等が使用されている。しかし、ロウ石、ジ
ルコンれんが等は、特に操業条件が過酷になってきてい
る最近の溶融金属容器の内張り材として使用するときに
は耐食性が充分でない。As such lining bricks, waxite 1 zircon bricks and the like have been used for a long time. However, waxite, zircon brick, etc. do not have sufficient corrosion resistance, especially when used as lining materials for modern molten metal containers, where operating conditions have become increasingly severe.
また、これらのＳｉＯ□を多く含むれんがでは、１８１
１ｊ４によるＳｉのピンクアンプが生じ易く、また、れ
ん力（から７容綱に移行したＳｉＯ１により、ン容鋼の
脱酸を行うときに使用する脱酸材の消費量が増加するこ
とになる。In addition, these bricks containing a large amount of SiO□ have 181
Pink amplifier of Si due to 1j4 is likely to occur, and the amount of deoxidizing material used when deoxidizing steel is increased due to SiO1 transferred from 1j4 to 7 capacity steel.
そこで１．ｓｉＯ□質れんかに代えて、マグネシャーク
ロム、マグネシャーライム系等の塩基性れんがや高アル
ミナれんがの使用が試みられた。So 1. Instead of SiO□ bricks, attempts have been made to use basic bricks such as magnesha chrome and magnesha lime bricks and high alumina bricks.
しかし、塩基性れんがは、熱膨張率が大きく耐熱的スポ
ーリング性が低く、そのため、耐用性が充分でな（、そ
の優れた耐食性を充分に活用することができない。However, basic bricks have a large coefficient of thermal expansion and low thermal spalling resistance, and therefore do not have sufficient durability (and cannot fully utilize their excellent corrosion resistance).
また、耐食性及びＳｉピックアップに起因する欠陥の発
生は、ＡｌｚＯｘ含有量が７０％以上の高アルミナれん
がを使用することにより防止することができる。しかし
、高アルミナれんがの場合でも、使用中に塩基性れんが
と同様、スラグ浸潤が大きくなり、構造的耐スポーリン
グ性の劣化によるれんがの剥離が生じ易く、またスラグ
浸潤に伴って応力下でのれんがの収縮により目地損耗の
聞届が起こる。この対策として、たとえば特公昭３８−
１４４号公報、特公昭４５−１４９０９号公報、特公昭
４９−７３０１号公報に記載されているように、Ｓｉｎ
、超微粉、 Ｃｒｚ０２粉末等の添加が提案されている
が、このような成分添加によっても、性質の改善は未だ
充分ではない。Furthermore, the occurrence of defects due to corrosion resistance and Si pickup can be prevented by using high alumina bricks with an AlzOx content of 70% or more. However, even in the case of high alumina bricks, like basic bricks, slag infiltration increases during use, and the bricks tend to peel off due to deterioration of structural spalling resistance. Due to the shrinkage of the bricks, there is evidence of joint wear. As a countermeasure for this, for example,
Sin
, ultrafine powder, Crz02 powder, etc. have been proposed, but even with the addition of such ingredients, the properties are still not sufficiently improved.
他方、転炉、混銑車等においては、黒鉛を１０％以上含
む１ｇｏ−Ｃ，＋ｕｔＯ，−Ｃれんがが一般的に使用さ
れている。これら４ｇｏ−〇、 Ａ１．Ｏ，−Ｃれんが
ではスラグ浸潤の問題はないが、熱転黒率が大きく、そ
のため、熱放散が大きく、溶湯が温度低下しやすい、ま
た、れんがのＣ含有量が高いことがら、溶鋼にＣピック
アップの問題も生じる。On the other hand, in converters, pig iron mixers, etc., 1go-C, +utO, -C bricks containing 10% or more of graphite are generally used. These 4go-〇, A1. O,-C bricks do not have the problem of slag infiltration, but they have a high heat transfer black rate, which causes large heat dissipation, and the temperature of the molten metal tends to drop.Also, because the brick has a high C content, it is difficult for the molten steel to contain C. There is also the issue of pickup.
本発明において解決すべき問題点は、前述の高アルミナ
れんがの欠点であるスラグ浸潤に伴う構造スポーリング
、目地損耗等を防止することにより、取鍋、タンデイ７
シユ等の溶融金属容器内張り用としての耐用性を向上さ
せることにある。The problem to be solved by the present invention is to prevent ladle, tandy
The object of the present invention is to improve the durability as a lining for molten metal containers such as bottles.
ｃ問題点を解決するための手段〕
本発明の溶融金属容器内張り用れんがは、Ｃ粉末を５〜
０．５型皿％とＵ 、Ｏ，を７０〜９０重量％含有する
Ａ１．Ｏ，−Ｃ系軽焼れんがであって、１５００℃で３
時間コークス中で熱処理した後の残存膨縮率が＋０．１
〜＋０．８％の範囲内であることによって上記問題点を
解消したものである。Means for Solving Problems C] The brick for lining a molten metal container of the present invention contains C powder from 5 to 5%.
A1.0.5 type dish containing 70-90% by weight of U, O,. It is an O,-C type light fired brick, which has a temperature of 3 at 1500℃.
Residual expansion/contraction ratio after heat treatment in coke for hours is +0.1
The above-mentioned problem is solved by being within the range of ~+0.8%.
さらに、このＵｘ０３−Ｃ系軽焼れんがは、粒径が０．
２１ｍ鳳以上のＣ粉末５〜０．５重量％と、ＳｉＣ粉末
。Furthermore, this Ux03-C type light fired brick has a particle size of 0.
5 to 0.5% by weight of C powder of 21m or more and SiC powder.
Ｓ ｉ ２ Ｎ ４扮末、金属Ａｌ粉末金金属Ｓｉ粉末
／Ｕ −Ｓｉ合金粉末及び硼珪酸ガラス粉末から選ばれ
た一種又は二種以上１〜５重量％、残部がＡｌｚＯｘ−
ＳｉＯ□系粉末からなり、且つＡ１ｔＯｘ含１１が７０
〜９０重量％の混合原料を樹脂バインダを用いて混練、
成形した後、３００℃以下で熱処理することによって製
造される。1 to 5% by weight of one or more selected from Si2N4 powder, metal Al powder, gold metal Si powder/U-Si alloy powder, and borosilicate glass powder, the balance being AlzOx-
Consisting of SiO□-based powder and containing 11
~90% by weight of mixed raw materials are kneaded using a resin binder,
After molding, it is manufactured by heat-treating at 300°C or less.
本発明のＡ７２Ｏ，−Ｃ系軽焼れんかには、従来のアル
ミナ質れんかにおける最大の欠点であるスラグの浸潤に
伴う構造的スポーリング及び目地損耗を防止するために
Ｃ粉末を含有させている。The A72O, -C light fired brick of the present invention contains C powder in order to prevent structural spalling and joint wear due to slag infiltration, which are the biggest drawbacks of conventional alumina bricks. There is.
このＣ粉末量の添加含有量は、全量に対し０．Ｓｉｔ％
未満ではスラグ浸潤防止作用が不充分であり、また５重
量％を越えるときには溶鋼中へのＣの溶解によるＣピッ
クアンプの問題がある。この点から、Ｃ粉末量の添加含
有量を、０．５〜５重量％の範囲内にする必要がある。The added content of this C powder amount is 0. Sit%
If it is less than 5% by weight, the effect of preventing slag infiltration is insufficient, and if it exceeds 5% by weight, there is a problem of C pick amplifier due to dissolution of C into the molten steel. From this point of view, the amount of C powder added needs to be within the range of 0.5 to 5% by weight.
また、Ｃ粉末の粒度が０．２ｍｍより大きいと、Ｃ粉末
の酸化又は溶解に伴う組織の劣化が大きくなり耐食性が
低下することから、使用するＣ粉末の粒度は、粒径を０
．２ｍｍ以下にする必要がある。In addition, if the particle size of the C powder is larger than 0.2 mm, the deterioration of the structure due to oxidation or dissolution of the C powder will increase and the corrosion resistance will decrease.
．． It must be 2 mm or less.
使用されるＣ粉末としては、カーボン・ブラック、無煙
炭粉、メソカーボン粉、コークス粉、天然黒鉛粉２人工
黒鉛等がある。これら原料の種類及び■は、溶鋼に対す
る溶解性、耐酸化性等を考慮して選ぶ必要がある。たと
えば、Ｃ粉末として黒鉛を使用する場合、その含ｆｉｔ
を４重量％以内に抑えないと、れんがの熱転４率が大き
くなり、取鍋、タンデイツシュ等の溶融金属容器の鉄皮
が赤熱され易くなる。Examples of the C powder used include carbon black, anthracite powder, mesocarbon powder, coke powder, natural graphite powder, artificial graphite, and the like. The type and (1) of these raw materials must be selected in consideration of solubility in molten steel, oxidation resistance, etc. For example, when using graphite as C powder, its content
If it is not kept within 4% by weight, the heat transfer ratio of the bricks will increase, and the iron skin of molten metal containers such as ladles and tundishes will become red hot.
”ｚ（ｈ−ＳｉＯ□系原料としては、電融アルミナ、焼
結アルミナ、仮焼アルミナ、焼ボーキサイト、焼パン土
質ケツ岩１合成ムライト、シリマナイト。``z(h-SiO□-based raw materials include fused alumina, sintered alumina, calcined alumina, calcined bauxite, baked bread earthy rock 1 synthetic mullite, and sillimanite.
カイアナイト、アンダリューサイト、ロウ石、シャモッ
ト、粘土、シリカ粉末等を使用することができる。ただ
し、混合物におけるＡｌ２Ｏ，含有量が７００重量％未
満あるとき、れんがの耐食性が不足する。他方、Ａｌ２
Ｏ，含有量が９０重Ｎ％を越えるときには、れんがの膨
張が大きくなり耐スポーリング性が低下する。Kyanite, andalusite, waxite, chamotte, clay, silica powder, etc. can be used. However, when the Al2O content in the mixture is less than 700% by weight, the corrosion resistance of the bricks is insufficient. On the other hand, Al2
When the content of O exceeds 90% by weight, the expansion of the brick increases and the spalling resistance decreases.
また、スピネル生成による残存膨張性付与の目的のため
に、食合するＡ７，０３の７重量％以下を、５〜Ｑ、５
ｍｍ、望ましくは３〜１１鳳の粒度をもち、ＣａＯ含有
量が２重量％以下のＭｇＯで置換することもできる。In addition, for the purpose of imparting residual expandability through spinel formation, 7% by weight or less of the interdigitated A7,03 was added to 5~Q,5
It can also be replaced by MgO having a particle size of 3 to 11 mm, preferably 3 to 11 mm, and a CaO content of 2% by weight or less.
更に、本発明のＡ１．ｏ、−ｃ系軽焼れんかに、前述の
添加Ｃ粉末及びバインダから生成したカーボンボンドの
酸化を防止するため、ＳｉＣ粉末、ＳｉｚＮａわ）末、
Ａ１扮末、 Ｓｉ粉末、Ａ７Ｓｉ粉末、硼珪酸ガラス粉
末から選ばれた一種又は二種以上を添加する。Furthermore, A1 of the present invention. In order to prevent the oxidation of the carbon bond generated from the above-mentioned added C powder and binder, SiC powder, SizNa powder,
One or more selected from A1 powder, Si powder, A7Si powder, and borosilicate glass powder are added.
これら成分の添加ヱは、混合物全体に対して１重量％未
満ではその酸化防止作用が不充分であり、また５重量％
を超すとＳｉＣ，Ｓｉ３ＮａのＩが多すぎることによる
耐食性の低下、添加金属による焼結。If these components are added in an amount of less than 1% by weight based on the entire mixture, their antioxidant effect will be insufficient, and if they are added in an amount of 5% by weight,
If it exceeds 100%, corrosion resistance decreases due to too much I in SiC and Si3Na, and sintering due to added metals.
ＳｉＣ，ＳｉｘＮａの酸化によるＳｉｎ、生成量が多く
なり、それに伴って耐スポーリング性の低下が生しる。The amount of Si generated due to the oxidation of SiC and SixNa increases, resulting in a decrease in spalling resistance.
内張り用れんがは築炉精度を考慮して、通常１〜３ｍ富
の厚みの目地モルタルによって取鍋、タンデイツシュ等
の溶融金属容器にライニングされる。Taking into account the accuracy of furnace construction, lining bricks are usually lined with molten metal containers such as ladles and tundishes using joint mortar with a thickness of 1 to 3 meters.
この目地形成用モルタルは、熱を受けると収縮する性質
を持つ、しかしながら、作業性、耐久ポーリング性等を
考慮すると、このモルタル■を少なくするために、内張
りれんがを極度に大きくすることはできない。したがっ
て、内張りのためのれんが間の目地の故は多くならざる
を得ない。この目地が多く存在することは、それだけ鍋
傾動時のれんが脱落の要因となる目地開きが大きな問題
となる。This joint-forming mortar has the property of shrinking when exposed to heat. However, in consideration of workability, durability of poling, etc., it is not possible to make the lining bricks extremely large in order to reduce this mortar. Therefore, the number of joints between the bricks used for lining must increase. The presence of many joints poses a major problem, which is the opening of the joints, which causes bricks to fall off when the pot is tilted.
したがって、れんがの性質改善によりスラグの浸潤が防
止できたとしても、目地開きを防止しない限り、溶融金
属容器、特に取鍋のようにオーブンタイプで且つ平底の
構造を有するタイプでは充分な耐用性を得ることができ
ない。Therefore, even if it is possible to prevent slag infiltration by improving the properties of bricks, unless joint opening is prevented, molten metal containers, especially oven-type and flat-bottomed types such as ladles, will not have sufficient durability. can't get it.
この点、本発明のれんかにおいては、１５００℃で３時
間コークス中で熱処理した後の残存膨張率を特定範囲に
抑えることによって目地開きを防止している。＋０．１
％以下にすることは、目地開きを防止できず問題であり
、また、この残存膨張率が十０．８％を超えると、敷れ
んがのように抑えが充分きいている個所ではれんがの角
欠けが生じ、また、壁のようにれんが抑えのきかない個
所では水平目地の目地開きが生じる。この点から、前記
残存膨張率を＋０．１〜＋０．８％の範囲に調整してい
る。残存膨張率を調整するための配合物としてはシリカ
粉末、ロウ石粉末、アングリユーサイト粉末。シリマナ
イト粉末、カイアナイト粉末、焼ボーキサイト粉末、焼
パン土質ケツ岩等のＡＺ、０３−ＳｉＯｆ系耐火物を使
用するが、残存膨張性５耐食性を考えて銘柄の選択及び
添加量を決定する必要がある。In this regard, in the brick of the present invention, opening of the joints is prevented by suppressing the residual expansion coefficient within a specific range after heat treatment in coke at 1500° C. for 3 hours. +0.1
If the residual expansion rate exceeds 100.8%, it is a problem as it will not prevent the opening of the joints, and if the residual expansion rate exceeds 100.8%, the corners of the bricks will be chipped in places where the restraint is sufficiently applied, such as when paving bricks. Also, in areas where the bricks cannot be restrained, such as walls, horizontal joints may open. From this point of view, the residual expansion coefficient is adjusted to a range of +0.1 to +0.8%. The compounds used to adjust the residual expansion rate include silica powder, waxite powder, and angrieusite powder. AZ, 03-SiOf-based refractories such as sillimanite powder, kyanite powder, baked bauxite powder, baked bread shale, etc. are used, but it is necessary to select the brand and determine the amount added in consideration of residual expansion 5 corrosion resistance. .
残存膨張性の点からは、カイアナイト粉末、ロウ石粉末
、シリカ粉末が効果的である。From the point of view of residual expansion, kyanite powder, waxite powder, and silica powder are effective.
しかし、これらのＡ’ｚ（ｈ−ＳｉＯｚ系原料は、Ｆｅ
ｄ。However, these A'z (h-SiOz-based raw materials are Fe
d.
ＮａｚＯ＋ ＫｚＯ，ＴｉＯ２等のフラックス成分を
多く含むため、耐食性の点で制限を生し易い。Since it contains a large amount of flux components such as NazO+ KzO and TiO2, it tends to be limited in terms of corrosion resistance.
Ａｌｔｏｓ−Ｓｉｏ□系以外に残存膨張性を与えるもの
としてはｈｇｏがある。しかし、このＭｇＯ粉末の粒径
が５■曹を超すと、ｈｇｏと、ＵｔＯ，によるスピネル
化反応による膨張が局所的に大きくなり、れんが組織を
破壊するので好ましくない。他方、Ｑ、 ５ ａｍ以下
になると、Ｍｇ０−ＡＺｚ０３ＳｉＯ２系の低融点反応
生成物の層が太き（なり、耐食性が低下する。したがっ
て、大きくしすぎても小さくしすぎてもよくなく、望ま
しくは３〜Ｉｎである。In addition to the Altos-Sio□ system, there is hgo which provides residual expandability. However, if the particle size of the MgO powder exceeds 5 sulfur carbonate, expansion due to the spinelization reaction between hgo and UtO becomes locally large, which is undesirable because it destroys the brick structure. On the other hand, when Q is less than 5 am, the layer of the Mg0-AZz03SiO2-based low melting point reaction product becomes thick (and the corrosion resistance decreases. Therefore, it is not good to make it too large or too small, and it is preferable to 3 to In.
この１ｇｏ粉末を７％を超えて添加すると、耐食性が低
下する。ｑｇｏ中のＣａＯの蚕が２ｆｆｉ■％を越すと
、ＣａＯ−Ａｌ ｔ（：ｈ系の低融点物質が生成し易く
なり、耐食性の低下が生しる。If more than 7% of this 1go powder is added, corrosion resistance will decrease. When the content of CaO in qgo exceeds 2ffi%, low melting point substances of the CaO-Alt(:h system) are likely to be produced, resulting in a decrease in corrosion resistance.
以下、実施例により本発明の特徴を具体的に説明する。 Hereinafter, the features of the present invention will be specifically explained with reference to Examples.
以下の表に示す配合割合で、比較例１及び２を除きレジ
ンをバインダーとして用い、原料粉末をｌ昆練、成形し
た後、焼成した。れんが形状は２３０ｍ。Using resin as a binder except for Comparative Examples 1 and 2, the raw material powder was kneaded, molded, and fired at the blending ratio shown in the table below. The brick shape is 230m.
ｘ１１５ｎｘ８５〜６５ｍ−の鍋形状を使用した。２５
０トン取鍋のスラグライン部以外に全損した。A pot shape of x115nx85-65m was used. 25
The 0-ton ladle was completely destroyed except for the slag line.
（以下、この頁余白）
同表に示す品質及び使用実績を参照して、比較例１及び
２は、従来の焼成高アルミナれんがを示す。スラグ浸潤
に伴う構造スポーリングの発生。(Hereinafter, this page margin) Referring to the quality and usage results shown in the same table, Comparative Examples 1 and 2 show conventional fired high alumina bricks. Occurrence of structural spalling due to slag infiltration.
目地溶）Ｄの発生等に問題があり、このれんがの耐久性
はよくない。There are problems with the occurrence of joint melting) D, and the durability of this brick is not good.
比較例３と実施例１との対比から明らかなように、Ｃ７
ｎ末の食合■が０．５％以上でないとスラグ浸潤防止効
果が充分でない。また、比較例４から、焼成温度は３０
０℃以下にしなければならないことがわかる。As is clear from the comparison between Comparative Example 3 and Example 1, C7
If the n-terminus content (■) is not 0.5% or more, the effect of preventing slag infiltration will not be sufficient. Also, from Comparative Example 4, the firing temperature was 30
It is clear that the temperature must be below 0°C.
比較例５．６と実施例２．３．４との対比から明らかな
ように、残存膨張率が＋０．１４〜＋０．８％の範囲内
にないと目地ｉ８ ｂＱを防止することができない。As is clear from the comparison between Comparative Example 5.6 and Example 2.3.4, joint i8 bQ cannot be prevented unless the residual expansion coefficient is within the range of +0.14 to +0.8%.
比較例７を実施例２との対比からして、添加するＣ粉末
は０．２１龍以上でないとスラグ浸潤防止効果が充分出
てこない。Comparing Comparative Example 7 with Example 2, the C powder added must be at least 0.21 yen to have a sufficient effect of preventing slag infiltration.
比較例８．１と実ｈ＆！例６との対比から、ＳｉＣの添
加Ｉが１％以上でないと、酸化防止効果が充分でなく、
しかもれんがの寿命が大幅に低下することが判る。また
、比較例８−２と実晦例７との対比から、ＳｉＣの添加
■が５％以下でないと、酸化により生じるガラス量が多
くなり、耐スポーリング性及び耐食性が低下することが
判る。Comparative example 8.1 and actual h&! In comparison with Example 6, if the SiC addition I is not 1% or more, the antioxidant effect will not be sufficient.
Moreover, it can be seen that the life of the bricks is significantly reduced. Further, from a comparison between Comparative Example 8-2 and Practical Example 7, it can be seen that if the SiC addition (1) is not 5% or less, the amount of glass produced by oxidation increases, and the spalling resistance and corrosion resistance decrease.
比較例９．１０と実施例９．１０との対比から明らかな
ように、ＡＩ、０３含を量が７０〜９０％の範囲にない
とき、耐食性と耐スポーリング性の両方に問題がある。As is clear from the comparison between Comparative Example 9.10 and Example 9.10, when the amount of AI, 03 is not in the range of 70 to 90%, there are problems in both corrosion resistance and spalling resistance.
また、実施例１１と比較例１１との対比から明らかなよ
うに、Ｃ粉末の添加量が５％以下でないときには、Ｃピ
ックアンプの発生がみられる。また、実施例１２と比較
例１２との対比から、黒鉛粉末の添加量が４％を超すと
、熱転暮率が高くなり鉄皮赤熱の問題が発生することが
判る。実施例１３〜１７かＳｉ３Ｎａ、 ＡＩ、 Ｓｉ
、 Ａｌ−５關合金、硼珪酸ガラスも、ＳｉＣと同じく
酸化防止効果を存することが判る。Further, as is clear from the comparison between Example 11 and Comparative Example 11, when the amount of C powder added is not 5% or less, C pick amplifier occurs. Further, from a comparison between Example 12 and Comparative Example 12, it can be seen that when the amount of graphite powder added exceeds 4%, the heat transfer rate increases and the problem of iron skin red heat occurs. Examples 13 to 17 or Si3Na, AI, Si
, Al-5 alloy, and borosilicate glass are also found to have the same antioxidant effect as SiC.
ＭｇＯの添加粒度については、比較例１４．１５と実施
例１Ｂ、 １９．２０との対比から明らかなように、５
〜０．５ｍ、望ましくは３〜ＩＮであることが必要であ
る。この粒度力く５關を越えると目ｔｔ！！ｉ容１貝が
大きくなり、逆にＱ、 ５ ａｍを下回る粒度では耐食
性が低下する。As is clear from the comparison between Comparative Example 14.15 and Examples 1B and 19.20, the particle size of MgO added was 5.
~0.5m, preferably 3~IN. When this particle size exceeds 5 degrees, it's amazing! ! If the particle size is less than Q, 5 am, the corrosion resistance will decrease.
実施例２１と比較例１６との対比から、ｈｇｏ中のＣａ
Ｏ含存食合２％以下でないと耐食性が低下することが判
る。更に、実施例２２と比較例１７との対比から明らか
なように、バｇｏの添加量が７％以下でないと耐スポー
リング性が問題となる。From the comparison between Example 21 and Comparative Example 16, Ca in hgo
It can be seen that corrosion resistance deteriorates unless the O content is 2% or less. Furthermore, as is clear from the comparison between Example 22 and Comparative Example 17, spalling resistance becomes a problem unless the amount of bago added is 7% or less.
本発明の）容融合属容器内張り用れんがは、目地開きに
よるれんが剥離の現象が極めて小さく、特に、取鍋のよ
うにオープンタイプで且つ平底の構造を存する溶融金属
容器の内張りとして効果を奏する。The bricks for lining molten metal containers of the present invention have extremely little peeling of the bricks due to joint opening, and are particularly effective as linings for molten metal containers that are open-type and have a flat-bottomed structure, such as a ladle.
Claims (1)
〜９０重量％含有するＡｌ＿２Ｏ＿３−Ｃ系軽焼れんが
であって、１５００℃で３時間コークス中で熱処理した
後の残存膨縮率が＋０．１〜＋０．８％の範囲内である
ことを特徴とする溶融金属容器内張り用Ａｌ＿２Ｏ＿３
−Ｃ系軽焼れんが。 ２、Ｃ粉末が黒鉛粉末を４重量％以下含有することを特
徴とする特許請求の範囲第１項記載の溶融金属容器内張
り用Ａｌ＿２Ｏ＿３−Ｃ系軽焼れんが。 ３、粒径が０．２ｍｍ以下のＣ粉末５〜０．５重量％と
、ＳｉＣ粉末、Ｓｉ＿３Ｎ＿４粉末、金属Ａｌ粉末、金
属Ｓｉ粉末、Ａｌ−Ｓｉ合金粉末及び硼珪酸ガラス粉末
から選ばれた一種又は二種以上１〜５重量％、残部がＡ
ｌ＿２Ｏ＿３−ＳｉＯ＿２系粉末からなり、且つＡｌ＿
２Ｏ＿３含有量が７０〜９０重量％の混合原料を樹脂バ
インダを用いて混練、成形した後、３００℃以下で熱処
理することを特徴とする溶融金属容器内張り用Ａｌ＿２
Ｏ＿３−Ｃ系軽焼れんがの製造方法。 ４、含有Ａｌ＿２Ｏ＿３の中、７重量％以下を、粒径が
５〜０．５ｍｍ望ましくは３〜１ｍｍのＣａＯ含有量が
２重量％以下のＭｇＯで置換したことを特徴とする特許
請求の範囲第３項に記載の溶融金属容器内張り用Ａｌ＿
２Ｏ＿３−Ｃ系軽焼れんがの製造方法。[Claims] 1. 5 to 0.5% by weight of C powder and 70% of Al_2O_3
An Al_2O_3-C based light burnt brick containing ~90% by weight, characterized by a residual expansion/contraction rate within the range of +0.1 to +0.8% after heat treatment in coke at 1500°C for 3 hours. Al_2O_3 for lining of molten metal containers
-C series light burnt bricks. 2. The Al_2O_3-C based light-fired brick for lining a molten metal container according to claim 1, wherein the C powder contains graphite powder in an amount of 4% by weight or less. 3. 5 to 0.5% by weight of C powder with a particle size of 0.2 mm or less, and a type selected from SiC powder, Si_3N_4 powder, metal Al powder, metal Si powder, Al-Si alloy powder, and borosilicate glass powder or 1 to 5% by weight of two or more types, the balance being A
Consisting of l_2O_3-SiO_2-based powder, and Al_
Al_2 for lining a molten metal container characterized by kneading and molding a mixed raw material with a 2O_3 content of 70 to 90% by weight using a resin binder and then heat-treating the mixture at 300°C or less.
A method for producing O_3-C light fired bricks. 4. 7% by weight or less of the Al_2O_3 contained is replaced with MgO having a particle size of 5 to 0.5 mm, preferably 3 to 1 mm, and a CaO content of 2% by weight or less. Al for lining a molten metal container according to item 3
Method for producing 2O_3-C light fired bricks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61145549A JPH0774092B2 (en) | 1986-06-21 | 1986-06-21 | Al2O3-C type light brick for lining molten metal container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61145549A JPH0774092B2 (en) | 1986-06-21 | 1986-06-21 | Al2O3-C type light brick for lining molten metal container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS632853A true JPS632853A (en) | 1988-01-07 |
| JPH0774092B2 JPH0774092B2 (en) | 1995-08-09 |
Family
ID=15387747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61145549A Expired - Lifetime JPH0774092B2 (en) | 1986-06-21 | 1986-06-21 | Al2O3-C type light brick for lining molten metal container |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0774092B2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5560067A (en) * | 1978-10-28 | 1980-05-06 | Tsurumi Goseirozai Co Ltd | Refractories |
| JPS5577692A (en) * | 1978-12-06 | 1980-06-11 | Mitsubishi Heavy Ind Ltd | Application of lining material for copper alloy melting induction furnace |
-
1986
- 1986-06-21 JP JP61145549A patent/JPH0774092B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5560067A (en) * | 1978-10-28 | 1980-05-06 | Tsurumi Goseirozai Co Ltd | Refractories |
| JPS5577692A (en) * | 1978-12-06 | 1980-06-11 | Mitsubishi Heavy Ind Ltd | Application of lining material for copper alloy melting induction furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0774092B2 (en) | 1995-08-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3429486A (en) | Tar impregnated fused silica stopper head | |
| JPS632853A (en) | Al2o3-c base light burnt brick for lining molten metal vessel and manufacture | |
| US3272490A (en) | Steelmaking furnace | |
| JPS59128271A (en) | Flow in material for molten iron desilicating launder | |
| JP3833800B2 (en) | Standard refractory | |
| JPH11147758A (en) | Production of refractory material | |
| JP2000327406A (en) | Chromia-containing brick excellent in slag infiltration resistance, and molten metal vessel | |
| JP2599870B2 (en) | Amorphous refractory composition | |
| JPH03295847A (en) | Carbon-containing refractory | |
| JPS6278151A (en) | Non-burnt refractory brick for molten metal vessel | |
| JP3002296B2 (en) | Method for producing coarse aggregate blended magnesia-carbon refractory | |
| JP2000327407A (en) | High spalling resistant chromia-containing brick and molten metal vessel | |
| JPS632910B2 (en) | ||
| JPS61222960A (en) | Flow-in material for launder for treating molten iron desilication | |
| JP2536826B2 (en) | Refractory for hot metal pretreatment container | |
| JPH04342454A (en) | Magnesia-containing unburned refractory | |
| JPS6265966A (en) | High alumina unbaked briquet | |
| JPH0577626B2 (en) | ||
| JPS62132767A (en) | Carbon-containing refractories | |
| JPH0572345B2 (en) | ||
| JPS6342544B2 (en) | ||
| JPH0755865B2 (en) | Amorphous refractory containing chromium solid solution spinel clinker | |
| JPH01197370A (en) | Monolithic refractory for lining molten metal vessel | |
| JPH05238811A (en) | Alumina-magnesia-enriched spinel carbon bricks | |
| JPH0393674A (en) | Basic casting execution refractory |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |