TW200911726A - Baking repairing material - Google Patents

Baking repairing material Download PDF

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Publication number
TW200911726A
TW200911726A TW097113404A TW97113404A TW200911726A TW 200911726 A TW200911726 A TW 200911726A TW 097113404 A TW097113404 A TW 097113404A TW 97113404 A TW97113404 A TW 97113404A TW 200911726 A TW200911726 A TW 200911726A
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TW
Taiwan
Prior art keywords
baking
weight
iron powder
repairing material
representative
Prior art date
Application number
TW097113404A
Other languages
English (en)
Other versions
TWI516463B (zh
Inventor
Makoto Nanba
Hisaharu Sasaki
Kiyoyuki Komatsubara
Takaaki Koyama
Original Assignee
Shinagawa Refractories Co
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Publication of TW200911726A publication Critical patent/TW200911726A/zh
Application granted granted Critical
Publication of TWI516463B publication Critical patent/TWI516463B/zh

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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/44—Refractory linings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/10—Supplying or treating molten metal
    • 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
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/013—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics containing carbon
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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    • C04B35/03—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite
    • C04B35/04—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite based on magnesium oxide
    • C04B35/043—Refractories from grain sized mixtures
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    • C04B35/632—Organic additives
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    • C04B35/634—Polymers
    • C04B35/63448—Polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B35/63472—Condensation polymers of aldehydes or ketones
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    • C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/04—Blast furnaces with special refractories
    • C21B7/06—Linings for furnaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/16—Making or repairing linings increasing the durability of linings or breaking away linings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/16—Making or repairing linings increasing the durability of linings or breaking away linings
    • F27D1/1626—Making linings by compacting a refractory mass in the space defined by a backing mould or pattern and the furnace wall
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  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
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  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)

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200911726 九、發明說明： 【發明所屬之技術領域】 烤：:―熱修補各種精練爐物等之烘 本申請案基於2 0 〇 7年5月i 8曰所申請之 願2〇〇7-133444)，對其全文進行引用。 J申明（特 另二本文所引用之參照作為全文之一部分收錄。 【先前技術】 作為轉爐、洗桶等㈣金屬容器之熱修補方法 ::::補材料投入爐内後進行洪烤，除了材料之輸送： 二吊容易外’且施工非常簡便，無需如濟注修補般在 月，】要進行混練步驟，只需將材料投入爐中，利用 餘熱供烤即可，因此赫廇、、多庙田 . 此被廣泛應用。粉末狀之烘烤修補材料 體分為水系與非水系兩種，水系材料如專利文獻】中所 揭7F之使用含結晶水之鱗酸鹽或石夕酸鹽之供烤修補材料。 ί. 使用焦油或瀝青等之非水系烘烤修補材料，已知其耐用 性比水系供烤修補材料良好，但有必須延長烘烤時間之缺 點。因此’於專利文獻2中揭示了 一種通過添加Mg粉末來 縮短烘烤時間之方法，但Mg粉末不僅價格高使經濟性降 低’且具有粉塵爆炸之高危險性，製造時對於原料處理需 非常小心等問題。 另一方面，專利文獻3中揭示有添加鐵粉與此粉末來改 善非水系烘烤修補材料之接著性之技術，鐵粉具有在伊烤 時沉降於材料内部，對接著面進行吸熱之作用，以改盖烘 130595.doc 200911726 烤修補材料之接著性。但實上，^ ^ ^ ^ 效果度接者，由於在再㈣（再加熱）爐 融鐵之膜存在㈣烤修㈣料與 會作為落 降俏蛀簞士 显王 < 间（钱耆面），故會 - ，反而易產生剝離，無法提高耐用性。 專利文獻1:曰本公開專利特開平2-26874號公報 專利文獻2:曰本公開專利特開平u_24〇77i號公報 專：文獻3 :曰本公開專利特開平11 -278948號公報 【發明内容】 ^報 發明所欲解決之問題 :近之轉爐 '澆桶等熔融金屬容器多於内部被 :火物’於此等之熱修補時從與母材 = 是採用藉由熱形成碳鍵之非水系材二：= 間長之缺點，存在修補時間不長時就了:又入後供烤時 解決問題之技術Μ ^無法使用之問題。
U 本發明係提供—種粉古此々4 保持施工上之簡便性：非水系烘烤修補材料，其可 且經濟性與耐用性亦優良。 m烤化間， p本發明之烘烤修補材料，， 劑佔5〜3〇重量％，鐵粉佔卜^曰由/成碳鍵之點合 材。 禾違5重ϊ%，其餘為耐火骨 進而，在本發明中，相對 量％，含有、，A …形成碳鍵之粘合劑i重 各有机動化促進劑Ojy重 直 之枯合劑與流動化促進劑之 #由熱形成碳鍵 °汁量為5〜30重量％，鐵粉為 130595.doc 200911726 1未達5重量％ ’其餘為财火骨料之情形， 的效果。即，為賦予流動性，宜於不助長鐵粉沉降，^阻 礙其效果之範圍内添加流動化促進劑。 修補之熔融金屬容器之爐壁溫度至少在7〇(TC以上，本 發明之烘烤修補材料投入爐内時，粉粒狀之枯合劑藉由爐 =熱而炼融，修補材料整體成為流動狀態，填充至被修 ;之微細部分，同時耐火材料密填充，再因粘合劑之作 用，烘烤修補材料硬化後形成碳鍵。 ί 。本發明之烘烤材料gj添加有鐵粉可增加材料之熱傳導 率’故藉由熱產生流動而受熱時，可使材料溫度快速上 二：進粘合劑之碳化’大幅縮短硬化時間。鐵粉在流動 J然因比重與耐火骨材不同而分離沉降，但因限定添 加量，故可降低對接著面之不良影響。 發明之效果 本發明之烘烤修補材料因在供烤時可將爐熱有效傳達至 ^料’故可縮短供烤時間。另，因在加熱㈣無損接著 力:故不易發生剝離非常耐用。本發明之烘烤修補材料兼 與良好修補效果，可大幅提高炼融金屬容器等爐 之運轉率並延長其使用壽命。 f實施方式】 =明所使用之耐火骨材並無特別限定，根據被修補處 斤使用之母材選擇適當材料即可。比如，二氧化石夕、錯石 等酸性氧化物；氧_、氧化鉻等中性氧化物；氧化鎮、 氧㈣ '白雲石等鹼性氧化物，·碳材料、碳切、氮化 130595.doc 200911726 等非氧化物；各種磚屑等之1種或2種以上。此等耐火骨材 宜將其粒度適當調整成粗粒、_粒、微粒1使烘烤材料 組織成為密填充組織。
本發明所使用之鐵粉中亦含有鐵合金，卜純度並無特別 限定’從經濟性觀點宜使用低價物。相對於供烤修補材料 。〇重1/。，鐵粉之使用量為1〜未達5重量％。若未達1重量 /〇’則無法充分獲得本發明之效果(提高材料之熱傳導 率），無法縮短硬化時間。而若為5重量％以上，則在流動 化時鐵叙會’儿降於修補面(接著面），於烘烤修補後啟動爐 時生成於接著面上之溶融鐵之膜變多，易產生㈣，並不 另本發明所使用之鐵粉之粒徑宜細小，若粒徑粗大 則在流動化時鐵粉將^降，並不佳。考慮從市場購入之 難易度，宜採用最大粒徑Μ職以下之鐵粉。只要在可低 價：入之範圍内粒徑為細小即可對粒徑之下限並無特別 定3雖然使用作為抗氧化劑被廣泛認知之銘及熱傳 導率較高之銅等亦可蔣古Λ, π Τ徒问材料之熱傳導率，但因價高而使 經濟性降低，故並不佳。 /、人作為藉由熱形成碳鍵之魅合劑，可採用通常作為 有機系枯σ劑使用之粉粒狀遞青或苯紛樹脂。該等形成碳 枯口劑之使用量，係相對烘烤修補材料⑽重量％為 5’重量。/。’若使用量不到5重量％，則碳鍵無法充分形 成成為強度及接著性低劣之施工體，若超過重量％， 則成為氣孔率較大 流動化促進劑係 之施工體，耐蝕性下降。 用於促進此等枯合劑之、熔融軟化後之流 130595.doc 200911726 動性，賦予供烤修補材料大之修補 p{基苯盼類、内酿㈣心熱面積’可從 門醒胺類、雙紛、聯笨、二 蠟等中選擇1種或2種以上進行使用。 蠟、 使用流動化促進劑之情形’藉由熱形 流動化促進劑之合計量係5〜3〇重量％，且流動化Hi與 對於形成碳鍵之枯合劑丨^ ，目 口 W 1垔里/〇為O.lq重量％， 〇_1〜0.6重量％。若低於〇丨 兮里斗如 則無法獲得促進流動之 右超過1重量％，則易降低洪烤修補材料受執下之 枯性，且鐵粉易沉降於修補面（接著面），故並不佳。',、、之 實施例 以下’以本發明之實施例之本發明品與比較例為例 t發明進行具體說明，但本發明並不限定於以下本發明 品0 表I係顯示本發明之烘烤修補材料之實施例及比較例。 ί 擴展性評價：將表！所示之調配_ g投入保持於⑽代 之爐内之可鑄板上’熄火後從爐内取出可鑄板，測量 材料所擴展直徑之平均值作為擴展性。 ’、 硬化時間評價：硬化時間係於保持於刪t之氧化録碑 上放置内徑53醜><高4〇顏之環狀金屬框，投入試料細 g ’測定至全體硬化所需時間。試料硬化後，立即藉由剪 切接著強度測定機測定接著強度。 外觀氣孔率評價：於保持於刪1之爐内由氧化鎂磚所 包圍之區域中投人試料1 kg，硬化後，測定該硬化體之外 觀氣孔率。 130595.doc •10· 200911726 實機試驗ch數評價：實機試驗係在内貼MgO-C質磚之 300t轉爐之熱修補上使用600 kg之烘烤修補材料，將烘烤 修補材料之殘存面積成為修補後之20%以下之使用次數評 價作為耐用性。 本發明之實施例，硬化時間短且實機試驗中亦顯示良好 * 的耐用性。比較例1與比較例2因接著強度低、硬化體外觀 * 氣孔率高，故未進行實機試驗。比較例3與比較例4雖然硬 化時間短 > 但實機試驗之耐用性不良。 C [表 1] 實施例 比較例 1 2 3 4 5 2 3 4 耐火骨材 (重量％) 氧化鎂骨材 8-1 mm 42 40 40 40 35 50 29.5 32 38 氧化鎮骨料 1 mm以下 41 38 38 43 33 46 25 34 35 粘合劑 (重量％) 瀝青粉末(軟 化點110°C) 8 15 20 10 25 4 20 18 熱可塑性粉末 苯酚樹脂 5 20 流動化促進劑 (重量％) 雙酚A 3 3 P-烷基苯酚 (熔點84°〇 5 25 鐵粉 (重量％) 鐵粉平均粒徑 3 mm 16 7 鐵粉平均粒徑 1 mm 4 2 4 0.5 鐵粉平均粒徑 0.5 mm 4 2 試驗結果 擴展性(mm) 215 235 252 230 263 142 295 240 260 硬化時間 (分鐘） 3 3 4 3 5 3 15 6 6 接著強度 (MPa) 3.8 4.6 5.8 4.2 6.2 0.2 0.9 3,6 2.0 外觀氣孔率 (%) 28.5 25.4 25.3 24 29.2 33.8 38.4 25.6 24.5 實機耐用 ch數 13 15 18 14 16 - - 3 6
-11 - 130595.doc 200911726 對本發明參照特定態樣進行了詳細說明，但熟悉此技藝 之人當可明白在不脫離本發明之精神與範圍内可進行各種 變更及修正。 f ί 130595.doc -12-

Claims (1)

  1. 200911726 « 十、申請專利範圍： 火、烤修補材料，其係藉由熱形成碳鍵之粘合劑佔 5 〜3 〇 -已 〇/ ° ’鐵粉佔1〜未達5重量％，其餘為耐火骨材。 •如請求項1之烘烤修補材料，其係相對於藉由熱形成碳 鍵之粘合劑1重量％ ,流動化促進劑為0.1〜1重量。/。，且藉 ' 由’、、、形成碳鍵之粘合劑與流動化促進劑之合計量為5〜3 0 • 量/()，鐵粉為1〜未達5重量％，其餘為耐火骨材。
    ί I30595.doc 200911726 七、指定代表圖： (一) 本案指定代表圖為：（無） (二) 本代表圖之元件符號簡單說明： 八、本案若有化學式時，請揭示最能顯示發明特徵的化學式： (無）
    130595.doc
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