CN1056482A - 干耐火材料组合物 - Google Patents
干耐火材料组合物 Download PDFInfo
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- CN1056482A CN1056482A CN91103289A CN91103289A CN1056482A CN 1056482 A CN1056482 A CN 1056482A CN 91103289 A CN91103289 A CN 91103289A CN 91103289 A CN91103289 A CN 91103289A CN 1056482 A CN1056482 A CN 1056482A
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- 239000000203 mixture Substances 0.000 title claims abstract description 57
- 230000000712 assembly Effects 0.000 claims abstract description 32
- 238000000429 assembly Methods 0.000 claims abstract description 32
- 238000000034 method Methods 0.000 claims abstract description 23
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 22
- 239000011230 binding agent Substances 0.000 claims abstract description 14
- 239000004927 clay Substances 0.000 claims abstract description 13
- 239000011819 refractory material Substances 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims description 17
- 239000002245 particle Substances 0.000 claims description 14
- 239000000843 powder Substances 0.000 claims description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 12
- 239000004411 aluminium Substances 0.000 claims description 11
- 239000011823 monolithic refractory Substances 0.000 claims description 8
- 229920003987 resole Polymers 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- 239000011777 magnesium Substances 0.000 claims description 7
- 239000000395 magnesium oxide Substances 0.000 claims description 7
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 7
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 7
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 7
- 229910000838 Al alloy Inorganic materials 0.000 claims description 6
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 239000004115 Sodium Silicate Substances 0.000 claims description 6
- 229910052910 alkali metal silicate Inorganic materials 0.000 claims description 6
- 229920001296 polysiloxane Polymers 0.000 claims description 6
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 6
- 229910000676 Si alloy Inorganic materials 0.000 claims description 5
- 239000010427 ball clay Substances 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 5
- -1 phosphoric acid salt compound Chemical class 0.000 claims description 5
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 4
- 229910000403 monosodium phosphate Inorganic materials 0.000 claims description 4
- 235000019799 monosodium phosphate Nutrition 0.000 claims description 4
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 claims description 4
- 235000019795 sodium metasilicate Nutrition 0.000 claims description 4
- 239000001488 sodium phosphate Substances 0.000 claims description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 3
- 229910000861 Mg alloy Inorganic materials 0.000 claims description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 3
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000292 calcium oxide Substances 0.000 claims description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims description 3
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims description 3
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims description 3
- 239000005995 Aluminium silicate Substances 0.000 claims description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 2
- 235000012211 aluminium silicate Nutrition 0.000 claims description 2
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 claims description 2
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 claims description 2
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 2
- 239000004312 hexamethylene tetramine Substances 0.000 claims description 2
- 235000010299 hexamethylene tetramine Nutrition 0.000 claims description 2
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 claims description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 2
- 235000019837 monoammonium phosphate Nutrition 0.000 claims description 2
- 239000006012 monoammonium phosphate Substances 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 claims description 2
- SLGWESQGEUXWJQ-UHFFFAOYSA-N formaldehyde;phenol Chemical compound O=C.OC1=CC=CC=C1 SLGWESQGEUXWJQ-UHFFFAOYSA-N 0.000 claims 1
- 229910052749 magnesium Inorganic materials 0.000 claims 1
- 229920001568 phenolic resin Polymers 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 abstract description 21
- 239000010959 steel Substances 0.000 abstract description 21
- 238000005058 metal casting Methods 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000002184 metal Substances 0.000 description 10
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 239000007791 liquid phase Substances 0.000 description 5
- 150000003016 phosphoric acids Chemical class 0.000 description 5
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 4
- 238000009749 continuous casting Methods 0.000 description 4
- 229910001092 metal group alloy Inorganic materials 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 238000009628 steelmaking Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- XWHPIFXRKKHEKR-UHFFFAOYSA-N iron silicon Chemical compound [Si].[Fe] XWHPIFXRKKHEKR-UHFFFAOYSA-N 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000024121 nodulation Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-N phosphoric acid Substances OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 229910001948 sodium oxide Inorganic materials 0.000 description 1
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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
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
- 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
- C04B35/63476—Phenol-formaldehyde condensation polymers
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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
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/6303—Inorganic additives
- C04B35/6316—Binders based on silicon compounds
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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
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
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- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
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- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
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- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
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- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
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- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
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- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3418—Silicon oxide, silicic acids or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
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- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9669—Resistance against chemicals, e.g. against molten glass or molten salts
- C04B2235/9676—Resistance against chemicals, e.g. against molten glass or molten salts against molten metals such as steel or aluminium
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Abstract
本文公开了耐火材料组合物,特别是用作成型一
种耐磨的,易处理的,涂有耐火内衬的用于熔融金属
铸造法的中间罐或钢水罐的单块砖衬。该组合物含
有耐火骨料、低温结合剂、至少一种中温结合剂,以及
任选的粘土。使用低温结合剂和中温结合剂使耐火
材料可在热操作中装配。
Description
本发明涉及耐火材料组合物,尤其涉及装配时不需用水的耐火材料组合物。本发明也涉及用于成形一种耐磨的、易处理的内衬的组合物。该内衬是涂覆于中间罐或钢水罐的的永久衬上。所说中间罐或钢水罐是用于熔融金属连续铸造法中的。本发明还涉及一种借助或不借助干振动而使用的耐火材料组合物。
中间罐是用于连续铸造法,如连续铸钢中大的熔融金属的中间收集容器。实际上,中间罐从运输的钢水罐接收大量的熔融金属,并排出到炉子中。在炉子中进行矿石的有效冶炼或熔融金属的精炼,然后将熔融金属转移到铸造系统。入口和出口系统控制熔融金属流流入或流出中间罐。
中间罐本身一般是钢容器,该容器衬有若干层的耐火材料组合物。一般耐火砖永久衬用作内衬以保护容器。永久衬依次涂以耐磨的、易处理的一般耐火材料组合物内衬,该耐火材料组合物曾通过喷射、喷涂、涂抹或干振动被涂敷于永久衬。在中间罐里,易处理衬层直接与熔融金属接触,保护暴露在熔融金属中的永久衬。
一般说来,有两类单块耐火材料组合物,它们被用作易处理的中间罐的内衬,为了使用这些组合物于永久衬,一些组合物需要添加液相,通常该液相为水,而另一些组合物则不需要添加液相。那些需添加液相的组合物,是通过喷射、喷涂或涂抹来使用。而那些不需添加液相的组合物被称为“干可振动者”。
干可振动者,一般通过一种或两种方法来装配,一种是用成形设备来控制涂料的厚度,而另一种则不需用成形设备。成形设备是设计成与容器内部尺寸相符的形状。该方法可用于大的容器或复杂的容器内的单块耐火材料(干可振动者)所要求的涂层厚度。而使用于不需成形设备的方法,即,所谓“无成形设备”方法,该方法包括使温度由大约1200°F至大约2000°F来预热容器。一经预热,容器完全被干的单块耐火材料充满。耐火材料可在1-5分钟固化。经过该时间之后,形成限定厚度的工作衬,而未固化的耐火材料则回收再使用。该方法通过固化时间可控制涂层厚度。该方法对给小的容器或简单的容器加内衬是有用的。
在炼钢的连续铸造方法中,有两种一般中间罐操作法,即冷操作法和热操作法。冷操作法的意思是当钢由钢水罐转送入中间罐时,中间罐是处于环境温度。热操作法包括预热中间罐至温度范围为大约1200°F至大约2500°F。因此,钢由钢水罐转送到“热”的中间罐。在连续铸造法炼钢中采用热操作方法已获得高质量的钢。由热操作可获得更高质量,这与预热中间罐时,减小的骤冷作用、减小的气体逸出和减小的紊流(这些是由于预热耐火材料内衬减小气体逸出的结果)特别有关。
习惯上,只有喷射、喷涂或涂抹的单块耐火材料用作热操作的中间罐的易处理内衬。干振动的耐火材料没有用于这方面的操作,因为在预热温度下,它们的结合系统不充足。传统的干振动结合系统包括两部分,低温结合系统,通常为有机树脂,而高温结合系统,通常为硅酸盐。为了便于预热,需要中温结合剂。本发明已完成了这种结合系统,即用磷酸盐或硅酸盐/金属粉末结合系统代替硅酸盐。所说结合系统提供给耐火材料在中温或高温时所需的强度。在这些温度下的强度必须保证干振动单块耐火材料保持在应有的位置上而起中间罐工作衬的作用。
我们发现,一种性质适合用作中间罐易处理内衬材料的耐火材料,这种耐火材料是一种显著改进的组合物。 组合物的主要成分是耐火骨料,如氧化镁、氧化铝、氧化钙、氧化硅或它们的混合物。通过添加中温结合剂将耐火骨料,低温粘合剂和粘土结合在一起。所说低温结合剂(如酚醛树脂)占大约1.0至大约5%(重);所说粘土占约0.0至大约5.0%(重);所说中温结合剂包括磷酸盐如磷酸一钠或六偏磷酸钠,或碱金属的硅酸盐和金属粉末按1∶1重量比混合的混合物,如无水的硅酸钠和硅铁金属合金粉末的混合物。
我们发现按照本发明制备的耐火材料组合物具有优良预热性。 该材料可用作干振动者。 当该材料用于保护中间罐顶部永久衬的保护层时,本发明的材料显示在预热温度(1200°F至2500°F)时具有优良的强度。该材料借助提高内衬温度和减小钢水倒入中间罐时的骤冷作用可提高钢的质量。而且本发明材料在应用时不需加水,因此可避免中间罐蒸汽喷发的危险。本发明材料也显示优良的去除结瘤性能,它可减少中间罐再使用的往返时间。本发明材料有很高的耐用年限,而且不损伤或微损伤中间罐永久衬(用该材料制成)的表面。
按照本发明,用作中间罐等的易处理的内衬的干振动的耐火材料组合物包括作为主成分的耐火骨料、大约1.0至大约5.0%(重)的低温结合剂、大约0.5至大约10.0%(重)的至少一种中温结合剂和大约0.0至大约5.0%(重)的粘土。所说耐火骨料选自氧化镁、氧化铝、氧化钙、氧化硅、氧化锆和它们的混合物;所说低温结合剂是有机树脂,更详细地说是酚醛树脂;所说中温结合剂包括磷酸盐,更详细地说是钠含量小于40.0%(重)的磷酸盐,或磷酸一铵;或碱金属硅酸盐和金属合金粉末的混合物,其重量比,最好为1∶1。后者的混合物中的硅酸盐是选自无水硅酸钠和水合硅酸钠,而金属是选自硅铁合全,铝/硅合金和镁/硅合金。硅铁合金,较好是铁含量为大约20.0至大约30.0%(重),而硅含量为大约80.0至大约70.0%(重),最好是铁含量为25.0%(重),而硅含量为75.0%(重);铝/硅合金,较好是铝含量为大约70.0至大约90.0%(重),而硅含量为大约30.0至大约10.0%(重),最好是铝含量为80.0%(重),而硅含量为20.0%(重);镁/铝合金,较好是镁含量为大约40.0至大约60.0%(重)和铝含量为大约60.0至大约40%(重),最好是镁含量为50.0%(重),铝含量也为50.0%(重)。上述粘土是选自球土、高岭土和膨润土以及它们的混合物。组合物的平衡是加耐火骨料基料至100.0%(重)。
金属合金粉末,当其颗粒尺寸为大约1至大约500微米时最有效。
本发明组合物中优选的低温结合剂酚醛树脂是六胺含量大约1.0至大约10.0%(重),平均分子量为大约4,000至10,000原子质量单位(a.m.u.)的酚甲醛聚合物。
本发明包括的耐火材料组合物的总范围是:
成分 重量百分比
耐火材料 余额
低温结合剂 1.0-5.0
中温结合剂 0.5-10.0
粘土 0.0-5.0
现已发现,为了便于所述组合物的预热,组合物中必须含有适量的中温结合剂。低温结合剂在更高温度下失去其增强强度的效力后,这种添加剂(即中温结合剂)的存在,可给耐火材料内衬提供强度。在温度低于通常预热温度时,中温结合剂形成粒子间的结合。结果成为在预热温度下可保持其形状和位置以保护永久衬的坚固材料。现已发现,在预热温度下,如果没有添加中温结合剂,耐火材料便会破碎和散裂。散裂是由于在预热温度下,耐火材料中缺少足够的分子间的结合而引起的。
现已发现,添加大约0.0至大约5.0%(重)的粘土,可增强固化的耐火内衬的表面质量,并有助于提高中温结合剂的强度。表面质量的一个方面是突出的美学效果,如果不加粘土,该效果也不会有很大的减小。现在已发现,如果给组合物提供足够数量的中温结合剂,则可省去粘土,而不会降低组合物的预热强度。
现已发现,利用干法可将作为单块内衬的本发明的耐火材料组合物高效的应用到容器表面,例如用于熔融金属铸造法中,尤其是炼钢的热操作中的中间罐或钢水罐的内表面上。所说干法包括以下步骤:将成形干耐火材料组合物的铸型器置入容器中,并使容器与成形器之间留下间隙,在间隙中倾入数量足于覆盖容器内表面的耐火材料组合物;该耐火材料组合物含有大约1.0至大约5.0%(重)低温结合剂;0.5至大约10.0%(重)的至少一种中温结合剂,以及0.0至大约5.0%(重)粘土;并以耐火骨料平衡至总量为100%(重);通过将容器温度从300°F升高到1000°F,由低温结合剂促使耐火骨料颗粒之间的粒子间结合以固化耐火材料组合物;移去铸型器,留下单块耐火材料铸件于容器的内表面上;将容器温度从大约1000°F升高至大约2500°F以预热耐火材料组合物,由中温结合剂进一步促使耐火骨料颗粒之间的粒子间结合。
实施例
借助以下的非限定实施例可以更完全地理解本发明。
按照本发明的耐火材料组合物是由以下材料来制备的:
耐火材料-硬烧的氧化镁(MgO);
低温结合剂-酚醛树脂;
中温结合剂-型#1,是组合物中的磷酸盐,该磷酸盐中氧化钠含量小于40.0%(重);型#2,是重量比为1∶1的碱金属硅酸盐和粉末状的金属合金的混合物。
粘土-风选球土。
实施例1
试样的制备-固化
首先,将各成分置于行星叶片式的电拌合机中充分地干混合1-5分钟。将混合物注入钢模中制成标准的7″×1″×1″条钢。将条钢整平制成光滑的表面。将条钢加热至350°F,保温90分钟。
实施例2
实施例的配方
成分 重量百分比
ⅠA ⅡA ⅢA
氧化镁/氧化硅/氧化铝 余额 余额 余额
风选球土 1.0 1.0 0.0
酚醛树脂 3.0 4.0 2.5
磷酸一钠 2.5 - -
六偏磷酸钠 - 2.0 -
磷酸一铵 - - 6.0
所有组合物均按实施例1的方法制备。
实施例3
实施例的配方
成分 重量百分比
ⅠB ⅡB ⅢB
氧化镁/氧化硅/氧化铝 余额 余额 余额
风选球土 1.0 0.0 2.0
酚醛树脂 3.0 3.0 4.0
无水硅酸钠 1.5 - 2.0
水合硅酸钠 - 2.0 -
硅铁粉末,150目 1.5 - -
铝/硅粉末 - 2.0 2.0
所有组合物均按实施例1的方法制备。
实施例4
耐火材料组合物在预热温度下的强度的实验室质量值
按实施例1制备的试样纵长地切割成三份。这些试样焙烧至1000°F、1500°F或2000°F,并保温1小时。保温期终止后,试样以金属棒研磨,并在强度方面进行质量上的鉴定。鉴定尺度规定如下:
级别 鉴定标准
0 在温度下,试样不保持形状。
1 试样保持形状,但一磨研就碎散。
2 研磨结果,试样有1/2″深被削减。
3 研磨结果,试样有1/4″深被削减。
4 研磨结果,试样有1/8″深被削减。
5 研磨结果,试样没有被削减。
等级3、4和5被评为可用于中间罐的组合物。
实施例5
实施例2和3的组合物已按实施例4进行测定。结果示于表1中。
表1
组合物 级别
1000°F 1500°F 2000°F
ⅠA 3 4 5
ⅡA 2.5 3 4
ⅢA 3 4 4
ⅠB 3.5 4 5
ⅡB 3 3.5 4
ⅢB 3.5 4 4.5
实施例6
组合物ⅠA的现场鉴定
组合物ⅠA已在实际的中间罐应用中进行了鉴定。预热温度为大约2100°F至大约2600°F。将组合物ⅠA排列在连铸机上。材料可容易地干净地去除结瘤。中间罐的永久衬没有损伤或损坏的情形发生。
实施例7
组合物ⅡA的现场鉴定
组合物ⅡA已在实际的中间罐应用中进行了鉴定。预热温度为大约1500°F至大约1800°F。使组合物ⅡA经受预热,并排列在连铸机上。材料可容易地、干净地去除结瘤。中间罐永久衬显示无磨损迹象。
实施例8
组合物ⅢA的现场鉴定
组合物ⅢA作为浇注桶里易处理的内衬,已作了鉴定。材料用无成形设备的方法装配。材料装配成功后,钢水罐预热至大约2500°F。将五炉钢通过钢水罐进行浇注。内衬可容易地和干净地去除结瘤。当与由没有衬以组合物ⅢA耐火材料内衬的钢水罐制成的铸件相比时,本发明铸件显示降低了非金属含量。
Claims (11)
1、一种用作干耐火材料的耐火材料组合物,该组合物是以选自氧化镁、氧化铝、氧化钙、氧化硅、氧化锆和它们的混合物的耐火骨料为基础,该耐火材料组合物的特征在于包括
大约1.0至大约5.0%(重)的低温结合剂酚醛树脂;
大约0.5至大约10.0%(重)的至少一种中温结合剂,该结合剂选自钠含量小于大约40.0%(重)的含磷酸盐化合物,碱金属硅酸盐和金属粉末的混合物,该混合物中至少有一种所说的含磷酸盐化合物和所说含硅酸盐化合物存在,而存在于组合物中的所说中温结合剂不大于10.0%(重);
组合物是由所说的耐火骨料平衡至总量为100.0%(重)。
2、根据权利要求1的耐火材料组合物,其中酚醛树脂是酚甲醛聚合物。
3、根据权利要求1的耐火材料组合物,其中含磷酸盐化合物是选自磷酸一钠、六偏磷酸钠和磷酸一铵;碱金属硅酸盐是选自无水硅酸钠和水合硅酸钠;而金属粉末是选自硅铁合金、铝/硅合金和镁/铝合金。
4、根据权利要求1的耐火材料组合物,其进一步特征在于碱金属硅酸盐和金属粉末是以等重量存在于混合物中,而金属粉末的颗粒尺寸范围为大约1微米至大约500微米。
5、根据权利要求2的耐火材料组合物,其中酚甲醛聚合物的进一步特征在于六胺含量为大约1.0至大约10.0%(重),而平均分子量为大约4,000至大约10,000原子质量单位(a.m.u.)。
6、根据权利要求3的耐火材料组合物,其中硅铁合金的铁含量为大约20.0至大约30.0%(重),硅含量为大约80.0%至大约70.0%(重);
铝/硅合金金属粉末的铝含量为大约70.0至大约90.0%(重),硅含量为大约30.0%至大约10.0%(重);
镁/铝金属粉末的镁含量为大约40.0至大约60.0%(重),铝含量为大约60.0至大约40.0%(重)。
7、根据权利要求1的耐火材料组合物,其进一步特征在于含量为0.0至大约5.0%(重)的粘土是选自球土、高岭土和膨润土,以及它们的混合物。
8、根据权利要求1的耐火材料组合物,其中低温结合剂在温度范围为大约300°F至大约1000°F下促使耐火材料的颗粒之间形成粒子间结合。
中温结合剂在温度范围为大约1000°F至大约2500°F,促使耐火材料颗粒之间形成粒子间结合。
9、根据权利要求1的耐火材料组合物,其进一步特征在于可振动。
10、一种用作干耐火材料的组合物,该组合物包括:
大约2.5至大约3.5%(重)酚甲醛;
大约2.5至大约3.5%(重)磷酸一钠;
大约2.5至大约3.5%(重)无水硅酸钠和硅铁合金金属粉末的50/50混合物;
0.0至大约5.0%(重)粘土。
11、一种将单块耐火材料内衬应用到热操作容器(如中间罐等)的内表面的干法,其特征在于包括以下步骤:
a)将成形耐火材料组合物的铸型器置入容器中,并使所说容器与所说成形器之间留下间隙,
b)在间隙中倾入数量足于覆盖容器内表面的耐火材料组合物,所说耐火材料组合物含有大约1.0至大约5.0%(重)低温结合剂;0.5至大约10.0%(重)的至少一种中温结合剂,以及0.0至大约5.0%(重)粘土;并以耐火骨料平衡至总量为100%(重);
c)将容器温度从300°F升高到1000°F,由低温结合剂促使耐火骨料颗粒之间的粒子间结合以固化耐火材料组合物;
d)移去铸型器,留下单块耐火材料铸件于容器的内表面上;
e)将容器温度从大约1000°F升高至大约2500°F以预热耐火材料组合物,并由中温结合剂进一步促使耐火骨料颗粒之间的粒子间结合。
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CN1049645C (zh) * | 1993-09-22 | 2000-02-23 | 冶金工业部洛阳耐火材料研究院 | 常温固化树脂结合不定形耐火材料的生产方法 |
CN101056948B (zh) * | 2004-11-19 | 2011-04-13 | 松下电器产业株式会社 | 难燃性树脂组合物及其制造方法以及其成形方法 |
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CN1078224A (zh) * | 1992-03-06 | 1993-11-10 | 特殊耐火材料公司 | 可振动的耐火材料组合物 |
GB9226662D0 (en) * | 1992-12-22 | 1993-02-17 | Foseco Int | Refractory compositions |
WO1994018139A1 (en) * | 1993-02-02 | 1994-08-18 | Lanxide Technology Company, Lp | Novel methods for making preforms for composite formation processes |
US5418198A (en) * | 1993-08-23 | 1995-05-23 | Magneco/Metrel, Inc. | Pelletizable gunning composition |
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JP3046251B2 (ja) * | 1996-10-15 | 2000-05-29 | 大光炉材株式会社 | 緻密質流し込み耐火組成物の湿式吹付け施工方法 |
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US6893992B2 (en) * | 2003-02-07 | 2005-05-17 | Allied Mineral Products, Inc | Crack-resistant insulating dry refractory |
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US7628951B1 (en) * | 2005-10-21 | 2009-12-08 | Ceramatec, Inc. | Process for making ceramic insulation |
US7611666B2 (en) * | 2008-02-07 | 2009-11-03 | North American Refractories Company | Tundish dry vibratable form |
US9422195B1 (en) | 2012-09-19 | 2016-08-23 | Universal Refractories, Inc. | Magnesium oxide castable refractory foundry ladle liners |
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JP6358736B2 (ja) * | 2014-03-19 | 2018-07-18 | 興亜耐火工業株式会社 | ドライコート材 |
JP6303792B2 (ja) * | 2014-05-14 | 2018-04-04 | 品川リフラクトリーズ株式会社 | ランスパイプ用流し込み耐火物 |
US9441090B1 (en) | 2015-03-12 | 2016-09-13 | Chevron Phillips Chemical Company Lp | Methods for controlling hardness of styrene-butadiene block copolymers |
TWI837098B (zh) * | 2017-08-29 | 2024-04-01 | 美商維蘇威美國公司 | 耐火襯裡結構及冶金容器 |
CN113526967B (zh) * | 2021-07-09 | 2023-08-15 | 中冶武汉冶金建筑研究院有限公司 | 一种废旧耐材为主材的铁沟浇注料 |
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JPS5337884B2 (zh) * | 1972-07-06 | 1978-10-12 | ||
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US4508835A (en) * | 1983-06-08 | 1985-04-02 | Allied Corporation | Vibratable refractory mix and binder therefor |
-
1991
- 1991-01-16 TW TW080100332A patent/TW265327B/zh active
- 1991-04-12 ES ES91908687T patent/ES2091327T3/es not_active Expired - Lifetime
- 1991-04-12 AU AU77515/91A patent/AU7751591A/en not_active Abandoned
- 1991-04-12 CA CA2081108A patent/CA2081108A1/en not_active Abandoned
- 1991-04-12 JP JP3508367A patent/JP2567770B2/ja not_active Expired - Fee Related
- 1991-04-12 BR BR919106442A patent/BR9106442A/pt not_active IP Right Cessation
- 1991-04-12 WO PCT/US1991/002543 patent/WO1991017969A1/en active IP Right Grant
- 1991-04-12 DE DE69120413T patent/DE69120413T2/de not_active Expired - Fee Related
- 1991-04-12 EP EP91908687A patent/EP0533689B1/en not_active Expired - Lifetime
- 1991-04-12 KR KR1019920702829A patent/KR0156553B1/ko not_active IP Right Cessation
- 1991-05-13 ZA ZA913592A patent/ZA913592B/xx unknown
- 1991-05-13 IE IE163391A patent/IE911633A1/en unknown
- 1991-05-13 MX MX025760A patent/MX173792B/es unknown
- 1991-05-13 CN CN91103289A patent/CN1056482A/zh active Pending
-
1992
- 1992-05-04 US US07/878,142 patent/US5284808A/en not_active Expired - Fee Related
-
1995
- 1995-03-29 AU AU16169/95A patent/AU678889B2/en not_active Ceased
-
1998
- 1998-06-26 HK HK98106949A patent/HK1007733A1/xx not_active IP Right Cessation
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1049645C (zh) * | 1993-09-22 | 2000-02-23 | 冶金工业部洛阳耐火材料研究院 | 常温固化树脂结合不定形耐火材料的生产方法 |
CN101056948B (zh) * | 2004-11-19 | 2011-04-13 | 松下电器产业株式会社 | 难燃性树脂组合物及其制造方法以及其成形方法 |
CN101316666B (zh) * | 2005-09-07 | 2011-07-06 | Ks铝技术有限公司 | 用于浇铸模具中的陶瓷表面的保护层 |
CN101500729B (zh) * | 2006-03-07 | 2011-08-03 | Ks铝技术有限公司 | 用于非铁金属浇铸的脱模层 |
CN109689592A (zh) * | 2016-06-30 | 2019-04-26 | 凯得力法国公司 | 干颗粒耐火组合物用烧结剂 |
US11608300B2 (en) | 2016-06-30 | 2023-03-21 | Calderys France S.A.S. | Sintering agent for dry particulate refractory composition |
CN107881598A (zh) * | 2017-11-13 | 2018-04-06 | 蒋艳玲 | 一种耐火纤维材料及其制备方法 |
CN109231968A (zh) * | 2018-09-17 | 2019-01-18 | 武汉钢铁有限公司 | 连铸中间包工作衬用干式料及其制备方法 |
Also Published As
Publication number | Publication date |
---|---|
HK1007733A1 (en) | 1999-04-23 |
BR9106442A (pt) | 1993-05-18 |
JP2567770B2 (ja) | 1996-12-25 |
WO1991017969A1 (en) | 1991-11-28 |
KR0156553B1 (ko) | 1999-02-18 |
DE69120413T2 (de) | 1997-01-23 |
TW265327B (zh) | 1995-12-11 |
AU1616995A (en) | 1995-07-13 |
US5284808A (en) | 1994-02-08 |
AU7751591A (en) | 1991-12-10 |
JPH05505589A (ja) | 1993-08-19 |
ES2091327T3 (es) | 1996-11-01 |
CA2081108A1 (en) | 1991-11-28 |
EP0533689B1 (en) | 1996-06-19 |
MX173792B (es) | 1994-03-25 |
DE69120413D1 (de) | 1996-07-25 |
IE911633A1 (en) | 1991-11-20 |
EP0533689A1 (en) | 1993-03-31 |
ZA913592B (en) | 1992-12-30 |
AU678889B2 (en) | 1997-06-12 |
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