CN116283248A - 一种再熔铝炉用致密复相砖及其制造方法 - Google Patents
一种再熔铝炉用致密复相砖及其制造方法 Download PDFInfo
- Publication number
- CN116283248A CN116283248A CN202310053684.0A CN202310053684A CN116283248A CN 116283248 A CN116283248 A CN 116283248A CN 202310053684 A CN202310053684 A CN 202310053684A CN 116283248 A CN116283248 A CN 116283248A
- Authority
- CN
- China
- Prior art keywords
- parts
- alumina
- brick
- furnace
- silicon carbide
- 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.)
- Pending
Links
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 52
- 239000011449 brick Substances 0.000 title claims abstract description 49
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 239000002131 composite material Substances 0.000 title claims description 9
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 238000002156 mixing Methods 0.000 claims abstract description 20
- 239000002994 raw material Substances 0.000 claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- 238000003723 Smelting Methods 0.000 claims abstract description 8
- 238000003825 pressing Methods 0.000 claims abstract description 8
- 239000011819 refractory material Substances 0.000 claims abstract description 6
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 238000005303 weighing Methods 0.000 claims abstract description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 66
- 239000002245 particle Substances 0.000 claims description 36
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 30
- 239000000843 powder Substances 0.000 claims description 27
- 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 claims description 16
- 229910052863 mullite Inorganic materials 0.000 claims description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 13
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 13
- 239000004927 clay Substances 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 11
- 229910021487 silica fume Inorganic materials 0.000 claims description 11
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 229910052710 silicon Inorganic materials 0.000 claims description 7
- 239000010703 silicon Substances 0.000 claims description 7
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 6
- 229920001353 Dextrin Polymers 0.000 claims description 6
- 239000004375 Dextrin Substances 0.000 claims description 6
- 229910021418 black silicon Inorganic materials 0.000 claims description 6
- 239000000292 calcium oxide Substances 0.000 claims description 6
- 235000019425 dextrin Nutrition 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000000428 dust Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 235000012255 calcium oxide Nutrition 0.000 claims 2
- 239000003054 catalyst Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 26
- 230000008595 infiltration Effects 0.000 abstract description 5
- 238000001764 infiltration Methods 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 230000035939 shock Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000000155 melt Substances 0.000 abstract description 2
- 239000012856 weighed raw material Substances 0.000 abstract 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 229910052593 corundum Inorganic materials 0.000 description 2
- 239000010431 corundum Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 2
- 229910001948 sodium oxide Inorganic materials 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000289 melt material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
- 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
- C04B35/10—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 aluminium oxide
- C04B35/101—Refractories from grain sized mixtures
- C04B35/103—Refractories from grain sized mixtures containing non-oxide refractory materials, e.g. carbon
-
- 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
- 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
- C04B2235/34—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
- C04B2235/3427—Silicates other than clay, e.g. water glass
- C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
-
- 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
- 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
- C04B2235/34—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
- C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
-
- 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
- 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
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3817—Carbides
- C04B2235/3826—Silicon carbides
-
- 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
- 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
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/428—Silicon
-
- 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
- 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
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5427—Particle size related information expressed by the size of the particles or aggregates thereof millimeter or submillimeter sized, i.e. larger than 0,1 mm
-
- 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
- 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
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5436—Particle size related information expressed by the size of the particles or aggregates thereof micrometer sized, i.e. from 1 to 100 micron
-
- 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
- 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
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5445—Particle size related information expressed by the size of the particles or aggregates thereof submicron sized, i.e. from 0,1 to 1 micron
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/602—Making the green bodies or pre-forms by moulding
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6562—Heating rate
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6567—Treatment time
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/74—Physical characteristics
- C04B2235/77—Density
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
本发明涉及一种再熔铝炉用致密复相砖的制造方法,包括步骤:称取原料;将称取的原料送入混炼机进行混合,得到混合后原料;在再熔铝炉用致密复相砖模内倒入混合后原料,电动程控压砖机压制得到压制成型的砖块并出砖;高温隧道窑按照设定的升温制度逐步升温至对砖块热处理,再冷却。本发明的有益效果是:本发明制备得到的致密复相砖能降低整体材料的显气孔率,减少熔液的渗入通道,能有效降低铝液的渗透,降低材料与熔体的润湿性;本发明采用复相材料配伍,能增加熔炉内衬耐火材料的抗热震性能和抗冲刷性能,减弱深层化学反应和物理渗透,提高炉衬自身强度,减弱机械损坏;可以延长再熔铝炉的耐火内衬材料使用寿命至5年左右。
Description
技术领域
本发明属于耐火砖领域,尤其涉及一种再熔铝炉用致密复相砖及其制造方法。
背景技术
再熔铝炉是用于加热熔炼废弃回收铝,得到铝液的熔炉;再熔铝炉的工作温度一般为700℃~1100℃;从使用温度来看,粘土质、莫来石质、高铝质定形或不定形耐火制品均可作为再熔铝炉的耐火内衬材料。
但是,再熔铝炉熔炼工况中会发生耐火内衬材料损毁,耐火内衬材料的损毁方式有以下几种:
1、表面化学反应:废弃回收铝经过加热,产生的高温铝液中的极为活泼的铝及镁等元素,易和耐火内衬材料中的二氧化硅发生化学反应,形成单质硅,破坏、剥落和侵蚀耐火材料结构,逐渐减薄耐火内衬材料;
2、深层化学反应:在再熔铝炉的工作温度下,一些合金元素(如镁等元素)易沿耐火材料气孔深入到耐火内衬材料内部,倒置耐火内衬材料疏松、体积膨胀并产生裂纹,进一步加速铝合金熔液对耐火内衬材料的渗透和侵蚀;
3、物理渗透:低粘度的铝合金熔体渗入到耐火内衬材料的孔隙后,随着炉料的加热、保温、倾倒及炉衬循环使用,耐火内衬材料遭遇急冷急热,不断发生膨胀和收缩,最终导致耐火内衬材料剥落;
4、机械损坏:废弃回收铝一般采用炉料压制成块的方式入炉熔炼,入炉熔炼过程易撞击和摩擦耐火内衬材料;另外,再熔铝炉工作时,空气、铝合金熔液以及耐火材料形成的气-液-固三相界面处易形成刚玉瘤,刚玉瘤与耐火内衬材料结合紧密;采用机械、熔剂或人工等方法清除时,会对耐火内衬材料的结构造成一定程度的破坏;
以上几种耐火内衬材料的损毁方式,加上再熔铝炉通常采用间歇式的操作方式,导致通常情况下再熔炉内衬耐火材料使用寿命仅约1年,再熔铝炉的使用寿命较短,成本较高。
发明内容
本发明针对现有再熔铝炉耐火内衬材料损毁的原因,提供一种再熔铝炉用致密复相砖及其制造方法。
这种再熔铝炉用致密复相砖,以质量份数计,由以下原料制成:低铝莫来石颗粒25~35份、均化矾土颗粒25~35份、碳化硅细粉和碳化硅超微粉混合物5~10份、活性氧化铝微粉5~10份、煅烧氧化铝粉5~10份、粘土1~10份、微硅粉1~3份和糊***1~3份;
低铝莫来石颗粒中氧化铝的化学含量为45%;
均化矾土颗粒中氧化铝的化学含量为60%;
以质量份数计,5~10份碳化硅细粉和碳化硅超微粉混合物,由2~5份硅含量为98%的黑碳化硅细粉与2~5份的粒度为2-10微米的黑碳化硅微粉混合而成;
粘土为粒径为200目的广西维罗泥;
微硅粉为二氧化硅含量为97%的金属硅冶炼的炉灰收集活性微粉;
糊***为黄糊精与水按1:10的比例混合的液体。
作为优选,活性氧化铝微粉为粒径D50为0.5-1微米的轻烧活性氧化铝。
作为优选,轻烧活性氧化铝中氧化铝含量典型值为99.5%、氧化纳含量典型值为0.14%、氧化钙含量典型值为0.02%、氧化硅含量典型值为0.03%、氧化钙含量典型值为0.1%、比表面积典型值为5.1M2/g、粒径D50为0.8ųm。
作为优选,煅烧氧化铝粉为粒径D50为3-5微米的重烧氧化铝。
作为优选,低铝莫来石颗的粒度为5-0mm;均化矾土颗粒的粒度为5-0mm。
这种再熔铝炉用致密复相砖的制造方法,包括以下步骤:
步骤1、以质量份数计,称取粒度为5-0mm的低铝莫来石颗粒25~35份、粒度为5-0mm的均化矾土颗粒25~35份、碳化硅细粉和碳化硅超微粉混合物5~10份、活性氧化铝微粉5~10份、煅烧氧化铝粉5~10份、粘土1~10份、微硅粉1~3份和糊***1~3份;
步骤2、将经步骤1称取的原料送入混炼机进行混合,得到混合后原料;
步骤3、在再熔铝炉用致密复相砖模内倒入设定重量的混合后原料,电动程控压砖机压制得到压制成型的砖块并出砖;
步骤4、将经步骤3压制成型的砖块送入高温隧道窑,高温隧道窑按照设定的升温制度逐步升温至设定温度进行热处理,再进行冷却,得到再熔铝炉用致密复相砖。
作为优选,步骤2中混炼机为耐火材料行星式强制混合机;步骤2中混炼机将经步骤1称取的原料进行混合时,先加入低铝莫来石颗粒、均化矾土颗粒、碳化硅细粉和碳化硅超微粉混合物、活性氧化铝微粉、煅烧氧化铝粉、粘土和微硅粉先混合3分钟,再倒入糊***湿混25分钟;将混炼机的混合总时长控制在28~30分钟。
作为优选,步骤3中电动程控压砖机采用型号为630吨的压机。
作为优选,步骤4中高温隧道窑的升温制度为100米高温隧道窑内按每2小时推1车的速率逐步升温至1520℃。
本发明的有益效果是:
本发明选择氧化铁等杂质含量低,富含莫来石相、高粘度玻璃项的均化矾土、低铝莫来石质耐火原料作为颗粒,加入碳化硅、活性氧化铝等基质原料,复相配伍经过压制烧结工艺成型的高致密性耐火内衬材料,制备得到的致密复相砖能降低整体材料的显气孔率,减少熔液的渗入通道,能有效降低铝液的渗透,降低材料与熔体的润湿性;
本发明采用复相材料配伍,能增加熔炉内衬耐火材料的抗热震性能和抗冲刷性能,减弱深层化学反应和物理渗透,提高炉衬自身强度,减弱机械损坏;可以延长再熔铝炉的耐火内衬材料使用寿命至5年左右。
具体实施方式
下面结合实施例对本发明做进一步描述。下述实施例的说明只是用于帮助理解本发明。应当指出,对于本技术领域的普通人员来说,在不脱离本发明原理的前提下,还可以对本发明进行若干修饰,这些改进和修饰也落入本发明权利要求的保护范围内。
作为一种实施例,再熔铝炉用致密复相砖的制造方法,具体包括以下步骤:
步骤1、以质量份数计,称取粒度为5-0mm的低铝莫来石颗粒25~35份、粒度为5-0mm的均化矾土颗粒25~35份、碳化硅细粉和碳化硅超微粉混合物5~10份、活性氧化铝微粉5~10份、煅烧氧化铝粉5~10份、粘土1~10份、微硅粉1~3份和糊***1~3份;低铝莫来石颗粒中氧化铝的化学含量为45%;均化矾土颗粒中氧化铝的化学含量为60%;以质量份数计,5~10份碳化硅细粉和碳化硅超微粉混合物,由2~5份硅含量为98%的黑碳化硅细粉与2~5份的粒度为2-10微米的黑碳化硅微粉混合而成;活性氧化铝微粉为粒径D50为0.5-1微米的轻烧活性氧化铝,轻烧活性氧化铝中氧化铝含量典型值为99.5%、氧化纳含量典型值为0.14%、氧化钙含量典型值为0.02%、氧化硅含量典型值为0.03%、氧化钙含量典型值为0.1%、比表面积典型值为5.1M2/g、粒径D50为0.8ųm;煅烧氧化铝粉为粒径D50为3-5微米的重烧氧化铝;粘土为粒径为200目的广西维罗泥;微硅粉为二氧化硅含量为97%的金属硅冶炼的炉灰收集活性微粉;糊***为黄糊精与水按1:10的比例混合的液体;
步骤2、将经步骤1称取的原料送入混炼机(耐火材料行星式强制混合机)进行混合,得到混合后原料;混合时先加入低铝莫来石颗粒、均化矾土颗粒、碳化硅细粉和碳化硅超微粉混合物、活性氧化铝微粉、煅烧氧化铝粉、粘土和微硅粉先混合3分钟,再倒入糊***湿混25分钟;将混炼机的混合总时长控制在28~30分钟;
步骤3、在再熔铝炉用致密复相砖模内倒入设定重量的混合后原料,电动程控压砖机(采用型号为630吨的压机)在80%功率下0.5米行程内连续冲击7次后,压制得到压制成型的砖块并出砖;
步骤4、将经步骤3压制成型的砖块送入高温隧道窑,高温隧道窑按照设定的升温制度(100米高温隧道窑内按每2小时推1车的速率)逐步升温至1520℃进行热处理,再进行冷却,得到再熔铝炉用致密复相砖。
经过本实施例制备得到的再熔铝炉用致密复相砖的各项性能指标如下表1所示:
表1 本实施例制备得到的再熔铝炉用致密复相砖性能指标表
原料名称 | 原料在再熔铝炉用致密复相砖内的含量或复相砖的性能参数 |
Al2O3 | 含量≥46% |
SiO2 | 含量≤50% |
SiC | 含量≥3% |
Fe2O3 | 含量≤1.5% |
气孔率 | ≤13% |
体积密度 | ≥2.30 g/cm3 |
耐压强度 | ≥70 MPa |
荷重软化温度Ta | ≥1450℃ |
热震稳定性(1100℃,水冷) | ≥6次 |
由上表1可知,本实施例制备的再熔铝炉用致密复相砖能用在国内规模为20吨/日的再熔铝炉上,使用寿命可达到五年以上。
Claims (9)
1.一种再熔铝炉用致密复相砖,其特征在于,以质量份数计,由以下原料制成:低铝莫来石颗粒25~35份、均化矾土颗粒25~35份、碳化硅细粉和碳化硅超微粉混合物5~10份、活性氧化铝微粉5~10份、煅烧氧化铝粉5~10份、粘土1~10份、微硅粉1~3份和糊***1~3份;
低铝莫来石颗粒中氧化铝的化学含量为45%;
均化矾土颗粒中氧化铝的化学含量为60%;
以质量份数计,5~10份碳化硅细粉和碳化硅超微粉混合物,由2~5份硅含量为98%的黑碳化硅细粉与2~5份的粒度为2-10微米的黑碳化硅微粉混合而成;
粘土为粒径为200目的广西维罗泥;
微硅粉为二氧化硅含量为97%的金属硅冶炼的炉灰收集活性微粉;
糊***为黄糊精与水按1:10的比例混合的液体。
2.根据权利要求1所述再熔铝炉用致密复相砖,其特征在于:活性氧化铝微粉为粒径D50为0.5-1微米的轻烧活性氧化铝。
3.根据权利要求1所述再熔铝炉用致密复相砖,其特征在于:轻烧活性氧化铝中氧化铝含量典型值为99.5%、氧化纳含量典型值为0.14%、氧化钙含量典型值为0.02%、氧化硅含量典型值为0.03%、氧化钙含量典型值为0.1%、比表面积典型值为5.1M2/g、粒径D50为0.8ųm。
4.根据权利要求1所述再熔铝炉用致密复相砖,其特征在于:煅烧氧化铝粉为粒径D50为3-5微米的重烧氧化铝。
5.根据权利要求1所述再熔铝炉用致密复相砖,其特征在于:低铝莫来石颗的粒度为5-0mm;均化矾土颗粒的粒度为5-0mm。
6.一种如权利要求1至4任一项所述的再熔铝炉用致密复相砖的制造方法,其特征在于,包括以下步骤:
步骤1、以质量份数计,称取粒度为5-0mm的低铝莫来石颗粒25~35份、粒度为5-0mm的均化矾土颗粒25~35份、碳化硅细粉和碳化硅超微粉混合物5~10份、活性氧化铝微粉5~10份、煅烧氧化铝粉5~10份、粘土1~10份、微硅粉1~3份和糊***1~3份;
步骤2、将经步骤1称取的原料送入混炼机进行混合,得到混合后原料;
步骤3、在再熔铝炉用致密复相砖模内倒入设定重量的混合后原料,电动程控压砖机压制得到压制成型的砖块并出砖;
步骤4、将经步骤3压制成型的砖块送入高温隧道窑,高温隧道窑按照设定的升温制度逐步升温至设定温度进行热处理,再进行冷却,得到再熔铝炉用致密复相砖。
7.根据权利要求6所述再熔铝炉用致密复相砖的制造方法,其特征在于:步骤2中混炼机为耐火材料行星式强制混合机;步骤2中混炼机将经步骤1称取的原料进行混合时,先加入低铝莫来石颗粒、均化矾土颗粒、碳化硅细粉和碳化硅超微粉混合物、活性氧化铝微粉、煅烧氧化铝粉、粘土和微硅粉先混合3分钟,再倒入糊***湿混25分钟;将混炼机的混合总时长控制在28~30分钟。
8.根据权利要求6所述再熔铝炉用致密复相砖的制造方法,其特征在于:步骤3中电动程控压砖机采用型号为630吨的压机。
9.根据权利要求6所述再熔铝炉用致密复相砖的制造方法,其特征在于:步骤4中高温隧道窑的升温制度为100米高温隧道窑内按每2小时推1车的速率逐步升温至1520℃。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202310053684.0A CN116283248A (zh) | 2023-02-03 | 2023-02-03 | 一种再熔铝炉用致密复相砖及其制造方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202310053684.0A CN116283248A (zh) | 2023-02-03 | 2023-02-03 | 一种再熔铝炉用致密复相砖及其制造方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN116283248A true CN116283248A (zh) | 2023-06-23 |
Family
ID=86813934
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202310053684.0A Pending CN116283248A (zh) | 2023-02-03 | 2023-02-03 | 一种再熔铝炉用致密复相砖及其制造方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN116283248A (zh) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102701763A (zh) * | 2012-06-08 | 2012-10-03 | 安徽瑞泰新材料科技有限公司 | 一种低铝烧结铝硅质耐火材料及其制备方法 |
CN109111215A (zh) * | 2018-08-29 | 2019-01-01 | 通达耐火技术股份有限公司 | 一种水泥回转窑用低铝硅莫砖及其制备方法 |
CN112341177A (zh) * | 2020-09-28 | 2021-02-09 | 山东耐材集团鲁耐窑业有限公司 | 一种焦炉蓄热室上部用抗蚀变致密型格子砖及其制备方法 |
-
2023
- 2023-02-03 CN CN202310053684.0A patent/CN116283248A/zh active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102701763A (zh) * | 2012-06-08 | 2012-10-03 | 安徽瑞泰新材料科技有限公司 | 一种低铝烧结铝硅质耐火材料及其制备方法 |
CN109111215A (zh) * | 2018-08-29 | 2019-01-01 | 通达耐火技术股份有限公司 | 一种水泥回转窑用低铝硅莫砖及其制备方法 |
CN112341177A (zh) * | 2020-09-28 | 2021-02-09 | 山东耐材集团鲁耐窑业有限公司 | 一种焦炉蓄热室上部用抗蚀变致密型格子砖及其制备方法 |
Non-Patent Citations (2)
Title |
---|
李红霞等人: "《耐火材料手册 第2版》", 31 January 2021, 北京:冶金工业出版社, pages: 795 - 796 * |
郭海珠等人: "《实用耐火原料手册》", 30 September 2000, 北京:中国建材工业出版社, pages: 138 - 139 * |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN101613207B (zh) | 一种精炼钢包用低碳刚玉尖晶石砖及其制备方法 | |
CN107602099B (zh) | 一种含改性石墨转炉挡渣用低碳滑板砖及其制备方法 | |
CN111704443B (zh) | 一种中频炉用铝镁质捣打料及其制备方法 | |
CN101913890B (zh) | 一种再生材料高炉用炮泥及其制备方法 | |
CN108821785A (zh) | 一种用于热轧加热炉水梁保温衬的防粘渣涂料 | |
CN108585797B (zh) | 一种添加氮化硼的自润滑镁质挡渣滑板砖及其制备方法 | |
CN104844233A (zh) | 一种燃烧炉用的特种耐火材料及其制备方法 | |
CN1950313A (zh) | 陶瓷配料及适于耐火应用的相关产品 | |
CN103864443B (zh) | 水泥窑用硅莫砖及其制备方法 | |
CN107162614A (zh) | 一种镁铝碳耐火砖及其制备方法 | |
CN114292095A (zh) | 一种适用于多种钢铁冶炼的低碳刚玉尖晶石冲击砖制备方法 | |
CN110423125A (zh) | 复合转炉镁碳砖及其制备方法与应用 | |
CN104402462A (zh) | 一种用于高炉渣生产矿棉控流的塞棒及其工艺 | |
CN112358302A (zh) | 一种自修复无水炮泥 | |
CN111348903A (zh) | 一种铝碳质整体塞棒及其制备方法 | |
CN113754450A (zh) | Corex炉出铁口高稳定性炮泥制备方法 | |
CN111732417B (zh) | 一种抗氧化性能优异的耐冲刷超低碳镁碳砖及其制备方法 | |
CN113149674A (zh) | 一种阳极炉出铜溜槽浇注料及其制备方法 | |
CN103896606A (zh) | 一种高炉陶瓷杯用耐火材料 | |
CN104387093B (zh) | 一种用于高炉渣生产矿棉控流的水口及其生产工艺 | |
CN116283248A (zh) | 一种再熔铝炉用致密复相砖及其制造方法 | |
CN113443918B (zh) | 一种钢包底阻漩块用材料及利用其制备钢包底阻漩块的方法 | |
CN110627505A (zh) | 高炉炉底填缝料及其制备方法 | |
CN110423118B (zh) | 一种用多晶硅废料生产的铜溜槽用复合陶瓷相防渗耐磨材料 | |
CN111908931A (zh) | 含纳米碳的低碳铝碳化硅碳砖及制备方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination |