CN1111610C - 铝电解阳极组装用磷生铁 - Google Patents
铝电解阳极组装用磷生铁 Download PDFInfo
- Publication number
- CN1111610C CN1111610C CN99104248A CN99104248A CN1111610C CN 1111610 C CN1111610 C CN 1111610C CN 99104248 A CN99104248 A CN 99104248A CN 99104248 A CN99104248 A CN 99104248A CN 1111610 C CN1111610 C CN 1111610C
- Authority
- CN
- China
- Prior art keywords
- pig iron
- phosphorus
- content
- phosphorus pig
- electrolysis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 229910000805 Pig iron Inorganic materials 0.000 title claims abstract description 55
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 15
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 239000004411 aluminium Substances 0.000 title claims abstract description 14
- 238000005868 electrolysis reaction Methods 0.000 title claims abstract description 12
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 title claims description 10
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 53
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 49
- 239000011574 phosphorus Substances 0.000 claims abstract description 49
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 11
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 9
- 239000010703 silicon Substances 0.000 claims abstract description 8
- 229910052787 antimony Inorganic materials 0.000 claims abstract description 7
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims abstract description 7
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 3
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 8
- 238000002360 preparation method Methods 0.000 claims description 7
- 229910052797 bismuth Inorganic materials 0.000 claims description 6
- 229910001245 Sb alloy Inorganic materials 0.000 claims description 2
- 239000005864 Sulphur Substances 0.000 claims description 2
- 239000002140 antimony alloy Substances 0.000 claims description 2
- 229910001092 metal group alloy Inorganic materials 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 20
- 238000003723 Smelting Methods 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract 1
- 238000013459 approach Methods 0.000 abstract 1
- 238000002474 experimental method Methods 0.000 abstract 1
- 239000011593 sulfur Substances 0.000 abstract 1
- 239000002699 waste material Substances 0.000 abstract 1
- QMQXDJATSGGYDR-UHFFFAOYSA-N methylidyneiron Chemical compound [C].[Fe] QMQXDJATSGGYDR-UHFFFAOYSA-N 0.000 description 10
- 229910052742 iron Inorganic materials 0.000 description 9
- 238000012360 testing method Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 241000190022 Pilea cadierei Species 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000003909 pattern recognition Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 1
- 229910001051 Magnalium Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000007499 fusion processing Methods 0.000 description 1
- 238000005087 graphitization Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012536 packaging technology Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Landscapes
- Electrolytic Production Of Metals (AREA)
Abstract
铝电解阳极组装用磷生铁的制备方法,其特征在于:增加磷生铁的碳含量,使碳当量接近4.3%,硫含量要少于0.12%;将磷生铁的硅、磷含量分别降低0.5~1.5%和0.3~0.5%;添加0.5~2.5%金属锑的改性元素;因此,该熔炼温度降至1250~1350℃,延长工频炉寿命和减少能耗;铁环平均压脱力减小近1倍;试验极的铁-碳压降比普通极平均降低30mv左右;降低了阳极且装块废品率。
Description
本发明涉及铝电解阳极组装用磷生铁的组成。
预焙阳极铝电解槽阳极碳块组的铁—碳连接,是采用由工频炉熔化的磷生铁浇铸而成。纵观国内外一些铝厂用过的或正在使用的磷生铁组成,虽然配方不完全相同,但共同存在如下一些问题:
①高温流动性不好,工频炉熔炼温度偏高至1400~1450℃,有时高达1500℃以上,使铁水在浇铸时熔化钢爪,铁环压脱困难,工频炉炉衬易被溶蚀,缩短寿命;
②磷生铁环与碳碗壁热胀冷缩匹配不理想,组装阳极块有松动现象,阳极铁—碳压降偏高,有的高达180~200mv以上;
③磷生铁室温脆性较差,增加了铁环压脱机的负荷和维护工作量,备品备件消耗量大;
④磷生铁熔炼过程中,碳被烧损,而增碳又比较困难,被迫报废一部分回炉铁,使生产成本增加。
尽管铝电解阳极组装用磷生铁存在如此多的问题,也许由于属交叉学科未被人们注意,国内外在这方面开展的研究工作不多。在国内,80年代郑州铝厂与中科院上海冶金研究所、上海计算机研究所等单位共同开展过“预焙阳极铁碳压降模式识别”课题的联合研究,但郑州铝厂预焙阳极磷生铁新配方的铁碳压降仍高达195.7mv,见:阮显培“模式识别在铝电解预陪阳极铁碳压降调优中的应用”——《铝镁通讯》,1987,№3,10~20。在国外,前苏联А.я.Иоффе等人曾进行过低磷生铁配方的研究,研究的重点是降低电阻率,未综合考虑阳极组装工艺要求的低温浇铸、磷生铁与碳碗壁的热胀冷缩匹配及脱极要求的适度脆性等,见:А.Я.ИоффеиДР.《Цветные Металлы》——1875,№9,P36~39。
本发明的目的在于克服现用磷生铁的不足之处,而提供一种或几种组成优化的磷生铁,它能够:
①提高高温流动性,降低工频炉熔炼温度,延长工频炉寿命;
②改善磷生铁与碳碗壁的热胀冷缩匹配,减小接触电阻,降低铁—碳压降;
③适当提高磷生铁的室温脆性,减小铁环压脱机的负荷;
④改善钢爪头与碳碗壁的接触状况,减少因阳极钢爪松动所致的废品率。
本发明达到上述目的的技术方案是:改当前通用的磷生铁中碳、高硅、高磷配方 为高碳、低硅、低磷並另加改改元素的磷生铁配方,其特征在于:
①增加磷生铁的碳含量,使碳当量接近4.3,硫含量要少于0.12%,以降低其初晶温度,增加高温流动性,并利于铁水凝固过程中的石墨化膨胀;
②将磷生铁的硅、磷含量分别降低0.5~1.5%和0.3~0.5%,以降低磷生铁本身的电阻率;
③添加0.5~5.0%金属锑、铋的改性元素,提高磷生铁的脆性,并改善磷生铁与碳碗壁的热胀冷缩匹配。
本发明首次在工业生产中采用高碳、低硅、低磷另加金属锑、铋的改性元素的磷生铁配方,和当前工厂通用的配方比较,有以下显著优点:
①使工频炉熔炼温度由1400~1450℃降至1250~1350℃,降低100~150℃,当成份最优时,熔炼温度还可更低,这对延长工频炉寿命和减少能耗极为有利;
②铁环平均压脱力减小近1倍;
③试验极的铁—碳压降比普通极平均降低30mv左右;
④降低了生铁、硅铁、磷铁等使用量,不弃回炉铁,阳极组装块废品率降低。
经估算,对于年产10万吨铝锭的电解铝厂,每年可净获经济效益约500万元左右,还未包括室温脆性提高使铁环压脱力平均降低1倍等所带来的经济效益。
实施例:
实例1
研究表明,在C含量为3.0~3.5%,Si为2.4~3.5%,P为0.6~1.5%,Mn为0.5%,S<0.12%的磷生铁配方范围内,使磷生铁线膨胀系数趋于最小的配方为:C3.2%,Si3.0%,P1.0%,Mn0.5%,S<0.12%;使脆性值最佳的配方为:C3.0%,Si2.4%,P1.5%,Mn0.5%,S<0.12%;对线膨胀系数及室温脆性两者综合影响最佳的配方为:C3.2%,Si2.4%,P1.0%,Mn0.5%,S<0.12%;
实例2
在目前通用的磷生铁配方中,把C含量增加至3.6~4.0%,Si含量降低至2.0%以下,P含量降至0.2~0.4%,Mn、S含量仍分别为0.5%和<0.12%,可使100~500℃时磷生铁的平均线膨胀系数减少1~5%,100~600℃时的平均电阻率只为原来的20~30%;
实例3
在组成C3.5~4.0%,Si2.0~2.5%,P0.3~0.5%,Mn0.3~0.5%,S0.05~0.1%的磷生铁中,添加0.5~5.0%的金属锑、铋的改性元素,可使磷生铁的抗压强度降低5~10%,阳极铁—碳压降降低20~25mv;
实例4
在组成为C3.7~3.9%,Si1.7~1.9%,P0.3~0.4%,Mn0.5%,S0.06%的磷生铁中,添加0.5~3.0%的金属锑合金,磷生铁试样的抗弯强度比加锑前降低50%,上槽阳极铁—碳压降平均降低30mv左右,在装有压力表的铁环压脱机上测量了31块试验极与45块对比极的残极压脱应力,试验极和对比极的平均压脱应力分别为68.85MPa和133.18MPa,试验极减小幅度为48.3%,表明试验极和磷生铁脆性有明显提高,利于铁环脱极。
实例5
在组成C3.7~4.0%,Si1.7~2.0%,P0.3~0.5%,Mn0.3~0.5%,S0.05~0.10%的磷生铁中,添加0.5~4.0%的金属铋合金,磷生铁试样的抗弯强度比加铋前降低30~45%,上槽阳极铁—碳压降平均降低25~35mv,残极压脱力减小30~35%。
Claims (6)
1.铝电解阳极组装用磷生铁的制备方法,它改通用的磷生铁中碳、高硅、高磷配方为高碳、低硅、低磷並另加改性元素的磷生铁配方,其特征在于:
①增加磷生铁的碳含量,使碳当量接近4.3,硫含量要少于0.12%;
②将磷生铁的硅、磷含量分别降低0.5~1.5%和0.3~0.5%;
③添加0.5~5.0%金属锑、铋的改性元素。
2.根据权利要求1所述的铝电解阳极组装用磷生铁的制备方法,其特征在于:在C含量为3.0~3.5%,Si为2.4~3.5%,P为0.6~1.5%,Mn为0.5%,S<0.12%的磷生铁配方范围内,使磷生铁线膨胀系数趋于最小的配方为:C3.2%,Si3.0%,P1.0%,Mn0.5%,S<0.12%;使脆性值最佳的配方为:C3.0%,Si2.4%,P1.5%,Mn0.5%,S<0.12%;对线膨胀系数及室温脆性两者综合影响最佳的配方为:C3.2%,Si2.4%,P1.0%,Mn0.5%,S<0.12%。
3.根据权利要求1所述的铝电解阳极组装用磷生铁的制备方法,其特征在于:在目前通用的磷生铁配方中,把C含量增加至3.6~4.0%,Si含量降低至2.0%以下,P含量降至0.2~0.4%,Mn、S含量仍分别为0.5%和<0.12%。
4.根据权利要求1所述的铝电解阳极组装用磷生铁的制备方法,其特征在于:在组成C3.5~4.0%,Si2.0~2.5%,P0.3~0.5%,Mn0.3~0.5%,S0.05~0.1%的磷生铁中,添加0.5~5.0%的金属锑、铋的改性元素。
5.根据权利要求1所述的铝电解阳极组装用磷生铁的制备方法,其特征在于:在组成为C3.7~3.9%,Si1.7~1.9%,P0.3~0.4%,Mn0.5%,S0.06%的磷生铁中,添加0.5~3.0%的金属锑合金。
6.根据权利要求1所述的铝电解阳极组装用磷生铁的制备方法,其特征在于:在组成C3.7~4.0%,Si1.7~2.0%,P0.3~0.5%,Mn0.3~0.5%,S0.05~0.10%的磷生铁中,添加0.5~4.0%的金属铋合金。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN99104248A CN1111610C (zh) | 1999-04-30 | 1999-04-30 | 铝电解阳极组装用磷生铁 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN99104248A CN1111610C (zh) | 1999-04-30 | 1999-04-30 | 铝电解阳极组装用磷生铁 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1236019A CN1236019A (zh) | 1999-11-24 |
CN1111610C true CN1111610C (zh) | 2003-06-18 |
Family
ID=5271587
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN99104248A Expired - Fee Related CN1111610C (zh) | 1999-04-30 | 1999-04-30 | 铝电解阳极组装用磷生铁 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN1111610C (zh) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100427626C (zh) * | 2006-07-06 | 2008-10-22 | 中国铝业股份有限公司 | 一种铝电解磷生铁增碳方法 |
CN102443733B (zh) * | 2011-12-09 | 2013-01-23 | 云南铝业股份有限公司 | 一种提高石墨质阴极炭块导电性能的磷生铁 |
CN103205777A (zh) * | 2013-04-19 | 2013-07-17 | 扬州润友复合材料有限公司 | 一种用于电解铝阳极组装的稀土磷生铁的制备方法 |
CN106521559B (zh) * | 2016-12-01 | 2019-01-22 | 山东南山铝业股份有限公司 | 一种低硅电解铝液及其制备方法 |
-
1999
- 1999-04-30 CN CN99104248A patent/CN1111610C/zh not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
铝镁通讯 1987-03-01 模式识别在铝电解预焙阳极铁碳降调优中的应用阮显培 * |
Also Published As
Publication number | Publication date |
---|---|
CN1236019A (zh) | 1999-11-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
AU2002223160B2 (en) | Devices to conduct current to or from the electrodes in electrolysis cells, methods for preparation thereof, and an electrolysis cell and a method for production of aluminium by electrolysis of alumina solved in a melted electrolyte | |
CN101787550B (zh) | 一种铝电解预焙阳极导杆与钢爪的连接结构和制作方法 | |
CN101376917B (zh) | 铝电解磷生铁添加剂 | |
CN105543896B (zh) | 一种预焙铝电解槽阳极组结构 | |
CN1111610C (zh) | 铝电解阳极组装用磷生铁 | |
CN106676580A (zh) | 预焙阳极铝电解在线连接阳极的方法及结构 | |
Riposan et al. | Enhanced quality in electric melt grey cast irons | |
CN1078618C (zh) | 耐火材料壁 | |
CN103695760B (zh) | 一种合金灰口铸铁中高压泵体材料 | |
CN103305747A (zh) | 一种用于电解铝导电的钢棒、钢爪型材及其制造方法 | |
CN101397643B (zh) | 铝电解用磷硫生铁 | |
CN107130157B (zh) | 一种稀土耐磨合金 | |
CN110791699A (zh) | 铝用阳极浇铸铁水及其熔炼工艺 | |
CN105970084A (zh) | 一种耐张线夹及其制备方法 | |
CN105506673B (zh) | 一种高导电性预焙阳极钢爪 | |
CN202297804U (zh) | 铝电解槽的连续预焙阳极组合结构 | |
CN102174666A (zh) | 耐高温、耐磨损、耐腐蚀防磁材料的制备方法 | |
CN105543894A (zh) | 一种预焙铝电解槽无残极产生的阳极炭块结构 | |
CN1974819A (zh) | 一种铝电解用磷生铁 | |
CN1047542C (zh) | 组合式空心轧辊及其制造方法 | |
CN108707841A (zh) | 锌铝合金热浸镀用耐腐蚀不锈钢锅材料及其工艺 | |
CN101597771A (zh) | 铝电解槽配套阴极的加工方法 | |
CN202030838U (zh) | 铝电解阳极装置 | |
CN201367475Y (zh) | 铝电解槽三金属阳极爆炸片 | |
CN201217057Y (zh) | 组合式铝锰合金浇铸模具 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C06 | Publication | ||
PB01 | Publication | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
DD01 | Delivery of document by public notice | ||
DD01 | Delivery of document by public notice |
Addressee: Aluminum Corporation of China Limited Document name: Notification to Pay the Fees |
|
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20030618 Termination date: 20170430 |