CN105502406A - 适用于冶炼金属硅的透气元件 - Google Patents

适用于冶炼金属硅的透气元件 Download PDF

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CN105502406A
CN105502406A CN201610027902.3A CN201610027902A CN105502406A CN 105502406 A CN105502406 A CN 105502406A CN 201610027902 A CN201610027902 A CN 201610027902A CN 105502406 A CN105502406 A CN 105502406A
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ventilated element
metal smelting
smelting silicon
porous core
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陈奇龙
钱学义
熊伟
徐久林
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Chengdu Futian High Temperature Material Science & Technology Co Ltd
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    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00Silicon; Compounds thereof
    • C01B33/02Silicon
    • C01B33/021Preparation
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    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/10Shaped 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
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    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/66Monolithic refractories or refractory mortars, including those whether or not containing clay
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    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3217Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
    • C04B2235/3222Aluminates other than alumino-silicates, e.g. spinel (MgAl2O4)
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    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/40Metallic constituents or additives not added as binding phase
    • C04B2235/402Aluminium
    • CCHEMISTRY; METALLURGY
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    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/50Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
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    • C04B2235/5224Alumina or aluminates

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  • Ceramic Engineering (AREA)
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  • Structural Engineering (AREA)
  • Inorganic Chemistry (AREA)
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Abstract

本发明公开了一种适用于冶炼金属硅的透气元件,该透气元件包括透气座砖、透气芯、钢座、氧气吹气管和气腔体,透气芯设置在透气座砖内,钢座设置在透气芯下方,气腔体设置在钢座与透气芯之间,氧气吹气管一端伸入气腔体内,另一端伸出到透气座砖底部外。与现有的相比,本发明使得冶炼金属硅的金属硅的纯度提高1%以上。

Description

适用于冶炼金属硅的透气元件
技术领域
本发明冶炼领域,特别涉及一种适用于冶炼金属硅的透气元件。
背景技术
目前冶炼金属硅吹氧脱钙、铝普遍采用老办法,即,在包底预埋几根铜管,再用浇注料填充密实,虽然吹通效果好,翻腾剧烈,但是存在较多缺陷:⑴铜管内径粗,液体硅容易渗穿,产生安全事故及损失;⑵现场填充的浇注料未经高温处理,强度低,不耐冲刷,使用寿命低,需频繁更换;⑶制作麻烦,工人劳动强度大,人工成本高。
为了提升产品的使用寿命,个别厂家采用了炼钢用的狭缝式透气砖,虽然抗蚀损性能得到了提升,但是吹成效果差,随着使用寿命的增加,狭缝逐渐变薄或堵塞,透气量降低,无法满足冶炼要求,而且有时还会出现断裂现象。
发明内容
本发明的目的之一就在于提供一种适用于冶炼金属硅的透气元件,该透气元件使得冶炼金属硅的金属硅的纯度提高1%以上。
技术方案是:一种适用于冶炼金属硅的透气元件,该透气元件包括透气座砖、透气芯、钢座、氧气吹气管和气腔体,透气芯设置在透气座砖内,钢座设置在透气芯下方,气腔体设置在钢座与透气芯之间,氧气吹气管一端伸入气腔体内,另一端伸出到透气座砖底部外。
作为优选,所述透气芯纵向截面为梯形。
作为优选,所述透气芯内纵向均匀设置有透气圆形通道。
作为优选,所述透气圆形通道孔径为1-3mm和/或所述透气圆形通道锥度为0.03—0.06。
作为优选,所述相邻两根透气圆形通道之间的距离为8-20mm。
作为优选,所述相邻两根透气圆形通道之间的距离为10-15mm。
作为优选,所述透气芯由60-70%Al2O3≥97%的烧结刚玉和10—20%铝镁尖晶石、4-10%铝微粉、3-10%纯铝酸钙水泥混合后烧结而成。
本发明的目的之二在于提供一种冶炼金属硅精炼包。
技术方案是:一种冶炼金属硅精炼包,包括高铝砖体、透气元件和直流浇注料体,透气元件和直流浇注料体设置在高铝砖体底部,直流浇注料体设置在透气元件四周,其特征在于:所述透气元件为上述的透气元件。
作为优选,所述透气元件制作好后,安装在高铝砖体底部底部,然后浇注直流浇注料形成直流浇注料体。
本发明的目的之二在于提供一种冶炼金属硅的方法,该方法采用上述的透气元件。
技术方案是:一种冶炼金属硅的方法,。
与现有技术相比,本发明的有益效果在于:
⑴本发明通过设计合理的透气通道,控制液体硅的下渗深度,因此避免了渗漏事故;
⑵透气座砖由高纯刚玉和多种微粉混合后烧结而成,经过高温处理,强度高,抗蚀损性能好,因此解决低寿命问题;
⑶透气量大,吹成效果好;体积稳定,透气孔径不容易变形,透气量的保持效果好;透气孔径的厚度在一定范围以内,受液体硅静压力的作用,即使不吹气,也不会发生穿透事故,安全性能高;
⑷透气孔径分布科学,吹气时,产品内部产生的拉应力小,不容易断裂;
⑸采用高纯刚玉和多种微粉复合而成的产品,经高温处理后的抗蚀损性能强,使用寿命长;
⑹安装、操作方便。
附图说明
图1是本发明冶炼金属硅精炼包结构示意图;
图2是本发明透气元件结构示意图。
具体实施方式
下面将结合附图对本发明作进一步说明。
如图1所示,一种冶炼金属硅精炼包,包括高铝砖体1、透气元件2和直流浇注料体3,透气元件2和直流浇注料体3设置在高铝砖体1底部,直流浇注料体3设置在透气元件2四周。
透气元件2如图2所示,包括透气座砖21、透气芯22、钢座23、氧气吹气管24和气腔体25,透气芯22设置在透气座砖21内,钢座23设置在透气芯22下方,气腔体25设置在钢座23与透气芯22之间,氧气吹气管一端伸入气腔体25内,另一端伸出到透气座砖21底部外。
透气芯22纵向截面为梯形,透气芯22内纵向均匀设置有锥度为0.03—0.06的透气圆形通道26,透气圆形通道26孔径为1-3mm,相邻两根透气圆形通道26之间的距离为8-20mm,10-15mm最佳。在10-15mm时,当通氧气时,氧气顺着每个孔道均匀地注入罐内,形成气泡,分散到液体硅中,部分氧气与钙、铝等杂质反应形成氧化钙和氧化铝,反应物随着气包上浮排除,从而提高了金属硅的纯度,因此排渣效果好,使金属硅的纯度提高1%以上。而且由于孔径在1-3mm之间,若停止吹气,液体硅在毛细作用下下渗深度有限,不会穿透烧坏设备。
透气芯22由60-70%Al2O3≥97%的烧结刚玉和10—20%铝镁尖晶石、4-10%铝微粉、3-10%纯铝酸钙水泥混合后烧结而成,经高温处理后高温强度大,耐液体硅的冲刷能力强,蚀损慢,使用寿命长。
本发明透气元件2在工厂制作好后,运输到冶炼金属硅生产线,安装在冶炼金属硅精炼包上就可以使用,降低了工人劳动强度和人工成本。
由于透气圆形通道26是圆孔的,在多次使用烧结中,即使产品发生体积膨胀也不会造成孔道大幅度地变小或者闭合,所以不会影响透气效果
将本发明透气元件2安装在冶炼金属硅精炼包上,与同样的安装有铜管或狭缝式透气砖的相比,结果见表一:
表一

Claims (10)

1.一种适用于冶炼金属硅的透气元件,其特征在于:该透气元件包括透气座砖、透气芯、钢座、氧气吹气管和气腔体,透气芯设置在透气座砖内,钢座设置在透气芯下方,气腔体设置在钢座与透气芯之间,氧气吹气管一端伸入气腔体内,另一端伸出到透气座砖底部外。
2.根据权利要求1所述的适用于冶炼金属硅的透气元件,其特征在于:所述透气芯纵向截面为梯形。
3.根据权利要求1或2任一权利要求所述的适用于冶炼金属硅的透气元件,其特征在于:所述透气芯内纵向均匀设置有透气圆形通道。
4.根据权利要求3所述的适用于冶炼金属硅的透气元件,其特征在于:所述透气圆形通道孔径为1-3mm和/或所述透气圆形通道锥度为0.03—0.06。
5.根据权利要求3所述的适用于冶炼金属硅的透气元件,其特征在于:所述相邻两根透气圆形通道之间的距离为8-20mm。
6.根据权利要求5所述的适用于冶炼金属硅的透气元件,其特征在于:所述相邻两根透气圆形通道之间的距离为10-15mm。
7.根据权利要求1-6任一权利要求所述的适用于冶炼金属硅的透气元件,其特征在于:所述透气芯由60-70%Al2O3≥97%的烧结刚玉和10—20%铝镁尖晶石、4-10%铝微粉、3-10%纯铝酸钙水泥混合后烧结而成。
8.一种冶炼金属硅精炼包,包括高铝砖体、透气元件和直流浇注料体,透气元件和直流浇注料体设置在高铝砖体底部,直流浇注料体设置在透气元件四周,其特征在于:所述透气元件为权利要求1-7所述的任一权利要求所述的透气元件。
9.根据权利要求8所述的冶炼金属硅精炼包,其特征在于:所述透气元件制作好后,安装在高铝砖体底部底部,然后浇注直流浇注料形成直流浇注料体。
10.一种冶炼金属硅的方法,其特征在于:该方法采用权利要求1-7任一权利要求所述的透气元件。
CN201610027902.3A 2016-01-15 2016-01-15 适用于冶炼金属硅的透气元件 Pending CN105502406A (zh)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2818489Y (zh) * 2004-10-28 2006-09-20 濮阳濮耐高温材料有限公司 一种复合透气砖
CN203437635U (zh) * 2013-08-19 2014-02-19 浙江自立股份有限公司 一种钢包中的备用透气砖
CN203711826U (zh) * 2014-03-11 2014-07-16 河南省伯马股份有限公司 炼钢用吹气耐火元件
CN204224267U (zh) * 2014-11-26 2015-03-25 湖北三新硅业有限责任公司 一种金属硅炉外精炼吹氧装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2818489Y (zh) * 2004-10-28 2006-09-20 濮阳濮耐高温材料有限公司 一种复合透气砖
CN203437635U (zh) * 2013-08-19 2014-02-19 浙江自立股份有限公司 一种钢包中的备用透气砖
CN203711826U (zh) * 2014-03-11 2014-07-16 河南省伯马股份有限公司 炼钢用吹气耐火元件
CN204224267U (zh) * 2014-11-26 2015-03-25 湖北三新硅业有限责任公司 一种金属硅炉外精炼吹氧装置

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Application publication date: 20160420