CN111892413A - 铝电解槽内衬专用防渗砖及其制备方法 - Google Patents
铝电解槽内衬专用防渗砖及其制备方法 Download PDFInfo
- Publication number
- CN111892413A CN111892413A CN202010871429.3A CN202010871429A CN111892413A CN 111892413 A CN111892413 A CN 111892413A CN 202010871429 A CN202010871429 A CN 202010871429A CN 111892413 A CN111892413 A CN 111892413A
- Authority
- CN
- China
- Prior art keywords
- equal
- percent
- content
- parts
- powder
- 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.)
- Granted
Links
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
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
-
- 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
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/62204—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products using waste materials or refuse
-
- 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
- C04B35/622—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
- C04B35/636—Polysaccharides or derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
- C25C3/08—Cell construction, e.g. bottoms, walls, cathodes
-
- 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
- C04B2235/32—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
- C04B2235/3206—Magnesium oxides or oxide-forming salts thereof
-
- 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
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
-
- 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
- C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
-
- 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
- C04B2235/3481—Alkaline earth metal alumino-silicates other than clay, e.g. cordierite, beryl, micas such as margarite, plagioclase feldspars such as anorthite, zeolites such as chabazite
-
- 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
- C04B2235/50—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
- C04B2235/65—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
- C04B2235/70—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
-
- 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
- C04B2235/9669—Resistance against chemicals, e.g. against molten glass or molten salts
-
- 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
Abstract
本发明提供一种铝电解槽内衬专用防渗砖及其制备方法。包括如下重量百分比的原料:硅铝材料颗粒料55%~67%、混合粉30~40%、结合剂3~5%,所述硅铝材料颗粒料由废耐酸砖、低铝硅砂石、废硅砖、堇青石、硅石中的至少三种组成,所述混合粉为低铝硅砂石粉、石英粉、铝矾土熟料、陶土粉、滑石粉中的至少三种组成。与现有技术相比,本发明对制作的砖进行取样,检测抗熔融冰晶石侵蚀性能,检测结果:体积密度≥1.96kg/cm3,常温耐压强度≥23MPa,反应腐蚀面积≤3.5cm2、反应深度≤3.5mm;导热系数:热面平均温度400℃≤0.53W/m·k、800℃≤0.63W/m·k。表明本发明的防渗砖阻止电解质渗透能力优良,可以有效解决电解槽槽底的漏槽问题,提高电解槽的使用寿命。
Description
技术领域
本发明涉及有色金属冶炼设备用耐火材料技术领域,特别是涉及一种铝电解槽内衬专用防渗砖及其制备方法。
背景技术
电解铝生产的主要设备是电解槽,影响铝电解槽使用寿命的比较重要的因素是内衬用耐火材料防渗漏的性能。现阶段电解铝主要采用冰晶石—氧化铝熔盐电解法生产,但在电解铝生产过程中,槽内衬受到冰晶石侵蚀、Na与NaF的蒸汽与铝液体通过碳砖砖缝向侧壁耐火砖、保温砖渗透,通过槽底碳质阴极渗入到隔热层,致使铝电解槽寿命降低。
现有技术的电解槽内衬用耐火材料主要有两种:一是采用通用尺寸规格的普通耐火粘土砖(230mm×114mm×65mm)。二是耐火干式防渗料。采用通用尺寸规格的普通耐火粘土砖,因是单一的长方体结构,在使用中直通型的砖缝较多,电解质容易从砖缝处渗透下来,加上选用材料为普通的耐火材料,其防渗效果较差,属于逐渐淘汰阶段。现阶段,干式防渗料虽然使用较多,施工方便,但传统的干式防渗料防渗不防漏,在电解槽长期恶劣工作条件下,特别是大于500KA的电解槽会逐渐被冰晶石所消耗,最终导致槽底发热,严重的会形成漏槽。因此现有两种铝电解槽内衬用耐火材料在使用中都不够理想。
因此发明一种抗电解质和金属浸蚀的性能强,抗腐蚀性强,防渗效果较好的铝电解槽内衬专用防渗砖是亟待解决的技术问题。
发明内容
本发明要解决的技术问题是提供一种铝电解槽内衬专用防渗砖及其制备方法,以克服现有技术的防渗效果差、抗腐蚀性弱、电解槽易渗槽的技术问题。
为解决上述技术问题,本发明采用如下技术方案:
设计一种铝电解槽内衬专用防渗砖,包括如下重量百分比的原料:硅铝材料颗粒料55%~67%、混合粉30~40%、结合剂3.5~4.5%,所述硅铝材料颗粒料由废耐酸砖、低铝硅砂石、废硅砖、堇青石、硅石中的至少三种组成,所述混合粉为低铝硅砂石粉、石英粉、铝矾土熟料、陶土粉、滑石粉中的至少三种组成。
优选地,所述硅铝材料颗粒料包括如下重量份的原料:废耐酸砖15~35份、废硅砖15~35份、堇青石0~35份、硅石0~35份。
优选地,所述废耐酸砖中Al2O3含量≤25%,SiO2含量≥68%,其粒度≤3㎜。
优选地,所述低铝硅砂石中Al2O3含量≤8%,SiO2含量≥85%,其粒度≤3㎜。
优选地,所述废硅砖为生产焦炉、玻璃窑和/或热风窑炉用硅砖所产生的废弃物,以重量计,其SiO2含量≥95%,其粒度≤3㎜。
优选地,以重量计,在所述堇青石其Al2O3含量≤35%,SiO2含量≥48%,MgO含量≥12%,其粒度≤3㎜;所述硅石其SiO2含量≥98%,其粒度≤2.5㎜。
优选地,所述混合粉中至少有80%的粒度小于0.088㎜;所述混合粉包括如下重量份的原料组成:低铝硅砂粉0~20份、石英粉0~15份、铝矾土熟料10~20份、陶土粉8~12份、滑石粉4~6份。
优选地,所述低铝硅砂石粉中Al2O3含量≤8%,SiO2含量≥85%;所述石英粉中SiO2含量≥98%;所述铝矾土熟料中Al2O3含量≥65%;所述陶土粉中Al2O3含量≤35%,所述滑石粉中MgO含量≥30%, SiO2含量≥60%。
优选地,所述结合剂是由玉米黄糊精粉与水以1:1.8~2.2重量比配制而成。
上述的铝电解槽内衬专用防渗砖的制备方法,包括如下步骤:
1)将上述的原料加入轮式搅拌机混炼10~15分钟;
2)将步骤1)得到的混合物采用吊打排气的方法压制成型制成砖坯,在80~160℃条件下进行干燥,在1000~1150℃的温度下进行煅烧制成防渗砖。
与现有技术相比,本发明的有益技术效果在于:
1. 本发明各原料组分协同作用制得的铝电解槽内衬专用防渗砖,防渗效果好、强度高、高温体积稳定,密度适中具备有隔热效果、使用时间长、安全生产系数高、保证了电解槽正常安全生产的运行、降低维修成本、节约资源的效果。废弃物利用率高,循环经济和环保理念,环境协调性好、原料易得、节能环保; 各原料之间主要的配合作用机理简述如下:
本发明所制备的防渗砖其成分具有高硅高钠低铝的特点,所采用的废弃耐酸砖、低铝硅砂石,充分利用其材料特有的化学成分和致密的物理特性,特别是废弃耐酸砖,通过对其化学和物理性能分析发现,其主要成分为SiO2含量≥68%,Al2O3含量≤25%,采用本复合材料形成的莫来石相非常完整,是一种非常好的高硅高纳低铝的合成材料,比直接用添加纳长石、钾长石原料制作防渗砖效果更好,经过合成煅烧过的废耐酸砖组织结构致密,非常适合制作防渗砖所用原料,通过与其它材料的搭配选择,再合理的利用废弃的硅砖,发挥这些材料特有的化学成分,采取多成分组合,制作出来的防渗砖达到理想的防渗效果。
2.本发明的铝电解槽内衬专用防渗砖检测抗熔融冰晶石腐蚀性能,检测结果:渗透区域反应面积≤2.5cm2,渗透深度≤ 3mm。满足电解槽用防渗砖的性能指标,能够有效改善砖的防渗防漏性能,从而解决电解槽槽底的漏槽问题,提高电解槽的使用寿命。
具体实施方式
下面结合实施例来说明本发明的具体实施方式,但以下实施例只是用来详细说明本发明,并不以任何方式限制本发明的范围。所涉及的原料如无特别说明,均为市售常规工业原料;所涉及的加工制作方法,如无特别说明,均为常规方法。
实施例1:设计一种铝电解槽内衬专用防渗砖,包括如下重量份的原料:硅铝材料颗粒料60份(其中,硅铝材料颗粒料是由20份废耐酸砖,15份低铝硅砂石,25份废硅砖组成)、混合粉40份(混合粉由石英粉10份、铝矾土熟料15份、陶土粉10份、滑石粉5份组成)、玉米黄糊精粉配制而成结合剂3份。
上述废耐酸砖中Al2O3含量≤25%,SiO2含量≥68%,其粒度≤3㎜。
废硅砖为生产热风窑炉用硅砖所产生的废弃物,以重量计,其SiO2含量≥95%,其粒度≤3㎜。
混合粉包括如下重量份的原料组成:石英粉10份、铝矾土熟料15份、陶土粉10份、滑石粉5份。
低铝硅砂石中Al2O3含量≤8%,SiO2含量≥85%;石英粉中SiO2含量≥98%;铝矾土熟料中Al2O3含量≥65%;陶土粉中Al2O3含量≤35%;滑石粉中MgO含量≥30%, SiO2含量≥60%。
混合粉中至少有80%的粒度≤0.088㎜。
上述铝电解槽内衬专用防渗砖的制备方法,包括如下步骤:
1)上述的原料加入水加入轮式搅拌机混炼12分钟;
2)将步骤1)得到的混合物采用吊打排气的方法压制成型制成砖坯,在120℃条件下进行干燥,在1000~1150℃的温度下进行煅烧制成防渗砖。
本发明制得的铝电解槽内衬专用防渗砖Al2O3含量为21.2%,SiO2含量为69.3%,MgO含量为1.55%,CaO含量为2.3%,体积密度为1.95kg/cm3 ,常温耐压强度为23MPa,反应腐蚀面积为3.3cm2、反应深度为1.8mm。导热系数:热面平均温度400℃为0.51W/m·k、800℃为0.63 W/m·k,热膨胀率(1000℃)为0.49%。
实施例2:与实施例1的不同之处在于:
一种铝电解槽内衬专用防渗砖,包括如下重量份的原料:硅铝材料颗粒料60份(其中,硅铝材料颗粒料是由20份废耐酸砖、30份废硅砖组成、10份堇青石)、混合粉40份(混合粉由15份低铝硅砂石、10份铝矾土熟料、10份陶土粉、5份滑石粉组成)、玉米黄糊精粉配制而成结合剂4份。
本发明制得的铝电解槽内衬专用防渗砖Al2O3含量为20.8%,SiO2含量为70.2%,MgO含量为1.66%,CaO含量为2.1%,体积密度为1.98kg/cm3 ,常温耐压强度为26MPa,反应腐蚀面积为3.1cm2、反应深度为1.5mm。导热系数:热面平均温度400℃为0.52W/m·k、800℃为0.59 W/m·k,热膨胀率(1000℃)为0.51%。
实施例3:与实施例1的不同之处在于:
一种铝电解槽内衬专用防渗砖,包括如下重量份的原料:硅铝材料颗粒料60份(其中,硅铝材料颗粒料是由25份废耐酸砖、20份废硅砖组成、10份硅石)、混合粉45份(混合粉由20份铝矾土熟料、10份石英粉、10份陶土粉、5份滑石粉组成)、玉米黄糊精粉配制而成结合剂4份。
本发明制得的铝电解槽内衬专用防渗砖Al2O3含量为20.8%,SiO2含量为70.6%,MgO含量为1.52%,CaO含量为2.2%,体积密度为1.96kg/cm3 ,常温耐压强度为27MPa,反应腐蚀面积为2.1cm2、反应深度为1.5mm。导热系数:热面平均温度400℃为0.49W/m·k、800℃为0.61 W/m·k,热膨胀率(1000℃)为0.53%。
实施4:与实施例1的不同之处在于:
一种铝电解槽内衬专用防渗砖,包括如下重量份的原料:硅铝材料颗粒料60份(其中,硅铝材料颗粒料是由25份废耐酸砖、20份废硅砖组成、15份铝硅砂石)、混合粉40份(混合粉由15份铝矾土熟料、10份石英粉、10份陶土粉、5份滑石粉组成)、玉米黄糊精粉配制而成结合剂3.5份。
本发明制得的铝电解槽内衬专用防渗砖Al2O3含量为22%,SiO2含量为69.2%,MgO含量为1.51%,CaO含量为2.6%,体积密度为1.96kg/cm3 ,常温耐压强度为23MPa,反应腐蚀面积为2.7cm2、反应深度为1.8mm。导热系数:热面平均温度400℃为0.51W/m·k、800℃为0.62W/m·k,热膨胀率(1000℃)为0.47%。
实施5:与实施例1的不同之处在于:
一种铝电解槽内衬专用防渗砖,包括如下重量份的原料:硅铝材料颗粒料60份(其中,硅铝材料颗粒料是由25份废耐酸砖、20份废硅砖组成、15份铝硅砂石)、混合粉45份(混合粉由10份铝矾土熟料、15份石英粉、15份陶土粉、5份滑石粉组成)、玉米黄糊精粉配制而成结合剂3.5份。
本发明制得的铝电解槽内衬专用防渗砖Al2O3含量为20.3%,SiO2含量为69.6%,MgO含量为1.62%,CaO含量为2.7%,体积密度为1.96kg/cm3 ,常温耐压强度为33MPa,反应腐蚀面积为3.1cm2、反应深度为2.3mm。导热系数:热面平均温度400℃为0.49W/m·k、800℃为0.59 W/m·k,热膨胀率(1000℃)为0.44%。
实施6:与实施例1的不同之处在于:
一种铝电解槽内衬专用防渗砖,包括如下重量份的原料:硅铝材料颗粒料60份(其中,硅铝材料颗粒料是由25份废耐酸砖、20份废硅砖组成、15份铝硅砂石)、混合粉40份(混合粉由15份铝矾土熟料、10份硅石粉、10份陶土粉、5份滑石粉组成)、玉米黄糊精粉配制而成结合剂3.5份。
本发明制得的铝电解槽内衬专用防渗砖Al2O3含量为21.1%,SiO2含量为69.2%,MgO含量为1.55%,CaO含量为2.4%,体积密度为2.03kg/cm3 ,常温耐压强度为29MPa,反应腐蚀面积为3.3cm2、反应深度为1.8mm。导热系数:热面平均温度400℃为0.53W/m·k、800℃为0.61W/m·k,热膨胀率(1000℃)为0.53%。
总的来说,本发明制得的铝电解槽内衬专用防渗砖的检测结果:Al2O3含量≤22%,SiO2含量≥68%,MgO含量≥1.5%,CaO含量≤2.4%,体积密度≥1.98kg/cm3 ,常温耐压强度≥15MPa,反应腐蚀面积≤3.5cm2、反应深度≤3.5mm。导热系数:热面平均温度400℃≤0.53W/m·k、800℃≤0.67 W/m·k,热膨胀率(1000℃)0.55%的标准要求。在制作过程中,将压制成型的砖坯 烘干即可,充分节约生产时间,提高生产效率。
本发明充分利用其材料特有的化学成分和致密的物理特性,采取多成分搭配组合,制作出来的防渗砖,其主要指标均优于现有标准。不仅使废弃的耐酸砖、废硅砖得到了再次利用,其所用的低铝硅砂石也是采矿时所丢弃的一种低品位矿石,在此发明中也得到了合理利用,所制备出来的电解槽专用防渗砖达到了防渗效果,其中反应腐蚀面积、反应深度指标还优于现有标准。
Claims (10)
1.一种铝电解槽内衬专用防渗砖,其特征在于,包括如下重量百分比的原料:硅铝材料颗粒料55%~67%、混合粉30~40%、结合剂3.5~4.5%,所述硅铝材料颗粒料由废耐酸砖、低铝硅砂石、废硅砖、堇青石、硅石中的至少三种组成,所述混合粉为低铝硅砂石粉、石英粉、铝矾土熟料、陶土粉、滑石粉中的至少三种组成。
2.根据权利要求1所述的铝电解槽内衬专用防渗砖,其特征在于,所述硅铝材料颗粒料包括如下重量份的原料:废耐酸砖15~35份、废硅砖15~35份、堇青石0~35份、硅石0~35份。
3.根据权利要求1所述的铝电解槽内衬专用防渗砖,其特征在于,所述废耐酸砖中Al2O3含量≤25%,SiO2含量≥68%,其粒度≤3㎜。
4.根据权利要求1所述的铝电解槽内衬专用防渗砖,其特征在于,所述低铝硅砂石中Al2O3含量≤8%,SiO2含量≥85%,其粒度≤3㎜。
5.根据权利要求1所述的铝电解槽内衬专用防渗砖,其特征在于,所述废硅砖为生产焦炉、玻璃窑和/或热风窑炉用硅砖所产生的废弃物,以重量计,其SiO2含量≥95%,其粒度≤3㎜。
6.根据权利要求1所述的铝电解槽内衬专用防渗砖,其特征在于,以重量计,在所述堇青石其Al2O3含量≤35%,SiO2含量≥48%,MgO含量≥12%,其粒度≤3㎜;所述硅石其SiO2含量≥98%,其粒度≤2.5㎜。
7.根据权利要求1所述的铝电解槽内衬专用防渗砖,其特征在于,所述混合粉包括如下重量份的原料组成:低铝硅砂粉0~20份、石英粉0~15份、铝矾土熟料10~20份、陶土粉8~12份、滑石粉4~6份;所述混合粉中至少有80%的粒度小于0.088㎜。
8.根据权利要1所述的铝电解槽内衬专用防渗砖,其特征在于,所述低铝硅砂石中Al2O3含量≤8%,SiO2含量≥85%;所述石英粉中SiO2含量≥98%;所述铝矾土熟料中Al2O3含量≥65%;所述陶土粉中Al2O3含量≤35%;所述滑石粉中MgO含量≥30%, SiO2含量≥60%。
9.根据权利要求1所述的铝电解槽内衬专用防渗砖,其特征在于,所述结合剂是由玉米黄糊精粉与水以1:1.8~2.2重量比配制而成。
10.如权力要求1所述的铝电解槽内衬专用防渗砖的制备方法,其特征在于,包括如下步骤:
1)将权利要求1所述的原料加入搅拌机混炼10~15分钟;
2)将步骤1)得到的混合物采用吊打排气的方法压制成型制成砖坯,在80~160℃条件下进行干燥,在1000~1150℃的温度下进行煅烧制成防渗砖。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202010871429.3A CN111892413B (zh) | 2020-08-26 | 2020-08-26 | 铝电解槽内衬专用防渗砖及其制备方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202010871429.3A CN111892413B (zh) | 2020-08-26 | 2020-08-26 | 铝电解槽内衬专用防渗砖及其制备方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN111892413A true CN111892413A (zh) | 2020-11-06 |
CN111892413B CN111892413B (zh) | 2023-02-14 |
Family
ID=73224410
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202010871429.3A Active CN111892413B (zh) | 2020-08-26 | 2020-08-26 | 铝电解槽内衬专用防渗砖及其制备方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN111892413B (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113307610A (zh) * | 2021-06-11 | 2021-08-27 | 内蒙古工业大学 | 高致密度石英-氧化锆复相陶瓷及其制备方法 |
Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB790366A (en) * | 1954-06-09 | 1958-02-05 | Gen Refractories Ltd | Improvements in or relating to refractory bricks, shapes and blocks |
CN1180679A (zh) * | 1996-10-24 | 1998-05-06 | 周季楠 | 铝电解槽用抗侵蚀耐火材料 |
KR20000043684A (ko) * | 1998-12-29 | 2000-07-15 | 이구택 | 제강용 충진재 |
US6132574A (en) * | 1997-05-30 | 2000-10-17 | Aluminium-Salzschalcke Aufbereitungs Gmbh | Bottom lining for electrolytic cells and process for its manufacture |
CN1903783A (zh) * | 2006-08-04 | 2007-01-31 | 梁学民 | 铝电解槽高效抗渗砖及其制备方法 |
CN101462870A (zh) * | 2009-01-16 | 2009-06-24 | 首钢总公司 | 一种用后耐火材料合成莫来石材料的制备方法 |
CN101994283A (zh) * | 2010-10-13 | 2011-03-30 | 广东绿由环保科技股份有限公司 | 一种用陶瓷废渣生产的蒸养生态透水环保砖及其制造方法 |
CN102992784A (zh) * | 2012-11-15 | 2013-03-27 | 中钢集团耐火材料有限公司 | 同质同相大型焦炉用硅泥浆 |
CN103553658A (zh) * | 2013-10-15 | 2014-02-05 | 浙江自立股份有限公司 | 一种用于铝电解槽的抗渗透砖及其制备方法 |
CN103726072A (zh) * | 2013-12-11 | 2014-04-16 | 中国铝业股份有限公司 | 一种铝电解槽的防渗方法 |
CN104291847A (zh) * | 2014-10-14 | 2015-01-21 | 淮南师范学院 | 一种高强度硅莫砖及其制备方法 |
CN107337457A (zh) * | 2017-06-07 | 2017-11-10 | 董建军 | 一种罐式煅烧炉用莫来石硅碳耐火砖及其制备方法 |
CN108314431A (zh) * | 2018-03-29 | 2018-07-24 | 河南蚂蚁新材料有限公司 | 复合陶瓷预制件及其制备方法 |
WO2020052350A1 (zh) * | 2018-09-11 | 2020-03-19 | 佛山欧神诺陶瓷有限公司 | 一种实验台环保型陶瓷面板及其制备方法 |
-
2020
- 2020-08-26 CN CN202010871429.3A patent/CN111892413B/zh active Active
Patent Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB790366A (en) * | 1954-06-09 | 1958-02-05 | Gen Refractories Ltd | Improvements in or relating to refractory bricks, shapes and blocks |
CN1180679A (zh) * | 1996-10-24 | 1998-05-06 | 周季楠 | 铝电解槽用抗侵蚀耐火材料 |
US6132574A (en) * | 1997-05-30 | 2000-10-17 | Aluminium-Salzschalcke Aufbereitungs Gmbh | Bottom lining for electrolytic cells and process for its manufacture |
KR20000043684A (ko) * | 1998-12-29 | 2000-07-15 | 이구택 | 제강용 충진재 |
CN1903783A (zh) * | 2006-08-04 | 2007-01-31 | 梁学民 | 铝电解槽高效抗渗砖及其制备方法 |
CN101462870A (zh) * | 2009-01-16 | 2009-06-24 | 首钢总公司 | 一种用后耐火材料合成莫来石材料的制备方法 |
CN101994283A (zh) * | 2010-10-13 | 2011-03-30 | 广东绿由环保科技股份有限公司 | 一种用陶瓷废渣生产的蒸养生态透水环保砖及其制造方法 |
CN102992784A (zh) * | 2012-11-15 | 2013-03-27 | 中钢集团耐火材料有限公司 | 同质同相大型焦炉用硅泥浆 |
CN103553658A (zh) * | 2013-10-15 | 2014-02-05 | 浙江自立股份有限公司 | 一种用于铝电解槽的抗渗透砖及其制备方法 |
CN103726072A (zh) * | 2013-12-11 | 2014-04-16 | 中国铝业股份有限公司 | 一种铝电解槽的防渗方法 |
CN104291847A (zh) * | 2014-10-14 | 2015-01-21 | 淮南师范学院 | 一种高强度硅莫砖及其制备方法 |
CN107337457A (zh) * | 2017-06-07 | 2017-11-10 | 董建军 | 一种罐式煅烧炉用莫来石硅碳耐火砖及其制备方法 |
CN108314431A (zh) * | 2018-03-29 | 2018-07-24 | 河南蚂蚁新材料有限公司 | 复合陶瓷预制件及其制备方法 |
WO2020052350A1 (zh) * | 2018-09-11 | 2020-03-19 | 佛山欧神诺陶瓷有限公司 | 一种实验台环保型陶瓷面板及其制备方法 |
Non-Patent Citations (3)
Title |
---|
刘世英等: "铝电解槽中黏土质砖的抗渗性研究", 《有色金属》 * |
岳昌盛等: ""以用后硅砖、黏土砖和滑板砖为原料合成莫来石"", 《耐火材料》 * |
张巍: "以废弃耐火材料制备再生料研究的新进展", 《能源环境保护》 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113307610A (zh) * | 2021-06-11 | 2021-08-27 | 内蒙古工业大学 | 高致密度石英-氧化锆复相陶瓷及其制备方法 |
CN113307610B (zh) * | 2021-06-11 | 2022-05-31 | 内蒙古工业大学 | 高致密度石英-氧化锆复相陶瓷及其制备方法 |
Also Published As
Publication number | Publication date |
---|---|
CN111892413B (zh) | 2023-02-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN107573098B (zh) | 一种用于烧结点火炉的轻量化浇注料 | |
CN102603347B (zh) | 以页岩为主要原料制备高性能超轻质泡沫陶瓷及方法 | |
CN107352977A (zh) | 一种钢包用渣线砖及制备方法 | |
CN103693972B (zh) | 一种耐高温密封胶泥 | |
CN101734936A (zh) | 一种Si3N4-SiC-C耐火原料粉体的制备方法 | |
CN109574639A (zh) | 高热震稳定性刚玉莫来石砖及其制备方法 | |
CN104725058A (zh) | 方镁石-镁铁铁铝尖晶石/镁橄榄石复合砖 | |
CN108083765A (zh) | 低导热抗剥落砖及其制备方法 | |
CN103435359B (zh) | 一种抗热震耐火浇注料 | |
CN105481375A (zh) | 一种节能耐火材料 | |
CN103833383A (zh) | 一种闭孔结构的刚玉-镁铝尖晶石质耐火骨料及制备方法 | |
CN111995411A (zh) | 一种高铝碳化硅耐火砖及其制备工艺 | |
CN111892413B (zh) | 铝电解槽内衬专用防渗砖及其制备方法 | |
CN106365654A (zh) | 一种添加ZrN‑SiAlON的抗锂电材料侵蚀耐火坩埚 | |
CN101811882A (zh) | 一种大型水泥窑用矾土-氮化硅复合耐磨砖及其制造方法 | |
CN104876603A (zh) | 隔热耐火砖的制备方法 | |
CN112250423A (zh) | 一种防渗高强镁橄榄石轻质隔热砖及其制备方法 | |
CN107867868A (zh) | 一种超致密高导热硅砖及其制备方法 | |
CN111964434A (zh) | 一种水泥回转窑用低导热砖及其生成制造方法 | |
CN103896606A (zh) | 一种高炉陶瓷杯用耐火材料 | |
CN101659561B (zh) | 一种800kg级节能隔热衬里材料及其制备方法 | |
CN102992788A (zh) | 回转窑内衬层专用免烧耐火砖及制备方法 | |
CN105218129A (zh) | 一种镁铁铝尖晶石窑口浇注料 | |
CN110698221A (zh) | 一种超强度焦炉炉底砌筑专用漂珠砖制备方法 | |
CN111072393B (zh) | 一种适用于铝电解槽的环保型干式防渗料 |
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 | ||
GR01 | Patent grant | ||
GR01 | Patent grant |