CN1053651C - 新型耐火隔热空心球及其制备方法 - Google Patents

新型耐火隔热空心球及其制备方法 Download PDF

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CN1053651C
CN1053651C CN96116116A CN96116116A CN1053651C CN 1053651 C CN1053651 C CN 1053651C CN 96116116 A CN96116116 A CN 96116116A CN 96116116 A CN96116116 A CN 96116116A CN 1053651 C CN1053651 C CN 1053651C
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hollow ball
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CN1184088A (zh
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张启山
王万昌
朱脉群
李宇平
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    • CCHEMISTRY; METALLURGY
    • 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
    • C04B38/00Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/08Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding porous substances
    • CCHEMISTRY; METALLURGY
    • 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
    • C04B35/66Monolithic refractories or refractory mortars, including those whether or not containing clay

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Abstract

本发明涉及一种改进的耐火隔热空心球及其制备方法,耐火隔热空心球空心,呈球状,球的表面有凸起,该空心球隔热效果好,其表面粗糙,堆积性能好,给施工、应用带来了方便,其制备方法可靠易行,使制作该结构的空心球的设想变成了现实。本发明耐火隔热空心球可广泛用于各种需要隔热保温的热工设备中,也可以用于化工等设备中,如可作为催化剂载体使用。

Description

新型耐火隔热空心球及其制备方法
本发明涉及一种改进的耐火隔热空心球及其制备方法。
耐火隔热空心球,如氧化铝空心球已在耐火保温隔热领域得到广泛应用,空心球利用了封闭空腔热阻大的特点,隔热效果好,深受用户欢迎。但是,现有的空心球外表面全是平整、光滑的,球与球之间的堆积空隙较大,因而热阻较小,热传递流程短,隔热效果仍欠佳,并且外表面平整、光滑的球,其堆积性能差,给施工、应用也带来不便。
本发明的目的在于提供一种新型的耐火隔热空心球,该空心球隔热效果好,堆积性能好,施工方便,本发明还同时提供了该空心球的可靠易行的制备方法。
本发明的目的可以由以下方案来实现:
所述的耐火隔热空心球,空心,呈球状,其表面有凸起。
为了成型的方便和使表面更糙粗,可使球的整个表面都布满凸起。
空心球的制备方法简单易行,首先根据成球的大小和厚度,确定塑粒和耐火火粉料的用量,然后按下述步骤操作,
(1)在成球机中放入塑粒球核,启动成球机转动,一般转速为10~120转/分,使塑粒旋转并不时地抛起。用塑粒(如用聚苯乙烯发泡球)作为球核,在烧成时分解挥发掉而形成空腔。塑粒遇水、遇热都不能膨胀。
(2)喷粘结剂。用有机粘结剂和无机粘结剂都可以,如可以用3~10%的聚乙烯醇溶液,一般需喷洒3~10秒钟,使球核表面布匀。
(3)散加粉料。制作普通隔热球用普通耐火料,如耐火粘土,制作高温隔热球则需用高温耐火料,如硅铝耐火料、氧化铝耐火料等,为了粉料的粘结成型,粉料至少需过120目筛,越细越好,如可以过320目筛使用。加粉料后转动一定时间,通常为5秒~1分钟,形成基础厚度。。
(4)再加粉料的同时喷加粘结剂,在10~180转/分的转速内调整成型机转速,观察调节粘结剂的喷洒情况和耐火粉料的添加情况,直到使球表面形成凸起制成半成品球。
(5)将半成品烘干、烧成后,塑粒分解挥发掉留下空腔,冷却后制得耐火隔热空心球。
空心球的尺寸可大可小,根据需要而定,一般φ2~φ16mm之间。
下面结合附图及实施例对本发明作进一步说明。
图1、耐火隔热空心球的结构示意图。
图2、图1的剖视图。
图中:1空心球、2表面凸起、3封闭空腔。
如图所示,空心球1有封闭空腔3形成空心,其表面布有凸起2。
本发明耐火隔热空心球表面有凸起,凸起相互交错,使球与球之间的堆积空隙减小,增大了热阻,并且使热的传递流程延长,进一步改善了隔热效果,该空心球表面粗糙,堆积性能好,给施工、应用也带来了方便,其制备方法可靠易行。该方法也可以用于其它行业中类似球的制备,如可制作该球状的催化剂载体,由于增大了表面积,可使催化剂充分发挥效能。
实施例1:
用聚苯乙烯发泡球作为球核,放入成球机中,启动成球机以80转/分的速度旋转,喷加5%的聚乙烧醇溶液8秒钟,使球核表面布匀粘结剂,散加过220目筛的硅铝耐火粉料,2分钟后,同时喷洒粘结剂和添加耐火粉料,调整成型机的转速为40转/分,观察调整粘结剂的喷洒情况和耐火粉料的添加情况,直到使球表面形成凸起2制成半成品球。将半成品球装入匣钵,在300℃左右烘干窑中烘干至水份小于1%,入窑烧成,烧成温度为1350~1400℃,高温时,作为球核的聚苯乙烯发泡球分解挥发掉留下封闭空腔3形成空心,冷却后制得本发明耐火隔热空心球。
该空心球的堆积密度为0.3~0.8g/cm3,导热系数为:400℃时0.15,1000℃时0.157,耐火度为1600~1900℃。
实施例2:
用聚苯乙烯发泡球作为球核,放入成球机中,启动成球机以60转/分的速度旋转,喷加6%的聚乙烧醇溶液5秒钟,使球核表面布匀粘结剂,散加过200目筛的硅铝耐火粉料,2分钟后,同时喷洒粘结剂和添加耐火粉料,调整成型机的转速为60转/分,观察调整粘结剂的喷洒情况和耐火粉料的添加情况,直到使球表面形成凸起2制成半成品球。将半成品球装入匣钵,在300℃左右烘干窑中烘干至水份小于1%,入窑烧成,烧成温度为1350~1400℃,高温时,作为球核的聚苯乙烯发泡球分解挥发掉留下封闭空腔3形成空心,冷却后制得本发明耐火隔热空心球。
实施例3:
用聚苯乙烯发泡球作为球核,放入成球机中,启动成球机以50转/分的速度旋转,喷加5%的聚乙烧醇溶液9秒钟,使球核表面布匀粘结剂,散加过230目筛的硅铝耐火粉料,2分钟后,同时喷洒粘结剂和添加耐火粉料,调整成型机的转速为80转/分,观察调整粘结剂的喷洒情况和耐火粉料的添加情况,直到使球表面形成凸起2制成半成品球。将半成品球装入匣钵,在300℃左右烘干窑中烘干至水份小于1%,入窑烧成,烧成温度为1350~1400℃,高温时,作为球核的聚苯乙烯发泡球分解挥发掉留下封闭空腔3形成空心,冷却后制得本发明耐火隔热空心球。
实施例4:
用聚苯乙烯发泡球作为球核,放入成球机中,启动成球机以100转/分的速度旋转,喷加3%的聚乙烧醇溶液8秒钟,使球核表面布匀粘结剂,散加过120目筛的硅铝耐火粉料,3分钟后,同时喷洒粘结剂和添加耐火粉料,调整成型机的转速为50转/分,观察调整粘结剂的喷洒情况和耐火粉料的添加情况,直到使球表面形成凸起2制成半成品球。将半成品球装入匣钵,在300℃左右烘干窑中烘干至水份小于1%,入窑烧成,烧成温度为1350~1400℃,高温时,作为球核的聚苯乙烯发泡球分解挥发掉留下封闭空腔3形成空心,冷却后制得本发明耐火隔热空心球。

Claims (2)

1、一种耐火隔热空心球,空心,呈球状,其特征在子球的整个表面布满凸起。
2、根据权利要求1所述的空心球的制备方法,由塑粒作为球核,在表面粘结耐火粉料,然后烘干、烧成而制得,其特征在于制备时依次按下述步骤进行:
(1)在成球机中放入塑粒球核,启动成球机转动,使塑粒旋转并不时地抛起;
(2)喷粘接剂;
(3)加粉料后转动一定时间;
(4)再加粉料的同时喷加粘结剂,在10~180转/分的转速内调整成型机转速,直到使球表面形成凸起制成半成品球;
(5)将半成品球烘干、烧成,制得本发明空心球。
CN96116116A 1996-12-06 1996-12-06 新型耐火隔热空心球及其制备方法 Expired - Fee Related CN1053651C (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102030553A (zh) * 2010-11-24 2011-04-27 淄博旭硝子刚玉材料有限公司 电熔锆刚玉砖的箱式保温退火方式

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108002822B (zh) * 2017-12-16 2020-05-19 北京市通州京伦特种耐火材料厂 硅铝空心球隔热制品及其制备方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6198404A (ja) * 1984-10-19 1986-05-16 Hitachi Ltd 産業用ロボツトの座標変換方式
JPS6211578A (ja) * 1985-07-08 1987-01-20 Mitsubishi Electric Corp 鉄鋼又は鉄合金へのフツ素ゴム系塗料塗布方法
US4917857A (en) * 1987-07-22 1990-04-17 Norddeutsche Affinerie Aktiengesellschaft Process for producing metallic or ceramic hollow-sphere bodies
CN2261548Y (zh) * 1996-12-06 1997-09-03 淄博工业陶瓷厂 新型耐火隔热空心球

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6198404A (ja) * 1984-10-19 1986-05-16 Hitachi Ltd 産業用ロボツトの座標変換方式
JPS6211578A (ja) * 1985-07-08 1987-01-20 Mitsubishi Electric Corp 鉄鋼又は鉄合金へのフツ素ゴム系塗料塗布方法
US4917857A (en) * 1987-07-22 1990-04-17 Norddeutsche Affinerie Aktiengesellschaft Process for producing metallic or ceramic hollow-sphere bodies
CN2261548Y (zh) * 1996-12-06 1997-09-03 淄博工业陶瓷厂 新型耐火隔热空心球

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102030553A (zh) * 2010-11-24 2011-04-27 淄博旭硝子刚玉材料有限公司 电熔锆刚玉砖的箱式保温退火方式
CN102030553B (zh) * 2010-11-24 2013-04-10 淄博旭硝子刚玉材料有限公司 电熔锆刚玉砖的箱式保温退火方式

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