CN115254379B - 一种覆铜板粉料加工用流化床气流磨机的分级轮及其制备方法 - Google Patents

一种覆铜板粉料加工用流化床气流磨机的分级轮及其制备方法 Download PDF

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CN115254379B
CN115254379B CN202210921814.3A CN202210921814A CN115254379B CN 115254379 B CN115254379 B CN 115254379B CN 202210921814 A CN202210921814 A CN 202210921814A CN 115254379 B CN115254379 B CN 115254379B
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ceramic
grading wheel
copper
fluidized bed
clad plate
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CN115254379A (zh
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章海燕
高绍兵
刘传兵
郭道九
陈刚
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Zhejiang Yuanji New Material Co ltd
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Abstract

本申请涉及磨机分级轮技术领域,具体公开了一种覆铜板粉料加工用流化床气流磨机的分级轮及其制备方法,覆铜板粉料加工用流化床气流磨机的分级轮,包括两个陶瓷圆环、固设在两个陶瓷圆环之间的多个陶瓷片,多个所述陶瓷片沿陶瓷圆环周向均匀分布,两个所述陶瓷圆环远离陶瓷片的端面分别固设有电极,两个所述陶瓷圆环、多个陶瓷片均采用陶瓷材料制备而成。陶瓷材料具有良好的致密性、压电常数、振动位移,表现出优良的综合性能。待分级轮使用时,其能够产生逆压电效应,将电能转换为机械能,不断的产生自我振动,有效降低陶瓷片表面出现物料黏附或堵塞的情况。

Description

一种覆铜板粉料加工用流化床气流磨机的分级轮及其制备 方法
技术领域
本申请涉及磨机分级轮技术领域,更具体地说,它涉及一种覆铜板粉料加工用流化床气流磨机的分级轮及其制备方法。
背景技术
流化床气流磨是压缩空气经拉瓦尔喷咀加速成超音速气流后射入粉碎区,使物料呈流态化,此时,气流膨胀呈流态化床悬浮沸腾而互相碰撞、摩擦或与设备内壁碰撞、摩擦而引起颗粒粉碎。粉碎后的物料被上升气流输送至分级区,由水平布置的分级轮筛选出达到粒度要求的细粉,符合粒度要求的细粉经过分级轮进入旋风分离器和除尘器收集,未达到粒度要求的粗粉返回粉碎区继续粉碎。流化床气流磨机的分级轮在对高频高速覆铜板的陶瓷粉料进行加工时,物料容易黏附在分级轮的叶片表面,严重时于叶片之间形成堵塞,影响分级轮的正常使用。
现有的防粘粉粹分级轮,包括壳体、设置壳体靠近上端部位设置为圆形腔,且壳体的内侧设置有隔板,隔板的后侧和前侧分别设置有粗料腔和细料腔,壳体的上端设置有与粗料腔连通的进料管,且粗料腔的内侧设置有不断转动的分级轮,分级轮的端口处穿过隔板与细料腔连通,分级轮的内侧设置有清理机构,清理机构包括风管,风管位于分级轮的内侧部位设置有若干个呈放射状排列的吹风板,且风管的一端穿过壳体的前侧壁与风机连接,壳体的下端设置有底座,通过设置的分级轮不断的高速转动对进料管进入的物料进行吸料,通过吸料将细小的物料吸入送进细料腔内并通过转动时的离心力将粗物料甩出,在需要对分级轮进行清理时停止投料和控制分级轮缓慢转动,然后通过风机向风管送风使得吹风板在分级轮内侧反向吹风将卡在叶片之间的物料吹出实现对分级轮的清理。该防粘粉粹分级轮,待分级轮的叶片表面黏附物料时,利用清理机构能够实现对叶片的清理,但是无法降低叶片表面出现物料黏附的情况,而且在对叶片进行清理时,不可避免的需要停产,影响生产效率。
发明内容
为了降低叶片表面出现物料黏附的情况,本申请提供一种覆铜板粉料加工用流化床气流磨机的分级轮及其制备方法。
第一方面,本申请提供一种覆铜板粉料加工用流化床气流磨机的分级轮,采用如下的技术方案:
一种覆铜板粉料加工用流化床气流磨机的分级轮,包括两个陶瓷圆环、固设在两个陶瓷圆环之间的多个陶瓷片,多个所述陶瓷片沿陶瓷圆环周向均匀分布,两个所述陶瓷圆环远离陶瓷片的端面分别固设有电极,两个所述陶瓷圆环、多个陶瓷片均采用陶瓷材料制备而成;
陶瓷材料的化学结构式为:
xPb(Mg1/3Nb2/3)O3-yPb(Sb1/2Nb1/2)O3-zPbTiO3+αwt%CoO+βwt%SiO2
式中,x、y、z分别表示摩尔百分数,αwt%、βwt%分别表示其占xPb(Mg1/3Nb2/3)O3-yPb(Sb1/2Nb1/2)O3-zPbTiO3的重量百分数,且,0.3≤x≤0.5、0.3≤y≤0.5、0.1≤z≤0.3、0≤α≤0.2、0≤β≤0.2,x+y+z=1。
本申请的陶瓷材料能够实现机械能和电能的相互转换,向两个电极通电,此时陶瓷圆环、陶瓷片处于外电场中,电畴的极化方向发生转动,且趋向于外电场方向的排列,从而使其极化,同步输出应力和应变,具有逆压电效应,将电能转换为机械能,且于陶瓷片处产生一定振幅的振动。本申请的分级轮,其在使用过程中,即在不停产的基础上,不断的产生自我振动,有效降低陶瓷片表面出现物料黏附或堵塞的情况。
本申请的陶瓷材料采用Pb(Mg1/3Nb2/3)O3、yPb(Sb1/2Nb1/2)O3、zPbTiO3三元体系,利用三元体系之间的协同增效,使其具有较高的密度、压电常数、振动位移,密度>7.6g/cm3、压电常数>660pC/N、振动位移>10μm,表现出优良的物理性能、电学性能、机械性能,而且还具有较低的黏附量,黏附量<7.5mg,有效降低陶瓷片表面出现物料黏附或堵塞的情况。
进一步的,在陶瓷材料中添加CoO,其能够有效的增加反应速率,提高烧结密度,增加致密性,而且还能够促进晶粒生长,改善晶粒显微结构,提高陶瓷材料的电学性能。添加SiO2,其有利于气孔的排出,增加致密性,而且还能够对晶粒的长大起到阻碍,起到细化晶粒的作用,也能够提高陶瓷材料的电学性能。本申请的陶瓷材料中添加CoO、SiO2,且利用两者之间的协同增效,有效增加陶瓷材料的致密性、压电常数、振动位移,还明显降低黏附量,提高分级轮的综合性能和使用效果。
可选的,两个所述陶瓷圆环、多个陶瓷片一体成型。
通过采用上述技术方案,便于陶瓷圆环和陶瓷片的加工和制备。
可选的,所述电极为铜电极,铜电极采用溅射金属铜的方法制备得到。
通过采用上述技术方案,铜具有良好的导电性,且采用溅射金属铜的方式,操作简便,而且增加铜电极和陶瓷圆环的结合强度,提高使用寿命。
可选的,所述陶瓷材料的化学结构式中,x=0.4、y=0.4、z=0.2、α=0;β=0。
通过采用上述技术方案,对陶瓷材料中的化学结构进行优化,增加陶瓷材料的压电常数、振动位移,而且降低黏附量,使陶瓷材料表现出良好的综合性能。
可选的,所述陶瓷材料的化学结构式中,x=0.4、y=0.4、z=0.2、α=0.1;β=0.1。
通过采用上述技术方案,对陶瓷材料中的化学结构进行优化,增加陶瓷材料的密度、压电常数、振动位移,提高物理性能、电学性能、机械性能,也增强高分级轮的使用效果,降低出现物料黏附或堵塞的情况。
可选的,所述分级轮还包括两个用于绝缘电极的防护圆环、两条导线,两个所述防护圆环、两条导线、两个电极一一对应,所述防护圆环固设于电极远离陶瓷圆环的端面,所述导线穿过防护圆环和电极固定连接。
通过采用上述技术方案,利用导线实现通电,利用防护圆环,增加分级轮使用的安全性。
第二方面,本申请提供一种上述所述的覆铜板粉料加工用流化床气流磨机的分级轮的制备方法,采用如下的技术方案:
一种上述所述的覆铜板粉料加工用流化床气流磨机的分级轮的制备方法,包括如下步骤:
S1、制备MgNb2O6:依据化学结构式的化学计量比称取Nb2O5、MgO,然后进行混料、球磨、烘干、预烧、降温、二次球磨、烘干,得到MgNb2O6
S2、制备SbNbO4:依据化学结构式的化学计量比称取Nb2O5、Sb2O3,然后进行混料、球磨、烘干、预烧、降温、二次球磨、烘干,得到SbNbO4
S3、制备陶瓷粉料:依据化学结构式的化学计量比称取Pb3O4、步骤S1得到的MgNb2O6、步骤S2得到的SbNbO4、TiO2、CoO、SiO2,然后进行混料、球磨、烘干、预烧、降温、二次球磨、烘干,得到陶瓷粉料;
S4、制备初成品:在陶瓷粉料中加入粘合剂,混合均匀,然后放入模具内压制成型,之后进行排胶、烧结、降温,得到具有两个陶瓷圆环、多个陶瓷片的初成品;
S5、制备分级轮:在初成品的两个陶瓷圆环于远离陶瓷片的端面分别固设电极,得到分级轮。
通过采用上述技术方案,便于分级轮的制备和控制。
可选的,步骤S1中,预烧温度为950-980℃、预烧时间为3-4h;
步骤S2中,预烧温度为950-980℃、预烧时间为3-4h;
步骤S3中,预烧温度为910-930℃、预烧时间为2-3h;
步骤S4中,排胶温度为520-550℃、排胶时间为2-3h;烧结温度为1250-1280℃、烧结时间为2-3h。
通过采用上述技术方案,对MgNb2O6、SbNbO4、陶瓷粉料的预烧温度、预烧时间进行优化,也对初成品的排胶温度、排胶时间、烧结温度、烧结时间进行优化,不仅增加分级轮的物理性能、电学性能以及机械性能,而且还使分级轮表面无裂纹、不开裂,提高产品合格率。
进一步的,步骤S1、步骤S2中的球磨、二次球磨均采用湿法球磨,球磨转速为300-400r/min、球磨时间为5-8h,球磨介质为无水乙醇,物料:球磨介质:磨球的重量配比为1:(0.6-0.8):(2-3)。
步骤S3中的球磨、二次球磨均采用湿法球磨,球磨转速为300-400r/min、球磨时间为10-15h,球磨介质为无水乙醇,物料:球磨介质:磨球的重量配比为1:(0.6-0.8):(2-3)。
陶瓷粉料的粒度D80<1μm;Nb2O5、MgO、Nb2O5、Sb2O3、Pb3O4、TiO2、CoO、SiO2的纯度均≥99.9%。
可选的,所述粘合剂为聚乙烯醇,且粘合剂的重量添加量为陶瓷粉料总重的5-10%。
通过采用上述技术方案,聚乙烯醇原料易得,降低分级轮的制备成本。而且聚乙烯醇具有良好的粘结性,能够有效的增加陶瓷粉料之间的结合强度。进一步的,对粘合剂的添加量进行优化,避免粘合剂添加量过少而影响陶瓷粉料的结合强度,也避免粘合剂的添加量过多而降低陶瓷材料的致密性和性能。
可选的,步骤S5中,待陶瓷圆环端面固设电极后,继续固设导线、防护圆环,得到分级轮。
通过采用上述技术方案,便于导线、防护圆环的安装。
综上所述,本申请至少具有以下有益效果:
1、本申请的覆铜板粉料加工用流化床气流磨机的分级轮,包括陶瓷片、陶瓷圆环、电极,且陶瓷片、陶瓷圆环采用陶瓷材料制备而成,利用陶瓷材料、电极之间的相互配合,使分级轮使用时,能够产生逆压电效应,将电能转换为机械能,不断的产生自我振动,有效降低陶瓷片表面出现物料黏附或堵塞的情况。
2、本申请的陶瓷材料,利用Pb(Mg1/3Nb2/3)O3、yPb(Sb1/2Nb1/2)O3、zPbTiO3三元体系的协同增效,使密度>7.6g/cm3、压电常数>660pC/N、振动位移>10μm,表现出优良的致密性、电学性能,提高分级轮的使用效果。
3、本申请的陶瓷材料中添加CoO、SiO2,且利用两者之间的协同增效,有效增加陶瓷材料的致密性、压电常数、振动位移,还明显降低黏附量,提高分级轮的综合性能和使用效果。
附图说明
图1是本申请实施例1中分级轮的结构示意图。
附图标记说明:1、陶瓷圆环;2、陶瓷片;3、电极;4、防护圆环。
具体实施方式
以下结合实施例对本申请作进一步详细说明。
实施例
实施例1
一种覆铜板粉料加工用流化床气流磨机的分级轮,结合图1所示,其包括两个陶瓷圆环1、固设在两个陶瓷圆环1之间的多个陶瓷片2。多个陶瓷片2沿陶瓷圆环1周向均匀分布,且两个陶瓷圆环1、多个陶瓷片2一体成型设置。两个陶瓷圆环1远离陶瓷片2的端面分别固设有电极3,即电极3的数量为两个,且电极3为铜电极。两个电极3远离陶瓷圆环1的端面分别固设有用于绝缘电极的防护圆环4,即防护圆环4的数量为两个,且两个防护圆环4和两个电极3一一对应。两个电极3上还分别固设有导线(导线在图中未示出),即导线的数量为两条,且两条导线和两个电极3一一对应,导线远离电极3的一端穿出防护圆环4。
其中,两个陶瓷圆环1、多个陶瓷片2均采用陶瓷材料制备而成,且陶瓷材料的化学结构式为:
0.4Pb(Mg1/3Nb2/3)O3-0.4Pb(Sb1/2Nb1/2)O3-0.2PbTiO3
一种覆铜板粉料加工用流化床气流磨机的分级轮的制备方法,包括如下步骤:
S1、制备MgNb2O6:依据化学结构式的化学计量比称取Nb2O5、MgO,然后进行混料、球磨、烘干。之后以30℃/h的速率,升温至960℃,预烧处理3.5h,降温至25℃,二次球磨、烘干,得到MgNb2O6
其中,球磨、二次球磨均采用湿法球磨,球磨转速为350r/min、球磨时间为6h,球磨介质为无水乙醇,物料:球磨介质:磨球的重量配比为1:0.7:2。
S2、制备SbNbO4:依据化学结构式的化学计量比称取Nb2O5、Sb2O3,然后进行混料、球磨、烘干。之后以30℃/h的速率,升温至960℃,预烧处理3.5h,降温至25℃,二次球磨、烘干,得到SbNbO4
其中,球磨、二次球磨均采用湿法球磨,球磨转速为350r/min、球磨时间为6h,球磨介质为无水乙醇,物料:球磨介质:磨球的重量配比为1:0.7:2。
S3、制备陶瓷粉料:依据化学结构式的化学计量比称取Pb3O4、步骤S1得到的MgNb2O6、步骤S2得到的SbNbO4、TiO2,然后进行混料、球磨、烘干。之后以30℃/h的速率,升温至920℃,预烧处理2.5h,降温至25℃,二次球磨、烘干,得到陶瓷粉料。
其中,球磨、二次球磨均采用湿法球磨,球磨转速为350r/min、球磨时间为12h,球磨介质为无水乙醇,物料:球磨介质:磨球的重量配比为1:0.7:2。
S4、制备初成品:在陶瓷粉料中加入粘合剂,混合均匀。然后放入模具内压制成型,且压力为160MPa、压制时间为4min。之后以30℃/h的速率,升温至530℃,排胶处理2.5h,除去粘合剂。然后以30℃/h的速率,升温至1260℃、烧结处理2.5h,降温至25℃,得到具有两个陶瓷圆环、多个陶瓷片的初成品。
其中,粘合剂为聚乙烯醇,聚乙烯醇为PVA2488,且粘合剂的重量添加量为陶瓷粉料总重的7%。
S5、制备分级轮:在初成品的两个陶瓷圆环于远离陶瓷片的端面分别溅射金属铜,金属铜形成铜电极,然后固设导线、防护圆环,得到分级轮。
实施例2
一种覆铜板粉料加工用流化床气流磨机的分级轮,其和实施例1的区别之处在于,陶瓷材料的化学结构式为:
0.3Pb(Mg1/3Nb2/3)O3-0.5Pb(Sb1/2Nb1/2)O3-0.2PbTiO3
实施例3
一种覆铜板粉料加工用流化床气流磨机的分级轮,其和实施例1的区别之处在于,陶瓷材料的化学结构式为:
0.5Pb(Mg1/3Nb2/3)O3-0.3Pb(Sb1/2Nb1/2)O3-0.2PbTiO3
实施例4
一种覆铜板粉料加工用流化床气流磨机的分级轮,其和实施例1的区别之处在于,陶瓷材料的化学结构式为:
0.45Pb(Mg1/3Nb2/3)O3-0.45Pb(Sb1/2Nb1/2)O3-0.1PbTiO3
实施例5
一种覆铜板粉料加工用流化床气流磨机的分级轮,其和实施例1的区别之处在于,陶瓷材料的化学结构式为:
0.35Pb(Mg1/3Nb2/3)O3-0.35Pb(Sb1/2Nb1/2)O3-0.3PbTiO3
实施例6
一种覆铜板粉料加工用流化床气流磨机的分级轮,其和实施例1的区别之处在于,陶瓷材料的化学结构式为:
0.4Pb(Mg1/3Nb2/3)O3-0.4Pb(Sb1/2Nb1/2)O3-0.2PbTiO3+0.1wt%CoO+0.1wt%SiO2
且,制备方法中,待称取Pb3O4时,一并称取CoO、SiO2,然后对其进行混料。
实施例7
一种覆铜板粉料加工用流化床气流磨机的分级轮,其和实施例1的区别之处在于,陶瓷材料的化学结构式为:
0.4Pb(Mg1/3Nb2/3)O3-0.4Pb(Sb1/2Nb1/2)O3-0.2PbTiO3+0.2wt%CoO+0.2wt%SiO2
且,制备方法中,待称取Pb3O4时,一并称取CoO、SiO2,然后对其进行混料。
实施例8
一种覆铜板粉料加工用流化床气流磨机的分级轮,其和实施例1的区别之处在于,陶瓷材料的化学结构式为:
0.4Pb(Mg1/3Nb2/3)O3-0.4Pb(Sb1/2Nb1/2)O3-0.2PbTiO3+0.3wt%CoO+0.3wt%SiO2
且,制备方法中,待称取Pb3O4时,一并称取CoO、SiO2,然后对其进行混料。
实施例9
一种覆铜板粉料加工用流化床气流磨机的分级轮,其和实施例1的区别之处在于,陶瓷材料的化学结构式为:
0.4Pb(Mg1/3Nb2/3)O3-0.4Pb(Sb1/2Nb1/2)O3-0.2PbTiO3+0.1wt%CoO。
且,制备方法中,待称取Pb3O4时,一并称取CoO,然后对其进行混料。
实施例10
一种覆铜板粉料加工用流化床气流磨机的分级轮,其和实施例1的区别之处在于,陶瓷材料的化学结构式为:
0.4Pb(Mg1/3Nb2/3)O3-0.4Pb(Sb1/2Nb1/2)O3-0.2PbTiO3+0.1wt%SiO2
且,制备方法中,待称取Pb3O4时,一并称取SiO2,然后对其进行混料。
对比例
对比例1
一种覆铜板粉料加工用流化床气流磨机的分级轮,其叶片为316L不锈钢。
性能检测试验
分别取实施例1-10、对比例1得到的分级轮作为试样,并对试样进行以下性能检测,检测结果如表1所示。
其中,密度采用以下方法:将试样加工成试块,试块的尺寸为5cm×5cm×2.5cm,然后采用阿基米德法进行密度的检测。
压电常数采用以下方法:将试样极化,然后进行压电常数的检测。
振动位移量采用以下方法:将试样进行通电,电压为4.5kV/mm,然后进行振动位移的检测。
黏附量采用以下方法:将试样安装在流化床气流磨机上,然后将试样进行通电,电压为4.5kV/mm,此时电能于分级轮处转换为机械能,之后向流化床气流磨机通入物料进行整机测试,连续运行48h,计算试样表面物料的黏附量。与此同时,做对照组,且对照组中未对分级轮通电。
表1检测结果
检测项目 密度/(g/cm3) 压电常数/(pC/N) 振动位移/(μm) 黏附量/(mg)
实施例1 7.72 814 13.4 3.83
实施例2 7.69 663 10.8 7.23
实施例3 7.71 782 12.1 5.51
实施例4 7.68 763 11.7 6.06
实施例5 7.73 742 11.4 6.41
实施例6 7.86 928 18.7 0.43
实施例7 7.93 884 17.4 0.65
实施例8 7.81 863 16.9 1.05
实施例9 7.78 832 14.7 2.41
实施例10 7.81 855 15.1 1.94
对比例1 / / / 56.7
对照例 / / / 32.5
从表1中可以看出,本申请的分级轮,具有较高的密度,密度为7.68-7.93g/cm3,表现出较高的致密性;而且还具有较高的压电常数以及振动位移,压电常数为663-928pC/N、振动位移为10.8-16.9μm,表现出较高的电学性能以及机械性能;同时还具有较低的黏附量,黏附量为0.43-7.23mg,明显降低分级轮出现物料黏附的情况。该分级轮,具有良好的综合效果,且在其使用过程中,不断的产生自我振动,有效降低陶瓷片表面出现物料黏附或堵塞的情况。
将实施例1和对比例1进行比较,由此可以看出,本申请的分级轮明显降低分级轮出现物料黏附的情况。再结合对照例,通过对分级轮进行通电,且使电能转换为机械能,进一步降低分级轮出现物料黏附情况。
将实施例1-5进行比较,由此可以看出,陶瓷材料的结构式为0.4Pb(Mg1/3Nb2/3)O3-0.4Pb(Sb1/2Nb1/2)O3-0.2PbTiO3时,分级轮表现出更优的综合性能。
将实施例1和实施例6、实施例9-10进行比较,由此可以看出,在陶瓷材料中添加CoO、SiO2,且利用两者之间的协同增效,有效增加陶瓷材料的致密性、压电常数、振动位移,还明显降低黏附量。再结合实施例7-8,CoO的添加量为0.4Pb(Mg1/3Nb2/3)O3-0.4Pb(Sb1/ 2Nb1/2)O3-0.2PbTiO3的0.1wt%、SiO2的添加量为0.4Pb(Mg1/3Nb2/3)O3-0.4Pb(Sb1/2Nb1/2)O3-0.2PbTiO3的0.1wt%时,陶瓷材料表现出更优的电学性能和机械性能,也提高分级轮的使用效果,降低出现物料黏附或堵塞的情况。
本具体实施例仅仅是对本申请的解释,其并不是对本申请的限制,本领域技术人员在阅读完本说明书后可以根据需要对本实施例做出没有创造性贡献的修改,但只要在本申请的权利要求范围内都受到专利法的保护。

Claims (10)

1.一种覆铜板粉料加工用流化床气流磨机的分级轮,其特征在于:包括两个陶瓷圆环(1)、固设在两个陶瓷圆环(1)之间的多个陶瓷片(2),多个所述陶瓷片(2)沿陶瓷圆环(1)周向均匀分布,两个所述陶瓷圆环(1)远离陶瓷片(2)的端面分别固设有电极(3),两个所述陶瓷圆环(1)、多个陶瓷片(2)均采用陶瓷材料制备而成;
陶瓷材料的化学结构式为:
xPb(Mg1/3Nb2/3)O3-yPb(Sb1/2Nb1/2)O3-zPbTiO3+αwt%CoO+βwt%SiO2
式中,x、y、z分别表示摩尔百分数,αwt%、βwt%分别表示其占xPb(Mg1/3Nb2/3)O3-yPb(Sb1/ 2Nb1/2)O3-zPbTiO3的重量百分数,且,0.3≤x≤0.5、0.3≤y≤0.5、0.1≤z≤0.3、0≤α≤0.2、0≤β≤0.2,x+y+z=1。
2.根据权利要求1所述的一种覆铜板粉料加工用流化床气流磨机的分级轮,其特征在于:两个所述陶瓷圆环(1)、多个陶瓷片(2)一体成型。
3.根据权利要求2所述的一种覆铜板粉料加工用流化床气流磨机的分级轮,其特征在于:所述电极(3)为铜电极,铜电极采用溅射金属铜的方法制备得到。
4.根据权利要求2所述的一种覆铜板粉料加工用流化床气流磨机的分级轮,其特征在于:所述陶瓷材料的化学结构式中,x=0.4、y=0.4、z=0.2、α=0;β=0。
5.根据权利要求2所述的一种覆铜板粉料加工用流化床气流磨机的分级轮,其特征在于:所述陶瓷材料的化学结构式中,x=0.4、y=0.4、z=0.2、α=0.1;β=0.1。
6.根据权利要求1所述的一种覆铜板粉料加工用流化床气流磨机的分级轮,其特征在于:所述分级轮还包括两个用于绝缘电极的防护圆环(4)、两条导线,两个所述防护圆环(4)、两条导线、两个电极(3)一一对应,所述防护圆环(4)固设于电极(3)远离陶瓷圆环(1)的端面,所述导线穿过防护圆环(1)和电极(3)固定连接。
7.一种如权利要求2-5中任一项所述的覆铜板粉料加工用流化床气流磨机的分级轮的制备方法,其特征在于:包括如下步骤:
S1、制备MgNb2O6:依据化学结构式的化学计量比称取Nb2O5、MgO,然后进行混料、球磨、烘干、预烧、降温、二次球磨、烘干,得到MgNb2O6
S2、制备SbNbO4:依据化学结构式的化学计量比称取Nb2O5、Sb2O3,然后进行混料、球磨、烘干、预烧、降温、二次球磨、烘干,得到SbNbO4
S3、制备陶瓷粉料:依据化学结构式的化学计量比称取Pb3O4、步骤S1得到的MgNb2O6、步骤S2得到的SbNbO4、TiO2、CoO、SiO2,然后进行混料、球磨、烘干、预烧、降温、二次球磨、烘干,得到陶瓷粉料;
S4、制备初成品:在陶瓷粉料中加入粘合剂,混合均匀,然后放入模具内压制成型,之后进行排胶、烧结、降温,得到具有两个陶瓷圆环、多个陶瓷片的初成品;
S5、制备分级轮:在初成品的两个陶瓷圆环于远离陶瓷片的端面分别固设电极,得到分级轮。
8.根据权利要求7所述的一种覆铜板粉料加工用流化床气流磨机的分级轮的制备方法,其特征在于:步骤S1中,预烧温度为950-980℃、预烧时间为3-4h;
步骤S2中,预烧温度为950-980℃、预烧时间为3-4h;
步骤S3中,预烧温度为910-930℃、预烧时间为2-3h;
步骤S4中,排胶温度为520-550℃、排胶时间为2-3h;烧结温度为1250-1280℃、烧结时间为2-3h。
9.根据权利要求7所述的一种覆铜板粉料加工用流化床气流磨机的分级轮的制备方法,其特征在于:所述粘合剂为聚乙烯醇,且粘合剂的重量添加量为陶瓷粉料总重的5-10%。
10.根据权利要求7所述的一种覆铜板粉料加工用流化床气流磨机的分级轮的制备方法,其特征在于:步骤S5中,待陶瓷圆环端面固设电极后,继续固设导线、防护圆环,得到分级轮。
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