CN107986773A - 一种锰锌铁氧体球料 - Google Patents

一种锰锌铁氧体球料 Download PDF

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CN107986773A
CN107986773A CN201711250939.3A CN201711250939A CN107986773A CN 107986773 A CN107986773 A CN 107986773A CN 201711250939 A CN201711250939 A CN 201711250939A CN 107986773 A CN107986773 A CN 107986773A
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zinc ferrite
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黄有东
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Nantong Sanjia Magnetic Industry Co ltd
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Abstract

本发明公开了一种锰锌铁氧体球料,所述锰锌铁氧体球料是由Fe2O3、Mn3O4和ZnO三种原料制备而成的,其含量分别为:Fe2O3 52.5~53.8mol%、ZnO 7~11.5mol%、剩余为Mn3O4;所述锰锌铁氧体球料的制备方法依次包括:生产配料、振磨、送料、喷水、造球和预烧;所述造球时,螺旋送料机的调频电机的频率为43‑50Hz;所述喷水时的喷头使用为8‑10个。通过上述方式,本发明能够显著提高锰锌铁氧体球料的密度和磁化度,改善球料的外观,同时有利于改善球料的物理和化学性能,可以避免产品的粘连,提高产品的电性能,进一步提高产品的合格率,降低生产成本。

Description

一种锰锌铁氧体球料
技术领域
本发明涉及锰锌铁氧体领域,特别是涉及一种锰锌铁氧体球料。
背景技术
目前,磁性材料已成为电子变压器的主导产品,广泛用于计算机、家用电器、逆变弧焊机、网络通讯、汽车等领域,电子产品更新换代速度加快,要求产品向环保型、节能型和高效化方向发展。这样就要求锰锌铁氧体颗粒在加工过程中,成本低,粉尘少,质量高。又要保持原来的物理和化学性能,给铁氧体球体加工带来难度。原来球料的密度在2.2-2.5g/cm3,球料的磁化度为0.9-1.2uH/g,表现出球料表面不光滑,粉尘多,在回转窑预烧后磁化度低等问题,在后道工序加工的过程中,造成产品的电性能降低、外观粘连变形等质量缺陷,已无法满足客户的使用要求。
发明内容
本发明主要解决的技术问题是:针对现有技术的不足,提供一种锰锌铁氧体球料,能够显著提高锰锌铁氧体球料的密度和磁化度,改善球料的外观,同时有利于改善球料的物理和化学性能,可以避免产品的粘连,提高产品的电性能,进一步提高产品的合格率,降低生产成本。
为解决上述技术问题,本发明采用的一个技术方案是:提供一种锰锌铁氧体球料,所述锰锌铁氧体球料是由Fe2O3、Mn3O4和ZnO三种原料制备而成的,其含量分别为:Fe2O352.5~53.8mol%、ZnO 7~11.5mol%、剩余为Mn3O4;所述锰锌铁氧体球料的制备方法依次包括:生产配料、振磨、送料、喷水、造球和预烧;所述造球时,螺旋送料机的调频电机的频率为43-50Hz;所述喷水时的喷头使用为8-10个。
在本发明一个较佳实施例中,所述预烧时的温度为960-980℃。
在本发明一个较佳实施例中,所述锰锌铁氧体球料的密度为2.6-2.75g/cm3,含水量为12-15%。
在本发明一个较佳实施例中,所述预烧后球料的饱和磁化强度为1.5-2.0uH/g。
在本发明一个较佳实施例中,所述锰锌铁氧体球料的细粉含量为2-3%。
在本发明一个较佳实施例中,所述喷水过程中加入了PEG粘结剂,浓度为4-5%。
在本发明一个较佳实施例中,所述振磨时振磨机的振动频率为28Hz。
本发明的有益效果是:通过工艺的合理优化,能够显著提高锰锌铁氧体球料的密度和磁化度,改善球料的外观,同时有利于改善球料的物理和化学性能,可以避免产品的粘连,提高产品的电性能,进一步提高产品的合格率,降低生产成本。
具体实施方式
下面对本发明的较佳实施例进行详细阐述,以使本发明的优点和特征能更易于被本领域技术人员理解,从而对本发明的保护范围做出更为清楚明确的界定。
实施例一
一种锰锌铁氧体球料,所述锰锌铁氧体球料是由Fe2O3、Mn3O4和ZnO三种原料制备而成的,其含量分别为:Fe2O3 52.5~53.8mol%、ZnO 7~11.5mol%、剩余为Mn3O4
为保证其主体含量能够充分混匀,偏差小,有利于充分固相反应,我们将这三种原材料Fe2O3、Mn3O4和ZnO先粗混:1/2 Fe2O3、1/2 Mn3O4、ZnO、1/2 Mn3O4、1/2 Fe2O3,再通过振磨、送料、喷水、造球和预烧工序,加工而成。为控制球料的含水量和密度,我们在造球工序,将螺旋送料机的电机改成调频电机,以便控制送料量的大小,喷水量的喷头由8个增加到10个,以保证其加水量的均匀和调节含水量的多少。将调频电机的频率放在50Hz,喷水的喷头使用10个,其加工成的球料的参数为:密度2.3-2.4g/cm3、细粉含量为5-7%,含水量为8-10%,
取这种球料1000Kg,经过回转窑预烧,预烧温度980℃,取样品编号1#,使用型号为UC2852LCR的电感电桥测试仪,测其饱和磁化强度和主体含量,使用X射线荧光分析仪ZSX-Ⅱ测基本含量,具体数值见表1:
表1
实施例二
一种锰锌铁氧体球料,所述锰锌铁氧体球料是由Fe2O3、Mn3O4和ZnO三种原料制备而成的,其含量分别为:Fe2O3 52.5~53.8mol%、ZnO 7~11.5mol%、剩余为Mn3O4
所述锰锌铁氧体球料的制备方法依次包括:生产配料、振磨、送料、喷水、造球和预烧。在造球工序, 将螺旋送料机的调频电机频率放在45Hz,喷水时的喷头使用10个,其加工成球料的参数为:其球料密度2.4-2.5g/cm3、细粉含量为5-7%,含水量为10-12%。
取这种球料1000Kg,经过回转窑预烧,预烧温度980℃,取样品编号2#,使用型号为UC2852LCR的电感电桥测试仪,测其饱和磁化强度,具体数值见表2:
表2
实施例三
一种锰锌铁氧体球料,所述锰锌铁氧体球料是由Fe2O3、Mn3O4和ZnO三种原料制备而成的,其含量分别为:Fe2O3 52.5~53.8mol%、ZnO 7~11.5mol%、剩余为Mn3O4
所述锰锌铁氧体球料的制备方法依次包括:生产配料、振磨、送料、喷水、造球和预烧。在造球工序, 将螺旋送料机的调频电机频率放在43Hz,喷水时的喷头使用10个,其加工成球料的参数为:其球料密度2.5-2.6g/cm3、细粉含量为5-7%,含水量为12-15%。
取这种球料1000Kg,经过回转窑预烧,预烧温度980℃,取样品编号3#,使用型号为UC2852LCR的电感电桥测试仪,测其饱和磁化强度,具体数值见表3:
表3
实施例四
一种锰锌铁氧体球料,所述锰锌铁氧体球料是由Fe2O3、Mn3O4和ZnO三种原料制备而成的,其含量分别为:Fe2O3 52.5~53.8mol%、ZnO 7~11.5mol%、剩余为Mn3O4
所述锰锌铁氧体球料的制备方法依次包括:生产配料、振磨、送料、喷水、造球和预烧。在造球工序, 将螺旋送料机的调频电机频率放在43Hz,喷水时的喷头使用8个,其加工成球料的参数为:其球料密度2.6-2.75g/cm3、细粉含量为5-7%,含水量为10-12%。
取这种球料1000Kg,经过回转窑预烧,预烧温度980℃,取样品编号4#,使用型号为UC2852LCR的电感电桥测试仪,测其饱和磁化强度,具体数值见表4:
表4
实施例五
根据实施例四的样品数值结果:虽然球料的磁化度符合标准要求。但是,经对预烧球料用20目的筛网过筛,细粉偏多,炸球较多,影响预烧的产量和内在的电性能,存在化学反应不均匀的现象,用显微镜观察球的表面仍不光滑。我们在喷水工序中,加入PEG粘结剂液体,其液体的浓度由4-5%,其它工序的生产工艺同实施例四一样:一种锰锌铁氧体球料,所述锰锌铁氧体球料是由Fe2O3、Mn3O4和ZnO三种原料制备而成的,其含量分别为:Fe2O3 52.5~53.8mol%、ZnO 7~11.5mol%、剩余为Mn3O4
所述锰锌铁氧体球料的制备方法依次包括:生产配料、振磨、送料、喷水、造球和预烧。在造球工序, 将螺旋送料机的调频电机频率放在43Hz,喷水时的喷头使用8个,其加工成球料的参数为:其球料密度2.6-2.75g/cm3、细粉含量为3-5%,含水量为10-12%。
取这种球料1000Kg,经过回转窑预烧,预烧温度980℃,取样品编号5#,使用型号为UC2852LCR的电感电桥测试仪,测其饱和磁化强度,具体数值见表5:
表5
实施例六
根据实施例五:球料的磁化度超出了标准要求,经对球料用20目的筛网过筛,还有少量的细粉,存在炸球现象,我们又将预烧工序中的温度由980℃降到960℃,其它工序的生产工艺同实施例五一样:一种锰锌铁氧体球料,所述锰锌铁氧体球料是由Fe2O3、Mn3O4和ZnO三种原料制备而成的,其含量分别为:Fe2O3 52.5~53.8mol%、ZnO 7~11.5mol%、剩余为Mn3O4
所述锰锌铁氧体球料的制备方法依次包括:生产配料、振磨、送料、喷水、造球和预烧。在造球工序, 将螺旋送料机的调频电机频率放在43Hz,喷水时的喷头使用8个,其加工成球料的参数为:其球料密度2.6-2.75g/cm3、细粉含量为3-5%,含水量为10-12%。
取这种球料1000Kg,经过回转窑预烧,预烧温度960℃,取样品编号6#,使用型号为UC2852LCR的电感电桥测试仪,测其饱和磁化强度,具体数值见表6:
表6
实施例七
根据实施例六:球料的磁化度已经符合标准要求,经对球料外观用显微镜观察,表面还不光滑,亮度不够,同时用20目的筛网过筛,细粉含量为3.5%,说明存在少量的炸球现象,我们又在振磨工序中,将振磨机的振动频率设定为28Hz,使振料的的粒度D50变小,由1.0-1.2um,变为0.7-0.9um,其它工序的生产工艺同实施例六一样:一种锰锌铁氧体球料,所述锰锌铁氧体球料是由Fe2O3、Mn3O4和ZnO三种原料制备而成的,其含量分别为:Fe2O3 52.5~53.8mol%、ZnO 7~11.5mol%、剩余为Mn3O4
所述锰锌铁氧体球料的制备方法依次包括:生产配料、振磨、送料、喷水、造球和预烧。在造球工序, 将螺旋送料机的调频电机频率放在43Hz,喷水时的喷头使用8个,其加工成球料的参数为:其球料密度2.6-2.75g/cm3、细粉含量为2-3%,含水量为10-12%。
取这种球料1000Kg,经过回转窑预烧,预烧温度960℃,取样品编号7#,经显微镜观察球料外观光滑,过20目的筛网,细粉含量为1.5%,使用型号为UC2852LCR的电感电桥测试仪,测其饱和磁化强度,具体数值见表7:
表7
从上述测试的数据中可以看出,样品6#、7#已达到锰锌铁氧体球料的密度和饱和磁化强度的要求,但6#样品还存在细粉偏多、球料表面不光滑等问题,存在炸球现象,7#样品经过振磨工艺的改进,达到预期的效果,不但提高了预烧的班产量,还降低了预烧温度,节约了能源。这种球料加工的颗粒,经客户使用后,产品外观无粘连、变形等质量问题,产品的电性能(见表8)也得到提高,产品密度也得到提高,合格率得到大幅度的提高,显示优良的球料特性。
表8
综上所述,我们经过对锰锌铁氧体球料一系列的试验和改良,球料的密度和饱和磁化强度,逐步得到提高,球料的外观由不光滑变得光滑,细粉也得到减少,增加了球料在预烧中的流动性,提高了预烧球的班产量,降低了生产成本。同时,又降低预烧温度,节能降耗。球料通过加工后的颗粒,解决了客户产品粘连、变形,满足了客户的使用要求满足了客户的使用要求。
本发明揭示了一种锰锌铁氧体球料,通过工艺的合理优化,能够显著提高锰锌铁氧体球料的密度和磁化度,改善球料的外观,同时有利于改善球料的物理和化学性能,可以避免产品的粘连,提高产品的电性能,进一步提高产品的合格率,降低生产成本。
以上所述仅为本发明的实施例,并非因此限制本发明的专利范围,凡是利用本发明说明书内容所作的等效结构或等效流程变换,或直接或间接运用在其他相关的技术领域,均同理包括在本发明的专利保护范围内。

Claims (7)

1.一种锰锌铁氧体球料,其特征在于,所述锰锌铁氧体球料是由Fe2O3、Mn3O4和ZnO三种原料制备而成的,其含量分别为:Fe2O3 52.5~53.8mol%、ZnO 7~11.5mol%、剩余为Mn3O4;所述锰锌铁氧体球料的制备方法依次包括:生产配料、振磨、送料、喷水、造球和预烧;所述造球时,螺旋送料机的调频电机的频率为43-50Hz;所述喷水时的喷头使用为8-10个。
2.根据权利要求1所述的锰锌铁氧体球料,其特征在于,所述预烧时的温度为960-980℃。
3.根据权利要求1所述的锰锌铁氧体球料,其特征在于,所述锰锌铁氧体球料的密度为2.6-2.75g/cm3,含水量为12-15%。
4.根据权利要求1所述的锰锌铁氧体球料,其特征在于,所述预烧后球料的饱和磁化强度为1.5-2.0uH/g。
5.根据权利要求1所述的锰锌铁氧体球料,其特征在于,所述锰锌铁氧体球料的细粉含量为2-3%。
6.根据权利要求1所述的锰锌铁氧体球料,其特征在于,所述喷水过程中加入了PEG粘结剂,浓度为4-5%。
7.根据权利要求1所述的锰锌铁氧体球料,其特征在于,所述振磨时振磨机的振动频率为28Hz。
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