WO2013174100A1 - 一种用于宽频抗电磁干扰的锰锌铁氧体材料及其制造方法 - Google Patents
一种用于宽频抗电磁干扰的锰锌铁氧体材料及其制造方法 Download PDFInfo
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Abstract
本发明公开了一种用于宽频抗电磁干扰的锰锌铁氧体材料,它按摩尔百分比包括如下配方:三氧化二铁:42.05-46.05mol%,四氧化三锰:32.51-35.51mol%,氧化锌:18.55-20.35mol%,氧化铜:1.05-1.68mol%,氧化钙:0.25-0.45mol%。其制造方法包括:配料混合→造粒→预烧→粗粉碎→二次配料细磨→喷雾造粒→三次配料、检测包装。本发明有效地降低了软磁铁氧体抗干扰材料的制造成本;具有优良的宽频抗干扰特性——从低频到高频,集镍锌、镁锌材料特性之优点,可同时替代;不含镍、镉、钴等金属元素,不会对环境造成污染,比镍锌材料更环保。
Description
一种用于宽频抗电磁干扰的锰锌铁氧体材料及其制造方法
技术领域
本发明涉及一种抗干扰磁芯材料及其制造方法技术领域, 具体涉及一种用于 宽频抗电磁干扰的锰锌铁氧体材料及其制造方法。
背景技术
当今社会已步入电子信息时代, 信息高速公路、 卫星通信、 移动通信、 计算 机应用等的高速发展, 电子产品越来越趋向高速、 宽带、 高灵敏度、 高密集度和 小型化。 但是电磁干扰现象日益严重, 并成为影响系统正常工作的明显障碍, 甚 至对人身安全以及军事保密安全造成很大危害。
软磁铁氧体属于磁介质型吸波材料, 相应的抗电磁干扰磁芯相当于低通滤波 器, 能较好的解决电源线、 信号线和连接器的高频干扰抑制问题。 软磁铁氧体抗 干扰材料主要有镍锌铁氧体和锰锌铁氧体和镁锌铁氧体三种材料, 镍锌铁氧体材 料存在制造成本高, 主要原料氧化镍每吨在 20万元左右, 同时镍锌材料含有镍、 镉、 钴等金属元素, 会对环境造成污染。 相对来说, 锰锌材料价格比较低廉, 而 且不含上述对环境有污染的金属元素。
发明内容
发明目的: 本发明的目的是为了弥补现有技术的不足, 提供一种配方独特的 用于宽频抗电磁干扰的锰锌铁氧体材料。
本发明的另一目的是为了提供如上所述的一种用于宽频抗电磁干扰的锰锌铁 氧化材料的制造方法。
本发明采用的技术方案: 一种用于宽频抗电磁干扰的锰锌铁氧体材料, 它按 摩尔百分比包括如下配方:
三氧化二铁: 42· 05-46. 05mol%,
四氧化三锰: 32. 51-35. 51mol%,
氧化锌: 18. 55-20. 35mol%,
氧化铜: 1. 05- 1. 68mol%,
氧化钙: 0. 25-0. 45mol
如上所述的用于宽频抗电磁干扰的锰锌铁氧体材料的制造方法, 它包括如下 步骤:
( 1 ) 配料混合: 将原料三氧化二铁、 四氧化三锰、 氧化锌加入锥形混料器混 合均匀, 送入振磨机强混, 使混合振磨后料粉平均粒度为 1. 1-1. 3 μ πι;
( 2 ) 造粒: 将混合料粉送入造粒机料仓, 开启造粒机, 调整轧制压力至 8-l lmPa, 使轧制的料粉颗粒呈圆柱状;
( 3 )预烧: 回转窑高温区温度升至 900-920°C, 开启送料器以 0. 3m/min的进 料速度将粒料均匀地送入回转窑, 回转窑炉管转速设为 3-5转 /min, 颗粒料在回 转窑内螺旋式前行由红色转变为黑色通过冷却区温度降至 50-60 °C ;
( 4) 粗粉碎: 开启振磨机, 开启送料器将预烧好的颗粒送入振磨机, 送料速 度控制在 10_12kg/min;
( 5 )二次配料细磨: 将粗粉碎后的粉料送入砂磨机中加入纯水, 料水比为 1 : 0. 62, 加入氧化铜和氧化钙, 砂磨时间 60-90min, 粉料转变为料浆状态粉体粒径 控制在 1. 0-1. 25 μ m;将细磨后料浆注入料浆池,然后分别加入 PVA胶水、分散剂、 消泡剂, 搅拌 10-15min后备用;
( 6 ) 喷雾造粒: 开启压力泵将二次配料细磨后的料浆以 1. 9-2. 0mPa 的压力 沿喷枪管道进入旋流室, 在旋流室内, 料浆在涡旋片内高速旋转, 形成近似自由 涡流, 通过喷枪喷嘴喷出料浆, 在干燥塔内雾化, 料浆遇到热空气, 大部分水分 蒸发, 转变为颗粒;
( 7 ) 三次配料、 检测包装: 将喷雾造粒后的颗粒料加入硬脂酸锌, 送入混料 机混合 3_5min, 检测包装。
作为优选, 所述粗粉碎后粉粒的粒径控制在 1. 0-2. 5 μ m。
作为优选, 所述二次配料细磨中的料浆池内溶质质重设定为 4500kg, 然后分 别加入 10%PVA胶水 450 kg、 分散剂 1500ml、 消泡剂 1000ml。
作为优选,所述干燥塔的进口温度设为 300-350°C,出口温度设为 140-160°C。 作为优选, 所述喷雾造粒后的颗粒粒径为 60-200目, 峰值为 120目。
作为优选, 所述硬脂酸锌的添加量为 0. 2%。
有益效果: 本发明具有如下优点: 〔1〕 有效地降低了软磁铁氧体抗干扰材料 的制造成本, 通常镍锌铁氧体抗干扰材料每吨 35000元左右, 而锰锌铁氧体抗干 扰材料每吨仅为 15000元左右;
〔2〕 具有优良的宽频抗干扰特性, 从低频到高频, 集镍锌、 镁锌材料特性之 优点, 可同时替代。
〔3〕 不含镍、镉、钴等金属元素, 不会对环境造成污染, 比镍锌材料更环保。 具体实施方式
下面结合具体实施例对本发明作进一步说明:
实施例 1 :
一种用于宽频抗电磁干扰的锰锌铁氧体材料, 按摩尔百分比它的配方组成为: 三氧化二铁 42. 05mol%, 四氧化三锰 32. 51mol %, 氧化锌 20. 35mol%, 氧化铜 1. 68 mol%, 氧化钙 0. 41mol%。
它的制备工艺为:
(1) 配料混合: 将原料三氧化二铁、 四氧化三锰、 氧化锌加入锥形混料器混 合均匀, 送入振磨机强混, 使混合振磨后料粉平均粒度为 1.1 μπι;
(2)造粒: 将混合料粉送入造粒机料仓, 开启造粒机, 调整轧制压力至 8mPa, 使轧制的料粉颗粒呈圆柱状;
(3)预烧: 回转窑高温区温度升至 900°C, 开启送料器以 0.3m/min的进料速 度将粒料均匀地送入回转窑, 回转窑炉管转速设为 3转 /min, 颗粒料在回转窑内 螺旋式前行由红色转变为黑色通过冷却区温度降至 50°C;
(4) 粗粉碎: 开启振磨机, 开启送料器将预烧好的颗粒送入振磨机, 送料速 度控制在 10kg/min, 粉粒的粒径控制在 1.0 μ m。
(5)二次配料细磨: 将粗粉碎后的粉料送入砂磨机中加入纯水, 料水比为 1: 0.62, 加入氧化铜和氧化钙, 砂磨时间 60min, 粉料转变为料浆状态粉体粒径控制 在 l.O m; 将细磨后料浆注入料浆池, 设定料浆池内溶质质重为 4500kg, 然后分 别加入 10%PVA胶水 450 kg、 分散剂 1500ml、 消泡剂 1000ml, 搅拌 lOmin后备用;
(6) 喷雾造粒: 开启压力泵将二次配料细磨后的料浆以 1.9mPa 的压力沿喷 枪管道进入旋流室, 在旋流室内, 料浆在涡旋片内高速旋转, 形成近似自由涡流, 通过喷枪喷嘴喷出料浆, 在干燥塔内雾化, 料浆遇到热空气, 大部分水分蒸发, 转变为颗粒。 塔内进口温度控制为 300°C°C, 出口温度控制为 150°C, 颗粒料粒径 为 60目;
(7)三次配料、 检测包装: 将喷雾造粒后的颗粒料加入 0.2%的硬脂酸锌, 送 入混料机混合 3min, 检测包装。
实施例 2、 实施例 3:
一种用于宽频抗电磁干扰的锰锌铁氧体材料, 按摩尔百分比它的配方组成具 体见表 1:
表 1: 锰锌铁氧体材料配方组成
Claims
1.一种用于宽频抗电磁干扰的锰锌铁氧体材料, 其特征在于: 它按摩尔百分 比包括如下配方:
三氧化二铁: 42· 05-46. 05mol%,
四氧化三锰: 32. 51-35. 51mol%,
氧化锌: 18. 55-20. 35mol%,
氧化铜: 1. 05- 1. 68mol%,
氧化钙: 0. 25-0. 45mol%o
2.—种如权利要求 1 所述的用于宽频抗电磁干扰的锰锌铁氧体材料的制造方 法, 其特征在于它包括如下步骤:
( 1 ) 配料混合: 将原料三氧化二铁、 四氧化三锰、 氧化锌加入锥形混料器混 合均匀, 送入振磨机强混, 使混合振磨后料粉平均粒度为 1. 1-1. 3 μ πι;
( 2 ) 造粒: 将混合料粉送入造粒机料仓, 开启造粒机, 调整轧制压力至 8-l lmPa, 使轧制的料粉颗粒呈圆柱状;
( 3 )预烧: 回转窑高温区温度升至 900-920°C, 开启送料器以 0. 3m/min的进 料速度将粒料均匀地送入回转窑, 回转窑炉管转速设为 3-5转 /min, 颗粒料在回 转窑内螺旋式前行由红色转变为黑色通过冷却区温度降至 50-60 °C ;
( 4) 粗粉碎: 开启振磨机, 开启送料器将预烧好的颗粒送入振磨机, 送料速 度控制在 10_12kg/min;
( 5 )二次配料细磨: 将粗粉碎后的粉料送入砂磨机中加入纯水, 料水比为 1 : 0. 62, 加入氧化铜和氧化钙, 砂磨时间 60_90min, 粉料转变为料浆状态粉体粒径 控制在 1. 0-1. 25 μ m;将细磨后料浆注入料浆池,然后分别加入 PVA胶水、分散剂、 消泡剂, 搅拌 10_15min后备用;
( 6 ) 喷雾造粒: 开启压力泵将二次配料细磨后的料浆以 1. 9-2. 0mPa 的压力 沿喷枪管道进入旋流室, 在旋流室内, 料浆在涡旋片内高速旋转, 形成近似自由 涡流, 通过喷枪喷嘴喷出料浆, 在干燥塔内雾化, 料浆遇到热空气, 大部分水分 蒸发, 转变为颗粒;
( 7 ) 三次配料、 检测包装: 将喷雾造粒后的颗粒料加入硬脂酸锌, 送入混料 机混合 3_5min, 检测包装。
3.根据权利要求 2所述的用于宽频抗电磁干扰的锰锌铁氧化材料的制造方法, 其特征在于: 所述粗粉碎后粉粒的粒径控制在 1. 0-2. 5 μ m。
4.根据权利要求 2所述的用于宽频抗电磁干扰的锰锌铁氧化材料的制造方法, 其特征在于: 所述二次配料细磨中的料浆池内溶质质重设定为 4500kg, 然后分别 加入 10%PVA胶水 450 kg、 分散剂 1500ml、 消泡剂 1000ml。
5.根据权利要求 2所述的用于宽频抗电磁干扰的锰锌铁氧体材料的制造方法, 其特征在于: 所述干燥塔的进口温度设为 300-350°C, 出口温度设为 140-160°C。
6.根据权利要求 2所述的用于宽频抗电磁干扰的锰锌铁氧体材料的制造方法, 其特征在于: 所述喷雾造粒后的颗粒粒径为 60-200目, 峰值为 120目。
7.根据权利要求 2所述的用于宽频抗电磁干扰的锰锌铁氧体材料的制造方法,
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