CN116425523A - 高纯铁精矿粉湿法工业化大生产永磁铁氧体预烧料的方法 - Google Patents
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Abstract
本发明公开了高纯铁精矿粉湿法工业化大生产永磁铁氧体预烧料的方法，属于永磁铁氧体材料制备技术领域，其步骤包括：（1）将品位大于71.5%的高纯铁精矿粉通过返浮选，得到全铁品位达到72%以上的超高纯铁精矿，（2）将步骤（1）所得铁粉通过烘干窑进行烘干氧化，（3）将步骤（2）所得超高纯铁精矿粉与碳酸锶按进行配料，并加入二氧化硅0.1wt%‑0.4wt%，（4）制浆，（5）混料和磨料；（6）脱水，并将脱好水的浆料喷入回转窑中进行烧结；本发明解决了高纯铁精矿粉湿法工业化大生产永磁铁氧体预烧料过程中结窑的问题，提高了产品产量和质量；本申请的方法不需要加入氧化镧、氧化钴等稀有贵重金属，估算成本约为3000元/吨，成本大幅下降。
Description
技术领域
本发明涉及永磁铁氧体材料制备技术领域，尤其涉及一种高纯铁精矿粉湿法工业化大生产永磁铁氧体预烧料的方法。
背景技术
随着电子技术的不断发展，永磁铁氧体材料的应用越来越广泛，对于永磁铁氧体材料的需求也越来越大。高纯铁精矿粉为原料生产永磁铁氧体预烧料的方法已经有报道，比如CN 113698192 A等，但是，目前报道的方法，往往存在下述问题：
1.干法工艺生产永磁铁氧体预烧料会在各个工艺生产环节中产生大量的粉尘而影响环境和员工的身体健康
2. 由于湿法工艺无法进行链篦机的烘干氧化功能，所以湿法工艺中料粒氧化不完全会产生二价铁与料粒中的二氧化硅在低温下就生成低熔点物质硅酸亚铁，粘结在窑壁上产生结窑现象而严重影响产品产量和质量；所得产品的磁性能：剩磁400mT、矫顽力240kA/m左右，性能有待提高；
3.如前所述的，CN 113698192 A所报道的磁性能，虽然剩磁能达到了440mT，磁感矫顽力能达到330kA/m，内禀矫顽力达到了400 kA/m，但是，其由于需要加入氧化镧、氧化钴等稀有贵重金属，其估算成本大于11000元/吨，成本太高，不适用于工业化大生产，而且，采用其方法进行大生产，仍然有结窑现象产生。
发明内容
本发明的目的就在于提供一种高纯铁精矿粉湿法工业化大生产永磁铁氧体预烧料的方法，以解决上述问题。
为了实现上述目的，本发明采用的技术方案是这样的：一种高纯铁精矿粉湿法工业化大生产永磁铁氧体预烧料的方法，包括下述步骤：
（1）将品位大于71.5%的高纯铁精矿粉通过返浮选，降低硅铝含量，使全铁品位达到72%以上的超高纯铁精矿；
（2）将品位大于72%的超高纯铁精矿粉通过烘干窑进行烘干氧化；
（3）将步骤（2）所得超高纯铁精矿粉与碳酸锶按（80-90）:（10-20）比例进行配料，优选86:14的比例，并加入0.1wt%-0.4wt%的二氧化硅；
（4）再将步骤（3）配好的材料放入化浆机中进行制浆；
（5）将化浆机的浆料完全转移到球磨机中进行混料和磨料，使磨料粒度为0.9-1.1μm；
（6）将达到粒度要求的浆料进行脱水，将脱好水的浆料喷入回转窑中进行烧结，即得永磁铁氧体预烧料。
作为优选的技术方案：步骤（2）中，烘干窑进行烘干的温度为650-850℃。
本申请在湿法混料的同时，将物料的颗粒度磨到适宜的粒径，使物料更容易被氧化，在烧结窑的前端很快就发生了完全的氧化反应，并适当提高烧结温度，从而解决了结窑的问题，并提高了产品质量。
与现有技术相比，本发明的优点在于：本发明解决了高纯铁精矿粉湿法工业化大生产永磁铁氧体预烧料过程中结窑的问题，提高了产品产量和质量；本专利的混料方法是在封闭式球磨机中加水混合，不会产生粉尘。因此不会影响环境和员工的身体健康；更为重要的是，本申请的方法不需要加入氧化镧、氧化钴等稀有贵重金属，估算成本约为3000元/吨，成本大幅下降，得到的产品磁性能达到了中高端产品的品质。
实施方式
下面将结合实施例对本发明作进一步说明。
实施例
一种高纯铁精矿粉湿法工业化大生产永磁铁氧体预烧料的方法，包括下述步骤：
（1）将品位大于71.5%的高纯铁精矿粉通过返浮选，降低硅铝含量，使全铁品位达到72%以上的超高纯铁精矿；
（2）将品位大于72%的超高纯铁精矿粉通过烘干窑在760℃进行烘干氧化；
（3）将步骤（2）所得超高纯铁精矿粉与碳酸锶按86:14的质量比进行配料，并加入超高纯铁精矿粉与碳酸锶总质量0.3%的二氧化硅；
（4）再将步骤（3）配好的材料放入化浆机中进行制浆；
（5）将化浆机的浆料完全转移到球磨机中进行混料和磨料，使磨料粒度为0.91μm；
（6）将达到粒度要求的浆料进行脱水，将脱好水的浆料喷入回转窑中在1300℃进行烧结，即得永磁铁氧体预烧料。
将烧出的预烧料进行检测，磁性能达到国家电子业部SJ/T10412-2016中的Y30H-2及Y33H以上，则为合格预烧料；将烧出的合格预烧料通过连续球磨至4-5μm打包入库。
本实施例烧结时未产生结窑现象，所得产品的磁性能：剩磁：410mT ，磁感矫顽力265kA/m。
实施例
本实施例与实施例1相比，步骤（6）烧结温度为1280℃，其余与实施例1相同，结果烧结时未产生结窑现象，所得产品的磁性能：剩磁：409mT ，磁感矫顽力263kA/m。
实施例
本实施例与实施例1相比，步骤（6）的烧结温度为1320℃，其余与实施例1相同，结果烧结时未产生结窑现象，所得产品的磁性能：剩磁：406mT ，磁感矫顽力263kA/m。
实施例
本实施例与实施例1相比，步骤（5）的磨料粒度为1.1μm，其余与实施例1相同，结果烧结时未产生结窑现象，所得产品的磁性能：剩磁：405mT ，磁感矫顽力261kA/m。
对比例1
本对比例与实施例1相比，将步骤（6）的烧结温度设定为1185℃，结果产生了结窑现象，且得产品的磁性能：剩磁：361mT ，磁感矫顽力231kA/m。
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。
Claims (3)
1.一种高纯铁精矿粉湿法工业化大生产永磁铁氧体预烧料的方法，其特征在于，包括下述步骤：
（1）将品位大于71.5%的高纯铁精矿粉通过返浮选，降低硅铝含量，使全铁品位达到72%以上的超高纯铁精矿；
（2）将品位大于72%的超高纯铁精矿粉通过烘干窑进行烘干氧化；
（3）将步骤（2）所得超高纯铁精矿粉与碳酸锶按（80-90）:（10-20）的质量比进行配料，并加入0.1wt%-0.4wt%的二氧化硅；
（4）再将步骤（3）配好的材料放入化浆机中进行制浆；
（5）将化浆机的浆料完全转移到球磨机中进行混料和磨料，使磨料粒度为0.9-1.1μm；
（6）将达到粒度要求的浆料进行脱水，将脱好水的浆料喷入回转窑中进行烧结，即得永磁铁氧体预烧料。
2.根据权利要求1所述的高纯铁精矿粉湿法工业化大生产永磁铁氧体预烧料的方法，其特征在于：步骤（2）中，烘干窑进行烘干的温度为650-850℃。
3.根据权利要求1所述的高纯铁精矿粉湿法工业化大生产永磁铁氧体预烧料的方法，其特征在于：步骤（6）中，烧结温度为1280-1320℃。
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112071615A (zh) * | 2020-08-19 | 2020-12-11 | 安徽金安矿业有限公司 | 一种提高锶铁氧体预烧料磁性能的制备方法 |
| CN112209707A (zh) * | 2020-09-24 | 2021-01-12 | 横店集团东磁股份有限公司 | 一种高性能永磁铁氧体的制备方法 |
| CN112876231A (zh) * | 2021-03-09 | 2021-06-01 | 中南大学 | 一种永磁铁氧体的制备方法及永磁铁氧体 |
| CN113698192A (zh) * | 2021-09-10 | 2021-11-26 | 中南大学 | 一种以超纯磁铁精矿为原料制备永磁铁氧体的方法 |
| WO2022141975A1 (zh) * | 2020-12-29 | 2022-07-07 | 横店集团东磁股份有限公司 | 一种永磁铁氧体材料及其制备方法 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112071615A (zh) * | 2020-08-19 | 2020-12-11 | 安徽金安矿业有限公司 | 一种提高锶铁氧体预烧料磁性能的制备方法 |
| CN112209707A (zh) * | 2020-09-24 | 2021-01-12 | 横店集团东磁股份有限公司 | 一种高性能永磁铁氧体的制备方法 |
| WO2022141975A1 (zh) * | 2020-12-29 | 2022-07-07 | 横店集团东磁股份有限公司 | 一种永磁铁氧体材料及其制备方法 |
| CN112876231A (zh) * | 2021-03-09 | 2021-06-01 | 中南大学 | 一种永磁铁氧体的制备方法及永磁铁氧体 |
| CN113698192A (zh) * | 2021-09-10 | 2021-11-26 | 中南大学 | 一种以超纯磁铁精矿为原料制备永磁铁氧体的方法 |
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