CN111675535B - 一种高性能避雷器阀片焙烧用球形垫料及其制备工艺 - Google Patents

一种高性能避雷器阀片焙烧用球形垫料及其制备工艺 Download PDF

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CN111675535B
CN111675535B CN202010576370.5A CN202010576370A CN111675535B CN 111675535 B CN111675535 B CN 111675535B CN 202010576370 A CN202010576370 A CN 202010576370A CN 111675535 B CN111675535 B CN 111675535B
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吕宏
王利民
侯冰
朱永军
刘杰峰
杨玉娟
李晓萌
李冠雄
陈琦
庄鹏飞
李志刚
刘雨萌
颜世亮
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Abstract

本发明公开了一种高性能避雷器阀片焙烧用球形垫料及其制备工艺，该垫料包括如下组份及重量百分比：氧化铋5％～10％、氧化锑1％～5％、高性能避雷器阀片造粒微粉85％～94％；该制备工艺包括如下步骤：按配方比例配料―粉碎混合―成球盘成球―筛选―煅烧―过筛。该球形垫料以氧化铋、氧化锑、高性能避雷器阀片造粒微粉为配方主体，严格控制氧化铋、氧化锑含量，采用成球盘成球技术成型、焙烧而成，用于高性能避雷器阀片焙烧使用，为高性能避雷器阀片达到优越性能提供了保证。

Description

一种高性能避雷器阀片焙烧用球形垫料及其制备工艺
技术领域
本发明属于避雷器阀片技术领域，涉及一种高性能避雷器阀片焙烧用球形垫料及其制备工艺。
背景技术
输变电技术迅速发展，超高压交流输变电技术和直流输变电技术成为了我国电力系统中的主要项目，相应的高性能直流、交流电阻片得到了广泛应用。传统工艺避雷器阀片生产制作使用的垫料，一般采用废阀片经粉碎、过筛、煅烧制作而成，这种垫料尖角较多，垫料的尖角常导致与其接触的阀片表面出现孔洞缺陷，很难去除，降低了阀片质量和生产合格率，这种垫料经球磨再加工后形状可以得到改善，但废料多、工作环境粉尘大，且垫料生产效率极低；同时高性能直流、交流避雷器阀片焙烧过程中需要的气氛环境对垫料要求较高，氧化铋和氧化锑含量的变化影响着焙烧后阀片的基本性能，采用传统垫料烧成的阀片性能参数分散较大、合格率较低，阀片可利用率更低；另外，生产避雷器阀片的喷雾造粒工序会产生大量高性能避雷器阀片造粒微粉，该造粒微粉通常按照废料处理，造成了资源的浪费，也增加了避雷器阀片生产成本。
发明内容
本发明的目的是提供一种能有效克服现有球形垫料及制备工艺中的诸多不足的高性能避雷器阀片焙烧用球形垫料及其制备工艺。
本发明采用的技术方案为：
本发明——一种高性能避雷器阀片焙烧用球形垫料，包括如下组份及重量百分比：氧化铋5％～10％、氧化锑1％～5％、高性能避雷器阀片造粒微粉85％～94％。
上述高性能避雷器阀片造粒微粉含有如下组份及重量百分比：氧化铋3％～5％、氧化锑1％～5％、余量为氧化锌。
本发明——一种高性能避雷器阀片焙烧用球形垫料制备工艺，包括如下步骤：按配方比例配料―粉碎混合―成球盘成球―筛选―煅烧―过筛。
上述筛选步骤选用8—12目筛筛选，8目筛上物料及12目筛下物料重新返回粉碎混合步骤。
上述煅烧步骤的煅烧温度为1150±30℃。
本发明具有如下优点：
1、由于合理的调控了氧化铋、氧化锑比例，使得高性能避雷器阀片焙烧过程所需气氛得到保证，阀片产品参数更优良、更稳定，耐用效果好，阀片性能达到高性能避雷器技术要求，阀片生产质量、合格率明显提升。
2、由于利用了高性能避雷器阀片造粒微粉，使其变废为宝，极大的减少了资源的浪费，也降低了高性能避雷器阀片生产成本。
3、由于制备工艺中采用了成球盘造粒成型技术，使得产品具有良好的强度和球形度、粒径均匀、更耐用，阀片生产合格率、利用率明显提升。
4、由于制备工艺中的筛选步骤中的筛余物料重新返回粉碎混合步骤，保证了产品粒径均匀、稳定，更适应高性能避雷器阀片焙烧需要。
具体实施方式
实施例1：高性能避雷器阀片焙烧用球形垫料，包括如下组份及重量百分比：氧化铋6％、氧化锑2％、高性能避雷器阀片造粒微粉92％，其制备工艺包括如下步骤：
按上述配方用电子秤分别称取氧化铋、氧化锑、高性能避雷器阀片造粒微粉，用粉碎机粉碎混合1小时。
用去离子水配置1.5％的粘结剂溶液，按比例加入成球盘自动喷雾装置中。
将混和均匀的物料加入成球盘中，按工艺要求设定设备参数，开动设备造粒成球。
成球后物料过振动筛进行筛选，筛号选择8目筛和12目筛，8目筛上和12目筛下物料重新返回粉碎混合步骤。
经成球盘造粒完成的物料在烘房中烘干，水分小于0.1％后送入炉中1150℃煅烧。
煅烧后的物料再次过筛，除掉团粒和碎料，至此高性能避雷器阀片焙烧用球形垫料制作完成，装入高性能避雷器阀片焙烧用匣钵中使用。
本实施例制备的高性能避雷器阀片焙烧用球形垫料球形度好、颗粒均匀，采用该批次球形垫料生产的高性能避雷器阀片性能统计如下：
产品批号 规格 合格率％ 利用率％
201908001 D105 99％ 98％
实施例2：高性能避雷器阀片焙烧用球形垫料，包括如下组份及重量百分比：氧化铋5％、氧化锑1％、高性能避雷器阀片造粒微粉94％，其制备工艺包括如下步骤：
按上述配方用电子秤分别称取氧化铋、氧化锑、高性能避雷器阀片造粒微粉，用粉碎机粉碎混合1小时。
用去离子水配置2.0％的粘结剂溶液，按比例加入成球盘自动喷雾装置中。
将混和均匀的物料加入成球盘中，按工艺要求设定设备参数，开动设备造粒成球。
成球后物料过振动筛进行筛选，筛号选择8目筛和12目筛，8目筛上和12目筛下物料重新返回粉碎混合步骤。
经成球盘造粒完成的物料在烘房中烘干，水分小于0.1％后送入炉中1180℃煅烧。
煅烧后的物料再次过筛，除掉团粒和碎料，至此高性能避雷器阀片焙烧用球形垫料制作完成，装入高性能避雷器阀片焙烧用匣钵中使用。
本实施例制备的高性能避雷器阀片焙烧用球形垫料球形度好、颗粒均匀，采用该批次球形垫料生产的高性能避雷器阀片性能统计如下：
产品批号 规格 合格率％ 利用率％
201908155 φ136 99％ 98％
实施例3：高性能避雷器阀片焙烧用球形垫料，包括如下组份及重量百分比：氧化铋10％、氧化锑5％、高性能避雷器阀片造粒微粉85％，其制备工艺包括如下步骤：
按上述配方用电子秤分别称取氧化铋、氧化锑、高性能避雷器阀片造粒微粉，用粉碎机粉碎混合1小时。
用去离子水配置1.0％的粘结剂溶液，按比例加入成球盘自动喷雾装置中。
将混和均匀的物料加入成球盘中，按工艺要求设定设备参数，开动设备造粒成球。
成球后物料过振动筛进行筛选，筛号选择8目筛和12目筛，8目筛上和12目筛下物料重新返回粉碎混合步骤。
经成球盘造粒完成的物料在烘房中烘干，水分小于0.1％后送入炉中1120℃煅烧。
煅烧后的物料再次过筛，除掉团粒和碎料，至此高性能避雷器阀片焙烧用球形垫料制作完成，装入高性能避雷器阀片焙烧用匣钵中使用。
本实施例制备的高性能避雷器阀片焙烧用球形垫料球形度好、颗粒均匀，采用该批次球形垫料生产的高性能避雷器阀片性能统计如下：
产品批号 规格 合格率％ 利用率％
201901001 D115 99％ 98％
本发明通过上述结合实施例对本发明做了进一步叙述，但本发明不限于上述实施方式，在本技术领域的相关技术人员还可以在不脱离本发明宗旨的范围内做出各种改变。

Claims (1)

1.一种高性能避雷器阀片焙烧用球形垫料，包括如下组份及重量百分比：氧化铋5％～10％、氧化锑1％～5％、高性能避雷器阀片造粒微粉85％～94％；所述高性能避雷器阀片造粒微粉含有如下组份及重量百分比：氧化铋3％～5％、氧化锑1％～5％、余量为氧化锌。
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