CN112390623A - 一种提高钢包上水口座砖使用寿命的方法 - Google Patents

一种提高钢包上水口座砖使用寿命的方法 Download PDF

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CN112390623A
CN112390623A CN202011333734.3A CN202011333734A CN112390623A CN 112390623 A CN112390623 A CN 112390623A CN 202011333734 A CN202011333734 A CN 202011333734A CN 112390623 A CN112390623 A CN 112390623A
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常绍刚
金昭珍
李俊澈
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Anhui Province Xiao Country Hualong Refractory Materials Co ltd
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Abstract

本发明公开了一种提高钢包上水口座砖使用寿命的方法，原料构成为：镁砂、石墨、氮化硼、80%Al的铝硅合金粉、含碳树脂液粉、树脂液、复合抗氧化剂，其中复合抗氧化剂为金属铝粉、金属硅粉、碳化硅、碳化硼复合，将复合抗氧化剂和其他细粉进行预混合；将骨料和树脂液低速混练2～3分钟后，与经过预混合处理后的细粉料，投入中速混练20～25分钟，然后出料，放入上水口砖型模具，压力机成型，体积密度2.95～3.03g/cm3，经过电窑烘烤温度200℃，24小时，座砖出窑。本发明采用复合抗氧化剂能够提高钢包上水口座砖抗侵蚀性能、抗热震稳定性，寿命提高为现有的1.3倍左右，能够降低生产成本，节约能耗，保护环境。

Description

一种提高钢包上水口座砖使用寿命的方法
技术领域
本发明涉及一种提高钢包上水口座砖使用寿命的方法，属于炼钢设备技术领域。
背景技术
一般含碳材料的缺点是使用过程中碳容易被氧化，被氧化后材料与钢渣接触反应时对材料侵蚀速度加快，因此加入抗氧化剂，目的是增加抗氧化性；其中，使用最多的就是金属铝粉、金属硅粉、碳化硅等，其特点：价格最便宜、加入量大，即使手动计量误差范围也不大，一次搅拌一次投料，然而，这种抗氧化剂在钢包上水口使用寿命较低，主要原因是：材料热膨胀系数较高、抗热震稳定性不好、不耐侵蚀、抗钢水冲刷能力低等。
在考虑使用其他抗氧化剂时，由于这些抗氧化剂价格高，存在加入量多时成本太高，用量少时，又得不到效果等问题，为了提高生产效率，加快生产节奏，降低生产成本，需要开发一种能提高钢包上水口使用寿命的方法。
发明内容
为了解决当前技术中存在的问题，本发明的目的是提供一种提高钢包上水口座砖使用寿命的方法，该方法具有生产效率高，生产成本低，材料抗侵蚀性能强，使用寿命长等优点。
为达到上述目的，本发明所采用的技术手段是：一种提高钢包上水口座砖使用寿命的方法，原料构成为：镁砂、石墨、氮化硼、80%Al的铝硅合金粉、含碳树脂液粉、树脂液、复合抗氧化剂，其中复合抗氧化剂为金属铝粉、金属硅粉、碳化硅、碳化硼复合；
将复合抗氧化剂和其他细粉进行预混合；将骨料和树脂液低速混练2～3分钟后，与经过预混合处理后的细粉料，投入中速混练20～25分钟，然后出料，放入上水口砖型模具，压力机成型，体积密度2.95～3.03g/cm3，经过电窑烘烤温度200℃，24小时，座砖出窑。
进一步的，所述复合抗氧化剂的重量百分比为2.5%。
进一步的，所述树脂液的重量百分比为1.5～3%。
进一步的，所述座砖中材质重量百分比：氧化镁83.86%、氧化铝2.42%、氧化硅2.39%、碳8.98%；常温下体积密度3.01g/cm3 ，气孔率3.19%，常温下耐压强度52 Mpa，1400*0.5h下高温抗折强度 18Mpa，热膨胀率1.3%。
本发明的有益效果在于：采用复合抗氧化剂能够提高钢包上水口座砖抗侵蚀性能、抗热震稳定性，寿命提高为现有的1.3倍左右，能够降低生产成本，节约能耗，保护环境。
具体实施方式
一种提高钢包上水口座砖使用寿命的方法，原料构成为：镁砂、石墨、氮化硼、80%Al的铝硅合金粉、含碳树脂液粉、树脂液、复合抗氧化剂，其中复合抗氧化剂为金属铝粉、金属硅粉、碳化硅、碳化硼复合，
将复合抗氧化剂和其他细粉进行预混合；
将骨料和树脂液低速混练2～3分钟后，与经过预混合处理后的细粉料，投入中速混练20～25分钟，然后出料，放入上水口砖型模具，压力机成型，体积密度2.95～3.03g/cm3
经过电窑烘烤温度200℃，24小时，座砖出窑。
作为优选，所述复合抗氧化剂的重量百分比为2.5%。
作为优选，所述树脂液的重量百分比为1.5～3%。
作为优选，所述座砖中材质重量百分比：氧化镁83.86%、氧化铝2.42%、氧化硅2.39%、碳8.98%；常温下体积密度3.01g/cm3 ，气孔率3.19%，常温下耐压强度52 Mpa，1400*0.5h下高温抗折强度 18Mpa，热膨胀率1.3%。
现有技术的材质和本发明材质各指标性能比较表：
Figure 959530DEST_PATH_IMAGE001
将本发明材质与现有技术的目前材质在钢包中实际应用后的比较：
数据分析：钢包使用上水口砖是镁碳材质，使用次数平均12次左右，目前材质和本发明开发了产品同时进行实验，下线时检测钢包上水口孔径进行对比，从侵蚀速率判断是否能够提高抗侵蚀性。
本发明材质进行5个钢包实验，目前材质同样方法检测5个钢包，数据如下：
本发明材质使用5个钢包，结果使用一次最低0.83mm，最高1.15mm，5个钢包的平均值为0.96mm；
目前材质同样使用5个钢包实验，结果使用一次最低0.85mm，最高1.92mm，5个钢包的平均值为1.23mm。
本发明产品比目前材质抗侵蚀提供近30%，按照原有上水口12次寿命更换，同样孔径情况下，本发明的寿命可以用到15.36次；以一个月生产炉数2100次，平均炉数12次来计算，一个月需要钢包座砖175个，本发明材质只需要使用136个，减少39个，一年理论减少数量460个左右。
可见，本发明采用复合抗氧化剂能够提高钢包上水口抗侵蚀性能、抗热震稳定性，寿命提高为现有的1.3倍左右，能够降低生产成本，节约能耗，保护环境。
本发明所公开的实施例只是用于说明本申请所公开的技术特征，本领域技术人员通过简单的替换所进行的改变，仍然属于本申请所保护的范围。

Claims (4)

1.一种提高钢包上水口座砖使用寿命的方法，其特征在于，
原料构成为：镁砂、石墨、氮化硼、80%Al的铝硅合金粉、含碳树脂液粉、树脂液、复合抗氧化剂，其中复合抗氧化剂为金属铝粉、金属硅粉、碳化硅、碳化硼复合；
将复合抗氧化剂和其他细粉进行预混合；
将骨料和树脂液低速混练2～3分钟后，与经过预混合处理后的细粉料，投入中速混练20～25分钟，然后出料，放入上水口砖型模具，压力机成型，体积密度2.95～3.03g/cm3
经过电窑烘烤温度200℃，24小时，座砖出窑。
2.根据权利要求1所述的提高钢包上水口座砖使用寿命的方法，其特征在于：所述复合抗氧化剂的重量百分比为2.5%。
3.根据权利要求1所述的提高钢包上水口座砖使用寿命的方法，其特征在于：所述树脂液的重量百分比为1.5～3%。
4.根据权利要求1所述的提高钢包上水口座砖使用寿命的方法，其特征在于：所述座砖中材质重量百分比：氧化镁83.86%、氧化铝2.42%、氧化硅2.39%、碳8.98%；常温下体积密度3.01g/cm3 ，气孔率3.19%，常温下耐压强度52 Mpa，1400*0.5h下高温抗折强度 18Mpa，热膨胀率1.3%。
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