CN107235712A - 一种rh精炼炉炉底用镁铬质捣打料及其生产方法 - Google Patents

一种rh精炼炉炉底用镁铬质捣打料及其生产方法 Download PDF

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CN107235712A
CN107235712A CN201710586934.1A CN201710586934A CN107235712A CN 107235712 A CN107235712 A CN 107235712A CN 201710586934 A CN201710586934 A CN 201710586934A CN 107235712 A CN107235712 A CN 107235712A
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furnace
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金钊
张义先
董会彬
陈东明
尹斌
王健骁
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Haicheng Zhongxing High-Grade Magnesia Brick Co Ltd
HAICHENG ZHONGXING MAGNESIA SYNTHETIC MATERIALS CO Ltd
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Abstract

本发明涉及一种RH精炼炉炉底用镁铬质捣打料及其生产方法,所述镁铬质捣打料由Cr20砂、南非铬矿、MgO≥96.5%高纯镁砂、阿曼铬矿、巴西铬矿组成,加入结合剂后混练而成。所述结合剂由无水硫酸镁、柠檬酸、硼酸、柠檬酸钠和六偏磷酸钠组成。本发明采用多种含铬原料与高纯镁砂通过结合剂混练制成镁铬质捣打料,具有耐侵蚀性好,使用寿命长的优点,完全可以取代国外进口产品实现冶金电炉用耐火材料的国产化,降低了企业生产成本。

Description

一种RH精炼炉炉底用镁铬质捣打料及其生产方法
技术领域
本发明涉及耐火材料技术领域,尤其涉及一种RH精炼炉炉底用镁铬质捣打料及其生产方法。
背景技术
镁铬质耐火材料是一种含三氧化二铬的镁质耐火材料,氧化铬通过固熔于方镁石和形成低膨胀的镁铬尖晶石,可增大液相对耐火相的润湿角,提高直接结合程度,生成理想的方镁石-镁铬尖晶石-微裂纹复合结构,使镁铬质耐火材料具有良好的荷重软化温度、高温强度、抗侵蚀性、热震稳定性、较低的导热率和较好的挂窑皮性。
目前我国RH精炼炉炉底用的镁铬质耐火材料普遍依靠进口,其成本高,增加了企业生产运行负担。
发明内容
本发明提供了一种RH精炼炉炉底用镁铬质捣打料及其生产方法,采用多种含铬原料与高纯镁砂通过结合剂混练制成镁铬质捣打料,具有耐侵蚀性好,使用寿命长的优点,完全可以取代国外进口产品实现冶金电炉用耐火材料的国产化,降低了企业生产成本。
为了达到上述目的,本发明采用以下技术方案实现:
一种RH精炼炉炉底用镁铬质捣打料,其特征在于,所述镁铬质捣打料由以下原料按重量份比例制成:
Cr20砂:3<粒度≤5mm,1~20份;
1<粒度≤3mm,1~15份;
0<粒度≤1mm,1~15份;
南非铬矿:200目,5~10份;
MgO≥96.5%高纯镁砂:1<粒度≤3mm,5~10份;
0<粒度≤1mm,1~10份;
200目,10~20份;
阿曼铬矿:3<粒度≤5mm,5~10份;
巴西铬矿:1<粒度≤3mm,1~20份;
0<粒度≤1mm,1~15份;
200目,1~10份;
结合剂:5~23份。
所述结合剂按重量份比例由以下组分组成:无水硫酸镁1~5份,柠檬酸1~5份,硼酸1~3份,柠檬酸钠1~5份,六偏磷酸钠1~5份。
所述的一种RH精炼炉炉底用镁铬质捣打料的生产方法,包括如下步骤:
1)原料粉碎、筛分、细磨;
将原料按粒度要求分别进行破碎,先用颚式破碎机破碎成大颗粒,再用辊式破碎机将大颗粒粉碎成粒度为0~5mm的小颗粒;由多种粒度组成的原料将小颗粒进行筛分,分为0~1mm、1~mm、3~5mm三种粒度,200目的原料微粉采用小颗粒用球磨机细磨而成;
2)配料:
按配方分别称取各种粒度的不同原料,备用;
3)搅拌:
将配好的物料分别投入混料机中搅拌,净混时间不少于12min,保证混料均匀,然后出料;
4)检验:
对所生产的镁铬质捣打料进行检验,其理化指标见附表。
附表
与现有技术相比,本发明的有益效果是:
1)本发明所生产的RH精炼炉炉底用镁铬质捣打料,采用多种含铬原料与高纯镁砂通过结合剂混练制成,其耐侵蚀性能优越,使用寿命长,从会降低了耐火材料的消耗,有利于减少我国矿山资源的开采,实现资源更长久的利用发展;
2)本发明所述RH精炼炉炉底用镁铬质捣打料,实现了冶金电炉用耐火材料国产化,完全可替代国外进口的高价耐火材料,可为国家节约大量的外汇资金,有利于提高钢厂炉龄,降低吨钢消耗,从而增加企业生产效益。
具体实施方式
本发明所述的是一种RH精炼炉炉底用镁铬质捣打料,所述镁铬质捣打料由以下原料按重量份比例制成:
Cr20砂:3<粒度≤5mm,1~20份;
1<粒度≤3mm,1~15份;
0<粒度≤1mm,1~15份;
南非铬矿:200目,5~10份;
MgO≥96.5%高纯镁砂:1<粒度≤3mm,5~10份;
0<粒度≤1mm,1~10份;
200目,10~20份;
阿曼铬矿:3<粒度≤5mm,5~10份;
巴西铬矿:1<粒度≤3mm,1~20份;
0<粒度≤1mm,1~15份;
200目,1~10份;
结合剂:5~23份。
所述结合剂按重量份比例由以下组分组成:无水硫酸镁1~5份,柠檬酸1~5份,硼酸1~3份,柠檬酸钠1~5份,六偏磷酸钠1~5份。
如权利要求1所述的一种RH精炼炉炉底用镁铬质捣打料的生产方法,包括如下步骤:
1)原料粉碎、筛分、细磨;
将原料按粒度要求分别进行破碎,先用颚式破碎机破碎成大颗粒,再用辊式破碎机将大颗粒粉碎成粒度为0~5mm的小颗粒;由多种粒度组成的原料将小颗粒进行筛分,分为0~1mm、1~mm、3~5mm三种粒度,200目的原料微粉采用小颗粒用球磨机细磨而成;
2)配料:
按配方分别称取各种粒度的不同原料,备用;
3)搅拌:
将配好的物料分别投入混料机中搅拌,净混时间不少于12min,保证混料均匀,然后出料;
4)检验:
对所生产的镁铬质捣打料进行检验,其理化指标见附表。
附表
以下实施例在以本发明技术方案为前提下进行实施,给出了详细的实施方式和具体的操作过程,但本发明的保护范围不限于下述的实施例。下述实施例中所用方法如无特别说明均为常规方法。
【实施例】
本实施例通过4个具体实施例具体说明一种RH精炼炉炉底用镁铬质捣打料的生产方法。
将原料按粒度要求分别进行破碎,先用颚式破碎机破碎成大颗粒,再用辊式破碎机将大颗粒粉碎成粒度为0~5mm的小颗粒;由多种粒度组成的原料将小颗粒进行筛分,分为0~1mm、1~mm、3~5mm三种粒度,200目的原料微粉采用小颗粒用球磨机细磨而成;
各实施例中原料的实际用量如表1所示:
表1
将配好的物料分别投入混料机中搅拌,净混时间不少于12min,保证混料均匀,然后出料;对所生产的镁铬质捣打料进行检验,其理化指标如表2所示:
表2
从以上检验结果可以看出,本发明实施例所生产的RH精炼炉炉底用镁铬质捣打料与常规镁质捣打料相比,其加热永久性线变化更小,耐压强度和体积密度更高,因此耐侵蚀性更好。
以上所述,仅为本发明较佳的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,根据本发明的技术方案及其发明构思加以等同替换或改变,都应涵盖在本发明的保护范围之内。

Claims (3)

1.一种RH精炼炉炉底用镁铬质捣打料,其特征在于,所述镁铬质捣打料由以下原料按重量份比例制成:
Cr20砂:3<粒度≤5mm,1~20份;
1<粒度≤3mm,1~15份;
0<粒度≤1mm,1~15份;
南非铬矿:200目,5~10份;
MgO≥96.5%高纯镁砂:1<粒度≤3mm,5~10份;
0<粒度≤1mm,1~10份;
200目,10~20份;
阿曼铬矿:3<粒度≤5mm,5~10份;
巴西铬矿:1<粒度≤3mm,1~20份;
0<粒度≤1mm,1~15份;
200目,1~10份;
结合剂:5~23份。
2.根据权利要求1所述的一种RH精炼炉炉底用镁铬质捣打料,其特征在于,所述结合剂按重量份比例由以下组分组成:无水硫酸镁1~5份,柠檬酸1~5份,硼酸1~3份,柠檬酸钠1~5份,六偏磷酸钠1~5份。
3.如权利要求1所述的一种RH精炼炉炉底用镁铬质捣打料的生产方法,其特征在于,包括如下步骤:
1)原料粉碎、筛分、细磨;
将原料按粒度要求分别进行破碎,先用颚式破碎机破碎成大颗粒,再用辊式破碎机将大颗粒粉碎成粒度为0~5mm的小颗粒;由多种粒度组成的原料将小颗粒进行筛分,分为0~1mm、1~mm、3~5mm三种粒度,200目的原料微粉采用小颗粒用球磨机细磨而成;
2)配料:
按配方分别称取各种粒度的不同原料,备用;
3)搅拌:
将配好的物料分别投入混料机中搅拌,净混时间不少于12min,保证混料均匀,然后出料;
4)检验:
对所生产的镁铬质捣打料进行检验,其理化指标见附表。
附表
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Cited By (6)

* Cited by examiner, † Cited by third party
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CN107827445A (zh) * 2017-11-22 2018-03-23 海城利尔麦格西塔材料有限公司 一种镁铬质耐火泥浆及其生产方法
CN107903040A (zh) * 2017-11-22 2018-04-13 海城利尔麦格西塔材料有限公司 一种用于钢水精炼炉炉底的镁铬质捣打料及生产方法
CN108249936A (zh) * 2018-03-12 2018-07-06 海城市中兴镁质合成材料有限公司 一种转炉用镁铬质喷补料及其制备方法
CN109503128A (zh) * 2018-12-28 2019-03-22 海城利尔麦格西塔材料有限公司 一种高强度转炉炉口用镁质浇注料及制备方法
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CN110845247A (zh) * 2019-12-18 2020-02-28 攀枝花钢城集团有限公司 低成本rh用捣打料及其制备方法

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CN107827445A (zh) * 2017-11-22 2018-03-23 海城利尔麦格西塔材料有限公司 一种镁铬质耐火泥浆及其生产方法
CN107903040A (zh) * 2017-11-22 2018-04-13 海城利尔麦格西塔材料有限公司 一种用于钢水精炼炉炉底的镁铬质捣打料及生产方法
CN108249936A (zh) * 2018-03-12 2018-07-06 海城市中兴镁质合成材料有限公司 一种转炉用镁铬质喷补料及其制备方法
CN109503128A (zh) * 2018-12-28 2019-03-22 海城利尔麦格西塔材料有限公司 一种高强度转炉炉口用镁质浇注料及制备方法
CN110734272A (zh) * 2019-12-09 2020-01-31 辽宁中镁控股股份有限公司 一种新型镁钙质喷补捣打料及其制备方法
CN110845247A (zh) * 2019-12-18 2020-02-28 攀枝花钢城集团有限公司 低成本rh用捣打料及其制备方法

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