CN113416063A - 一种利用镁铬废砖制作的耐高温镁铬质浇注料 - Google Patents

一种利用镁铬废砖制作的耐高温镁铬质浇注料 Download PDF

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CN113416063A
CN113416063A CN202110607546.3A CN202110607546A CN113416063A CN 113416063 A CN113416063 A CN 113416063A CN 202110607546 A CN202110607546 A CN 202110607546A CN 113416063 A CN113416063 A CN 113416063A
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李长江
赵现华
张义先
金钊
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Haicheng Lier Maige Xita Material Co ltd
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Abstract

本发明涉及一种利用镁铬废砖制作的耐高温镁铬质浇注料，由以下原料按重量份配比而成：粒度大于3mm小于等于6mm的废镁铬砖10‑20份；粒度大于1mm小于等于3mm的废镁铬砖30‑40份；粒度大于0mm小于等于1mm的废镁铬砖20‑30份；325目的巴基斯坦精铬矿5‑15份；200目的97高纯镁砂10‑20份；200目的纯铝酸钙水泥1‑10份；200目的纯铝酸钙水泥5‑10份；325目的α‑Al2O3微粉1‑5份；硼酸1‑3份；325目的硅灰粉1‑5份；六偏磷酸钠1‑5份。优点是：实现废镁铬砖的二次利用，浇注料性能优越，降低了耐材的消耗，为冶炼厂降低了消耗。

Description

一种利用镁铬废砖制作的耐高温镁铬质浇注料
技术领域
本发明涉及一种利用镁铬废砖制作的耐高温镁铬质浇注料。
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。镁铬砖在现有的烧成带、液相区耐火材料中具有最高的性能、价格比值，并由此成为一种被广泛使用的耐火材料。
在我国以及周边国家和地区应用镁铬砖作为烧成带、液相区还是非常普遍的，每年因此而所产生的废镁铬砖数量也是非常庞大的，也因此开发出很多对废镁铬砖二次利用的方法。
发明内容
为克服现有技术的不足，本发明的目的是提供一种利用镁铬废砖制作的耐高温镁铬质浇注料，选用废镁铬砖生产该种耐高温镁铬质浇注料，可以对废镁铬砖进行二次利用，节能环保，是用于各种窑炉高温区域。
为实现上述目的，本发明通过以下技术方案实现：
一种利用镁铬废砖制作的耐高温镁铬质浇注料，由以下原料按重量份配比而成：
粒度大于3mm小于等于6mm的废镁铬砖10-20份；
粒度大于1mm小于等于3mm的废镁铬砖30-40份；
粒度大于0mm小于等于1mm的废镁铬砖20-30份；
325目的巴基斯坦精铬矿5-15份；
200目的97高纯镁砂10-20份；
200目的纯铝酸钙水泥1-10份；
200目的纯铝酸钙水泥5-10份；
325目的α-Al2O3微粉1-5份；
硼酸1-3份；
325目的硅灰粉1-5份；
六偏磷酸钠1-5份。
与现有技术相比，本发明的有益效果是：
本发明利用废镁铬砖生产浇注料，浇注料性能优越，降低了耐材的消耗，减少对我国矿山的开采，有利于我国资源长久的利用发展，使冶金高温区用料国产化，替代了国外进口的高价料，为冶炼厂降低了消耗。本发明既可以对镁铬砖进行二次利用，节能环保，又开发了具有良好高温性能的浇注料产品，能够广泛应用于各种窑炉高温区域。
具体实施方式
下面对本发明进行详细地描述，但是应该指出本发明的实施不限于以下的实施方式。
一种利用镁铬废砖制作的耐高温镁铬质浇注料，由以下原料按重量份配比而成：
粒度大于3mm小于等于6mm的废镁铬砖10-20份；
粒度大于1mm小于等于3mm的废镁铬砖30-40份；
粒度大于0mm小于等于1mm的废镁铬砖20-30份；
325目的巴基斯坦精铬矿5-15份；
200目的97高纯镁砂10-20份；
200目的纯铝酸钙水泥1-10份；
结合剂：
200目的纯铝酸钙水泥5-10份；
325目的α-Al2O3微粉1-5份；
硼酸1-3份；
325目的硅灰粉1-5份；
六偏磷酸钠1-5份。
以上原料指标如表1。
表1
Figure BDA0003094505730000021
Figure BDA0003094505730000031
以废镁铬砖为主体原料合成耐高温镁铬质浇注料的生产方法，具体步骤如下：
(1)原料粉碎筛分细磨：
将废镁铬砖用颚式破碎机破碎成大颗粒，再用辊式破碎机将其中的大颗粒粉碎成粒径为0～5mm的小颗粒；选取部分小颗粒用球磨机细磨成粒径为200目的微粉；小颗粒按粒径不同进行筛分，0-1mm、1-3mm、3-6mm的三种粒径的原料。
(2)配料：
按下述配方称取原料，见表2。
表2
Figure BDA0003094505730000032
(3)搅拌：
将配好的物料投入混料机中；保证混料的均匀，净混时间不低于12min，然后出料。
(4)出料：
出料后，质检员对该料进行抽检，抽检执行标准见表3；使用时加水搅拌均匀即可。
表3一种利用镁铬废砖制作的耐高温镁铬质浇注料的理化指标
Figure BDA0003094505730000041
成品按YB 367-75《耐火制品取样、验收、保管和运输规则》进行。

Claims (1)

1.一种利用镁铬废砖制作的耐高温镁铬质浇注料，其特征在于，由以下原料按重量份配比而成：
粒度大于3mm小于等于6mm的废镁铬砖10-20份；
粒度大于1mm小于等于3mm的废镁铬砖30-40份；
粒度大于0mm小于等于1mm的废镁铬砖20-30份；
325目的巴基斯坦精铬矿5-15份；
200目的97高纯镁砂10-20份；
200目的纯铝酸钙水泥1-10份；
200目的纯铝酸钙水泥5-10份；
325目的α-Al2O3微粉1-5份；
硼酸1-3份；
325目的硅灰粉1-5份；
六偏磷酸钠1-5份。
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Cited By (2)

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Publication number Priority date Publication date Assignee Title
CN115385681A (zh) * 2022-08-29 2022-11-25 郑州瑞泰耐火科技有限公司 一种镁铝铬尖晶石质浇注料及其制备方法
CN116102338A (zh) * 2022-12-27 2023-05-12 海城利尔麦格西塔材料有限公司 一种镁铬耐火砖及制备方法

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