CN111499358A - 一种镁铬质干式防渗捣打料 - Google Patents

一种镁铬质干式防渗捣打料 Download PDF

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CN111499358A
CN111499358A CN202010318915.2A CN202010318915A CN111499358A CN 111499358 A CN111499358 A CN 111499358A CN 202010318915 A CN202010318915 A CN 202010318915A CN 111499358 A CN111499358 A CN 111499358A
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magnesium
ramming mass
magnesite
chromium dry
chromium
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朱维忠
李江平
王春华
刘大方
舒波
余彬
岳晓华
张鑫
陈习堂
王恩志
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Chuxiong Dianzhong Nonferrous Metal Co ltd
Songming Zhongxin New Material Technology Co ltd
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Abstract

本发明涉及一种镁铬质干式防渗捣打料，属于耐火材料生产技术领域，耐火捣打料作为一种不定型耐火材料，所述镁铬质干式防渗捣打料采用水硬性结合剂产生强度，含水结合剂中的水分会对炉衬产生水化反应而降低使用效果，实施例1采用不含水的捣打料结合剂能产生较大强度，在筑炉施工中不带入水分，能提高炉衬使用效果，延长炉窑使用寿命。

Description

一种镁铬质干式防渗捣打料
技术领域
本发明属于耐火材料生产技术领域，具体地说，本发明涉及一种镁铬质干式防渗捣打料。
背景技术
耐火材料是高温炉窑炉衬关键性材料，决定炉窑使用寿命及使用效果。特别是有色冶炼用高温炉窑，由于冶炼渣系多为碱性渣，所以炉衬大多采用碱性耐火材料。一般炉衬结构是用定型材料（烧结镁砖或镁铬砖）作为工作层，用不定型耐火材料（镁铬质捣打料）作为防渗层，但碱性耐火材料较易水化，MgO+H2O=Mg(OH)2，并伴随较大的体积膨胀，导致耐火材料性能下降，炉窑炉衬结构损坏。
发明内容
为克服背景技术中存在的问题，本发明公开了一种镁铬质干式防渗捣打料，本发明采用不含水的捣打料结合剂能产生较大强度，在筑炉施工中不带入水分，能提高炉衬使用效果，延长炉窑使用寿命。
为实现上述目的，本发明是通过如下技术方案实现的：
所述捣打料主要由骨料、粉料、结合剂、外加剂四部分组成，骨料用量占59％-65％，粉料用量25-30％，结合剂用量为5-10％，外加剂用量占2-5％。
所述骨料的原料是冶金镁砂和废旧砖镁铬砂，冶金镁砂MgO含量≥95％，冶金镁砂与废旧砖镁铬砂以3:2的比例混合。
所述冶金镁砂和废旧砖镁铬砂的粒径≤10mm，其中5 mm～10 mm占骨料25％，3 mm～5 mm占骨料55％，3 mm以下占骨料20％。
所述粉料采用冶金镁铬砂加工，细度≤0.09mm。
所述结合剂采用热硬性酚醛树脂粉。
所述外加剂主要是氧化铁粉，细度≤0.25mm。
所述镁铬质干式防渗捣打料的制备方法为：
（1）骨料按照比例混合，混合后的骨料进行粗破，粗破后过筛，筛上料再次进行粗破，筛下料及再次进行粗破的物料进行粒度分级；
（2）粉料进行粗破，粗破后过筛，筛上料再次进行粗破，筛下料及再次进行粗破的物料进行粒度分级；
（2）粒度分级后的骨料及粉料进行细破备用；
（3）细破后的物料中加入结合剂、外加剂混拌；
（4）混拌后的物料进行密封包装。
本发明的有益效果：本发明采用不含水的捣打料结合剂能产生较大强度，在筑炉施工中不带入水分，能提高炉衬使用效果，延长炉窑使用寿命。
附图说明
图1为镁铬质干式防渗捣打料的生产流程图。
具体实施方式
为使上述目的、技术方案和有益效果更加清晰明确，以下结合实施例对本发明做具体说明。
实施例1：
所述捣打料主要由骨料、粉料、结合剂、外加剂四部分组成，骨料用量占63％，骨料的原料是冶金镁砂和废旧砖镁铬砂，冶金镁砂MgO含量98％，冶金镁砂与废旧砖镁铬砂以3:2的比例混合，冶金镁砂和废旧砖镁铬砂的粒径为10mm，其中6 mm占骨料25％，4 mm占骨料55％，3 mm以下占骨料20％，粉料用量26％，粉料采用冶金镁铬砂加工，细度0.07mm，结合剂用量为8％，结合剂采用热硬性酚醛树脂粉，外加剂用量占3％，外加剂主要是氧化铁粉，细度0.25mm；
所述镁铬质干式防渗捣打料的制备方法为：
（1）骨料按照比例混合，混合后的骨料进行粗破，粗破后过筛，筛上料再次进行粗破，筛下料及再次进行粗破的物料进行粒度分级；
（2）粉料进行粗破，粗破后过筛，筛上料再次进行粗破，筛下料及再次进行粗破的物料进行粒度分级；
（2）粒度分级后的骨料及粉料进行细破备用；
（3）细破后的物料中加入结合剂、外加剂混拌；
（4）混拌后的物料进行密封包装。
实施例2：
所述捣打料主要由骨料、粉料、结合剂、外加剂四部分组成，骨料用量占60％，骨料的原料是冶金镁砂和废旧砖镁铬砂，冶金镁砂MgO含量95％，冶金镁砂与废旧砖镁铬砂以3:2的比例混合，冶金镁砂和废旧砖镁铬砂的粒径为10mm，其中6 mm占骨料25％，4 mm占骨料55％，3 mm以下占骨料20％，粉料用量20％，粉料采用冶金镁铬砂加工，细度0.07mm，结合剂用量为15％，结合剂采用热硬性酚醛树脂粉，外加剂用量占5％，外加剂主要是氧化铁粉，细度0.25mm；
所述镁铬质干式防渗捣打料的制备方法为：
（1）骨料按照比例混合，混合后的骨料进行粗破，粗破后过筛，筛上料再次进行粗破，筛下料及再次进行粗破的物料进行粒度分级；
（2）粉料进行粗破，粗破后过筛，筛上料再次进行粗破，筛下料及再次进行粗破的物料进行粒度分级；
（2）粒度分级后的骨料及粉料进行细破备用；
（3）细破后的物料中加入结合剂、外加剂混拌；
（4）混拌后的物料进行密封包装。
实施例3：
所述捣打料主要由骨料、粉料、结合剂、外加剂四部分组成，骨料用量占65％，粉料用量30％，结合剂用量为3％，外加剂用量占2％。所述捣打料主要由骨料、粉料、结合剂、外加剂四部分组成，骨料用量占65％，骨料的原料是冶金镁砂和废旧砖镁铬砂，冶金镁砂MgO含量95％，冶金镁砂与废旧砖镁铬砂以3:2的比例混合，冶金镁砂和废旧砖镁铬砂的粒径为10mm，其中6 mm占骨料25％，4 mm占骨料55％，3 mm以下占骨料20％，粉料用量30％，粉料采用冶金镁铬砂加工，细度0.07mm，结合剂用量为3％，结合剂采用热硬性酚醛树脂粉，外加剂用量占2％，外加剂主要是氧化铁粉，细度0.25mm；
所述镁铬质干式防渗捣打料的制备方法为：
（1）骨料按照比例混合，混合后的骨料进行粗破，粗破后过筛，筛上料再次进行粗破，筛下料及再次进行粗破的物料进行粒度分级；
（2）粉料进行粗破，粗破后过筛，筛上料再次进行粗破，筛下料及再次进行粗破的物料进行粒度分级；
（2）粒度分级后的骨料及粉料进行细破备用；
（3）细破后的物料中加入结合剂、外加剂混拌；
（4）混拌后的物料进行密封包装。
效果分析：
实施例1、实施例2、实施例3综合对比，在同等条件下，实施例1为最优方案，耐火捣打料作为一种不定型耐火材料，本发明采用水硬性结合剂产生强度，含水结合剂中的水分会对炉衬产生水化反应而降低使用效果，实施例1采用不含水的捣打料结合剂能产生较大强度，在筑炉施工中不带入水分，能提高炉衬使用效果，延长炉窑使用寿命。
最后说明的是，以上优选实施例仅用以说明本发明的技术方案而非限制，尽管通过上述优选实施例已经对本发明进行了详细的描述，但本领域技术人员应当理解，可以在形式上和细节上对其作出各种各样的改变，而不偏离本发明权利要求书所限定的范围。

Claims (7)

1.一种镁铬质干式防渗捣打料，其特征在于，所述捣打料主要由骨料、粉料、结合剂、外加剂四部分组成，骨料用量占59％-65％，粉料用量25-30％，结合剂用量为5-10％，外加剂用量占2-5％。
2.根据权利要求1中所述的一种镁铬质干式防渗捣打料，其特征在于：所述骨料的原料是冶金镁砂和废旧砖镁铬砂，冶金镁砂MgO含量≥95％，冶金镁砂与废旧砖镁铬砂以3:2的比例混合。
3.根据权利要求2中所述的一种镁铬质干式防渗捣打料，其特征在于：所述冶金镁砂和废旧砖镁铬砂的粒径≤10mm，其中5 mm～10 mm占骨料25％，3 mm～5 mm占骨料55％，3 mm以下占骨料20％。
4.根据权利要求1中所述的一种镁铬质干式防渗捣打料，其特征在于：所述粉料采用冶金镁铬砂加工，细度≤0.09mm。
5.根据权利要求1中所述的一种镁铬质干式防渗捣打料，其特征在于：所述结合剂采用热硬性酚醛树脂粉。
6.根据权利要求1中所述的一种镁铬质干式防渗捣打料，其特征在于：所述外加剂主要是氧化铁粉，细度≤0.25mm。
7.根据权利要求1中所述的一种镁铬质干式防渗捣打料，其特征在于：所述镁铬质干式防渗捣打料的制备方法为：
（1）骨料按照比例混合，混合后的骨料进行粗破，粗破后过筛，筛上料再次进行粗破，筛下料及再次进行粗破的物料进行粒度分级；
（2）粉料进行粗破，粗破后过筛，筛上料再次进行粗破，筛下料及再次进行粗破的物料进行粒度分级；
（2）粒度分级后的骨料及粉料进行细破备用；
（3）细破后的物料中加入结合剂、外加剂混拌；
（4）混拌后的物料进行密封包装。
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Cited By (3)

* Cited by examiner, † Cited by third party
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CN113620692A (zh) * 2021-09-02 2021-11-09 河南瑞泰节能新技术有限公司 一种干式镁铬质捣打料
CN114085088A (zh) * 2021-12-28 2022-02-25 郑州金世耐火材料有限公司 干式自弥合防硫化钠、硫酸钠高温溶液的防渗料
CN114315322A (zh) * 2022-01-14 2022-04-12 锦州长城耐火材料有限公司 一种高钛铁冶炼用炉衬料

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CN113620692A (zh) * 2021-09-02 2021-11-09 河南瑞泰节能新技术有限公司 一种干式镁铬质捣打料
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CN114315322A (zh) * 2022-01-14 2022-04-12 锦州长城耐火材料有限公司 一种高钛铁冶炼用炉衬料

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