CN110194672A - 一种电炉出钢口填料及其制备方法 - Google Patents

一种电炉出钢口填料及其制备方法 Download PDF

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CN110194672A
CN110194672A CN201910456778.6A CN201910456778A CN110194672A CN 110194672 A CN110194672 A CN 110194672A CN 201910456778 A CN201910456778 A CN 201910456778A CN 110194672 A CN110194672 A CN 110194672A
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parts
electric furnace
filler
tap holes
olive sand
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金钊
张义先
王振宇
王新杰
王旭东
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Haicheng Lear Meg Materials Co Ltd Sita
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/03—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite
    • C04B35/04—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite based on magnesium oxide
    • C04B35/043—Refractories from grain sized mixtures
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/14—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silica
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Abstract

一种电炉出钢口填料及其制备方法。本发明涉及一种电炉出钢口填料，其组分按重量份包括5‑3mm的橄榄砂20‑30份，1‑3mm的橄榄砂20‑30份，0‑1mm的橄榄砂20‑30份，200目的橄榄砂20‑30份，结合剂膨润土1‑10份。本发明填料的自然开浇率可达到98‑100％。本发明产品代替镁质及硅质填料，解决传统耐火材料的环保和成本问题具有现实意义。由于主要采用低成本的橄榄石为主要原料，因此对推动循环经济发展、降低耐火企业和冶金企业生产成本具有非常重要的意义。

Description

一种电炉出钢口填料及其制备方法
技术领域
本发明涉及耐火材料，特别涉及一种电炉出钢口填料及其制备方法。
背景技术
钢包口填料是用于填充炼钢车间饮包滑动水口，使钢水与水口滑板隔离。它是由一定粒度比例组成的颗粒状耐火材料，要求在钢水浇注前当滑板打开后钢水上破填料实现自动开浇。现代电炉钢厂由于采用电炉－－精烧－－连铸“三位一体”的短流程生产线，电弧炉开始普遍采用偏心炉底出钢技术(简称EBT)以实现无渣出钢。与钢包水口一样，EBT出钢口在冶炼过程中也需要用耐火材料填充，在出钢时打开出钢品托板，通过电炉倾斜钢水静压力作用下使钢水自然流出。而目前国内所用EBT填料的自然开浇率只有80％左右
现在我国钢铁冶金的连铸比已达95％以上，中包和钢包做为冶金工业的重要环节，越来越引起人们的重视，而中包和钢包水口座砖所用的填料，直到目前为止仍然采用镁铬质(主原料是镁砂和铬矿)捣打料，或刚玉质浇注料。镁铬质捣打料成本较高，刚玉质浇注料成本更高，对烘烤要求也更苛刻；少数发达国家也有使用矾土质捣打料的，进口后使用效果良好，但价格依然很高，且供应不及时。
发明内容
本发明所要解决的技术问题是提供一种电炉出钢口填料，自然开浇率高，环保，降低成本。
为实现上述目的，本发明采用以下技术方案实现：
一种电炉出钢口填料，其组分按重量份包括5-3mm(指大于3mm小于等于5mm)的橄榄砂20-30份，1-3mm(指大于1mm小于等于3mm)的橄榄砂20-30份，0-1mm(指大于0mm小于等于1mm)的橄榄砂20-30份，200目(小于0.074mm)的橄榄砂20-30份，结合剂膨润土1-10份。
一种电炉出钢口填料技术性能指标：化学成分质量百分含量MgO：40～45％；SiO2：40～45％；Al2O3：2～4％；200℃抗折强度2～4MPa；1100℃抗折强度6～8MPa；1500℃抗折强度15～20Mpa；1100℃线变化率0～0.1％；1500℃线变化率0～0.3％；开浇率≥98％。
一种电炉出钢口填料制备方法，包括原料破碎，筛分，配料，加入结合剂，混合搅拌，装袋，出成品。
与现有的技术相比，本发明的有益效果是：
本发明填料的自然开浇率可达到98-100％。本发明产品代替镁质及硅质填料，解决传统耐火材料的环保和成本问题具有现实意义。由于主要采用低成本的橄榄石为主要原料，因此对推动循环经济发展、降低耐火企业和冶金企业生产成本具有非常重要的意义。
具体实施方式
下面结合实施例对本发明进一步说明：
以下实施例对本发明进行详细描述。这些实施例仅是对本发明的最佳实施方案进行描述，并不对本发明的范围进行限制。
一种电炉出钢口填料，其组分按重量份包括5-3mm(指大于3mm小于等于5mm)的橄榄砂20-30份，1-3mm(指大于1mm小于等于3mm)的橄榄砂20-30份，0-1mm(指大于0mm小于等于1mm)的橄榄砂20-30份，200目(小于0.074mm)的橄榄砂20-30份，结合剂膨润土1-10份。
在上述配方中橄榄砂、膨润土为市售原料
以上原料指标见表1：
表1：
灼减 SiO<sub>2</sub> Fe<sub>2</sub>O<sub>3</sub> Al<sub>2</sub>O<sub>3</sub> CaO MgO
橄榄砂5-3mm 1.37 44.50 7.33 2.41 1.74 42.65
橄榄砂3-1mm 1.56 43.69 6.74 3.06 1.57 43.38
橄榄砂1-0mm 1.55 43.42 6.54 2.91 1.57 44.01
橄榄砂200目 1.24 42.17 8.32 2.09 1.56 44.62
组分组成重量份见表2；
表2：
成品技术性能指标见表3
表3：
本发明填料的自然开浇率可达到98-100％。产品性能指标均满足要求。本发明产品代替镁质及硅质填料，解决传统耐火材料的环保和成本问题具有现实意义。由于主要采用低成本的橄榄石为主要原料，因此对推动循环经济发展、降低耐火企业和冶金企业生产成本具有非常重要的意义。

Claims (3)

1.一种电炉出钢口填料，其特征在于，其组分按重量份包括5-3mm的橄榄砂20-30份，1-3mm的橄榄砂20-30份，0-1mm的橄榄砂20-30份，200目的橄榄砂20-30份，结合剂膨润土1-10份。
2.根据权利要求1所述的一种电炉出钢口填料：其特征在于，技术性能指标化学成分质量百分含量MgO：40～45％；SiO2：40～45％；Al2O3：2～4％；200℃抗折强度2～4MPa；1100℃抗折强度6～8MPa；1500℃抗折强度15～20Mpa；1100℃线变化率0～0.1％；1500℃线变化率0～0.3％；开浇率≥98％。
3.根据权利要求1所述的一种电炉出钢口填料制备方法，其特征在于，包括原料破碎，筛分，配料，加入结合剂，混合搅拌，装袋，出成品。
CN201910456778.6A 2019-05-29 2019-05-29 一种电炉出钢口填料及其制备方法 Pending CN110194672A (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114105658A (zh) * 2021-11-30 2022-03-01 河南通宇冶材集团有限公司 一种无碳引流剂及其制备方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1088191A (zh) * 1992-12-12 1994-06-22 冶金工业部洛阳耐火材料研究院 一种电炉出钢口填充料的制造方法
CN103113118A (zh) * 2011-11-17 2013-05-22 淄博天同环保工程有限公司 一种新型出钢口填料
CN106518108A (zh) * 2016-10-20 2017-03-22 常州市鼎升环保科技有限公司 一种合金钢用引流砂的制备方法
CN107382334A (zh) * 2017-06-28 2017-11-24 常州禾吉纺织品有限公司 一种钢包用镁锆质引流剂及其制备方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1088191A (zh) * 1992-12-12 1994-06-22 冶金工业部洛阳耐火材料研究院 一种电炉出钢口填充料的制造方法
CN103113118A (zh) * 2011-11-17 2013-05-22 淄博天同环保工程有限公司 一种新型出钢口填料
CN106518108A (zh) * 2016-10-20 2017-03-22 常州市鼎升环保科技有限公司 一种合金钢用引流砂的制备方法
CN107382334A (zh) * 2017-06-28 2017-11-24 常州禾吉纺织品有限公司 一种钢包用镁锆质引流剂及其制备方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114105658A (zh) * 2021-11-30 2022-03-01 河南通宇冶材集团有限公司 一种无碳引流剂及其制备方法

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