CN104926335B - 一种钢包浇注料 - Google Patents

一种钢包浇注料 Download PDF

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CN104926335B
CN104926335B CN201510380617.5A CN201510380617A CN104926335B CN 104926335 B CN104926335 B CN 104926335B CN 201510380617 A CN201510380617 A CN 201510380617A CN 104926335 B CN104926335 B CN 104926335B
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ladle
aluminate
powder
sintered microporous
microporous aluminate
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CN104926335A (zh
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求才军
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Xuzhou national long power accessories Casting Co., Ltd.
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Ningxia Kangcheng Electrical And Mechanical Products Design Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay

Abstract

本发明涉及一种钢包浇注料，具体的说是一种钢包内衬或工作层用浇注料。包括如下重量份数的组分，本发明所要解决的技术问题是提供一种钢包浇注料，使用部位为钢包与钢水接触的直接内衬，其中各组分重量百分比为：烧结微孔铝尖晶石12—8mm为8～20％、烧结微孔铝尖晶石8—5mm为l1～15％、烧结微孔铝尖晶石5—3mm为12～15％，烧结微孔铝尖晶石3一lmm为10～15％、烧结微孔铝尖晶石≤1mm为30～35％，改性镁钙砂≤1mm0～5%，二碳化三铬粉1%，复合凝胶粉3～5%，水合氧化铝微粉1%，珍珠陶土粉1%，锗酸铋粉0.5%，改性纯铝酸钙水泥3～5％，外加C7H10N2O2S0.1%，C21H14Na2O6S20.1%，2‑吗啉乙磺酸0.05%。本发明可以降低钢包内衬材料与熔渣的反应程度，提高其抗渣性能钢包产品的高温性能、抗渣侵蚀性能，大幅增加了钢包的抗热震性能，有效提高了整体浇注钢包的使用寿命，比常规同类型的钢包寿命提高30%以上。

Description

一种钢包浇注料
技术领域
本发明涉及一种钢包耐火材料，具体的说是一种钢包内衬浇注料。
背景技术
钢包中和钢水直接接触的耐火材料称为钢包工作层。现有技术中钢包工作层一般采用尖晶石浇注料，但目前钢包内衬的各项性能一般，因此，直接影响了钢包的使用寿命，如何提高钢包的使用寿命，改善钢包工作层的性能最为关键，因此钢包内衬浇注料的性能改进成为延长钢包使用寿命的关键。
发明内容
为了解决上述技术问题，本发明提供一种钢包浇注料，可以降低钢包内衬材料与熔渣的反应程度，提高其抗渣性能钢包产品的高温性能、抗渣侵蚀性能，大幅增加了钢包的抗热震性能，总体上提高了钢包的综合性能，最终钢包的使用寿命大幅增加。
本发明所要解决的技术问题是提供一种钢包浇注料，使用部位为钢包与钢水接触的直接内衬，其中各组分重量百分比为：烧结微孔铝尖晶石12—8mm为8～20％、烧结微孔铝尖晶石8—5mm为l1～15％、烧结微孔铝尖晶石5—3mm为12～15％，烧结微孔铝尖晶石3一lmm为10～15％、烧结微孔铝尖晶石≤1mm为30～35％，改性镁钙砂≤1mm0～5%，二碳化三铬粉1%，复合凝胶粉3～5%，水合氧化铝微粉1%，珍珠陶土粉1%，锗酸铋粉0.5%，改性纯铝酸钙水泥 3～5％，外加C7H10N2O2S0.1%，C21H14Na2O6S20.1%，2-吗啉乙磺酸0.05%。
本发明进一步的技术特征是：所述的复合凝胶粉为锆凝胶粉和铝凝胶粉的复合粉，其重量比为1:2。
所述改性镁钙砂是指镁钙砂用H2C2O4进行浸渍和碳酸化处理，使镁钙砂表面形成抗水化的包覆膜。
所述烧结微孔铝尖晶石为氧化铝含量≥78％，闭口微孔的孔径≤5微米，闭口微孔占总气孔的80%以上。
所述珍珠陶土的铝含量≥30%。
所述改性纯铝酸钙水泥为水泥生产过程中加入了5%的铝尖晶石，3%碳酸锆再经高温烧结制造出来的特性水泥，改性铝酸钙水泥的铝含量≥75%。
本发明的有益效果是：
本发明可以降低钢包内衬材料与熔渣的反应程度，提高其抗渣性能钢包产品的高温性能、抗渣侵蚀性能，大幅增加了钢包的抗热震性能，有效提高了整体浇注钢包的使用寿命，比常规同类型的钢包寿命提高30%以上。
具体实施方式
实施例1：
一种钢包浇注料，使用部位为钢包与钢水接触的直接内衬，其中各组分重量百分比为：各组分重量百分比为：烧结微孔铝尖晶石12—8mm为15％、烧结微孔铝尖晶石8—5mm为14％、烧结微孔铝尖晶石5—3mm为15％，烧结微孔铝尖晶石3一lmm为13％、烧结微孔铝尖晶石≤1mm为30％，二碳化三铬粉1%，复合凝胶粉5%，水合氧化铝微粉1%，珍珠陶土粉1%，锗酸铋粉0.5%，改性纯铝酸钙水泥 4.5％，外加C7H10N2O2S0.1%，C21H14Na2O6S20.1%，2-吗啉乙磺酸0.05%。将上述 配料混合均匀即得钢包浇注料。
以实施例1的钢包浇注料配方进行实验测试：外加占上述配方比例重量3~6wt%的水，测试性能指标如下：体积密度为2.9/cm3； 1600℃×3h烧后抗折强度为18.8MPa；1600℃×3h烧后耐压强度为78MPa；1100℃水冷10次后抗折强度保持率为41%；1500℃回转坩埚法抗渣实验侵蚀指数14%；渗透指数24%。实验使用的钢渣的碱度CaO/SiO2=2.03。比常规同类型的钢包寿命提高32%以上。
实施例2：
一种钢包浇注料，其中各组分重量百分比为：各组分重量百分比为：烧结微孔铝尖晶石12—8mm为14％、烧结微孔铝尖晶石8—5mm为15％、烧结微孔铝尖晶石5—3mm为15％，烧结微孔铝尖晶石3一lmm为12％、烧结微孔铝尖晶石≤1mm为30％，改性镁钙砂≤1mm为2%，二碳化三铬粉1%，复合凝胶粉5%，水合氧化铝微粉1%，珍珠陶土粉1%，锗酸铋粉0.5%，改性纯铝酸钙水泥 3.5％，外加C7H10N2O2S0.1%，C21H14Na2O6S20.1%，2-吗啉乙磺酸0.05%。将上述 配料混合均匀即得钢包浇注料。
以实施例2的钢包浇注料配方进行实验测试：外加占上述配方比例重量3~6wt%的水，测试性能指标如下：体积密度为2.9/cm3； 1600℃×3h烧后抗折强度为17MPa；1600℃×3h烧后耐压强度为71MPa；1100℃水冷10次后抗折强度保持率为54%；1500℃回转坩埚法抗渣实验侵蚀指数11%；渗透指数19%。实验使用的钢渣的碱度CaO/SiO2=2.03。比常规同类型的钢包寿命提高35%以上。

Claims (2)

1.一种钢包浇注料，其特征在于各组分重量百分比为：烧结微孔铝尖晶石12—8mm为14％、烧结微孔铝尖晶石8—5mm为15％、烧结微孔铝尖晶石5—3mm为15％，烧结微孔铝尖晶石3一lmm为12％、烧结微孔铝尖晶石≤1mm为30％，改性镁钙砂≤1mm为2%，二碳化三铬粉1%，复合凝胶粉5%，水合氧化铝微粉1%，珍珠陶土粉1%，锗酸铋粉0.5%，改性纯铝酸钙水泥 3.5％，外加C7H10N2O2S0.1%，C21H14Na2O6S20.1%，2-吗啉乙磺酸0.05%；所述的复合凝胶粉为锆凝胶粉和铝凝胶粉的复合粉，其重量比为1:2；所述烧结微孔铝尖晶石为氧化铝含量≥78％，闭口微孔的孔径≤5微米，闭口微孔占总气孔的80%以上；所述改性镁钙砂是指镁钙砂用H2C2O4进行浸渍和碳酸化处理，使镁钙砂表面形成抗水化的包覆膜；所述改性纯铝酸钙水泥为水泥生产过程中加入了5%的铝尖晶石，3%碳酸锆再经高温烧结制造出来的特性水泥，改性铝酸钙水泥的铝含量≥75%。
2.如权利要求1所述的钢包浇注料，其特征在于所述珍珠陶土的铝含量≥30%。
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