CN114455959A - 一种炉用看火门砖及其制备方法 - Google Patents
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- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims abstract description 13
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 38
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- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 12
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Abstract
本发明提供一种炉用看火门砖及其制备方法,所述的炉用看火门砖由以下重量份数的原料制成:纤维棉4‑6份、纯铝酸钙水泥0.8‑1.5份、硅溶胶4‑5份、硫酸钡砂0.1‑0.15份、金属硅微粉0.1‑0.2份、耐火粘土2‑3份和水2‑3份。本发明的看火门砖性能良好,具备良好的耐压性能,能够耐急冷急热,且使用寿命长;同时添加有硫酸钡砂具备防辐射性能,结合纤维棉以及其它组分制得的看火门砖能够有效地隔热,防止热辐射的散发。
Description
技术领域
本发明属于耐火材料技术领域,尤其是涉及一种炉用看火门砖及其制备方法。
背景技术
矿热电炉的炉门部位由于需要频繁经受高温炉渣与熔融金属流动的冲刷与化学侵蚀作用,并且还要经常处于工作状态与封闭状态时高温和低温两种不同环境的频繁转换中,需要经受急冷急热状态的考验,因此矿热电炉的炉门部位的耐火砖能够达到的技术性能成为影响炉体内衬整体寿命的关键环节。
现有矿热电炉炉门部位主要由高铝砖砌筑而成,没有转为矿热电炉设计制成的适合炉门部位苛刻工作条件的炉门砖。这种传统的由高铝砖砌筑的炉门其主要缺陷为:1、炉门位置频繁经受高温炉渣与熔融金属的冲刷,高铝材料的耐磨性能的不足,高铝炉门砖抗侵蚀抗冲刷能力较差,导致炉门部位首先报废。2、由高铝砖砌筑的炉门部位所形成的砖体较小且砖缝较多,使得砖缝部分容易首先受到侵蚀和冲刷而损坏,而且炉门部位整体稳固程度较低,容易形成炉门部位整体断裂损坏。3、炉门部位经常处在工作与封闭两种状态的不断转换过程中,需要频繁经受急热急冷状态的考验,传统高铝材料制成的砖体的热稳定性能不能满足急冷急热苛刻环境条件的要求,从而容易出现砖体断裂受损等情况。以上缺陷使得传统高铝砖砌筑的矿热电炉炉门寿命最多只能达到90天,影响矿热电炉整体使用寿命。
发明内容
本发明的第一目的是提供一种炉用看火门砖,该看火门砖能够有效隔热和耐急冷急热性能,从而防止因开关门遭受急冷急热而损坏,另外该看火门砖内加入有硫酸钡砂,可以起到防辐射的作用从而防止炉内的辐射热通过看火门进行散发。
为实现上述目的,本发明采用的技术方案是:一种炉用看火门砖,由以下重量份数的原料制成:纤维棉4-6份、纯铝酸钙水泥0.8-1.5份、硅溶胶4-5份、硫酸钡砂0.1-0.15份、金属硅微粉0.1-0.2份、耐火粘土2-3份和水2-3份。
进一步地,所述的炉用看火门砖由以下重量份数的原料制成:纤维棉5份、纯铝酸钙水泥1份、硅溶胶4.5份、硫酸钡砂0.12份、金属硅微粉0.15份、耐火粘土2份和水2.5份。
进一步地,所述的纤维棉为耐火纤维棉。
进一步地,所述纯铝酸钙水泥、金属硅微粉和硫酸钡砂的粒度为200-300目。
本发明的第二目的是提供一种炉用看火门砖的制备方法,通过本方法制得的看火门砖性能良好,具备良好的耐压性能,能够耐急冷急热,且使用寿命长;同时添加有硫酸钡砂具备防辐射性能,结合耐火纤维棉以及其它组分制得的看火门砖能够有效地隔热,防止热辐射的散发。
为实现上述目的,本发明采用的技术方案是,一种炉用看火门砖的制备方法,包括以下步骤:
(1)制备门砖混合料:将纤维棉、纯铝酸钙水泥、硅溶胶、硫酸钡砂、金属硅微粉和耐火粘土按照其重量份数进行称取,加水搅拌混合均匀,制得
(2)制备防氧化陶瓷釉混合浆料:将熔融石英粉、α-氧化铝微粉、生滑石粉、耐火粘土、钾长石和氧化锌按照其重量份数进行称取,加入到球磨机的球磨筒内,加入水,球磨24h,制成防氧化陶瓷釉混合浆料;
(3)制备半成品:将门砖混合料加入到模具中捣打成型,制得半成品;
(4)施釉:半成品成型后将防氧化陶瓷釉混合浆料使用喷枪在门砖的表面喷涂一层,厚度为1.0mm;
(5)烘干:将施釉后的半成品置于90-95℃的环境下进行烘干;
(6)烧结成型:将干燥的半成品门砖放入到窑内,在氧化气氛下煅烧,制得成品的看火门砖。
进一步地,步骤(6)烧结成型时,所述的煅烧分为三阶段,第一阶段为600-800℃下煅烧2-4h,第二阶段800-1200℃下煅烧4-6h,第三阶段1200-1300℃下煅烧1-2h。
进一步地,所述的防氧化陶瓷釉由以下重量份数的原料组成:熔融石英粉15-18份、α-氧化铝微粉4-6份、生滑石粉2-3份、耐火粘土3-4份、钾长石4-5份、氧化锌2-3份和水18-24份。
进一步地,所述的熔融石英粉、α-氧化铝微粉、生滑石粉、耐火粘土、钾长石和氧化锌的质量和与水的质量比为5:3。
本发明具有的优点和积极效果是:
本发明的看火门砖性能良好,具备良好的耐压性能,能够耐急冷急热,且使用寿命长;同时添加有硫酸钡砂具备防辐射性能,结合耐火纤维棉以及其它组分制得的看火门砖能够有效地隔热,防止热辐射的散发。
具体实施方式
下面结合具体实施方式对本发明作详细说明。
实施例1:
一种炉用看火门砖,由以下方法制得:
(1)制备门砖混合料:分别称取耐火纤维棉5份、纯铝酸钙水泥1份、硅溶胶4.5份、硫酸钡砂0.12份、金属硅微粉0.15份和耐火粘土2份,加水2.5份搅拌混合均匀,制得门砖混合料;其中纯铝酸钙水泥、金属硅微粉和硫酸钡砂的粒度为200-300目;
(2)制备防氧化陶瓷釉混合浆料:分别称取熔融石英粉16份、α-氧化铝微粉5份、生滑石粉2.5份、耐火粘土3.5份、钾长石4.5份和氧化锌2.5份,加入到球磨机的球磨筒内,加入水20.4份,球磨24h,制成防氧化陶瓷釉混合浆料;
(3)制备半成品:将门砖混合料加入到模具中捣打成型,制得半成品;
(4)施釉:半成品成型后将防氧化陶瓷釉混合浆料使用喷枪在门砖的表面喷涂一层,厚度为1.0mm;
(5)烘干:将施釉后的半成品置于90℃的环境下进行烘干,烘干24h进行干燥;
(6)烧结成型:将干燥的半成品门砖放入到窑内,在氧化气氛下煅烧,制得成品的看火门砖;其中煅烧分为三阶段,第一阶段为600-800℃下煅烧4h,第二阶段800-1200℃下煅烧4h,第三阶段1200-1300℃下煅烧1h。
实施例2:
一种炉用看火门砖,由以下方法制得:
(1)制备门砖混合料:分别称取耐火纤维棉4份、纯铝酸钙水泥0.8份、硅溶胶4份、硫酸钡砂0.1份、金属硅微粉0.1份和耐火粘土2份,加水2份搅拌混合均匀,制得门砖混合料;其中纯铝酸钙水泥、金属硅微粉和硫酸钡砂的粒度为200-300目;
(2)制备防氧化陶瓷釉混合浆料:分别称取熔融石英粉15份、α-氧化铝微粉4份、生滑石粉3份、耐火粘土4份、钾长石5份和氧化锌2份,加入到球磨机的球磨筒内,加入水18份,球磨24h,制成防氧化陶瓷釉混合浆料;
(3)制备半成品:将门砖混合料加入到模具中捣打成型,制得半成品;
(4)施釉:半成品成型后将防氧化陶瓷釉混合浆料使用喷枪在门砖的表面喷涂一层,厚度为1.0mm;
(5)烘干:将施釉后的半成品置于95℃的环境下进行烘干,烘干24h进行干燥;
(6)烧结成型:将干燥的半成品门砖放入到窑内,在氧化气氛下煅烧,制得成品的看火门砖;其中煅烧分为三阶段,第一阶段为600-800℃下煅烧2h,第二阶段800-1200℃下煅烧4h,第三阶段1200-1300℃下煅烧1h。
实施例3:
一种炉用看火门砖,由以下方法制得:
(1)制备门砖混合料:分别称取耐火纤维棉6份、纯铝酸钙水泥1.5份、硅溶胶5份、硫酸钡砂0.15份、金属硅微粉0.2份和耐火粘土3份,加水3份搅拌混合均匀,制得门砖混合料;其中纯铝酸钙水泥、金属硅微粉和硫酸钡砂的粒度为200-300目;
(2)制备防氧化陶瓷釉混合浆料:分别称取熔融石英粉18份、α-氧化铝微粉6份、生滑石粉3份、耐火粘土4份、钾长石5份和氧化锌3份,加入到球磨机的球磨筒内,加入水23.4份,球磨24h,制成防氧化陶瓷釉混合浆料;
(3)制备半成品:将门砖混合料加入到模具中捣打成型,制得半成品;
(4)施釉:半成品成型后将防氧化陶瓷釉混合浆料使用喷枪在门砖的表面喷涂一层,厚度为1.0mm;
(5)烘干:将施釉后的半成品置于92℃的环境下进行烘干,烘干24h进行干燥;
(6)烧结成型:将干燥的半成品门砖放入到窑内,在氧化气氛下煅烧,制得成品的看火门砖;其中煅烧分为三阶段,第一阶段为600-800℃下煅烧4h,第二阶段800-1200℃下煅烧6h,第三阶段1200-1300℃下煅烧2h。
实施例4:
一种炉用看火门砖,由以下方法制得:
(1)制备门砖混合料:分别称取耐火纤维棉4份、纯铝酸钙水泥1.2份、硅溶胶4.2份、硫酸钡砂0.13份、金属硅微粉0.15份和耐火粘土2.4份,加水2.6份搅拌混合均匀,制得门砖混合料;其中纯铝酸钙水泥、金属硅微粉和硫酸钡砂的粒度为200-300目;
(2)制备防氧化陶瓷釉混合浆料:分别称取熔融石英粉15份、α-氧化铝微粉4.8份、生滑石粉2.4份、耐火粘土3.6份、钾长石4.2份和氧化锌2.5份,加入到球磨机的球磨筒内,加入水19.5份,球磨24h,制成防氧化陶瓷釉混合浆料;
(3)制备半成品:将门砖混合料加入到模具中捣打成型,制得半成品;
(4)施釉:半成品成型后将防氧化陶瓷釉混合浆料使用喷枪在门砖的表面喷涂一层,厚度为1.0mm;
(5)烘干:将施釉后的半成品置于90℃的环境下进行烘干,烘干24h进行干燥;
(6)烧结成型:将干燥的半成品门砖放入到窑内,在氧化气氛下煅烧,制得成品的看火门砖;其中煅烧分为三阶段,第一阶段为600-800℃下煅烧3h,第二阶段800-1200℃下煅烧4h,第三阶段1200-1300℃下煅烧2h。
实施例5:
一种炉用看火门砖,由以下方法制得:
(1)制备门砖混合料:分别称取耐火纤维棉6份、纯铝酸钙水泥0.8份、硅溶胶4.2份、硫酸钡砂0.15份、金属硅微粉0.18份和耐火粘土2.5份,加水2.2份搅拌混合均匀,制得门砖混合料;其中纯铝酸钙水泥、金属硅微粉和硫酸钡砂的粒度为200-300目;
(2)制备防氧化陶瓷釉混合浆料:分别称取熔融石英粉17份、α-氧化铝微粉5份、生滑石粉2.5份、耐火粘土3份、钾长石5份和氧化锌2份,加入到球磨机的球磨筒内,加入水20.4份,球磨24h,制成防氧化陶瓷釉混合浆料;
(3)制备半成品:将门砖混合料加入到模具中捣打成型,制得半成品;
(4)施釉:半成品成型后将防氧化陶瓷釉混合浆料使用喷枪在门砖的表面喷涂一层,厚度为1.0mm;
(5)烘干:将施釉后的半成品置于90℃的环境下进行烘干,烘干24h进行干燥;
(6)烧结成型:将干燥的半成品门砖放入到窑内,在氧化气氛下煅烧,制得成品的看火门砖;其中煅烧分为三阶段,第一阶段为600-800℃下煅烧4h,第二阶段800-1200℃下煅烧4h,第三阶段1200-1300℃下煅烧2h。
对比例1:
一种炉用看火门砖,由以下方法制得:
(1)制备门砖混合料:分别称取耐火纤维棉5份、纯铝酸钙水泥1份、硅溶胶4.5份、金属硅微粉0.15份和耐火粘土2份,加水2.5份搅拌混合均匀,制得门砖混合料;其中纯铝酸钙水泥、金属硅微粉和硫酸钡砂的粒度为200-300目;
(2)制备防氧化陶瓷釉混合浆料:分别称取熔融石英粉16份、α-氧化铝微粉5份、生滑石粉2.5份、耐火粘土3.5份、钾长石4.5份和氧化锌2.5份,加入到球磨机的球磨筒内,加入水20.4份,球磨24h,制成防氧化陶瓷釉混合浆料;
(3)制备半成品:将门砖混合料加入到模具中捣打成型,制得半成品;
(4)施釉:半成品成型后将防氧化陶瓷釉混合浆料使用喷枪在门砖的表面喷涂一层,厚度为1.0mm;
(5)烘干:将施釉后的半成品置于90℃的环境下进行烘干,烘干24h进行干燥;
(6)烧结成型:将干燥的半成品门砖放入到窑内,在氧化气氛下煅烧,制得成品的看火门砖;其中煅烧分为三阶段,第一阶段为600-800℃下煅烧4h,第二阶段800-1200℃下煅烧4h,第三阶段1200-1300℃下煅烧1h。
实验例1:
将实施例1-5和对比例1制得的看火门砖测试其性能,测试结果如表1所示:
表1实施例1-5的看火门砖的性能检测结果
由表1的实验数据可知,本发明的配方以及制备方法制得的看火门砖的性能好,能够耐急冷急热,具有良好的耐压强度和密度,且内部的气孔率低不易将内部结构进行损蚀,整体性能好;对比例1的看火门砖在性能方面与本发明的看火门砖无太大区别。
实验例2:
将实施例1-5制备的看火门砖分别应用在窑炉上,并对窑炉进行试验,窑内温度升温至500℃,并持续进行使用,使用温度计测量看火门砖外侧窑壁的温度,以及随着使用时间的延长判断看火门砖的使用寿命,其检测结果如表2所示:
表2实施例1-5的窑壁温度以及看火门砖的使用寿命
项目 | 窑壁温度(℃) | 使用寿命(天) |
实施例1 | 35℃ | 569天 |
实施例2 | 38℃ | 524天 |
实施例3 | 39℃ | 538天 |
实施例4 | 44℃ | 492天 |
实施例5 | 42℃ | 499天 |
对比例1 | 69℃ | 486天 |
由表2的实验数据可知,本发明的看火门砖的使用寿命在450天以上,使用寿命长,且其在使用时,窑壁的温度位于40℃左右,可以有效地防止热量传递散失,从而隔绝热辐射,同时防止对人身造成伤害,便于通过配套的看火门进行观察火焰状态,在观察过程中避免对人身体造成热辐射伤害;将对比例1和实施例相比较,在不添加硫酸钡砂时制得的看火门砖其窑壁温度要高于实施例的温度接近70度,当人接近时,容易对人员造成热辐射从而伤害观察人员;从而在本发明中增加硫酸钡砂可以有效热辐射进行扩散,从而降低与其接触的炉壁的温度。
以上对本发明的具体实施例进行了详细说明,但所述内容仅为本发明的较佳实施例,不能被认为用于限定本发明的实施范围。凡依本发明申请范围所作的均等变化与改进等,均应仍归属于本发明的专利涵盖范围之内。
Claims (8)
1.一种炉用看火门砖,其特征在于,由以下重量份数的原料制成:
纤维棉4-6份、纯铝酸钙水泥0.8-1.5份、硅溶胶4-5份、硫酸钡砂0.1-0.15份、金属硅微粉0.1-0.2份、耐火粘土2-3份和水2-3份。
2.根据权利要求1所述的一种炉用看火门砖,其特征在于,由以下重量份数的原料制成:纤维棉5份、纯铝酸钙水泥1份、硅溶胶4.5份、硫酸钡砂0.12份、金属硅微粉0.15份、耐火粘土2份和水2.5份。
3.根据权利要求1所述的一种炉用看火门砖,其特征在于:所述的纤维棉为耐火纤维棉。
4.根据权利要求1所述的一种炉用看火门砖,其特征在于:所述纯铝酸钙水泥、金属硅微粉和硫酸钡砂的粒度为200-300目。
5.一种如权利要求1-4任一项所述的炉用看火门砖的制备方法,其特征在于,包括以下步骤:
(1)制备门砖混合料:将纤维棉、纯铝酸钙水泥、硅溶胶、硫酸钡砂、金属硅微粉和耐火粘土按照其重量份数进行称取,加水搅拌混合均匀,制得门砖混合料;
(2)制备防氧化陶瓷釉混合浆料:将熔融石英粉、α-氧化铝微粉、生滑石粉、耐火粘土、钾长石和氧化锌按照其重量份数进行称取,加入到球磨机的球磨筒内,加入水,球磨24h,制成防氧化陶瓷釉混合浆料;
(3)制备半成品:将门砖混合料加入到模具中捣打成型,制得半成品;
(4)施釉:半成品成型后将防氧化陶瓷釉混合浆料使用喷枪在门砖的表面喷涂一层,厚度为1.0mm;
(5)烘干:将施釉后的半成品置于90-95℃的环境下进行烘干;
(6)烧结成型:将干燥的半成品门砖放入到窑内,在氧化气氛下煅烧,制得成品的看火门砖。
6.根据权利要求5所述的一种炉用看火门砖的制备方法,其特征在于:步骤(6)烧结成型时,所述的煅烧分为三阶段,第一阶段为600-800℃下煅烧2-4h,第二阶段800-1200℃下煅烧4-6h,第三阶段1200-1300℃下煅烧1-2h。
7.根据权利要求5所述的一种炉用看火门砖的制备方法,其特征在于:所述的防氧化陶瓷釉由以下重量份数的原料组成:熔融石英粉15-18份、α-氧化铝微粉4-6份、生滑石粉2-3份、耐火粘土3-4份、钾长石4-5份、氧化锌2-3份和水18-24份。
8.根据权利要求7所述的一种炉用看火门砖的制备方法,其特征在于:所述的熔融石英粉、α-氧化铝微粉、生滑石粉、耐火粘土、钾长石和氧化锌的质量和与水的质量比为5:3。
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CN105669118A (zh) * | 2015-12-31 | 2016-06-15 | 浙江建安检测研究院有限公司 | 一种辐射防护涂料 |
CN106116398A (zh) * | 2016-06-20 | 2016-11-16 | 孙晋玉 | 一种防辐射健康石膏板 |
JP2020079182A (ja) * | 2018-11-13 | 2020-05-28 | ロザイ工業株式会社 | 耐火断熱れんが及びその製造方法 |
CN112409828A (zh) * | 2020-11-24 | 2021-02-26 | 北京中科原创节能环保科技有限公司 | 一种用于高温炉窑远红外节能型辐射涂料 |
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