CN108409341A - 一种耐火砖及其制备方法 - Google Patents
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Abstract
本发明涉及一种耐火砖及其制备方法,各组分按重量份数计为:煅烧高岭土30‑40份、氧化铝粉10‑20份、粘土5‑8份、金属硅粉1‑2份以及氧化钾5‑8份,按重量份数称取后各组分原料后依次加入连续混炼机中进行混炼,最后经过高压成型后高温烧结制成。本发明制备方法简单,步骤易于操作,通过组分配比的调整,增强了耐火砖的强度,提高了耐火砖的抗热震性能。
Description
技术领域
本发明涉及一种耐火砖及其制备方法,属于耐火材料制备技术领域。
背景技术
耐火材料主要用于一些高温工业,如冶金、玻璃、水泥、电力等行业,主要是制成耐火砖用于炉子的内衬中,不定型的耐火砖是将各种原料按一定的比例混合搅拌后经过压制成型后烘烤固化制成的,但有些耐火砖抗热震性能不佳,在使用过程中随着温度的升高容易出现破损,影响正常使用或使用效果不好。
发明内容
本发明的目的是克服现有技术中存在的不足,提供一种耐火砖及其制备方法。
本发明采用如下技术方案:一种耐火砖,各组分按重量份数计为:煅烧高岭土30-40份、氧化铝粉10-20份、粘土5-8份、金属硅粉1-2份以及氧化钾 5-8份。
进一步的,所述煅烧高岭土的粒径为10-20μm。
耐火砖的制备方法,包括如下步骤:
(1)称重:按重量份数分别称取煅烧高岭土30-40份、氧化铝粉10-20份、粘土5-8份、金属硅粉1-2份以及氧化钾 5-8份;
(2)混炼:将煅烧高岭土和氧化铝粉放入混炼机中干混10-20min,然后加入粘土5-8份继续混合5-10min,最后加入金属硅粉1-2份和氧化钾 5-8份充分混合20-40min;
(3)压制成型:将泥料加入至模具中高压成型,然后在1400-1600℃的高温隧道窑内进行烧成,保温12-20h,冷却得到耐火砖。
进一步的,步骤(2)中采用连续混炼机的转速为900~1000 rad/min,混炼时间为20~60min。
本发明制备方法简单,步骤易于操作,通过组分配比的调整,增强了耐火砖的强度,提高了耐火砖的抗热震性能。
具体实施方式
下面结合具体实施例对本发明作进一步说明。
实施例一:
一种耐火材料的制备方法:包括如下步骤:
(1)称重:按重量份数分别称取煅烧高岭土30份、氧化铝粉20份、粘土5份、金属硅粉2份以及氧化钾 5份;
(2)混炼:将煅烧高岭土30份和氧化铝粉20份放入混炼机中干混10min,然后加入粘土5份继续混合5min,最后加入金属硅粉2份和氧化钾5份充分混合20min,混炼采用连续混炼机的转速为1000 rad/min,混炼时间为20min;
(3)压制成型:将泥料加入至模具中高压成型,然后在1600℃的高温隧道窑内进行烧成,保温12h,冷却得到耐火砖。
对制备得到的耐火砖进行热震稳定性能的测定,结果为:28(1100℃,次)。
实施例二:
一种耐火材料的制备方法:包括如下步骤:
(1)称重:按重量份数分别称取煅烧高岭土40份、氧化铝粉10份、粘土8份、金属硅粉1份以及氧化钾 8份;
(2)混炼:将煅烧高岭土和氧化铝粉放入混炼机中干混20min,然后加入粘土8份继续混合10min,最后加入金属硅粉1份和氧化钾 8份充分混合40min,混炼采用连续混炼机的转速为900rad/min,混炼时间为60min;
(3)压制成型:将泥料加入至模具中高压成型,然后在1400℃的高温隧道窑内进行烧成,保温20h,冷却得到耐火砖。
对制备得到的耐火砖进行热震稳定性能的测定,结果为:26(1100℃,次)。
实施例三:
一种耐火材料的制备方法:包括如下步骤:
(1)称重:按重量份数分别称取煅烧高岭土35份、氧化铝粉15份、粘土6份、金属硅粉1份以及氧化钾 7份;
(2)混炼:将煅烧高岭土35份和氧化铝粉15份放入混炼机中干混15min,然后加入粘土6份继续混合8min,最后加入金属硅粉1份和氧化钾7份充分混合30min,混炼采用连续混炼机的转速为950 rad/min,混炼时间为50min;
(3)压制成型:将泥料加入至模具中高压成型,然后在1500℃的高温隧道窑内进行烧成,保温15h,冷却得到耐火砖。
对制备得到的耐火砖进行热震稳定性能的测定,结果为:27(1100℃,次)。
Claims (4)
1.一种耐火砖,其特征是:各组分按重量份数计为:煅烧高岭土30-40份、氧化铝粉10-20份、粘土5-8份、金属硅粉1-2份以及氧化钾 5-8份。
2.如权利要求1所述的耐火砖,其特征是:所述煅烧高岭土的粒径为10-20μm。
3.权利要求1所述的耐火砖的制备方法,其特征是:包括如下步骤:
(1)称重:按重量份数分别称取煅烧高岭土30-40份、氧化铝粉10-20份、粘土5-8份、金属硅粉1-2份以及氧化钾 5-8份;
(2)混炼:将煅烧高岭土和氧化铝粉放入混炼机中干混10-20min,然后加入粘土5-8份继续混合5-10min,最后加入金属硅粉1-2份和氧化钾 5-8份充分混合20-40min;
(3)压制成型:将泥料加入至模具中高压成型,然后在1400-1600℃的高温隧道窑内进行烧成,保温12-20h,冷却得到耐火砖。
4. 如权利要求1所述的耐火砖的制备方法,其特征是:步骤(2)中采用连续混炼机的转速为900~1000 rad/min,混炼时间为20~60min。
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CN109081641A (zh) * | 2018-09-18 | 2018-12-25 | 明光瑞尔非金属材料有限公司 | 一种无毒防火保温耐火砖及其制备方法 |
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CN104150916A (zh) * | 2014-04-22 | 2014-11-19 | 河南鑫诚耐火材料股份有限公司 | 一种焙烧炉炉底用隔热砖及其制备方法 |
CN104774021A (zh) * | 2015-04-10 | 2015-07-15 | 辉煌水暖集团有限公司 | 一种用于窑炉耐火砖的粘接泥及其制备工艺 |
CN107663095A (zh) * | 2016-07-29 | 2018-02-06 | 济源市涟源炉业有限公司 | 一种粘土质隔热耐火砖ng130‑1.0及其制备方法 |
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CN104150916A (zh) * | 2014-04-22 | 2014-11-19 | 河南鑫诚耐火材料股份有限公司 | 一种焙烧炉炉底用隔热砖及其制备方法 |
CN104774021A (zh) * | 2015-04-10 | 2015-07-15 | 辉煌水暖集团有限公司 | 一种用于窑炉耐火砖的粘接泥及其制备工艺 |
CN107663095A (zh) * | 2016-07-29 | 2018-02-06 | 济源市涟源炉业有限公司 | 一种粘土质隔热耐火砖ng130‑1.0及其制备方法 |
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CN109081641A (zh) * | 2018-09-18 | 2018-12-25 | 明光瑞尔非金属材料有限公司 | 一种无毒防火保温耐火砖及其制备方法 |
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