CN109553403A - 一种高热震的新型硅砖及其生产工艺 - Google Patents

一种高热震的新型硅砖及其生产工艺 Download PDF

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CN109553403A
CN109553403A CN201811501365.7A CN201811501365A CN109553403A CN 109553403 A CN109553403 A CN 109553403A CN 201811501365 A CN201811501365 A CN 201811501365A CN 109553403 A CN109553403 A CN 109553403A
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parts
powder
silica
silica brick
thermal shock
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戴永善
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Xinyi North American High Tech Refractories Co Ltd
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Abstract

本发明提供一种高热震的新型硅砖及其生产工艺，所述硅砖包括如下重量份的成分：硅石颗粒：20~30份，硅微粉：10~20份，纳米碳酸钙：10~15份，纳米氧化铁：5~10份，纳米二氧化硅：5~10份，白云母粉：5~10份，方解石粉：5~10份，膨润土：10~15份，氢氧化钙粉：5~10份，粘土：5~10份，转化剂：1~5份，增韧剂：1~5份，分散剂：1~5份，矿化剂：1~5份。所述硅砖成分设计合理，生产工艺对环境友好，生产所得硅砖强度高，抗热震能力强，耐高温，耐磨、耐腐蚀能力强，使用寿命长，生产成本低，经济效益好。

Description

一种高热震的新型硅砖及其生产工艺
技术领域
本发明属于硅砖生产技术领域，具体地，涉及一种高热震的新型硅砖及其生产工艺。
背景技术
硅砖属酸性耐火材料，具有良好的抗酸性渣侵蚀的能力，荷重软化温度高达1640～1670℃，在高温下长期使用体积比较稳定。
硅砖的矿相组成主要为鳞石英和方石英，还有少量石英和玻璃质。鳞石英、方石英和残存石英在低温下因晶型变化，体积有较大变化，因此硅砖在低温下的热稳定性很差。使用过程中，在800℃以下要缓慢加热和冷却，以免产生裂纹。所以不宜在 800℃以下有温度急变的窑炉上使用。
硅砖的性质和工艺过程同SiO2的晶型转化有密切关系，因此，真比重是硅砖的一个重要质量指标。一般要求在2.38以下，优质硅砖应在2.35以下。真比重小，反映砖中鳞石英和方石英数量多，残余石英量小，因而残余线膨胀小，使用中强度下降也少。
对于硅砖，公开号为CN104119081B的中国专利公开了一种焦炉用高导热硅砖及其制备方法。一种焦炉用高导热硅砖，其成分按重量百分比为：天然硅石颗粒68.0%~82.0%，天然硅石细粉13.0%~26.0%，添加剂中含分散剂0.5%~2.0%，含硅质非氧化物1.5%~5.0%；矿化剂1.0%~3.0%；结合剂为外加以上物料总重量的+1.5%~3.0%。所述添加剂包括分散剂羧甲基纤维素(CMC)，羧甲基纤维素粒度<0.088mm；硅质非氧化物Si粒度<0.043mm，其中Si含量>96wt%。硅砖具有高导热性和保持硅砖其它综合优良性能，能同时满足焦炉长寿、节能和高效生产的需要。然而，该专利所提供的硅砖，生产过程对环境不友好，生产成本高。
发明内容
为解决上述存在的问题，本发明的目的在于提供一种高热震的新型硅砖及其生产工艺，所述硅砖成分设计合理，生产工艺对环境友好，生产所得硅砖强度高，抗热震能力强，耐高温，耐磨、耐腐蚀能力强，使用寿命长，生产成本低，经济效益好。
为达到上述目的，本发明的技术方案是：
一种高热震的新型硅砖，所述硅砖包括如下重量份的成分：硅石颗粒：20~30份，硅微粉：10~20份，纳米碳酸钙：10~15份，纳米氧化铁：5~10份，纳米二氧化硅：5~10份，白云母粉：5~10份，方解石粉：5~10份，膨润土：10~15份，氢氧化钙粉：5~10份，粘土：5~10份，转化剂：1~5份，增韧剂：1~5份，分散剂：1~5份，矿化剂：1~5份。
进一步地，所述硅砖包括如下重量份的成分：硅石颗粒：20~30份，硅微粉：15~20份，纳米碳酸钙：10~13份，纳米氧化铁：6~10份，纳米二氧化硅：5~7份，白云母粉：5~8份，方解石粉：7~10份，膨润土：10~13份，氢氧化钙粉：5~7份，粘土：7~10份，转化剂：3~5份，增韧剂：2~5份，分散剂：1~3份，矿化剂：1~4份。
进一步地，所述硅砖包括如下重量份的成分：硅石颗粒：25份，硅微粉：15份，纳米碳酸钙：13份，纳米氧化铁：7份，纳米二氧化硅：6份，白云母粉：8份，方解石粉：7份，膨润土：12份，氢氧化钙粉：6份，粘土：8份，转化剂：4份，增韧剂：3份，分散剂：2份，矿化剂：3份。
进一步地，所述转化剂为氧化钛、氧化镁或氧化铝。
进一步地，所述增韧剂为氧化锆。
进一步地，所述分散剂为羧甲基纤维素。
进一步地，所述矿化剂为铝酸钙水泥。
同时，本发明还提供一种高热震的新型硅砖的生产工艺，所述生产工艺包括如下步骤：按照配比将所述硅石颗粒、硅微粉、纳米碳酸钙、纳米氧化铁、纳米二氧化硅、白云母粉、方解石粉、膨润土、氢氧化钙粉、粘土、转化剂、增韧剂、分散剂以及矿化剂加入粉剂混碾机，连续混碾50~60分钟，混合均匀后，用模压振动成型机制成砖坯，在550~650℃下烘烤20~25小时，在真空压力为0.05~0.08mpa，保压4~6小时，1300~1400℃焙烧，保温时间60~70小时，即可获得所述高热震的新型硅砖。
本发明的有益效果在于：
所述硅砖成分设计合理，生产工艺对环境友好，生产所得硅砖强度高，抗热震能力强，耐高温，耐磨、耐腐蚀能力强，使用寿命长，生产成本低，经济效益好。
具体实施方式
本发明所述的一种高热震的新型硅砖，所述硅砖包括如下重量份的成分：硅石颗粒：20~30份，硅微粉：10~20份，纳米碳酸钙：10~15份，纳米氧化铁：5~10份，纳米二氧化硅：5~10份，白云母粉：5~10份，方解石粉：5~10份，膨润土：10~15份，氢氧化钙粉：5~10份，粘土：5~10份，转化剂：1~5份，增韧剂：1~5份，分散剂：1~5份，矿化剂：1~5份。
进一步地，所述硅砖包括如下重量份的成分：硅石颗粒：20~30份，硅微粉：15~20份，纳米碳酸钙：10~13份，纳米氧化铁：6~10份，纳米二氧化硅：5~7份，白云母粉：5~8份，方解石粉：7~10份，膨润土：10~13份，氢氧化钙粉：5~7份，粘土：7~10份，转化剂：3~5份，增韧剂：2~5份，分散剂：1~3份，矿化剂：1~4份。
进一步地，所述硅砖包括如下重量份的成分：硅石颗粒：25份，硅微粉：15份，纳米碳酸钙：13份，纳米氧化铁：7份，纳米二氧化硅：6份，白云母粉：8份，方解石粉：7份，膨润土：12份，氢氧化钙粉：6份，粘土：8份，转化剂：4份，增韧剂：3份，分散剂：2份，矿化剂：3份。
进一步地，所述转化剂为氧化钛、氧化镁或氧化铝。
进一步地，所述增韧剂为氧化锆。
进一步地，所述分散剂为羧甲基纤维素。
进一步地，所述矿化剂为铝酸钙水泥。
同时，本发明还提供一种高热震的新型硅砖的生产工艺，所述生产工艺包括如下步骤：按照配比将所述硅石颗粒、硅微粉、纳米碳酸钙、纳米氧化铁、纳米二氧化硅、白云母粉、方解石粉、膨润土、氢氧化钙粉、粘土、转化剂、增韧剂、分散剂以及矿化剂加入粉剂混碾机，连续混碾50~60分钟，混合均匀后，用模压振动成型机制成砖坯，在550~650℃下烘烤20~25小时，在真空压力为0.05~0.08mpa，保压4~6小时，1300~1400℃焙烧，保温时间60~70小时，即可获得所述高热震的新型硅砖。
需要说明的是，以上实施例仅用以说明本发明的技术方案而非限制。尽管参照较佳实施例对本发明进行了详细说明，本领域的普通技术人员应当理解，可以对发明的技术方案进行修改或者等同替换，而不脱离本发明技术方案的范围，其均应涵盖在本发明的权利要求范围中。

Claims (8)

1.一种高热震的新型硅砖，其特征在于，所述硅砖包括如下重量份的成分：硅石颗粒：20~30份，硅微粉：10~20份，纳米碳酸钙：10~15份，纳米氧化铁：5~10份，纳米二氧化硅：5~10份，白云母粉：5~10份，方解石粉：5~10份，膨润土：10~15份，氢氧化钙粉：5~10份，粘土：5~10份，转化剂：1~5份，增韧剂：1~5份，分散剂：1~5份，矿化剂：1~5份。
2.根据权利要求1所述的高热震的新型硅砖，其特征在于，所述硅砖包括如下重量份的成分：硅石颗粒：20~30份，硅微粉：15~20份，纳米碳酸钙：10~13份，纳米氧化铁：6~10份，纳米二氧化硅：5~7份，白云母粉：5~8份，方解石粉：7~10份，膨润土：10~13份，氢氧化钙粉：5~7份，粘土：7~10份，转化剂：3~5份，增韧剂：2~5份，分散剂：1~3份，矿化剂：1~4份。
3.根据权利要求1所述的高热震的新型硅砖，其特征在于，所述硅砖包括如下重量份的成分：硅石颗粒：25份，硅微粉：15份，纳米碳酸钙：13份，纳米氧化铁：7份，纳米二氧化硅：6份，白云母粉：8份，方解石粉：7份，膨润土：12份，氢氧化钙粉：6份，粘土：8份，转化剂：4份，增韧剂：3份，分散剂：2份，矿化剂：3份。
4.根据权利要求1所述的高热震的新型硅砖，其特征在于，所述转化剂为氧化钛、氧化镁或氧化铝。
5.根据权利要求1所述的高热震的新型硅砖，其特征在于，所述增韧剂为氧化锆。
6.根据权利要求1所述的高热震的新型硅砖，其特征在于，所述分散剂为羧甲基纤维素。
7.根据权利要求1所述的高热震的新型硅砖，其特征在于，所述矿化剂为铝酸钙水泥。
8.一种如权利要求1~7中任一项所述的高热震的新型硅砖的生产工艺，其特征在于，所述生产工艺包括如下步骤：按照配比将所述硅石颗粒、硅微粉、纳米碳酸钙、纳米氧化铁、纳米二氧化硅、白云母粉、方解石粉、膨润土、氢氧化钙粉、粘土、转化剂、增韧剂、分散剂以及矿化剂加入粉剂混碾机，连续混碾50~60分钟，混合均匀后，用模压振动成型机制成砖坯，在550~650℃下烘烤20~25小时，在真空压力为0.05~0.08mpa，保压4~6小时，1300~1400℃焙烧，保温时间60~70小时，即可获得所述高热震的新型硅砖。
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