CN107324782A - 一种低线变化率横墙砖及其制备方法 - Google Patents

一种低线变化率横墙砖及其制备方法 Download PDF

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CN107324782A
CN107324782A CN201710786676.1A CN201710786676A CN107324782A CN 107324782 A CN107324782 A CN 107324782A CN 201710786676 A CN201710786676 A CN 201710786676A CN 107324782 A CN107324782 A CN 107324782A
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彭亚琴
孙小军
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HENAN XINCHENG REFRACTORY MATERIAL CO Ltd
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Abstract

本发明公开了一种低线变化率横墙砖，包括以下的原料组分：煅烧矾土熟料、硅线石、广西粘土粉、蓝晶石粉。还公布该横墙砖的制备方法，包括原材料预处理、原材料称量、原材料混合、混炼泥料制备、压制成型、煅烧。本发明所制备的低线变化率横墙砖具有永久线变化率小、热震稳定性高、荷重软化温度高、高温蠕变率低特性，能够很好满足我国节能、环保、高效、高温窑炉的技术指标要求。

Description

一种低线变化率横墙砖及其制备方法
技术领域
本发明属于电解铝用炭素阳极焙烧炉领域，特别是涉及一种低线变化率横墙砖。
背景技术
炭素阳极焙烧炉主要是焙烧炭块使之成为电解槽所用阳极炭块的设备，焙烧炉的作用是将经高压成型后的各种炭块在隔绝空气的情况下，按规定的焙烧温度进行间接加热，以提高炭素制品的机械强度、导电性和耐高温性能。窑体结构中，铝用阳极炭块生产领域的焙烧炉料箱是由火道墙和横墙组成的。火道横墙，既是把火道分隔为炉室的墙，又是连通各自火道的墙。
目前，炭素阳极焙烧炉横墙砖大多使用粘土砖，炭素焙烧炉横墙是阳极焙烧炉比较重要部位，材料使用不当会造成比较严重的后果，造成墙体开裂、变形，严重影响炭素焙烧炉的使用寿命。
发明内容
本发明的目的在于克服现有横墙砖高温体积稳定性差、使用周期短、易损坏，维修更换造成人力、物力浪费的缺陷，提供一种低线变化率横墙砖及其制备方法。
为达到上述目的，本发明是按照以下技术方案实施的：
一种低线变化率横墙砖，包括以下的原料组分：煅烧矾土熟料、硅线石、广西粘土粉、蓝晶石粉。
优选的，所述原料组分规格及配比如下：
粒径为3～5mm的煅烧矾土熟料，重量百分比为5～10%；粒径为1～3mm的煅烧矾土熟料，重量百分比为25～30%；粒径为0～1mm的硅线石，重量百分比为15～25%；粒径≤0.074mm的广西粘土粉，重量百分比为10～15%；粒径≤0.088mm的蓝晶石粉，重量百分比为10～20%；粒径≤0.088mm的煅烧矾土熟料粉，重量百分比为15～20%。
本发明还提供了一种低线变化率横墙砖的制备方法，该方法包括以下步骤：
步骤一，原材料预处理，将煅烧矾土熟料粉碎后筛分出粒径1～3mm和3～5mm的煅烧矾土熟料；将硅线石粉碎后筛分出粒径为0～1mm的硅线石料；将广西粘土研磨成粒径≤0.074mm的细粉，蓝晶石研磨成粒径≤0.088mm的细粉，煅烧矾土熟料研磨成粒径≤0.088mm的细粉；
步骤二，原材料称量，按照配比称取步骤一处理好的原材料：粒径为3～5mm的煅烧矾土熟料，重量百分比为5～10%；粒径为1～3mm的煅烧矾土熟料，重量百分比为25～30%；粒径为0～1mm的硅线石，重量百分比为15～25%；粒径≤0.074mm的广西粘土粉，重量百分比为10～15%；粒径≤0.088mm的蓝晶石粉，重量百分比为10～20%；粒径≤0.088mm的煅烧矾土熟料粉，重量百分比为15～20%；
步骤三，原材料混合，将步骤二中称量好的各组分原材料混合搅拌均匀，得到混合料；
步骤四，混炼泥料制备，按照混合料:纸浆废液为100:1的重量比加入纸浆废液，混炼10分钟，得到混炼泥料；
步骤五，采用气动压力机，将混炼泥料压制成砖坯；
步骤六，将砖坯装入隧道窑中，在1400～1500℃温度中进行煅烧，制成低线变化率横墙砖成品。
优选的，所述气动压力机压力为315t。
优选的，所述混炼泥料压制成的砖坯密度＞2.48g/cm3。
与现有技术相比，本发明的有益效果为：
本发明所制备的低线变化率横墙砖具有永久线变化率小、热震稳定性高、荷重软化温度高、高温蠕变率低特性，能够很好满足我国节能、环保、高效、高温窑炉的技术指标要求。
具体实施方式
下面结合具体实施例对本发明作进一步描述，在此发明的示意性实施例以及说明用来解释本发明，但并不作为对本发明的限定。
实施例1：
步骤一，原材料预处理，将煅烧矾土熟料粉碎后筛分出粒径1～3mm和3～5mm的煅烧矾土熟料；将硅线石粉碎后筛分出粒径为0～1mm的硅线石料；将广西粘土研磨成粒径≤0.074mm的细粉，蓝晶石研磨成粒径≤0.088mm的细粉，煅烧矾土熟料研磨成粒径≤0.088mm的细粉；
步骤二，原材料称量，按照配比称取步骤一处理好的原材料：粒径为3～5mm的煅烧矾土熟料，重量百分比为6%；粒径为1～3mm的煅烧矾土熟料，重量百分比为29%；粒径为0～1mm的硅线石，重量百分比为20%；粒径≤0.074mm的广西粘土粉，重量百分比为12%；粒径≤0.088mm的蓝晶石粉，重量百分比为15%；粒径≤0.088mm的煅烧矾土熟料粉，重量百分比为18%；
步骤三，原材料混合，将步骤二中称量好的各组分原材料混合搅拌均匀，得到混合料；
步骤四，混炼泥料制备，按照混合料:纸浆废液为100:1的重量比加入纸浆废液，混炼10分钟，得到混炼泥料；
步骤五，采用315T气动压力机，将混炼泥料压制成密度＞2.48g/cm3的砖坯；
步骤六，将砖坯装入隧道窑中，在1400℃温度中进行煅烧，制成低线变化率横墙砖成品。
实施例2：
步骤一，原材料预处理，将煅烧矾土熟料粉碎后筛分出粒径1～3mm和3～5mm的煅烧矾土熟料；将硅线石粉碎后筛分出粒径为0～1mm的硅线石料；将广西粘土研磨成粒径≤0.074mm的细粉，蓝晶石研磨成粒径≤0.088mm的细粉，煅烧矾土熟料研磨成粒径≤0.088mm的细粉；
步骤二，原材料称量，按照配比称取步骤一处理好的原材料：粒径为3～5mm的煅烧矾土熟料，重量百分比为5%；粒径为1～3mm的煅烧矾土熟料，重量百分比为30%；粒径为0～1mm的硅线石，重量百分比为15%；粒径≤0.074mm的广西粘土粉，重量百分比为15%；粒径≤0.088mm的蓝晶石粉，重量百分比为20%；粒径≤0.088mm的煅烧矾土熟料粉，重量百分比为15%；
步骤三，原材料混合，将步骤二中称量好的各组分原材料混合搅拌均匀，得到混合料；
步骤四，混炼泥料制备，按照混合料:纸浆废液为100:1的重量比加入纸浆废液，混炼10分钟，得到混炼泥料；
步骤五，采用315T气动压力机，将混炼泥料压制成密度＞2.48g/cm3的砖坯；
步骤六，将砖坯装入隧道窑中，在1460℃温度中进行煅烧，制成低线变化率横墙砖成品。
实施例3：
步骤一，原材料预处理，将煅烧矾土熟料粉碎后筛分出粒径1～3mm和3～5mm的煅烧矾土熟料；将硅线石粉碎后筛分出粒径为0～1mm的硅线石料；将广西粘土研磨成粒径≤0.074mm的细粉，蓝晶石研磨成粒径≤0.088mm的细粉，煅烧矾土熟料研磨成粒径≤0.088mm的细粉；
步骤二，原材料称量，按照配比称取步骤一处理好的原材料：粒径为3～5mm的煅烧矾土熟料，重量百分比为10%；粒径为1～3mm的煅烧矾土熟料，重量百分比为25%；粒径为0～1mm的硅线石，重量百分比为25%；粒径≤0.074mm的广西粘土粉，重量百分比为10%；粒径≤0.088mm的蓝晶石粉，重量百分比为10%；粒径≤0.088mm的煅烧矾土熟料粉，重量百分比为20%；
步骤三，原材料混合，将步骤二中称量好的各组分原材料混合搅拌均匀，得到混合料；
步骤四，混炼泥料制备，按照混合料:纸浆废液为100:1的重量比加入纸浆废液，混炼10分钟，得到混炼泥料；
步骤五，采用315T气动压力机，将混炼泥料压制成密度＞2.48g/cm3的砖坯；
步骤六，将砖坯装入隧道窑中，在1500℃温度中进行煅烧，制成低线变化率横墙砖成品。
经检测本发明的低线变化率横墙砖理化性能如下表所示：
与一般横墙砖理化性能比较，本发明所制备的低线变化率横墙砖具有永久线变化率小、热震稳定性高、荷重软化温度高、高温蠕变率低特性，能够很好满足我国节能、环保、高效、高温窑炉的技术指标要求。
本发明的技术方案不限于上述具体实施例的限制，凡是根据本发明的技术方案做出的技术变形，均落入本发明的保护范围之内。

Claims (5)

1.一种低线变化率横墙砖，其特征在于，包括以下的原料组分：煅烧矾土熟料、硅线石、广西粘土粉、蓝晶石粉。
2.根据权利要求1所述的一种低线变化率横墙砖，其特征在于，所述原料组分规格及配比如下：
粒径为3～5mm的煅烧矾土熟料，重量百分比为5～10%；
粒径为1～3mm的煅烧矾土熟料，重量百分比为25～30%；
粒径为0～1mm的硅线石，重量百分比为15～25%；
粒径≤0.074mm的广西粘土粉，重量百分比为10～15%；
粒径≤0.088mm的蓝晶石粉，重量百分比为10～20%；
粒径≤0.088mm的煅烧矾土熟料粉，重量百分比为15～20%。
3.如权利要求1-2任一项所述的一种低线变化率横墙砖的制备方法，其特征在于，包括以下步骤：
步骤一，原材料预处理，将煅烧矾土熟料粉碎后筛分出粒径1～3mm和3～5mm的煅烧矾土熟料；将硅线石粉碎后筛分出粒径为0～1mm的硅线石料；将广西粘土研磨成粒径≤0.074mm的细粉，蓝晶石研磨成粒径≤0.088mm的细粉，煅烧矾土熟料研磨成粒径≤0.088mm的细粉；
步骤二，原材料称量，按照配比称取步骤一处理好的原材料：粒径为3～5mm的煅烧矾土熟料，重量百分比为5～10%；粒径为1～3mm的煅烧矾土熟料，重量百分比为25～30%；粒径为0～1mm的硅线石，重量百分比为15～25%；粒径≤0.074mm的广西粘土粉，重量百分比为10～15%；粒径≤0.088mm的蓝晶石粉，重量百分比为10～20%；粒径≤0.088mm的煅烧矾土熟料粉，重量百分比为15～20%；
步骤三，原材料混合，将步骤二中称量好的各组分原材料混合搅拌均匀，得到混合料；
步骤四，混炼泥料制备，按照混合料:纸浆废液为100:1的重量比加入纸浆废液，混炼10分钟，得到混炼泥料；
步骤五，采用气动压力机，将混炼泥料压制成砖坯；
步骤六，将砖坯装入隧道窑中，在1400～1500℃温度中进行煅烧，制成低线变化率横墙砖成品。
4.如权利要求3所述的一种低线变化率横墙砖的制备方法，其特征在于：所述气动压力机压力为315t。
5.如权利要求3所述的一种低线变化率横墙砖的制备方法，其特征在于：所述混炼泥料压制成的砖坯密度＞2.48g/cm3。
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CN1210098A (zh) * 1998-08-25 1999-03-10 李博文 具有高温自增强作用的耐火浇注料及其生产方法
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