CN112225546A - 一种硅铝空心微珠、其制备方法及其应用 - Google Patents
一种硅铝空心微珠、其制备方法及其应用 Download PDFInfo
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Abstract
本发明提供了一种硅铝空心微珠、其制备方法及其应用,其中硅铝空心微珠的制备方法,包括以下步骤:S1、脱碳;使用等离子脉冲将粉煤灰破碎,脱除粉煤灰内的碳微粒;S2、通过气流法将处理后的粉煤体制成空心微珠。本硅铝空心微珠、其制备方法及其应用,能够有效利用PM2.5粉煤灰制备硅铝空心微珠,为PM2.5粉煤灰提供了新的处理途径。
Description
技术领域
本发明涉及空心微珠技术领域,尤其涉及一种硅铝空心微珠、其制备方法及其应用。
背景技术
细颗粒物(PM2.5)污染已成为我国突出的大气环境问题,是造成大气能见度降低、形成灰霾天气的主要原因。大气中细颗粒物PM2.5的来源包括自然源和人为源,人为源又可分为固定源和移动源,前者如燃料燃烧、工业生产过程,后者如交通运输等。近年来,国内学者对国内部分城市大气颗粒物源解析研究结果表明,燃煤电厂是大气细颗粒物PM2.5的重要来源。
目前对于燃煤电厂的PM2.5暂无较好的处理方法,只能通过一些手段在生产过程中进行排放控制。
发明内容
有鉴于此,本发明要解决的技术问题是提供一种硅铝空心微珠、其制备方法及其应用,能够有效利用PM2.5粉煤灰制备硅铝空心微珠,为PM2.5粉煤灰提供了新的处理途径。
本发明的技术方案是这样实现的:
一种硅铝空心微珠的制备方法,包括以下步骤:
S1、脱碳;
使用等离子脉冲将粉煤灰破碎,脱除粉煤灰内的碳微粒;
S2、通过气流法将处理后的粉煤体制成空心微珠。
优选的,所述S1中,脱除粉煤灰内的碳微粒具体包括:
完全燃烧脱除粉煤灰内的碳微粒。
优选的,所述S2具体包括:
将处理后的粉煤体通过高电压等离子球化装置一次成球,制得前驱物;
将前驱物加热至1300-1400℃,通过气流法将前驱物制成空心微珠。
优选的,所述S2具体包括:
通过气流法将前驱物制成空心微珠时,分选转速不高于350转/分,料斗温度不高于65℃。
优选的,通过气流法将前驱物制成空心微珠时,分级轮清洗空气压力0.2~0.3Mpa,电机轴承清洗空气压力0.05~0.1Mpa,捕集器脉冲空气压力0.4~0.5Mpa。
优选的,还包括:
S3、将制得的空心微珠置入纳米分离多级分选系统进行分选。
优选的,还包括:
S4、微珠表面处理。
优选的,所述S4具体包括:
通过表面改性设备对微珠表面进行处理。
本发明还提出了一种硅铝空心微珠,通过上述所述的制备方法制得。
本发明还提出了一种硅铝空心微珠在复合材料中的应用。
本发明提出的硅铝空心微珠、其制备方法及其应用,通过对粉煤灰破碎后脱碳,可以通过气流法制得硅铝空心微珠,为PM2.5粉煤灰提供了新的处理途径。
具体实施方式
下面将对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
实施例1
一种硅铝空心微珠的制备方法,包括以下步骤:
S1、脱碳;
使用等离子脉冲将粉煤灰破碎,脱除粉煤灰内的碳微粒;
S2、通过气流法将处理后的粉煤体制成空心微珠。
所述S1中,脱除粉煤灰内的碳微粒具体包括:
完全燃烧脱除粉煤灰内的碳微粒。
所述S2具体包括:
将处理后的粉煤体通过高电压等离子球化装置一次成球,制得前驱物;
将前驱物加热至1300℃,通过气流法将前驱物制成空心微珠。
通过气流法将前驱物制成空心微珠时,分选转速300转/分,温度60℃。
通过气流法将前驱物制成空心微珠时,工作流程为:
启动引风机,引风机运行正常后,开启引风机进气闸,调整风量;
启动压缩空气冷冻干燥器,开启进气阀及冷却水;
启动空压机,调节好各路气压;
调节变频器频率为零时启动分级轮电机,逐步升高变频器频率;
启动主机的高压电源;将分选转速设定到300转/分,然后启动分选圆筒传动电机。
启动圆筒内加热器,将圆筒温度设定到60℃;
将给料转速设定到300转/分,然后启动给料器。
分级轮清洗空气压力0.2Mpa,电机轴承清洗空气压力0.05Mpa,捕集器脉冲空气压力0.4Mpa。
S3、将制得的空心微珠置入纳米分离多级分选系统进行分选。
S4、微珠表面处理。
通过表面改性设备对微珠表面进行处理。
实施例2
一种硅铝空心微珠的制备方法,包括以下步骤:
S1、脱碳;
使用等离子脉冲将粉煤灰破碎,脱除粉煤灰内的碳微粒;
S2、通过气流法将处理后的粉煤体制成空心微珠。
所述S1中,脱除粉煤灰内的碳微粒具体包括:
完全燃烧脱除粉煤灰内的碳微粒。
所述S2具体包括:
将处理后的粉煤体通过高电压等离子球化装置一次成球,制得前驱物;
将前驱物加热至1400℃,通过气流法将前驱物制成空心微珠。
通过气流法将前驱物制成空心微珠时,分选转速350转/分,温度65℃。
通过气流法将前驱物制成空心微珠时,工作流程为:
启动引风机,引风机运行正常后,开启引风机进气闸,调整风量;
启动压缩空气冷冻干燥器,开启进气阀及冷却水;
启动空压机,调节好各路气压;
调节变频器频率为零时启动分级轮电机,逐步升高变频器频率;
启动主机的高压电源;将分选转速设定到300转/分,然后启动分选圆筒传动电机。
启动圆筒内加热器,将圆筒温度设定到60℃;
将给料转速设定到300转/分,然后启动给料器。
分级轮清洗空气压力0.3Mpa,电机轴承清洗空气压力0.1Mpa,捕集器脉冲空气压力0.5Mpa。
S3、将制得的空心微珠置入纳米分离多级分选系统进行分选。
S4、微珠表面处理。
通过表面改性设备对微珠表面进行处理。
实施例3
一种硅铝空心微珠的制备方法,包括以下步骤:
一种硅铝空心微珠的制备方法,包括以下步骤:
S1、脱碳;
使用等离子脉冲将粉煤灰破碎,脱除粉煤灰内的碳微粒;
S2、通过气流法将处理后的粉煤体制成空心微珠。
所述S1中,脱除粉煤灰内的碳微粒具体包括:
完全燃烧脱除粉煤灰内的碳微粒。
所述S2具体包括:
将处理后的粉煤体通过高电压等离子球化装置一次成球,制得前驱物;
将前驱物加热至1350℃,通过气流法将前驱物制成空心微珠。
通过气流法将前驱物制成空心微珠时,分选转速320转/分,温度62℃。
通过气流法将前驱物制成空心微珠时,工作流程为:
启动引风机,引风机运行正常后,开启引风机进气闸,调整风量;
启动压缩空气冷冻干燥器,开启进气阀及冷却水;
启动空压机,调节好各路气压;
调节变频器频率为零时启动分级轮电机,逐步升高变频器频率;
启动主机的高压电源;将分选转速设定到320转/分,然后启动分选圆筒传动电机。
启动圆筒内加热器,将圆筒温度设定到62℃;
将给料转速设定到320转/分,然后启动给料器。
分级轮清洗空气压力0.25Mpa,电机轴承清洗空气压力0.08Mpa,捕集器脉冲空气压力0.45Mpa。
S3、将制得的空心微珠置入纳米分离多级分选系统进行分选。
S4、微珠表面处理。
通过表面改性设备对微珠表面进行处理。
上述实施例中,通过等离子气体快速膨胀形成冲击波破碎粉煤灰中的结块体。完全燃烧彻底脱碳后就剩粉煤灰,没有残余。
由于硅铝空心微珠有较大的比表面积,且表面有许多毛细孔,吸附力很强,此时,在气流法成珠之前,让水或低沸点的物质渗透进去,当温度上升时,低沸点的物质就会挥发产生高压蒸汽,而形成一个向外的力,将给料转速设定到不高于350转/分,粉体表面的活性键将粉体与高分子紧紧抱住,产生一个向内的力,此时温度不断升高,蒸汽压力也随之增大,当向外的力大于向内的拉力时,就产生了微泡。当制品受到冲击时,纳米尺度的微泡正好起到缓冲作用,还可以提高制品的冲击强度。
利用物理、化学方法对微珠表面加工处理,提高微珠表面光滑度、和流变性,填加到聚合物材料中,应力集中小,颗粒细小使得填充效率高,接触面积大,提高复合材料加工流变性,和材料机械性、耐热性。
本申请的主要流程为:
粉煤灰自储罐仓进入风选分级设备分级,将大块结块粉煤灰分离后破碎;
将粉煤灰子啊一个循环中脉冲破碎、分离杂质、表面处理、除尘除炭;
将分选后的粉煤灰进入高电压等离子球化装置、球化、致密化;
利用粉煤灰本身含水量,启动圆筒内加热器,当温度升至1300~1500度、转速设定到适宜值(300-350转/分)时粉煤灰液滴经气流成空心微珠。
空心微珠进入纳米分离多级分选(常规设备)系统。分选出不同的目数、即800目~1250目~2500目~5000目~8000目~10000目级别。不同的目数有不同的用途。
依照不同要求进入表面改性设备(常规设备);
改性后微珠进入贮仓或直接包装。
制得的硅铝空心微珠的参数如下表所示:
表1:硅铝空心微珠参数表
本发明利用火力发电厂大气污染物PM2.5粉尘为原材料制造的超细空心微球形材料、该产品是一种高强度、低密度、轻质、非金属超细的空心网状陶瓷球体粉料。其主要化学成分是:二氧化硅(SiO2)和三氧化二铝(Al2O3)。这项发明解决了纳米材料生产过程中超细氧化粉体的团聚的难题。该高性能硅基铝基微纳米球基础性新材料。
最后需要说明的是:以上所述仅为本发明的较佳实施例,仅用于说明本发明的技术方案,并非用于限定本发明的保护范围。凡在本发明的精神和原则之内所做的任何修改、等同替换、改进等,均包含在本发明的保护范围内。
Claims (10)
1.一种硅铝空心微珠的制备方法,其特征在于,包括以下步骤:
S1、脱碳;
使用等离子脉冲将粉煤灰破碎,脱除粉煤灰内的碳微粒;
S2、通过气流法将处理后的粉煤体制成空心微珠。
2.如权利要求1所述的硅铝空心微珠的制备方法,其特征在于,所述S1中,脱除粉煤灰内的碳微粒具体包括:
完全燃烧脱除粉煤灰内的碳微粒。
3.如权利要求1所述的硅铝空心微珠的制备方法,其特征在于,所述S2具体包括:
将处理后的粉煤体通过高电压等离子球化装置一次成球,制得前驱物;
将前驱物加热至1300-1400℃,通过气流法将前驱物制成空心微珠。
4.如权利要求3所述的硅铝空心微珠的制备方法,其特征在于,所述S2具体包括:
通过气流法将前驱物制成空心微珠时,分选转速不高于350转/分,料斗温度不高于65℃。
5.如权利要求3所述的硅铝空心微珠的制备方法,其特征在于,通过气流法将前驱物制成空心微珠时,分级轮清洗空气压力0.2~0.3Mpa,电机轴承清洗空气压力0.05~0.1Mpa,捕集器脉冲空气压力0.4~0.5Mpa。
6.如权利要求1-4任一项所述的硅铝空心微珠的制备方法,其特征在于,还包括:
S3、将制得的空心微珠置入纳米分离多级分选系统进行分选。
7.如权利要求1-4任一项所述的硅铝空心微珠的制备方法,其特征在于,还包括:
S4、微珠表面处理。
8.如权利要求7所述的硅铝空心微珠的制备方法,其特征在于,所述S4具体包括:
通过表面改性设备对微珠表面进行处理。
9.一种硅铝空心微珠,其特征在于,通过上述权利要求1-4任一项所述的制备方法制得。
10.一种如权利要求9所述的硅铝空心微珠在复合材料中的应用。
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