CN110639661A - 一种铝电解槽大修渣的湿法粉磨系统 - Google Patents
一种铝电解槽大修渣的湿法粉磨系统 Download PDFInfo
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Abstract
本发明涉及电解铝废弃物处理设备技术领域,具体为一种铝电解槽大修渣的湿法粉磨系统,包括基座,基座上设有湿式球磨机和负压机,基座固定连接支柱,支柱固定连接管箱,管箱左侧壁固定连接衬套,湿式球磨机的出口端法兰连接圆直筒,圆直筒伸入管箱并与衬套旋转配合,管箱右侧壁固定连接直硬管,直硬管内设有滤网,直硬管固定连接负压软管道,负压软管道与负压机的进口端固定连接,负压机的出口端与尾气回收管道固定连接。有益效果为:本发明采用湿式球磨机对铝电解大修渣进行湿法粉磨,有效避免了粉磨过程中的粉尘危害,并通过负压机在湿式球磨机的一端形成负压,避免了有毒气体在粉磨设备腔体的富集。
Description
技术领域
本发明涉及电解铝废弃物处理设备技术领域,具体为一种铝电解槽大修渣的湿法粉磨系统。
背景技术
铝电解槽大修渣产生于铝电解槽的定期维修和材料更换,主要成分为一些废阴(阳)极炭块、耐火材料以及防渗透材料,因其含有可溶性的氟化物和少量的氰化物,被列为I类危险废物。
现有技术中,湿法浸出是铝电解槽大修渣无害化主要处理技术。为保证处理效果,需要把铝电解槽大修渣进行粉磨,由于铝电解槽大修渣与水接触会产生释放出氨气与甲烷等有毒气体,操作人员吸入会造成身体损伤,当气体达到一定的浓度阈值,还会造成爆炸事故,因此,铝电解槽大修渣的粉磨方式都是干式粉磨。
干式粉磨过程中会产生大量粉尘,这些粉尘具有粒度小、浓度大、毒性高、不易沉降等特点,如果防护不当,会严重污染车间的作业环境,形成二次污染,危害职工的身体健康。
发明内容
本发明的目的在于提供一种铝电解槽大修渣的湿法粉磨系统,以解决上述背景技术中提出的问题。
为实现上述目的,本发明提供如下技术方案:一种铝电解槽大修渣的湿法粉磨系统,包括基座,所述基座上设有湿式球磨机和负压机,所述基座固定连接支柱,所述支柱固定连接管箱,所述管箱左侧壁固定连接衬套,所述湿式球磨机的出口端法兰连接圆直筒,所述圆直筒伸入管箱并与衬套旋转配合,所述管箱右侧壁固定连接直硬管,所述直硬管内设有滤网,直硬管固定连接负压软管道,所述负压软管道与负压机的进口端固定连接,所述负压机的出口端与尾气回收管道固定连接。
优选的,所述负压机采用离心鼓风机,负压机的最大风压为110kPa。
优选的,所述管箱底部固定连接卸料管,所述卸料管上设有电动调节阀门,所述电动调节阀门采用D943H-16C不锈钢电动法兰硬密封蝶阀。
优选的,所述管箱顶部设有气体传感器,所述气体传感器包括氨气传感器TGS2444和KG9701A甲烷传感器。
优选的,所述直硬管的两端均设有外螺纹,直硬管的两端分别与管箱和负压软管道螺纹连接。
优选的,所述滤网由不锈钢金属丝平纹编织而成,滤网外周边缘处焊接有圆环框架,所述圆环框架与直硬管螺纹连接,滤网的孔径不小于75μm。
与现有技术相比,本发明的有益效果是:
1.本发明采用湿式球磨机对铝电解大修渣进行湿法粉磨,有效避免了粉磨过程中的粉尘危害,并通过负压机在湿式球磨机的一端形成负压,迅速的抽离有害气体,避免了有毒气体在粉磨设备腔体的富集;
2.滤网可以很好的隔绝大修渣粉末,避免大修渣粉末进入负压软管道,降低后续有毒气体回收处理难度,并且由于直硬管的两端分别与管箱和负压软管道螺纹连接,使得直硬管易于拆卸,方便更换滤网。
附图说明
图1为本发明结构示意图;
图2为本发明中管箱结构示意图。
图中:1基座、2湿式球磨机、3负压机、4支柱、5管箱、6衬套、7圆直筒、8直硬管、9滤网、10负压软管道、11尾气回收管道、12卸料管、13电动调节阀门、14气体传感器。
具体实施方式
下面将结合本发明实施例中的附图,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。
请参阅图1至图2,本发明提供一种技术方案:一种铝电解槽大修渣的湿法粉磨系统,包括基座1,基座1上设有湿式球磨机2和负压机3。铝电解槽大修渣经过湿式球磨机2的入料端进入粉磨腔体,湿式球磨机2的入料端附近设置了补加水阀门,可以控制补给水量,调节湿式球磨机2内粉磨浆料的浓度为30%—60%,利用补给水吸附粉尘,避免湿式球磨机2出现粉尘危害。在粉磨的过程中,铝电解槽大修渣与水反应释放出氨气和甲烷等有毒气体,并在粉磨腔体内富集。基座1固定连接支柱4,支柱4固定连接管箱5,管箱5左侧壁与衬套6的外壁焊接,湿式球磨机2的出口端法兰连接圆直筒7,圆直筒7伸入管箱5并与衬套6旋转配合。
经过湿式球磨机2内粉磨腔体的筛板筛选后,符合规格的铝电解槽大修渣粉末进入圆直筒7中,圆直筒7侧壁开设有通孔,铝电解槽大修渣粉末随圆直筒7一同旋转并经上述通孔进入管箱5内。滤网9由不锈钢金属丝平纹编织而成,滤网9外周边缘处焊接有圆环框架,圆环框架与直硬管8螺纹连接,管箱5右侧壁固定连接直硬管8,直硬管8内设有滤网9,直硬管8固定连接负压软管道10,滤网9的孔径为75μm,可以很好的隔绝大修渣粉末,避免大修渣粉末进入负压软管道10,降低后续有毒气体回收处理难度。并且,由于直硬管8的两端均设有外螺纹,直硬管8的两端分别与管箱5和负压软管道10螺纹连接,使得直硬管8易于拆卸,方便更换滤网9。
负压软管道10与负压机3的进口端固定连接,负压机3采用离心鼓风机,负压机3的最大风压为110kPa。负压机3的出口端与尾气回收管道11固定连接。开启负压机3,负压机3在管箱5内形成一定的负压,把管箱5内的有毒气体迅速抽离,从而保证湿式球磨机2的粉磨腔体内的有毒气体浓度低于预定阈值。
管箱5底部固定连接卸料管12,卸料管12上设有电动调节阀门13,电动调节阀门13采用D943H-16C不锈钢电动法兰硬密封蝶阀,其工作原理和安装方式均为现有技术,本文不再赘述。从圆直筒7流出的废渣堆积在管箱5内,打开电动调节阀门13,即可以将废渣排出管箱5。通过关闭电动调节阀门13,使得管箱5底部完全封闭,避免管箱5底部出现开口,有利于负压机3向湿式球磨机2内抽气。
管箱5顶部设有气体传感器14,气体传感器14包括氨气传感器TGS2444和KG9701A甲烷传感器,氨气传感器TGS2444和KG9701A甲烷传感器的工作原理和安装方式均为现有技术,本文不再赘述。通过气体传感器14,可以快速检测出管箱5内有毒气体含量,简单直观、安全可靠。
尽管已经示出和描述了本发明的实施例,对于本领域的普通技术人员而言,可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型,本发明的范围由所附权利要求及其等同物限定。
Claims (6)
1.一种铝电解槽大修渣的湿法粉磨系统,包括基座(1),所述基座(1)上设有湿式球磨机(2)和负压机(3),其特征在于:所述基座(1)固定连接支柱(4),所述支柱(4)固定连接管箱(5),所述管箱(5)左侧壁固定连接衬套(6),所述湿式球磨机(2)的出口端法兰连接圆直筒(7),所述圆直筒(7)伸入管箱(5)并与衬套(6)旋转配合,所述管箱(5)右侧壁固定连接直硬管(8),所述直硬管(8)内设有滤网(9),直硬管(8)固定连接负压软管道(10),所述负压软管道(10)与负压机(3)的进口端固定连接,所述负压机(3)的出口端与尾气回收管道(11)固定连接。
2.根据权利要求1所述的一种铝电解槽大修渣的湿法粉磨系统,其特征在于:所述负压机(3)采用离心鼓风机,负压机(3)的最大风压为110kPa。
3.根据权利要求1所述的一种铝电解槽大修渣的湿法粉磨系统,其特征在于:所述管箱(5)底部固定连接卸料管(12),所述卸料管(12)上设有电动调节阀门(13),所述电动调节阀门(13)采用D943H-16C不锈钢电动法兰硬密封蝶阀。
4.根据权利要求1所述的一种铝电解槽大修渣的湿法粉磨系统,其特征在于:所述管箱(5)顶部设有气体传感器(14),所述气体传感器(14)包括氨气传感器TGS2444和KG9701A甲烷传感器。
5.根据权利要求1所述的一种铝电解槽大修渣的湿法粉磨系统,其特征在于:所述直硬管(8)的两端均设有外螺纹,直硬管(8)的两端分别与管箱(5)和负压软管道(10)螺纹连接。
6.根据权利要求1所述的一种铝电解槽大修渣的湿法粉磨系统,其特征在于:所述滤网(9)由不锈钢金属丝平纹编织而成,滤网(9)外周边缘处焊接有圆环框架,所述圆环框架与直硬管(8)螺纹连接,滤网(9)的孔径不小于75μm。
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