CN110141900A - 一种矿渣微粉过滤用滤料及其生产方法 - Google Patents

一种矿渣微粉过滤用滤料及其生产方法 Download PDF

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CN110141900A
CN110141900A CN201910405490.6A CN201910405490A CN110141900A CN 110141900 A CN110141900 A CN 110141900A CN 201910405490 A CN201910405490 A CN 201910405490A CN 110141900 A CN110141900 A CN 110141900A
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fibrage
fiber
filtrate
machine
weight
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吴飞
袁希龙
刘亚文
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Suzhou Environmental Protection Technology Co Ltd
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Abstract

本发明公开了一种成本低、使用寿命长的矿渣微粉过滤用滤料及其方法，滤料包括基布层、上纤维层和下纤维层，基布层由1300D的涤纶长丝和亚克力纱线1:1混织而成，下纤维层由2.2dtex×64mm亚克力纤维与2.2dtex×51mm涤纶纤维混合而成，下纤维层的亚克力纤维和涤纶纤维的重量比为3:7‑1:1之间；上纤维层由2.0dtex×64mm亚克力纤维与2.0dtex×51mm涤纶纤维混合而成，上纤维层的亚克力纤维和涤纶纤维的重量比为4:6‑1:1之间；基布层的重量为110g‑120g/m2，下纤维层的重量为220g‑230g/m2，上纤维层的重量为230g‑240g/m2；上纤维层、基布层和下纤维层共同针刺加固形成重量为560‑590g/m2的滤料。

Description

一种矿渣微粉过滤用滤料及其生产方法
技术领域
本发明涉及一种矿渣微粉过滤用滤料，同时还涉及该滤料的生产方法。
背景技术
矿渣微粉是钢铁厂将矿渣研磨成细粉，将细粉收集作为生产水泥的原材料。该工况粉尘含量大，含有一定水分和酸碱性。因此用普通的滤料制作成滤袋过滤时由于酸碱及水分作用下慢慢失效满足不了目前长寿命的要求。而若是采用纯亚克力滤料成本相对较高，造成成本增加。
发明内容
本发明所要解决的技术问题是：提供一种成本低、使用寿命长的矿渣微粉过滤用滤料。
本发明所要解决的另一个技术问题是：提供一种矿渣微粉过滤用滤料的生产方法，该生产方法可以生产出成本更低、寿命长、强度满足要求的矿渣微粉过滤用滤料。
为解决上述技术问题，本发明的技术方案是：一种矿渣微粉过滤用滤料，包括基布层、上纤维层和下纤维层，所述基布层由1300D的涤纶长丝和亚克力纱线1:1混织而成，其中亚克力纱线为三股21支纤维互绞而成；下纤维层为净风层，下纤维层由2.2dtex×64mm亚克力纤维与2.2dtex×51mm涤纶纤维混合而成，其中，下纤维层的亚克力纤维和涤纶纤维的重量比为3:7-1:1之间；上纤维层由2.2dtex×64mm亚克力纤维与2.2dtex×51mm涤纶纤维混合而成，其中上纤维层的亚克力纤维和涤纶纤维的重量比为4:6-1:1之间；基布层的重量为110g-120g/m2，下纤维层的重量为220g-230g/m2，上纤维层的重量为230g-240g/m2；上纤维层、基布层和下纤维层共同针刺加固形成重量为560-590g/m2的滤料。
作为一种优选的方案，所述上纤维层的外表面还覆膜有ePTFE微孔薄膜。
作为一种优选的方案，所述上纤维层的外表面通过烧毛处理后形成了若干个均匀的涤纶结点，该ePTFE微孔薄膜通过热压复合于上纤维层的外面。
采用了上述技术方案后，本发明的效果是：该滤料利用亚克力纤维和涤纶纤维混织形成基布层，这样极大的增强了滤料的强力，同时，上下纤维层均采用亚克力纤维和涤纶纤维混纺而成，同时，上纤维层相比下纤维层更细，这样上纤维层作为迎尘面可以更好的过滤矿渣微粉，并且在保证了足够的物理和化学性能的同时减低了成本，这种滤料最终的成品强力径向可达1400N/5cm，纬向可达1800N/5cm，透气性3±0.5m/m2×min@200Pa。
另外，所述上纤维层的外表面还覆膜有ePTFE微孔薄膜，这样进一步的提高了过滤性能，使用该滤料缝合滤袋时把所有缝合的针孔涂胶或贴膜处理，那么这种滤袋在使用过程中可以达到近零排放，彻底回收矿渣微粉，并且满足环保达标排放。
而所述上纤维层的外表面通过烧毛处理后形成了若干个均匀的涤纶结点，该ePTFE微孔薄膜通过热压复合于上纤维层的外面，因此，在热压时，每个涤纶结点又重新熔融这样可以方便ePTFE微孔薄膜粘结，无需涂胶，覆膜工艺更简单。
为解决上述另一个技术问题，本发明的技术方案是：一种矿渣微粉过滤用滤料的生产方法，该生产方法用于生产上述的滤料，其包括以下步骤：
A1、纤维开松
将用于成型上纤维层和下纤维层的亚克力纤维和涤纶纤维分别在上开包机和下开包机上开包；按照工艺的配比纤维定量送至到上粗开松机和下粗开松机上进行粗开松，然后将粗开松的纤维送到上混棉仓和下混棉仓内进行混合均匀后输送到上精开松机和下精开松机上进行精开松；
A2、纤维梳理
将开松好的纤维通过上喂棉箱和下喂棉箱送给上梳理机和下梳理机进行分梳；
A3、铺网
将梳理好的纤维网输送进上铺网机和下铺网机中，通过铺网机将纤维网按照之字形的折叠方式分别铺设在基布的两个表面，其中基布采用上述配比混织而成的基布卷放卷；
组合成型工艺包括以下步骤：
B1、针刺
将铺设好的滤布胚料送入到预刺机中，预刺机通过反复针刺使上滤层和下滤层的纤维相互交错，然后再进入到主刺机中再次针刺；
B2、拉幅定型
针刺后的滤布胚料经过拉幅定型机拉幅确定滤布胚料的幅宽并定型；
B3、烧毛压光
经过拉幅定型后的滤布胚料依次通过烧毛机和压光机进行表面烧毛处理和压光，其中烧压的速度控制在18-20m/min；压光机在室温环境下压光，压力为0.2±0.01Mpa；
B4、分切检验
经检验后按要求分切成各种不同的宽度的滤材后收卷，瑕疵位置进行标记。
其中优选的，所述生产方法还包括覆膜工艺，烧毛后的滤布胚料在表面形成若干个涤纶结点，然后经覆膜机热辊加热后重新融化再并在辊压的作用下与ePTFE微孔膜结合覆膜，覆膜时热辊温度210℃±5℃，压力为0.5-0.6MPa，速度10±1mpm。
采用了上述技术方案后，本发明的效果是：该生产方法可以生产上述的滤料，从而兼顾了成本和过滤性能，使用寿命也更长。
具体实施方式
下面通过具体实施例对本发明作进一步的详细描述。
一种矿渣微粉过滤用滤料，包括基布层、上纤维层和下纤维层，所述基布层由1300D的涤纶长丝和亚克力纱线1:1混织而成，其中亚克力纱线为三股21支纤维互绞而成；下纤维层为净风层，下纤维层由2.2dtex×64mm亚克力纤维与2.2dtex×51mm涤纶纤维混合而成，其中，下纤维层的亚克力纤维和涤纶纤维的重量比为3:7-1:1之间；上纤维层由2.2dtex×64mm亚克力纤维与2.2dtex×51mm涤纶纤维混合而成，其中上纤维层的亚克力纤维和涤纶纤维的重量比为4:6-1:1之间；基布层的重量为110g-120g/m2，下纤维层的重量为220g-230g/m2，上纤维层的重量为230g-240g/m2；上纤维层、基布层和下纤维层共同针刺加固形成重量为560-590g/m2的滤料。
其中，所述上纤维层的外表面还覆膜有ePTFE微孔薄膜。所述上纤维层的外表面通过烧毛处理后形成了若干个均匀的涤纶结点，该ePTFE微孔薄膜通过热压复合于上纤维层的外面。
另外，所述上纤维层的外表面还覆膜有ePTFE微孔薄膜，这样进一步的提高了过滤性能，使用该滤料缝合滤袋时把所有缝合的针孔涂胶或贴膜处理，那么这种滤袋在使用过程中可以达到近零排放，彻底回收矿渣微粉，并且满足环保达标排放。
而所述上纤维层的外表面通过烧毛处理后形成了若干个均匀的涤纶结点，该ePTFE微孔薄膜通过热压复合于上纤维层的外面，因此，在热压时，每个涤纶结点又重新熔融这样可以方便ePTFE微孔薄膜粘结，无需涂胶，覆膜工艺更简单。
另外本发明还公开了一种矿渣微粉过滤用滤料的生产方法，该生产方法用于生产上述的滤料，其包括以下步骤：
A1、纤维开松
将用于成型上纤维层和下纤维层的亚克力纤维和涤纶纤维分别在上开包机和下开包机上开包；按照工艺的配比纤维定量送至到上粗开松机和下粗开松机上进行粗开松，然后将粗开松的纤维送到上混棉仓和下混棉仓内进行混合均匀后输送到上精开松机和下精开松机上进行精开松；
A2、纤维梳理
将开松好的纤维通过上喂棉箱和下喂棉箱送给上梳理机和下梳理机进行分梳；
A3、铺网
将梳理好的纤维网输送进上铺网机和下铺网机中，通过铺网机将纤维网按照之字形的折叠方式分别铺设在基布的两个表面，其中基布采用上述配比混织而成的基布卷放卷；
组合成型工艺包括以下步骤：
B1、针刺
将铺设好的滤布胚料送入到预刺机中，预刺机通过反复针刺使上滤层和下滤层的纤维相互交错，然后再进入到主刺机中再次针刺；
B2、拉幅定型
针刺后的滤布胚料经过拉幅定型机拉幅确定滤布胚料的幅宽并定型；温度为170-190℃，时间为5min,这样可以确保布袋使用过程中的尺寸稳定性。
B3、烧毛压光
经过拉幅定型后的滤布胚料依次通过烧毛机和压光机进行表面烧毛处理和压光，其中烧压的速度控制在18-20m/min；压光机在室温环境下压光，压力为0.2±0.01Mpa；该烧毛操作要求轻重适宜，而且烧毛必须均匀，不能有漏烧部位，压光是利用三辊压光机将刚刚烧过的布面将烧过的毡体表面结点稍微压平，这样覆膜后毡体表面手感比较光滑，无沙皮感觉。
B4、分切检验
经检验后按要求分切成各种不同的宽度的滤材后收卷，瑕疵位置进行标记。
所述生产方法还包括覆膜工艺，烧毛后的滤布胚料在表面形成若干个涤纶结点，然后经覆膜机热辊加热后重新融化再并在辊压的作用下与ePTFE微孔膜结合覆膜，覆膜时热辊温度210℃±5℃，压力为0.5-0.6MPa，速度10±1mpm。这种滤料最终的成品强力径向可达1400N/5cm，纬向可达1800N/5cm，透气性3±0.5m/m2×min@200Pa。
以上所述实施例仅是对本发明的优选实施方式的描述，不作为对本发明范围的限定，在不脱离本发明设计精神的基础上，对本发明技术方案作出的各种变形和改造，均应落入本发明的权利要求书确定的保护范围内。

Claims (5)

1.一种矿渣微粉过滤用滤料，其特征在于：包括基布层、上纤维层和下纤维层，所述基布层由1300D的涤纶长丝和亚克力纱线1:1混织而成，其中亚克力纱线为三股21支纤维互绞而成；下纤维层为净风层，下纤维层由2.2dtex×64mm亚克力纤维与2.2dtex×51mm涤纶纤维混合而成，其中，下纤维层的亚克力纤维和涤纶纤维的重量比为3:7-1:1之间；上纤维层由2.2dtex×64mm亚克力纤维与2.2dtex×51mm涤纶纤维混合而成，其中上纤维层的亚克力纤维和涤纶纤维的重量比为4:6-1:1之间；基布层的重量为110g-120g/m2，下纤维层的重量为220g-230g/m2，上纤维层的重量为230g-240g/m2；上纤维层、基布层和下纤维层共同针刺加固形成重量为560-590g/m2的滤料。
2.如权利要求1所述的一种矿渣微粉过滤用滤料，其特征在于：所述上纤维层的外表面还覆膜有ePTFE微孔薄膜。
3.如权利要求2所述的一种矿渣微粉过滤用滤料，其特征在于：所述上纤维层的外表面通过烧毛处理后形成了若干个均匀的涤纶结点，该ePTFE微孔薄膜通过热压复合于上纤维层的外面。
4.一种矿渣微粉过滤用滤料的生产方法，其特征在于：该生产方法用于生产如权利要求1至4中任一项所述的滤料，其包括以下步骤：
A1、纤维开松
将用于成型上纤维层和下纤维层的亚克力纤维和涤纶纤维分别在上开包机和下开包机上开包；按照工艺的配比纤维定量送至到上粗开松机和下粗开松机上进行粗开松，然后将粗开松的纤维送到上混棉仓和下混棉仓内进行混合均匀后输送到上精开松机和下精开松机上进行精开松；
A2、纤维梳理
将开松好的纤维通过上喂棉箱和下喂棉箱送给上梳理机和下梳理机进行分梳；
A3、铺网
将梳理好的纤维网输送进上铺网机和下铺网机中，通过铺网机将纤维网按照之字形的折叠方式分别铺设在基布的两个表面，其中基布采用上述配比混织而成的基布卷放卷；
组合成型工艺包括以下步骤：
B1、针刺
将铺设好的滤布胚料送入到预刺机中，预刺机通过反复针刺使上滤层和下滤层的纤维相互交错，然后再进入到主刺机中再次针刺；
B2、拉幅定型
针刺后的滤布胚料经过拉幅定型机拉幅确定滤布胚料的幅宽并定型；
B3、烧毛压光
经过拉幅定型后的滤布胚料依次通过烧毛机和压光机进行表面烧毛处理和压光，其中烧压的速度控制在18-20m/min；压光机在室温环境下压光，压力为0.2±0.01Mpa；
B4、分切检验
经检验后按要求分切成各种不同的宽度的滤材后收卷，瑕疵位置进行标记。
5.如权利要求4所述的一种矿渣微粉过滤用滤料的生产方法，其特征在于：所述生产方法还包括覆膜工艺，烧毛后的滤布胚料在表面形成若干个涤纶结点，然后经覆膜机热辊加热后重新融化再并在辊压的作用下与ePTFE微孔膜结合覆膜，覆膜时热辊温度210℃±5℃，压力为0.5-0.6MPa，速度10±1mpm。
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