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Study of Modified Bentonite Used as Microparticle Retention Aid in Papermaking
Author(s): 
Pages: 479-482
Year: Issue:  4
Journal: RESOURCES ENVIRONMENT & ENGINEERING

Keyword:  膨润土改性皂土助留助滤剂;
Abstract: 采用湖北省某地膨润土,经改性制作出皂土,用于造纸作助留助滤剂,取得良好的效果.通过室内用无机盐和其它改性试剂将膨润土改性后,再用气流磨粉碎至-1 500目,使改性出的皂土得到有效活化,产生较大的比表面积和吸附率,Zeta电位达-16.7 mV.研究开发出的改性皂土经中国制浆造纸研究院在Hydrocol系统中,对废报纸脱墨浆滤水助留性能影响的比较试验,发现浆料加入改性皂土后,滤水时间缩短,细小纤维的保留率增高,有效降低了废水浓度,提高了白水回收率.
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