草浆绿液硅含量对白泥碳酸钙性能的影响  

Effect of Silicon Content in Green Liquor from Straw Pulping on Properties of Calcium Carbonate Prepared from Alkali Recovery

作　　者：夏新兴[1] 王幸[1] 李娜[1] 童树华 

机构地区：[1]陕西科技大学轻工与能源学院,陕西西安710021 [2]浙江金昌纸业有限公司,浙江龙游324400

出　　处：《纸和造纸》2013年第11期59-63,共5页Paper and Paper Making

基　　金：陕西省教育厅科研项目(11JS016)

摘　　要：针对草浆绿液硅含量高的问题,对其进行CO2法除硅,探讨硅含量对苛化白泥及其所加填纸张性能的影响。结果表明:随着绿液除硅率的提高,绿液中的硅含量下降,得到的白泥碳酸钙平均粒径逐渐下降,比表面积增加,沉降体积升高,吸油值下降,白度增加。用于纸张加填时,纸张的光学性能、物理强度以及抗水性都有了明显的改善。当绿液的除硅率达到93%,硅含量为0.62 g·L-1时,制得的白泥能代替商品PCC用于纸张加填。Removing silicon from the green liquor of straw pulping was aimed at high content in green liquor.＇l-he effect of silicon content in green liquor on properties of calcium carbonate prepared from alkali recovery and paper added with it were discussed. The result showed that with the increase of desilication rate, the content of green liquor, average particle size and oil absorption of causticizing calcium carbonate were decreased, and specific surface area, sedimentation volume and whiteness were increased. When the lime mud was used as filler in paper making, the optical properties, strength properties and water resistance were improved obviously. The quality of causticizing calcium carbonate can replace the commercial PCC as papermaking filler when the desilication rate of the green liquid is more than 93% and silicon content is 0.62 g·L-1.

关 键 词：草浆 绿液 硅含量 除硅 

分 类 号：X793[环境科学与工程—环境工程]