CAJ | 학술논문

针对草浆绿液硅含量高的问题，对绿液进行二氧化碳法除硅，并探讨了不同硅含量对苛化白泥及成纸性能的影响．结果表明：随着绿液除硅率的提高，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．当其用于纸张加填时，纸张的光学性能、物理强度以及抗水性能都有了明显改善．当绿液的除硅率达到93％，硅含量为0．62 g/L时，制得的白泥碳酸钙能代替商品PCC用于纸张加填．
침대초장록액규함량고적문제，대록액진행이양화탄법제규，병탐토료불동규함량대가화백니급성지성능적영향．결과표명：수착록액제규솔적제고，득도적백니탄산개평균립경축점하강，비표면적증가，침강체적승고，흡유치하강，백도증가．당기용우지장가전시，지장적광학성능、물리강도이급항수성능도유료명현개선．당록액적제규솔체도93％，규함량위0．62 g/L시，제득적백니탄산개능대체상품PCC용우지장가전．
Removing silicon from the green liquor of straw pulping was aimed at high content in green liquor .The effect of silicon content in green liquor on properties of calcium carbon-ate prepared from alkali recovery and paper made by it were dicussed .The results show that with the increase of desilication rate ,the content in green liquor ,average particle size and oil absorption of causticizing calcium carbonate were decreased ,and specific surface ,sedimenta-tion 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 obvi-ously .The quality of causticizing calcium carbonate can replace the commercial PCC as pa-permaking filler when the desilication rate of the green liquid is more than 93% and silicon content is 0 .62 g/L .