硅含量、两种苛化工艺对白泥特性及纸张加填效果的影响

The effect of silicon content and different causticization process on the properties of lime mud calcium carbonate and the performance of its loaded paper

通过控制ALBM的加入量获得不同硅含量的绿液,对其分别进行快速式苛化及间歇式苛化,从而获得不同硅含量和不同苛化工艺的白泥碳酸钙,并检测其白度和粒径.将获得的白泥碳酸钙加填抄纸,研究了不同硅含量和不同苛化工艺对所得白泥碳酸钙加填纸性能的影响,并且将白泥碳酸钙加填纸与商品碳酸钙加填纸进行比较.结果表明,绿液中硅含量越少,所得白泥碳酸钙加填纸的性能就越接近商品碳酸钙加填纸的性能.此外,间歇式苛化所得白泥碳酸钙的白度和粒径匀整性均优于快速式苛化,因此其纸张加填效果更好.

In this paper,the green liquid with different silicon content was obtained by controlling the addition of ALBM,and then the lime mud calcium carbonate was obtained by rapid causticization and batch causticization respectively.Then measured the whiteness and particle size of the obtained calcium carbonate were measured.The effects of silicon content and two causticization processes on the performance of the obtained lime mud calcium carbonate loaded paper were studied,and the obtained lime mud calcium carbonate was compared with the commercial calcium carbonate.The results showed that as the silicon content in the green liquor was less,the performance of the obtained loaded paper with the lime mud calcium carbonate was closer to that of the loaded paper with commercial calcium carbonate.In addition,the whiteness and particle size uniformity of batch causticization lime mud calcium carbonate were better than that of rapid causticization,and the paper loading effect of it was also better.