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Effect of Silicon on the Pore Structure of White Mud Calcium Carbonate
  
DOI：10.11980/j.issn.0254-508X.2015.11.007
Key Words:calcium carbonate  silicon content  N2 adsorption  fractal
Fund Project:本研究得到浙江理工大学科研启动基金（项目编号14012081-Y）资助。
Author NameAffiliation
夏新兴1 1.浙江理工大学材料与纺织学院，浙江杭州，310018 
陈旭波2，* 2.陕西科技大学轻工与能源学院，陕西西安，710021 
李金宝2 2.陕西科技大学轻工与能源学院，陕西西安，710021 
康　阳2 2.陕西科技大学轻工与能源学院，陕西西安，710021 
余小藏2 2.陕西科技大学轻工与能源学院，陕西西安，710021 
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Abstract:The simulated green liquors containing different silicon contents were prepared, and used for producing calcium carbonate by causticizing, the pore structure characteristics of the white mud calcium carbonate were determined by N2 adsorption, and the surface fractal characteristics were analyzed based on Frenkel-Halsey-Hill (FHH) model. The results showed that specific surface area and cumulative pore volume of the calcium carbonate increaced gradually with increasing silicon, and silicon increase was in favor of forming small mesopore in calcium carbonate. FHH model was used to analyze fractal characteristics of calcium carbonate, the results showed that the surface of calcium carbonate changed gradually from regular form to irregular form with the increase of silicon content.
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