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| Application of Porous Calcium Silicate as Retention Aid and the Mechanism Analysis |
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| DOI：10.11980/j.issn.0254-508X.2014.09.001 |
| Key Words:porous calcium silicate retention aid bulk mechanism |
| Fund Project:本项目受内蒙古自治区重大自然基金项目资助（项目编号：2012ZD0F）。 |
| Author Name | Affiliation | | 孙俊民1，2 | 1.大唐国际高铝煤炭研发中心,内蒙古呼和浩特,010050；2.国家能源高铝煤炭开发利用重点实验室,内蒙古呼和浩特,010050 | | 王成海1，2，* | 1.大唐国际高铝煤炭研发中心,内蒙古呼和浩特,010050；2.国家能源高铝煤炭开发利用重点实验室,内蒙古呼和浩特,010050 | | 张战军1，2 | 1.大唐国际高铝煤炭研发中心,内蒙古呼和浩特,010050；2.国家能源高铝煤炭开发利用重点实验室,内蒙古呼和浩特,010050 | | 宋宝祥3 | 3.中国制浆造纸研究院,北京,100102 | | 魏晓芬1,2 | 1.大唐国际高铝煤炭研发中心,内蒙古呼和浩特,010050；2.国家能源高铝煤炭开发利用重点实验室,内蒙古呼和浩特,010050 | | 陈 杨1,2 | 1.大唐国际高铝煤炭研发中心,内蒙古呼和浩特,010050；2.国家能源高铝煤炭开发利用重点实验室,内蒙古呼和浩特,010050 | | 徐 鹏1,2 | 1.大唐国际高铝煤炭研发中心,内蒙古呼和浩特,010050；2.国家能源高铝煤炭开发利用重点实验室,内蒙古呼和浩特,010050 |
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| Abstract:The porous calcium silicate prepared from fly ash has characteristics of lower density (true density 1.1~1.3 g/cm3), higher bulk volume (bulk density 0.17~0.3 g/cm3), higher porosity (specific surface area 160~400 m2/g) and strong adsorption capacity. Research results showed that ash content of the paper increased from original 22.0% to 29.7% when the talc was used as the filler and the dosage of 5% of porous calcium silicate was added, indicating that porous calcium silicate was able to improve the retention of talc significantly. In addition, the study also showed that pore-effect, hydroxyl effect and nano-effect of the porous calcium silicate appeared in papermaking system were the main reasons leading to significant adsorption and retention functions. |
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