Cover Image

Recovery of calcium carbonate waste as paper filler in the causticizing process of bamboo kraft pulping

Tian He, Mingyou Liu


In this paper, calcium carbonate waste was recovered as paper filler from the causticizing process of bamboo kraft pulping. The effects of the causticizing process parameters on the filler qualities were investigated, in terms of the whiteness, tear strength, tensile strength and ash content of the filled paper. To investigate the effect of silica content on the qualities of the resultant calcium carbonate filler, the green liquor was desiliconized with aluminum salt modified bentonite prior to the causticizing process to obtain calcium carbonate of various silicon contents, particle size and brightness, and different crystal morphology. It was found that the ionic strength and silicate concentration were the two key factors in affecting the size and shape of the calcium carbonate particles formed in the causticizing process.

Full Text:



Zhang Y.,Li X.,Xu Y. Study on removing silicon green liquid aluminum salt alkali recovery process of wheat straw. China Pulp & Paper Industry[J].2013,(18):26-29.

ZHEN H. Supply and Utilization of Non-wood Fibers and Waste Papers in China Paper Industry. China Pulp &Paper. 2010, (08): 56-64.

Zhu J. The new pet of cellulose fiber-bamboo fiber. Knit-ting Industries, 2003, 6: 23.

Deng W. Distribution of Chinese Bamboo Forest Ecosystem Research Stations. Forest Resources Management 2009, No3, 17.

Ellis M J., Empie J. Towards kraft mill closure: Influence of non-process elements on green liquor dregs settling and filterability. Proceedings of the 56th Appita Annual General Conference, 2002.

Kati Manskinen., Hannu Numesniemi., Risto Pöyköi. Total and extractable non-process elements in green liquor dregs from the chemical recovery circuit of a semi-chemical pulp mill. Chemical Engineering Journal, 2001, 166(3) : 154.

Müller-Steinhagen H., Branch C A. Heat transfer and heat transfer fouling in kraft black liquor evaporators. Experimental Thermal and Fluid Science, 1997, 14(4): 425.

Liu Jing-yang., Wang Ping. Form change of silica in process of pulping. Journal of Beijing Institute of Light Industry, 1999, 17(1): 28.

LI X., LIN T. Investigation on Removal of Silicate in Green Liquor by Flocculation . China Pulp &Paper. 2014, (04). 33.

LIU F. Study on controlling optical properties of calcium carbonate from white mud in straw pulp. Shaanxi university of science and technology, 2012.

Zuo W. The research about the Processing and the applications of the causticized Paper sludge. Nanjing University of Science & Technology, March 2012.

Wang G. The practice in production of refined filler calcium carbonate with lime sludge from alkali recovery. China Pulp & Paper Industry, 2008, 02: 55-60.

Xia X., Du M. Research on the Application of Calcium Carbonate Prepared from Chemical Recovery in Straw Pulping as Filler. Paper and Paper Making, 2012, 08: 50-53.

Fan R. White mud’s comprehensive utilization. Shan dong University, 2008.

Myreen, B, A. Novel Recovery process for Small-Scale Non-wood Pulp Mills.Proceedings from the 1998 TAPPI International Chemical Recovery Conference, Tampa, Florida. 1998.

Mtyeen, b., Helsinki. Process for Recovering Alkali and Black Liquor Containing Silicate. United States Patent, 6183 598, 2001. 2.

Zhao X, Lu L. Effect of C/S Ratios on Morphology of Calcium Silicate Hydrates Synthesized by Solution Reaction Method. The World of Building Materials, 2010, 31(2): 7-9.

He B., Liu Guihua. Studies on the formation of hydrate calcium silicate in the strong caustic solution. Journal of Central South University (Science and Technology), 1998, 29(3): 245-248.

Jeffrey J., Chen, Jeffrey J., Thomas., Hal F.W. Taylor, et al. Solubility and structure of calcium silicate hydrate. Cement and Concrete Research, 2004, 34: 1499-1519.

Daisuke Sugiyama. Chemical alteration of calcium silicate hydrate (C-S-H) in sodium chloride solution. Cement and Concrete Research,2008,38:1270-1275.

Hu J., Zhao L., He B. Comparison of fundamental characteristics and filling properties between lime mud from alkali recovery and commercial PCC. China Pulp & Paper Industry, 2011, 20: 24-28.

Wang Z., Wang X., Wang J. Effects of Green Liquor on Optical Properties of White Mud. Paper and Paper Making, 2011, 12: 55-57.

Liu L., Huang X., Ying Z. The effect of silicon content in green liquor on properties of causticizing calcium carbonate. China Pulp & Paper Industry, 2013, 34(4): 26-28.

Yang Y., Liu J., Su Y. Study on the Filling Properties of White Mud from Straw Pulping. Paper and Paper Making, 2012, 31(3): 56-59.

Meng YuanXing., Liu JinGang. Effect of Causticizing Conditions on the Lime Mud's Structure Properties in the Straw Pulp Alkali Recovery. Paper Science & Technology, 2014, 03: 79-84.

Zhang Y., Li X., Xu Y. Study on removing silicon green liquid aluminum salt alkali recovery process of wheat straw. China Pulp & Paper Industry [J].2013,(18):26-29.

Lin T., Fu Y., Xu Y. Study on adsorption kinetics of Portland green liquid bentonite modified aluminum salt. Journal of Shaanxi University of Science & Technology (Natural Science Edition), 2015,(05):1-7.



  • There are currently no refbacks.

Copyright (c) 2017 Tian He, Mingyou Liu

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.