Calcination-carbonization two-step process to improve the brightness of fly ash and its application in paper filling
Source abstract
Abstract
Abstract Chromogenic sources such as carbon particles and magnetic particles are the key factors restricting the brightness of fly ash. This study explored the feasibility of calcination-carbonation two-step method to improve the brightness of fly ash and apply it to paper filling. The results show that Under the condition of high temperature, the unburned carbon particles in fly ash are removed, and the brightness of fly ash is increased from 30 %ISO to 49 %ISO with the increase of burning loss. The dense calcium carbonate coating can be formed on the surface of fly ash particles modified by the carbonation reaction process after high temperature calcination, and the brightness of fly ash can be further raised to about 66 %ISO. The composite filler prepared by two-step method can be used to paper filling, the brightness of the paper can reach 76 % ISO, and it has good opacity at 20 % filling. Therefore, it is feasible to prepare fly ash-based composite filler by calcining-carbonization method.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Coal and Its By-products · Recycling and utilization of industrial and municipal waste in materials production · Concrete and Cement Materials Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
State Key Laboratory of Pulp and Paper Engineering , 26467 South China University of Technology , , Guangzhou , China
References (26)
Show source-provided references
1. Blissett, R.S., Rowson, N.A. (2012) A review of the multi-component utilisation of coal fly ash. Fuel 97(7):1–23.10.1016/j.fuel.2012.03.024 ↗
2. Bradshaw, D.J., Oostendorp, B., Harris, P.J. (2005) Development of methodologies to improve the assessment of reagent behavior in flotation with particular reference to collectors and depressants. Miner. Eng. 18(2):239–246.10.1016/j.mineng.2004.09.012 ↗
3. Chatterjee, D., Reghunath, A., Kadirvel, K., Ahmad, R., Singh, A.K., Ravishankar, N. (2017) Orientation selection during heterogeneous nucleation: implications for heterogeneous catalysis. J. Phys. Chem. C 121(18):10027–10037.10.1021/acs.jpcc.7b02237 ↗
4. Cho, H., Oh, D., Kim, K. (2005) A study on removal characteristics of heavy metals from aqueous solution by fly ash. J. Hazard. Mater. 127(1):187–195.10.1016/j.jhazmat.2005.07.019 ↗
5. Fan, Y.M., Qian, X.R. (2012) Study of fly ash used as filler for papermaking. China Pap. 31(4):22–26.
6. He, S.Y., Li, H.Q., Li, S.P., Li, Y.H., Xie, Q. (2014) The kinetics of alkali-removing desilication of high-alumina fly ash in a pulverized coal furnace. Chin. J. Nonferr. Met. 24(7):1888–1894.
7. Li, G., Deng, L., Liu, J., Cao, Y., Zhang, H., Ran, J. (2015) A new technique for removing unburned carbon from coal fly ash at an industrial scale. Coal Prep. 35(5):273–279.10.1080/19392699.2015.1008098 ↗
8. Nobbs, J.H. (1985) Kubelka–Munk theory and the prediction of reflectance. Color. Technol. 15(1):66–75.10.1111/j.1478-4408.1985.tb03737.x ↗
9. Sanjay, A., Sinha, K. (2009) Effects of pulverized coal fly-ash addition as a wet-end filler in papermaking. World Pulp Pap. 7(9):3–7.
10. Shaikh, F.U.A., Supit, S.W.M. (2014) Mechanical and durability properties of high volume fly ash (HVFA) concrete containing calcium carbonate (CaCO3) nanoparticles. Constr. Build. Mater. 70(70):309–321.10.1016/j.conbuildmat.2014.07.099 ↗
11. Shao, J.B. (1997) Ways to reduce the carbon content of fly ash. Compr. Utiliz. Fly Ash 2(2):61–64.
12. Sinha, A.S.K., Saini, M.S., Singh, S.P. (2014) Utilisation of pulverised coal fly–ash as filler and rice straw as fibrous raw material for manufacturing of special grade paper. Int. J. Environ. Eng. 6(1):91–99.10.1504/IJEE.2014.057839 ↗
13. Tang, D., Harvey, C. (2000) Experimental study of screen and magnetic separation of fly ash from power station. J. China Univ. Min. Technol. 29(5):468–471.
14. Tiller, W.A. (1991) The Science of Crystallization: Microscopic Interfacial Phenomena. Cambridge University Press, Cambridge. pp. 204–232.10.1017/CBO9780511623158 ↗
15. Vassilev, S.V., Vassileva, C.G. (2007) A new approach for the classification of coal fly ashes based on their origin, composition, properties, and behaviour. Fuel 86(10):1490–1512.10.1016/j.fuel.2006.11.020 ↗
16. Wang, S., Terdkiatburana, T., Tadé, M.O. (2008) Single and co-adsorption of heavy metals and humic acid on fly ash. Sep. Purif. Technol. 58(3):353–358.10.1016/j.seppur.2007.05.009 ↗
17. Wu, P., Zhang, M., Wang, J., Song, S. (2012) Feasibility study on co-production of new activated calcium silicate fly ash as papermaking filler. China Pap. 31(12):27–31.
18. Wu, P., Zhang, M., Wang, J., Song, S., Liu, F. (2013a) Comparison of the effect of a new fly ash-based calcium silicate with calcium carbonate and talc in paper filling. Pap. Sci. Technol. 32(3):90–94.
19. Wu, P., Zhang, M., Wang, J., Song, S., Liu, F. (2013b) Application and research status of fly ash in paper industry. Pap. Sci. Technol. 32(4):58–63.
20. Xu, D., Li, H., Bao, W., Wang, C. (2016) A new process of extracting alumina from high-alumina coal fly ash in NH4HSO4+H2SO4 mixed solution. Hydrometallurgy 165(OCT):336–344.10.1016/j.hydromet.2015.12.010 ↗
21. Yan, D., Zeng, Q., Xu, S., Zhang, Q., Wang, J. (2016) Heterogeneous nucleation on concave rough surfaces: thermodynamic analysis and implications for nucleation design. J. Phys. Chem. C 120(19):10368–10380.10.1021/acs.jpcc.6b01693 ↗
22. Yao, Z.T., Ji, X.S., Sarker, P.K., Tang, J.H., Ge, L.Q., Xia, M.S. (2015) A comprehensive review on the applications of coal fly ash. Earth-Sci. Rev. 141(141):105–121.10.1016/j.earscirev.2014.11.016 ↗
23. You, S.H., Zheng, H.A. (2014) Advances in the preparation of glass-ceramics from fly ash. Silic. Bull. 33(11):2902–2907.
24. Zacco, A., Borgese, L., Gianoncelli, A., Struis, R.P.W.J., Depero, L.E., Bontempi, E. (2014) Review of fly ash inertisation treatments and recycling. Environ. Chem. Lett. 12(1):153–175.10.1007/s10311-014-0454-6 ↗
25. Zhang, M., Song, S., Wang, J., Sun, J., Li, J.Z., Ni, Y. (2013) Using a novel fly ash based calcium silicate as a potential paper filler. Bioresources 8(2):2768–2779.10.15376/biores.8.2.2768-2779 ↗
26. Zhang, Y.X. (2013) Application of fly ash in PVC wood-plastic skinned foam building template. Rubber Plast. Technol. Equip. 39(5):19–22.