Pulverized coal fly-ash has been evaluated as wet-end filler in manufacture of specialty products such as decorative laminate-grade base papers. Fine sized fly-ash is available abundantly as solid waste from coal based thermal power plants. Non-magnetic fly ash particles smaller than 35 um were used as wet end filler.
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/study-use-non-magnetic-fraction-pulverized-coal-fly-ash-filler-speciality-paper
[2] http://admin.indiaenvironmentportal.org.in/category/author/s-p-singh-0
[3] http://admin.indiaenvironmentportal.org.in/category/author/s-k-sinha
[4] http://admin.indiaenvironmentportal.org.in/category/author/m-singh
[5] http://admin.indiaenvironmentportal.org.in/category/journal/ippta
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/paper-and-pulp-industry
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/waste-conversion
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/industry
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/fly-ash