Please check the following discussions for its possible interest concerning to your query: https://www.researchgate.net/post/How_is_PVA_Binder_added_to_make_a_pellet https://www.researchgate.net/post/Is_there_any_binding_material_for_producing_coal_fly_ash_pellets_in_pelleting_machine https://www.researchgate.net/post/which_binder_can_be_used_for_making_pellets_of_snail_shell_based_CaO_powder_and_what_will_b_ethe_method_of_it