flocculant anionic nonionic polyacrylamide for coal at argentina

flocculant anionic nonionic polyacrylamide for coal at argentina
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  • What is a polymer flocculant?
  • Among the synthetic polymer flocculants, the most important is water-soluble polyacrylamide (PAM)—a non-ionic, amorphous polymer which can be modified to ionic form in the copolymerization process [ 8, 9, 10 ]. The acrylamide monomer can be used for grafting or crosslinking of other type of polymers.
  • What are some examples of anionic polymer flocculants?
  • Representative anionic polymer flocculants are as follows: (1) partially hydrolyzed polyacrylamides, (2) copolymers of acrylamide and acryl acid soda, (3) copolymers of acrylamide and acrylamide-2-methyl-propan sulfonic soda (AMPS), and (4) poly (sodium acrylate).
  • What are cationic polymer flocculants?
  • Representative cationic polymer flocculants include (1) copolymers of acrylamide and acryloyloxyethyl trimethylammonium chloride, (2) poly (methacryloxyethyl trimethylammonium chloride), and (3) polyamidine. Their molecular weight ranges from several million to less than 20 million.
  • Which cationic polymers are used as flocculants for silica aggregates?
  • An example is work by Zhou and Framks [ 31 ], where three cationic polymers (homopolymer of diallyldimehylammonium chloride and its two copolymers with acrylamide) of different molecular weights (1.1–3.0 × 10 5 g/mol) and charge density (CD) (10%, 40%, and 100%) were used as flocculants for silica aggregates.