China’s polyacrylamide industry started in the 1960s. It was first used to purify salt water for electrolysis. At that time, only few industries used polyacrylamide and there were limited polyacrylamide types so there was almost no need for model selection.
Amphoteric polyacrylamide contains cationic and anionic groups in its molecule. It possesses the characteristics of common cationic flocculants and exhibits more excellent properties. Such flocculants can be used in a wide range of PH values, with higher water filtration capacity, lower cake moisture content, and can also be used for strong acid leaching of ores or recovering valuable metals from acidic catalysts containing metals. Amphoteric polyacrylamide is by no means a mixture of anionic and cationic polyacrylamide.
Because zwitterionic polyacrylamide contains cationic groups and anionic groups in the molecule, it has the characteristics of general cationic flocculants and exhibits more excellent performance. This type of flocculant can be used in a wide range of PH values, with higher water filtration and lower cake water content, and can also be used for strong acid leaching of ores or recovery of valuable metals from metal-containing acid catalysts.
Polyacrylamide is one of the most widely used papermaking aids in the papermaking industry, and has now been called the standard "papermaking aid". It is a water-soluble polymer compound. Because of