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Anionic Polyacrylamide Flocculation And Filtration
Oct 23, 2017

Anionic polyacrylamide (with sulfonic acid groups on the chain, with negative) and cationic polyacrylamide (with quaternary ammonium cations on the chain, with punctual) due to the different electrical properties of the band, therefore, select the adsorption and bridging A little bit of particles is not the same.

Cationic polyacrylamide through electrostatic interaction, the number of negatively charged colloidal particles or negatively charged particles on the surface of its adsorption, Anionic Polyacrylamide the small particles dispersed into large particles, play a role in flocculation and filtration.

Gold and silver crushed and sieved after the use of grinding machine by adding water, lime further grinding, in the next step in the concentration of thickers, this stage the use of anionic polyacrylamide, to promote the rapid settlement of solid, the substrate through a series of filter tank filter. Anionic polyacrylamide flocculant added to the thickener before filtration.

Lead and zinc in the zinc sulfide sorting process: the mineral is calcined by oxidation to zinc oxide. The oxide was then leached with sulfuric acid. A neutral filtrate with a pH of about 5 and an acidic pH of 2.5 can dissolve all the concentrate in sulfuric acid. Some concentrators add a thermal filtration enrichment process to further improve the recovery rate. The reverse flow settling system is typically used for neutral enrichment of overflow purification. In the lead and zinc filtration process, Anionic Polyacrylamide the use of anionic polyacrylamide flocculant to promote the rapid settlement of minerals and clarification of the filtrate to improve the process of production efficiency and reduce the loss of minerals.

Aluminum ore in the aluminum processing process first crushed the mineral to less than 1mm level. Add concentrated sodium hydroxide and add high temperature and high pressure. Aluminum is dissolved in highly corrosive liquids, and no impurities other than soluble silicon are dissolved. After the above process, the gravel is removed along with the primary concentrate precipitated slurry. And anionic polyacrylamide flocculant was added to the primary concentrate tank. This is a very important process to get a clear overflow. Anionic Polyacrylamide The bottom mud of the concentrate pool, the red mud, will be treated by a reverse flow settling process. In this process the aluminum in the liquid is recovered through a series of washing and settling tanks. At this point the anionic polyacrylamide flocculant is reused to facilitate rapid settling and to achieve the required clarification overflow. Anionic Polyacrylamide The aluminum-rich primary concentrate tank overflow is filtered and cooled (48 hours) after the addition of aluminum hydrate to promote precipitation of aluminum trihydrate. And then filtered and washed to obtain aluminum.

The copper ore from the flotation tank comes out of the slurry or tailings will enter the concentrate tank for further settling. A flocculant is added at this time to facilitate rapid sedimentation and to produce a clear overflow. Clarify the overflow will be used as a recycling water. Anionic Polyacrylamide The remaining concentrated tailings will be centrifuged into a centrifuge for dehydration, where the anionic polyacrylamide flocculant will be added as a centrifugal additive.

The air bubbles (concentrates) filled with copper are mechanically separated from the overflow. And then concentrated and dehydrated. Anionic Polyacrylamide The anionic polyacrylamide flocculant is used to improve the efficiency of sedimentation and filtration. The resulting concentrate or filter cake contains nearly 25% to 35% copper. This will be recovered by high temperature metallurgy.