Polyacrylamide flocculant plays an important role in water treatment, and polyacrylamide is needed in many places, so the demand for polyacrylamide is also increasing day by day. With the pace of the times, Henan Yiqun Environmental Protection Technology Co., Ltd. keeps up with the footsteps and pays close attention to the technical status and development of polyacrylamide production in China, so as to prepare for social development and beautify the motherland.

Anionic polyacrylamide applications involve mining, mineral processing, and metallurgy. By using polyacrylamide, it can promote the effective solid matter to settle quickly, or accelerate the concentration of fine objects, improve the solid-liquid separation effect, reduce tailings loss and environmental pollution, and reduce production costs. In general, in the process of mineral processing, products with high molecular weight are needed to ensure fast settling speed, good centrifugal process effect, and easy to obtain better economic effect. Anionic polyacrylamide is an ideal chemical reagent for mining and metallurgical industry.

1, the coal industry coal after mining out, according to the different classification of particle size, according to the proportion of coal particles and impurities in the water medium different separation in the water, coal floating on the top, impurities sink into the water bottom, treated coal classification, so as to get the product.

In the above process a pulverized clean coal is produced which requires further processing for recovery. Usually use the process of flotation to complete, add flocculant and coagulant aid, improve the separation efficiency of coal and impurities, clean coal flotation, tail coal settlement. Flotation out of clean coal through sedimentation, filtration or centrifugal recovery of clean coal, this process using anionic polyacrylamide as a flocculant, to promote solid-liquid separation, and then in the thickener for filtration and centrifugation, again used to anionic polyacrylamide flocculant.

2. The gold and silver crushed and screened minerals are further ground by adding water and lime into a grinder and settling in the next thickener. Anionic polyacrylamide is used at this stage to promote the rapid settling of solids. The substrate is filtered through a series of filter tanks. Anionic polyacrylamide flocculant added to the thickener before filtration.

3, lead and zinc in the separation process of zinc sulfide: the mineral is oxidized to zinc oxide by calcination. The oxide is subsequently leached with sulfuric acid. A neutral filtrate with a pH of about 5 and an acidic filtrate with a pH of 2.5 enables all of the concentrate to be dissolved in the sulfuric acid. Some concentrators add a hot filtration concentration process to further increase recovery. Reverse reflux settling system is usually used for overflow purification of neutral concentration. In the lead-zinc filtration process, anionic polyacrylamide flocculant is used to promote the rapid sedimentation of minerals and the clarification of filtrate, improve the production efficiency of the process and reduce the loss of minerals.

4. In the process of aluminum ore processing, the minerals are first crushed to less than 1mm. Then add concentrated sodium hydroxide and high temperature and high pressure. Aluminum dissolves in highly corrosive liquids, while impurities other than soluble silicon do not dissolve. After the above process, the sand and gravel are removed together with the slurry that has undergone the primary concentration precipitation. The anionic polyacrylamide flocculant was added to the primary concentration pool. This is a very important section of the process to obtain a clarified overflow. The bottom flow of the thickener, the red mud, will be treated by a backflow sedimentation process. In this process the aluminium in the liquid is recovered through a series of wash settling tanks. At this point the anionic polyacrylamide flocculant is re-used to promote rapid settling and to obtain a satisfactory clarification overflow. The aluminum-rich primary concentration pond overflow was filtered and, after cooling (48 hours), aluminum hydrate was added to promote aluminum trihydrate precipitation. After filtering, washing and calcining, aluminum is obtained.

5, copper ore from the flotation tank out of the pulp or tailings will enter the concentration tank for further settlement. A flocculant is added at this point to promote rapid settling and the creation of a clarification overflow. Clarified overflow will be used as recycle water. The remaining concentrated tailings will be driven into the centrifuge for centrifugal dewatering, and the anionic polyacrylamide flocculant will be added as a centrifugal additive.

The bubbles (concentrate) laden with copper ore are mechanically separated from the overflow. It is then concentrated and dehydrated. In this case, the anionic polyacrylamide flocculant is used to improve the efficiency of sedimentation and filtration. The concentrate or filter cake obtained thereafter contains approximately 25% to 35% copper. This will be recovered by pyrometallurgy

In the fields of mining, metallurgy, coal, high-absorbent resin, adhesives, leather retanning agent, etc., polyacrylamide also has a certain consumption, especially in recent years for the production of diapers and sanitary napkins The high-absorbent resin market has developed rapidly, and the demand for polyacrylamide has increased rapidly. It is expected that the demand for polyacrylamide in these areas will increase.