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Anionic polyacrylamide in mining, mineral processing and metallurgical applications
Processing of minerals under normal circumstances, the need of high molecular weight products, in order to ensure the settlement speed centrifugal process, good effect, easy to obtain good economy effect.
The company's products cover different ion and different molecular weight, users can choose according to the actual conditions of use, generally can meet the requirements, the company can also according to the user's specific requirements for on-demand production.
1 coal industry
In the coal mined, classified according to the different size, according to the proportion of coal particles and impurities in water medium to realize the separation of coal in different water, floating on top, impurities sink to the bottom, the treated coal classification, so as to obtain a product.
Powdered coal produced in the above process, which needs further processing of coal recovery. Complete the process usually uses flotation, add the flocculant and coagulant aids, improve the separation efficiency of coal and the impurity, coal flotation, tailings deposition. The coal flotation after sedimentation, filtration or centrifugation the recovery of coal, the process using anionic polyacrylamide as flocculating agent, the promotion of solid-liquid separation, and then filtered and centrifuged in the thickener, again using the anionic polyacrylamide flocculant.
2 gold and silver
Crushing sieving after the use of mineral grinding machine with water, lime further ground, settlement in the next step in this stage of thickener, using anionic polyacrylamide, promote the rapid subsidence of solid substrate, filtered through a series of filter tank.
3 lead and zinc
In the separation process of zinc sulfide minerals in: by calcination is oxidized to Zinc Oxide. Next to the oxide leaching with sulfuric acid. In about 5 of PH neutral filtrate and PH acidic filtrate 2.5 can make all concentrate dissolved in sulfuric acid. Some concentrator increases a heat filter concentration process to further improve the recovery rate. Inverse reflux settlement system is usually used for overflow neutral enrichment purification.
In the Pb Zn filtration process, the use of anionic polyacrylamide flocculant, promoting mineral rapid subsidence and filtrate clarifying process, improve production efficiency, reduce the loss of minerals.
4 aluminum ore
In aluminum processing firstly in the process of mineral crushing crushed to less than 1mm. Adding concentrated sodium hydroxide and high temperature and high pressure. Dissolved aluminum in highly corrosive liquid, and in addition to soluble silicon other impurities are dissolved.
Through the above process after the gravel together with after primary concentrated and precipitated pulp together be removed. In the primary thickening tank joined the anionic polyacrylamide flocculant. This is clarified by the overflow of the very important a process. Thickener underflow red mud through a reverse backflow settlement process. In this process in liquid aluminum after a series of washing and sedimentation pool to be recycled. At this time of anionic polyacrylamide was used again to promote the rapid subsidence and can meet the requirements of clear overflow.
Aluminum rich primary thickening tank overflow after filtering, cooling (48 hours), three hydrate filling aluminum hydrate in order to promote the precipitation of aluminum. Then the obtained after filtering and washing the calcination of aluminium.
5 copper mine
Out from the flotation pulp or tailing pool will enter the concentrated pool further settlement. This flocculant is added in order to promote the rapid subsidence and have clarified overflow. To clarify the overflow will be used as the circulating water. The remaining concentrated tailings will enter the centrifuge centrifugal dehydration, this time of anionic polyacrylamide as centrifugal additives will be added.