Application of Magnafloc 10 Magnafloc 1011 in mineral processing of anionic polyacrylamide
Polyacrylamide is a linear water-soluble polymer with high molecular weight and low ionic degree. It has good flocculation and can reduce friction resistance between liquids. According to ionic characteristics, it can be divided into four types: non-ionic, anion, cation and amphoteric type. Because of its special group, it is endowed with the role of flocculation, dispersion, thickening, bonding, film formation, gel, stable colloid.
Because of the special properties of polyacrylamide, it has been widely used in many fields. In coal washing and dressing, we usually use anionic polyacrylamide, which can promote the rapid settlement of effective solid substances, destroy the stable double charge structure of coal slime water, condense and precipitate suspended coal slime particles, and clarify and recycle coal slime water.
In the selection of polyacrylamide application, coal washing plant slime settlement, there are also many applications to non-ionic polyacrylamide or cationic polyacrylamide, may be different according to the geological reasons of slime.
Due to the complex composition of coal slime, the different charge and surface adsorption capacity of each mineral, it is difficult to treat the peat water, and condensate agent is often needed in the front section, such as polyaluminum chloride and polyferric sulfate.
In order to optimize the efficient treatment of slime wastewater, the hardness of slime water, the concentration of slime water and the size of particle size should be considered. Choose the appropriate flocculant products, in the process of using polyacrylamide solution should pay attention to polyacrylamide solution in peat water fully dispersed, on the one hand can not be stirred too fast, so as not to damage the flocs; On the other hand, we should pay attention to the mixing uniformity of polyacrylamide solution and coal slime water, so that the surface of coal slime water is more fully in contact with polyacrylamide solution, so that the charge matching degree is better, which is conducive to flocculation separation.
In addition to coal dressing, there are iron, manganese, copper, gold, zinc, etc., these mine wastewater is generally acidic, the treatment of this kind of wastewater is generally neutralization method, adjust its PH value, the most commonly used limestone and lime to do adjustment agent.
For example, after neutralization of iron ore wastewater, the main components of wastewater sludge are Fe(oH)3 and colloid, Ca(oH) 2 calcium hydroxide and colloid, Fe(oH) 2 ferrous hydroxide particles, and other ions. Using cationic polyacrylamide (CPAM) to treat iron sludge dewatering can achieve good results.
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910_small.jpg "flocculant polyacrylamide for coal mineral processing")
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718_small.jpg "Application of anionic polyacrylamide (AN923) in mineral processing")