METHOD OF SEDIMENTATION OF THE ARGILLOUS SLIMES FROM THE SALTING SOLUTIONS CONTAINING THE FINELY DISPERSED ARGILLOUS PARTICLES Russian patent published in 2008 - IPC C02F11/14 C02F1/56 B01D21/01 C02F103/10 

FIELD: chemical industry; mining industry; coal industry; other industries; methods used for concentration of the coal or ores.

SUBSTANCE: the invention is pertaining to the field of the processes of separation of the suspensions with segregation of the solid phase, preferably with usage of the liquid phase as the target product, and may be used in mining and coal industries for concentration of the coal or ores. For realization of the method the argillous slimes from the salting solutions containing the finely dispersed argillous particles are treated with the flocculants. At that the treated solution is sequentially introduced with the cationic flocculant containing the amide monomer with the quantity of the ionogenic groups of no less than 5 % from the total number of the amide groups, then use the anionic flocculant containing the amide monomer with the number of the ionogenic groups of 5-15 % from total of the amide groups. The ratio of the indicated flocculants compounds from 2:1 up to 1:5.5. In the capacity of the cationic flocculant it is preferable to use the copolymer of acrylamide with methylchloride of sodium dimethylaminepropylacrylate. In the capacity of the anionic flocculant it is preferable to use the copolymer of acrylamide with sodium acrylate. The method ensures improvement of the filtration characteristics of the sediments in the processes of purification of the potable and waste waters from the dispersed impurities. Besides the increase the speed of flocculation of the argillous particles is conducted at the simultaneous increase of the density of the slimes and the decreased consumption of the flocculants.

EFFECT: the invention ensures the improved filtration characteristics of the sediments during purification of the potable and waste waters from the dispersed impurities at the simultaneous increase of the density of the slimes and the decreased consumption of the flocculants.

8 cl, 1 tbl