| Annotation |
The relevance of the fulfilled subject of the research is caused by the fact that during enrichment of silver – polymetallic ores of the Goltsovoye deposit there are technological problems, connected with considerable losses of valuable components with tails of gravitational and floatation enrichment. The work is focused on the improvement of the reagent mode during flotation.
The results of the mineralogical analysis of the 4th ore zone of the Goltsovoye deposit are given. Losses of valuable components with tails of enrichment are caused by: polydisperse shots of useful minerals in the containing rocks; thin shots of silver minerals in sulfides, oxides and silicate rock in the process of their close mutual germination; existence of a large amount of heavy oxidized minerals (firstly of galena and to a lesser degree – sphalerite) and their close association with argentiferous minerals; tendency of ore to slime formation. The influence of floatation reagents (kerosene, copper vitriol, sulphurian acid) on enrichment indicators was studied.
The search experiences on small technological tests are carried out in three stages: the first – activation of lead argentiferous minerals, the second – activation of zinc argentiferous minerals, the third – activation of the oxidized argentiferous minerals of manganese and iron. It is revealed that additional loading of reagents activators (kerosene and sulphurian acid), allows to increase floatation activity of argentiferous minerals as well as to increase extraction of silver to 81 %. Statistical data processing has allowed to establish analytical dependences of valuable components extraction (Ag, Zn, Pb) into a concentrate from output of the concentrate, changing in the range of 2,0…10,8 % depending on the nomenclature of the applied reagents. The results of the conducted researches testify a possibility of decrease in losses of valuable components with enrichment tails by means of improvement of the reagent mode
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