THE CHANGE OF SOLUTION CHARACTERISTICS DURING THE VATTING OF MINERAL RAW MATERIALS BY MEANS OF COINCIDENT ELECTROCHEMICAL REACTIONS

During vatting of mineral raw materials by means of coincident electrochemical reactions it is shown that the solution characteristic changes not only by change of the dissolved substances' concentration, but also at change of all physical and chemical conditions of vatting of metal-containing raw materials. In particular, рН of initial and productive solutions changes in dependence on the temperature. For productive solutions this change is not reversible. It is shown that by increasing in concentration of sodium hydroxide the superficial tension decreases. Extent of extraction of copper when concentrate electrovatting – 1 in 6 hours makes at 0,1 M of sodium hydroxide 21,5%, 0,2 M – 30,04 %, 0,5 M – 43,1%, 1,0 M – 46,3%. Influence of temperature on extraction of non-ferrous metals from a concentrate – 1 is investigated. By increasing in temperature to 45 ºC extraction of copper increases from 26,8 % up to 35,7 %.