Extraction of gold from heap cyanic solutions of polymetallic ores by polycondensational anionites

Abstract

The object of the research are polycondensational anionites on the basis of Diglicydil Resorcin Ether (DGRE), Allyl-Bromide (АB) and Poly-2-Methyl-5-Vinylpyridine (PMVP) – Ional A-7; Allyl-Glycide Ether (AGE) with PMVP – Ional A-13, model and technological solutions having different microbiological concentration of cyanide complexes of gold and extrinsic metals. The goal of the work lies in setting the main physico-chemical rules of gold and competitive extrinsic metals behavior in ion exchange system, and in developing an effective method to extract gold from multicomponent cyanic solutions by means of using less expensive ionites. Standardized analysis, potentiometer titration, element, chemical, infrared spectroscopic, spectral, and roentgen-phase analysis methods were used in the present research. Scientific and applied researches defined and scientifically justified sorption characteristics of kazakhstani resins Ional A-7 and Ional A-13, possessing the same relative turgescence in water as anionite AM-2B. Ional A-7 and Ional A-13 as anionite AM-2B are related to anionites of mixed basicity, containing relatively same quantity of Quaternary Aluminium Base (QAB). Resin AM-2B is exceeded by Anionite Ional A-7 regarding its capacity and kinetic characteristics, and by Anionite Ional А-13 on selectivity according to iones of gold cyanic complexes. It is justified by higher concentration of QAB in the first ionite and, admittedly, higher density of structural links lacing of the second ionite.