TECHNOLOGY FOR PROCESSING LOW-SULFIDE GOLD-QUARTZ ORE

Link for citation: Fedotov P.K., Senchenko A.E., K.V., Burdonov Vlasova V.V. Technology processing low-sulfide gold-quartz ore. Bulletin of the Tomsk Polytechnic University. Geo Аssets Engineering, 2022, vol. 333, no. 6, рр.178-189. In Rus.
 The relevance research is caused by necessity to acquire new knowledge about enrichment gold-bearing ores and need develop resource base Russian Federation, namely involve subsoil use objects in economic circulation. purpose study ore using an integrated technology mineral raw materials. Object: gold materials with average grade 11,88 g/t. silver content negligible – 2,43 main minerals sample are pyrite pyrrhotite. these ore, according mineralogical X-ray diffraction analysis, was 6 % (in total). rock-forming original are: quartz 60,1 %; quartz-chlorite-mica aggregates 3,8 carbonates 7,1 %. Methods. methodology based on theoretical foundations processing. material composition products, carried out chemical, assay, thermal, spectrometric methods, as well atomic emission spectrometry other methods. washability methods gravity flotation enrichment, namely: GRG test, stage test Institute TOMS (Russia) (determination optimal size grinding number stages), modeling extraction cycle, determination degree grinding, choice reagents, kinetics process implementation a complex technological studies. Results. It found that recovery when performing 72,75 total concentrate yield 1,34 Au 664,78 At same time, tailings 3,29 A showed only technology, it advisable two-stage scheme. first cycle 60–70 second final discharge classification 90 –0,071 mm. Centrifugal separation, free operation works efficiently. 2426 g/t obtained output 0,31 63,74 crushed mm at KC-CVD concentrator (modeling) made possible extract into (KC-MD+KC-CVD) 87,25 22,63 1,97 results concentration indicate feasibility combined gravity-flotation closed experiment initial beneficiation scheme natural pH pulp (without adding acid), following products were obtained: 64,06 (after II cleaning) 122 2,90 33,01 94,07 3,21 345,87 g/t, 0,72