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3Journal of Advances in A _ METALLURGY AND
Engineering Technology Vol.1 (9) 2023 m КГ/ ™ MINERAL PROCESSING
Vokhidov B.R., Babaev M.Sh., Sirojov T.T., Mamaraimov G.F., Yandashev A.A.
RESEARCH OF COPPER ORES APART FROM BALAS AS NEW TYPES OF RAW MATERIALS OF COPPER AND
RARE METALS
B.R.Vokhidov - Doctor of Technical Sciences (DSc), Head of the "Metallurgical" Department of the Navoi State Mining and Technological University, M.Sh.Babaev - Doctoral student The Navoi branch of the Academy of Sciences of the Republic of Uzbekistan T.T.Sirojov - Senior Lecturer of the "Metallurgical" Department of the Navoi State Mining and Technological University, G.F.Mamaraimov - Senior Lecturer of the "Metallurgical" Department of the Navoi State Mining and Technological University, A.A. Yandashev -Master of the "Metallurgical" Department of the Navoi State Mining and Technological University.
Annotation: Today, in the conditions of Uzbekistan, there is no complex technology for the processing of industrial waste and the extraction of rare and precious metals at the JSC "AGMK" with small amounts of rare metals. The presence of man-made waste containing platinum, palladium and rhodium in AGMK JSC indicates that the plant can manage the production industry, processing waste for several years without processing ore. A deep hydrometallurgical complex technology for the extraction of platinum and palladium with multistage refining processes has been developed.
Keywords: industrial waste, palladium, roasting, recovery, selective precipitation, aqua leaching, calcination, integrated technologies.
Аннотация: Сегодня в условиях Узбекистана отсутствует комплексная технология переработки техногенных отходов и извлечения редких и драгоценных металлов на АО «АГМК» с небольшими количествами редких металлов. Наличие в АО «АГМК» техногенных отходов, содержащих платину, палладий и родий, указывает на то, что завод может управлять производственной отраслью, перерабатывая отходов в течение нескольких лет без переработки руды. Разработана глубокая гидрометаллургическая комплексная технология извлечения платины и палладия с многоступенчатыми процессами рафинирование.
Ключевые слова: техногенные отходы, палладий, обжиг, восстановление, селективное осаждение, царско-водочное выщелачивание, прокалка, комплексные технологии.
Introduction
Within the cluster of raw materials for the production of copper in the copper industry, the expansion of today's Uzbekistan is considered to be one of the pressing issues of the mining and metallurgical sector. Navoi and Almalyk mining and metallurgical complexes consider to produce copper, zinc, lead, selenium, tellurium, gold, silver and other precious metals by separating them from waste materials and for the sake of developing technologies of metallurgical industry both complexes highlight one of the important functions of enhancing and research processes. The expansion of available raw materials base complex will provide a basis for the development of copper
Journal of Advances in A JQ) METALLURGY AND
Engineering Technology Vol.1 (9) 2023 m V J MINERAL PROCESSING
production in the same place and research of out-of-balance sulfite and oxidized copper ores of the Kalmokkir mine and Yoshlik-I mine will be the basis for the production of new technologies for the complex extraction of non-ferrous and precious metals contained in them. [1, 432-b.].
Research objects and methods
As the object of research "Almalyk mining and metallurgical combine" JSC Qolmaqqir sulfide oxidation and in addition to the balance of deposits of copper ore are taken. Oxidation of sulfite mining of chemical and material composition and the remains Kalmokkir in order to study the nature and high energy efficient, using x-rays and no rarenative to, such as to determine the amount of mass metals-spektrometrik using the method for chemical analysis of samples were taken and what the NEX CGI RIGA branded fluorescentanalysis was held at [2]. Kalmokkir from mine a-7 and a-8 million tons of ore in addition to the total amount of the landfill balance 0,424 which consists of 74.5 g/t gold and 31,6 with tons of concentrations 1,77 g/t greatly tons 132,2 available in silver-stained were determined [3]. In addition to the oxidation of ore deposits from the balance of Kalmokkir are landfills №39, 9, 10, 8, a-4. No39, 9, 10, 8, a-4, out of the total amount of ore oxidation balance 63,8 million.make it up to them 31.1 t gold, silver t 144,5 availablewill determine stained. According to chemical analysis, in addition to the balance of copper sulfideli ore insideing follows the average composition, %: Zion2 - equals to 54,3; Al2O3 -16,5; MgO - 2,49; SO3 - 1,49; K2O - 5,72; neither the2O - 2.52; CaO - 7,26; Fe2O3 - 7,96; CuO - 0,119; ZnO - 0,0214; Ga2O3 - 0,0042; As2O3 - 0,0057; From2 - 0,0037; Fix2O -0,00295; Sr - 0,0566; Au - 0,0019; Ag - 0,0017; Pb - 0,0018; Niobiy - 0,0022; MnO -0,312; TiO2 - 0,571; Ac - 0,0037; Cl My - 0,028; Sb2O3 - 0,0017; U3O8 - 0,0014; Moon3 -0,003; Co2O3 - 0,0132; BaO - 0,0761; C2O3 - 0,0042; V2O5 - 0,0352 [4]. 40 the study sample, they have been based on precious metals and determine the average amount given the price of the lens specific for each metal (table 1).
Table 1
Kalmokkir the average amount of waste that have been in metal mining
the total amount the total amount the
№ Metals of metals in ore of metals from total
Okside, t sulfide ore, t amount, t
1 Au (gold) to 31.1 31,6 62,7
2 Ag (silver) 144,5 132,2 276,7
3 Se (selenium) 74 86,42 160,42
4 Pt (platinum) 143,55 167,625 311,175
5 Pd (Palladium) 194,59 227,225 421,815
6 Re (Rhenium) 16,97 19,817 36,787
7 Os (Osmium) 4,568 5,3342 9,9022
8 In (Indium) 0,1276 0,149 0,2766
9 Ru (Ruthenium) 1,0846 1,2665 2,3511
7 7
Journal of Advances in A JQ) METALLURGY AND
Engineering Technology Vol.1 (9) 2023 m V J MINERAL PROCESSING
Improved as a result of studying is the chemical composition of waste processing methods to separate precious metals from their content without using the opportunity created. In addition, examples of EMF spectroscopy a8 energy (ED) were studied with the composition of the material below them is described in the graph (1-picture 2.).
¿ 6 <í Ma p_00 l_wtiolespeclrum
1- C *
M Wl >a4 * 1 i] y o. K-K Ftf Ca-K h-K 1 i J
l O u ih 1 /1 " * Jj¿L ó a Ll. / 1í ü ¿53 J 1 1
1 1 1 1 ' 1 1 1 , , ,
0 5 10 15 20
Energy fkeV]
Picture 1. The fundamental analysis of entire surface of the sample A8.
In order to identify the possible components of the studied objects, a general chemical analysis of the samples was carried out over the entire surface of each sample. The copper particle sizes were determined from the images, which showed the copper to be 10 microns and mostly bound with sulfides. [5, 6]. The studied surface is mainly characterized by copper, in addition, the peak of iron minerals is equated with sulfur, which in turn indicates the presence of iron sulfide minerals, and the intensity of the high peak is found to contain 4.0*105 quartz. (see picture1).
Research justification
As a result of the studies, the 005 spectrum shows a double surface of the sample, which is 0.15% of the copper content of the studied sample, with oxygen bound (see Figure 2 and Table 2) as inclusions iron sulphide, quartz, alumina and calcite minerals were identified.
Table 2
Elemental composition of the total sample area A8
Element Line Mass, % Atomic, %
Spc_005 Line Mass% Atomic%
C K 9.37 ± 0.19 20.52 ±0.42
O K 17.53 ± 0.18 28.81 ± 0.30
Mg K 0.68 ± 0.03 0.73 ±0.04
Al K 1.73 ± 0.04 1.69 ± 0.04
C K 3.69 ± 0.06 3.45 ±0.06
S K 32.27 ± 0.16 30.57 ± 0.13
K K 0.46 ± 0.03 0.31 ± 0.02
Ca K 0.72 ± 0.03 0.47 ± 0.02
Fe K 28.41 ± 0.22 13.38 ± 0.10
Cu K 0.15 ± 0.04 0.06 ± 0.02
Total 100.00 100.00
ratio spc_005 fitting 0.0149
Analysis of samples from site 10 shows an average copper content of 0.15%, and an average copper mineral size of 100 microns (see Figure 2).
Energy [keV]
Picture 2. Results of the analysis of the 10 division sample of the off-balance
oxide ore of the Kalmakkir mine.
From Figure 4, it can be seen that copper also occurs in oxidized ores, with the peak of Cu equal to the peak of O2. The mineralogical composition and the results of experiments show that the out-of-balance ores of the A8 site are sulphide, but the results of flotation beneficiation and beneficiation analysis showed a low concentration of copper and precious metals (gold, silver, platinum and palladium), and such flotation beneficiation was carried out by OKMK JSC It was found that it does not meet the requirements of MEZ [7].
The research results and their analysis
The results of gravity beneficiation experiments for ore samples from A4 and 9 overturns gave good results for all rare metals, especially gold, silver, platinum and palladium except for copper. For these reasons, the ore from the A7 overturning was
subsequently tested for gravity beneficiation (according to the flow chart in Figure 10), and the concentrate was additionally tested for selenium and tellurium.
Picture 3. Proposed technological scheme of beneficiation of out-of-balance
oxide ores.
The resulting residues of gravity beneficiation of oxidized ores (overturnings A4, A7 and 9) were collected and selectively smelted in heaps together with sulphide out-of- 8 balance ores to obtain copper. The results of preliminary experiments on gravity
Journal of Advances in A JQ) METALLURGY AND
Engineering Technology Vol.1 (9) 2023 m V J MINERAL PROCESSING
enrichment of all 3 samples are presented in Table 3. The results of the gravity beneficiation experiments for the ore samples of waste A4 and 9 gave good values for all precious metals, particularly gold, silver, platinum and palladium, but low for copper.
Table 3
Results of beneficiation of out-of-balance oxide ores by gravity method
Weight g Output , % Contents, % Extracting, %
Name Au g/t Ag g/t Pt g/t Pd g/t Cu S s Au Ag Pt Pd Cu Ss
Results of gravity concentration of sample A4
Concentrât 180,00 1,80 46,72 52,91 96, 170 1,4 1, 72, 13, 83, 81, 11,78 2,82
e 12 ,13 6 46 18 72 27 62
Tailings 9820,00 98,20 0,33 6,10 by 0.4 1 0,8 2 0,2 0 0, 92 27, 82 86, 28 16, 73 18,3 8 88,22 97,1 8
Ore 10000,00 100,00 1,16 6,94 2.5 0 4,4 0 0,2 2 0, 93 100 ,00 100 ,00 100 ,0 100, 0 100,00 100, 00
Results of gravity concentration of sample A7
Concentrât 192,00 1,92 6,32 57,73 19, 22 27, 17, 0, 27, 21, 31, 33,2 25,88 6,27
e an d 14 48 58 88 20 98 4
Tailings 9808,00 98,08 0,32 4,20 1,0 1 1,2 0 0,9 8 0, 17 72, 12 78, 80 68, 02 66,7 6 74,12 93,7 3
Ore 10000,00 100,00 0,44 5,23 1,4 6 1,8 0 1,3 0 0, 18 100 ,00 100 ,00 100 ,0 100, 0 100,00 100, 00
Results of gravity concentration of sample 9
Concentrât e 185,00 1,85 28,70 54,12 80, 70 102 ,85 2,2 0 0, 81 32, 97 41, 18 66, 37 An d 70,3 8 17,17 3,23
Tailings 9815,00 98,15 1,10 1,08 0,7 0 0,8 0 0,2 0 0, 46 67, 03 58, 82 33, 63 29,6 2 82,83 96,7 7
Ore 10000,00 100,00 1,61 1,84 2,1 0 2,7 0 0,2 4 0, 47 100 ,00 100 ,00 100 .0 100. 0 100,00 100, 00
Knelson: where l/min, g=90, grinding-60 min, mm size-0,074-80%.
For these reasons, it is necessary to further investigate the gravity processability of the A7 ore and to further investigate the presence of selenium and tellurium in the concentrate. The resulting residues of the gravity beneficiation of oxidized ores (dumps A4, A7 and 9) are directed to copper leaching together with sulphide out-of-balance ores. The results of preliminary experiments on gravity enrichment of all 3 samples are presented in Table 3.
Conclusions
After the gravity enrichment of copper ores out of oxide balance (sections A4, A7 and 9), a gravity concentrate rich in precious metals is formed according to the following composition: on average 28-46 g/t for gold, for silver. 52-58 g/t, 80-96 g/t for platinum, 100170 g/t for palladium. The idea of processing the concentrates obtained after beneficiation of out-of-balance oxidized ores consists in calcining the concentrate at 350-400 °C and washing it from impurities through a sulfuric acid solution and a two-stage selective washing of the residual cake, in which silver and palladium are removed with a nitric acid solution, platinum and gold are selectively dissolved with arginine solution, and the optimal parameters for the selective precipitation of silver, palladium, platinum and gold were qq developed using appropriate precipitation reagents developed by the author. As a result of
the developed technology, pure precious metals with a mass percentage of 99.9% purity are obtained with a separation rate of more than 90%.
Reference:
[1]. Masleniskiy N. I., Chugaev l. v., Borbat V.F., m. v. nikitin, s. l. Strijko Metallurgy blagorodnix metallov. [Metallurg not of precious metal]. Moscow, Metallurgy Pub., In 1987, 411 410 I, i 414,415 416 p.
[2]. Vokhidov B.R., Khasanov A.S. Researching the technology of extracting platinum and palladium from man-made wastes of the copper industry // Scientific and technical journal of the Ministry of Innovative Development "Science and Innovative Development" Tashkent 2021. December 6. 2021 p.56-68.
[3]. B..R. Vokhidov New horizons processing of technogenic waste of the copper industry // (№23 The American Journal of Applied sciences) // Volume 04 issue 05 Pages: 42-51. SJIF Impact factor (2021: 5. 634) (2022: 6. 176).
[4]. Khursanov A.Kh., Khasanov A.S., Abdukadirov A.A., Vokhidov B.R. Technology platinoidov [Platinoid technology]. Tashkent, "Muharrir" Publ., 2021. 29, 33,88,216,217 p.
[5]. Khursanov A.H., Khasanov A.S., Abdukadirov A.A., Usmankulov O.N., Vokhidov B.R., Askarov B.M., Umaraliev I.S., Abduvaitov D.S. (vsego 8 chel.). Sposob izvlecheniya affinirovannogo palladievogo porushka ot otra-botannyx electrolytov. [Method for recovering refined palladium powder from spent electrolytes]. Patent Application No. IAP 20190183. Priority on 04/30/2019.
[6]. Vokhidov B.R., Khasanov A.S. Razrabotka sposoba achistka palladievogo powder horse primesey. [Development of a method for purification of palladium powder from impurities]. Mejdunarodnaya nauchno-technicheskaya conference. "Science and Innovation", Tashkent, November 1, 2019. p. 261-263.
[7]. Vokhidov B.R. Razrabotka tekhnologii polucheniya platinovikh metallov iz tekhnogennix otkhodov [Development of technology for obtaining platinum metals from industrial waste]. Nauchno-methodicheskiy zurnal Evraziyskiy soyuz uchenix (YeSU): Moscow, 2020. June #6(75). p. 38-46.
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