STALE TAILINGS OF COPPER-CRUSTED ORES FLOTATION WITH THE POSSIBILITY OF GOLD AND SILVER SELECTIVE EXTRACTION: RESOURCE POTENTIAL ANALYSIS

The article analyzes the possibility and efficiency of processing stale tailings of flotation plants of the copper pyrite complex. The resource potential, material composition and technological capabilities of processing a number of technogenic objects are considered. The interrelation and influence of mineralogical and technological factors on the choice of tailings processing technology are analyzed. The results of chemical, mineral and phase analysis of stale flotation tailings of the studied pyrite ores are presented. According to the complex studies’ results, it is established that the stale flotation tailings of copper pyrite ores belong to a refractory type of geo-resources due to the high content of pyrite and low, at the level of ppm, gold and silver content, which are present mainly in the “resistant” minerals - chalcogenides, sulphides, their intergrowths. The article presents a factor analysis and conditions for the elemental composition of tailings formation: mineralogical, technological and environmental. The territorial accessibility and technological capability of the investigated technogenic formations are analyzed. In the course of experimental studies, the elemental composition of stale tailings has been revealed - the main components of which are: iron, sulfur, silicon and aluminum. According to the results of X-ray phase analysis, it has been found that the main ore mineral of the tailings is pyrite. At the same time, it is noted that the main share of gold in the stale flotation tailings is presented in the form of sulphides in the form of finely dispersed and isomorphic inclusions. The heterogeneous morphometric and mineral composition of sulphide aggregates, their difficult opening and high dispersion characterize stale tailings as a raw material that is difficult to float. The revealed features of the material composition of stale tails indicate the impossibility of extracting valuable components (gold and silver) from this resource using existing traditional technologies. It has been proved that it is possible to effectively extract precious metals from this category of raw materials only after their deep opening by chemical processing. The relevance of the research lies in the need to process gold-containing man-made waste in order to significantly expand the raw material base of mining enterprises, as well as to improve the ecological situation of the city-forming mining enterprises of the South Urals. The aim of the research is to study the material composition of stale tailings and develop a technology for selective extraction of gold and silver. The object of research is the stale flotation tailings of copper-pyrite enterprises of the Southern Urals. The subject is the mineral composition, the content of useful components of lying tailings and the technology of gold and silver selective extraction from them. Material and research methods. During the experiments, a set of physicochemical and chemical methods of analysis has been used: thermodynamic analysis, synchronous thermal analysis using a combined thermal analyzer of the Netzsch STA 449 F3 Jupiter brand, UV spectroscopy with an automated data processing system), qualitative chemical and assay analyzes

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The Chemical Technology for Producing Precious Metals from Enrichment Rejects of Copper-Pyrite Ores

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.316.625 ◽

2021 ◽

Vol 316 ◽

pp. 625-630

Author(s):

Nadezhda L. Medyanik ◽

Anton P. Ponomarev ◽

Olga V. Yershova

Keyword(s):

Economic Effect ◽

Precious Metals ◽

Payback Period ◽

Chemical Technology ◽

Chemical Extraction ◽

Two Stage ◽

Flotation Tailings ◽

Metallurgical Combine ◽

Copper Pyrite ◽

Pyrite Ores

The chemical technology for recovery precious metals Au and Ag from mature flotation tailings of copper-pyrite ores by two-stage sintering with chlorine-ammonium reagents and leaching of bakes with water is developed. The chemical extraction of gold and silver is carried out, using NH4Cl and NH4NO3 reagents in the ratios of 1:1 at a temperature of 250 °C, and 2:1 at 200 °C. In accordance with the obtained results, a chemical technology of enrichment rejects of copper-pyrite ores processing and a scheme of primary apparatus chain for implementing this technology are proposed. The economic effect of the technology realization is calculated. This effect is 96.3 million rubles with a payback period of 8 years when processing enrichment rejects of copper-pyrite ores in amount of 109.5 thousand tons per year under the conditions of JSC “Uchaly Mining and Metallurgical Combine”.

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Distribution of Gold and Associated Ore-Bearing Elements in Gold-Copper-Pyrite Ores of the Kyzylbulag Deposit (Lesser Caucasus, Azerbaijan)

UNIVERSITY NEWS. NORTH-CAUCASIAN REGION. NATURAL SCIENCES SERIES ◽

10.18522/1026-2237-2020-3-51-59 ◽

2020 ◽

pp. 51-59

Author(s):

M.I. Mansurov ◽

B.H. Galandarov ◽

U.I. Karimli ◽

A.I. Huseynov

Keyword(s):

Cluster Analysis ◽

Elemental Composition ◽

Native Gold ◽

Ore Body ◽

Hydrothermal Stage ◽

Copper Pyrite ◽

Lesser Caucasus ◽

Pyrite Ores ◽

Host Rocks ◽

Ore Deposition

The article presents the results of studies of the distribution of gold and associated ore elements in gold-copper pyrite ores of the Kyzylbulag deposit. It was established that the elemental composition of ores and host rocks of the deposit includes Cu, Pb, Au, Ag, Ni, As, Sb, Bi, and Mo, of which Au, Cu, Ag, and Zn are the more stable. The behavior of elements was also studied for the entire ore body, as a result of which they are divided by cluster analysis at R (5 %) - 0.1 into two groups: 1) Au, Cu and Ag; 2) Pb and Zn. The closest relationship in the first group was found between Au and Cu, Au and Ag, Ag and Cu; and in the second, between Pb and Zn. Acquired results confirm that gold and the copper are the major components of ore in the field expressed generally in the mineral paragenesis of chalcopyrite - native gold shown in the independent hydrothermal stage of ore deposition.

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PREPARATION OF PRECIPITATED CALCIUMCARBONATE USING ADDITIVE AND WITHOUT ADDITIVE

Jurnal Teknologi ◽

10.11113/jt.v77.6004 ◽

2015 ◽

Vol 77 (3) ◽

Cited By ~ 2

Author(s):

Anuar Othman ◽

Nasharuddin Isa ◽

Rohaya Othman

Keyword(s):

Calcium Carbonate ◽

Calcium Hydroxide ◽

Mineral Composition ◽

Hydrated Lime ◽

Raw Material ◽

Precipitated Calcium Carbonate ◽

Uniform Size ◽

The One

Precipitated calcium carbonate (PCC) chemically can be synthesized in the laboratory. In this study, hydrated lime or calcium hydroxide was used as raw material with sucrose as additive to produce PCC. The process was compared with the one without additive. PCC produced was observed based on morphology, mineral composition and size by using Fesem-Edx and LPSA, respectively. PCC products without additive demonstrated fine and more uniform size of calcite PCC as compared to the one with additive. Nevertheless, the process with additive produced more PCC product than without additive.

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Main parameters influencing the plastic behavior of clays used for traditional ceramics production

10.31224/osf.io/ushm4 ◽

2021 ◽

Author(s):

Hicham El Boudour El Idrissi

Keyword(s):

Mineral Composition ◽

Ceramic Industry ◽

Raw Material ◽

Plastic Behavior ◽

Different Types ◽

The Impact ◽

The City ◽

Traditional Ceramics ◽

Clayey Materials ◽

Clay Mineral Composition

This paper investigates the main parameters influencing the plastic behavior of clays used for traditional ceramics production. For this, twenty-six clayey pastes were selected from twelve traditional ceramic plants around the city of Marrakech (Morocco). According to the lithology, six different types of materials are used as raw material in the ceramic industry of this region. Emphasis is placed on the impact of the characteristics of these clayey materials upon the plastic behavior of these clays. The pastes were characterized through their consistency using the Atterberg limits. It has been concluded that the gain size, the mineralogical and the clay mineral composition and content, the effect of diagenesis and the presence of talc-pyrophyllite association play the most important role in the control of the plasticity behavior.

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Effect of composition on physical properties of food powders

International Agrophysics ◽

10.1515/intag-2015-0084 ◽

2016 ◽

Vol 30 (2) ◽

pp. 237-243 ◽

Cited By ~ 8

Author(s):

Karolina Szulc ◽

Andrzej Lenart

Keyword(s):

Particle Size ◽

Physical Properties ◽

Bulk Density ◽

Technological Process ◽

Apparent Density ◽

Significant Influence ◽

Material Composition ◽

Raw Material ◽

Food Powders

Abstract The paper presents an influence of raw material composition and technological process applied on selected physical properties of food powders. Powdered multi-component nutrients were subjected to the process of mixing, agglomeration, coating, and drying. Wetting liquids ie water and a 15% water lactose solution, were used in agglomeration and coating. The analyzed food powders were characterized by differentiated physical properties, including especially: particle size, bulk density, wettability, and dispersibility. The raw material composition of the studied nutrients exerted a statistically significant influence on their physical properties. Agglomeration as well as coating of food powders caused a significant increase in particle size, decreased bulk density, increased apparent density and porosity, and deterioration in flowability in comparison with non-agglomerated nutrients.

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Obtaining Calcium Sulfoaluminate Using Aluminate Waste

Materials Science Forum ◽

10.4028/www.scientific.net/msf.1037.743 ◽

2021 ◽

Vol 1037 ◽

pp. 743-750

Author(s):

Ivan Y. Burlov ◽

Dmitriy A. Zorin ◽

Yury R. Krivoborodov

Keyword(s):

Phase Analysis ◽

Firing Temperature ◽

Weak Dependence ◽

Raw Material ◽

High Quality ◽

X Ray ◽

Calcium Sulfoaluminate ◽

Gypsum Content ◽

Calcium Sulphoaluminate

In this work, studies have been carried out to replace bauxite with aluminate slags. Compounds of raw mixtures without use of fossil aluminate materials with different gypsum content have been developed. Instability of assimilation of anhydrite into calcium sulphoaluminate has been established. X-ray phase analysis has shown a weak dependence of increase in the firing temperature and increase in the yield of the main mineral C3A3·CŜ. Results of the study allow us to conclude that it is possible to obtain high-quality calcium sulphoaluminate (SAC) based on technogenic aluminate raw material.

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The evaluation of possibilities of modern level casting bindings on the technological lignin basis practical appliance

MATEC Web of Conferences ◽

10.1051/matecconf/202031503004 ◽

2020 ◽

Vol 315 ◽

pp. 03004

Author(s):

Yu.A. Svinoroev ◽

V.V. Dyadichev ◽

K.A. Batyshev ◽

K.G. Semenov ◽

A.V. Dyadichev ◽

...

Keyword(s):

Material Processing ◽

Raw Material ◽

Secondary Products ◽

Resource Potential ◽

Modern Level ◽

Resource Deficit

Nowadays the ways of overcoming a problem of resource deficit include rationalization of the existing resource potential. In this respect it is expedient to use the secondary products of vegetable raw material processing due to expansion of lignosulfonate materials application.

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