RESEARCHING REGULATIONS OF FIRE SULFIDE ORE AND BREED DURING COMBINED DEPOSIT DEVELOPMENT

2020 ◽  
Vol 2 (1) ◽  
pp. 341-356
Author(s):  
M.V. RYLNIKOVA ◽  
◽  
G.I. AYNBINDER ◽  
N.A. MITISHOVA ◽  
L.A. GADZHIEVA ◽  
...  
Keyword(s):  
Research Methods ◽  
Sulfide Ores ◽  
Oxidation Processes ◽  
Sulfide Ore ◽  
Copper Zinc ◽  
Copper Pyrite

Mineralogical and mineralogical-graphic analyzes of samples of the host and ore-bearing rocks of copper-zinc-pyrite deposits were carried out. The Program and the corresponding research methods offactors and patterns of development of the oxidation processes of sulfide ores and rocks have been developed and tested. The results of chemical-technological studies of sulfur-pyrite, copper-pyrite, copper-zinc ores, sericite-quartz rocks and metamorphosed tuffs are presented.

Research on Bulk Floatation Discarding Tailing of Copper and Zinc Polymetallic Sulfide Ores

2014 ◽  
Vol 881-883 ◽  
pp. 1621-1625
Author(s):  
Hai Yun Xie ◽  
Qun Jie Ye ◽  
Ping Zhou ◽  
Li Kun Gao ◽  
Xiong Tong ◽  
...  
Keyword(s):  
Zinc Sulfide ◽  
Yunnan Province ◽  
Loss Rate ◽  
Influence Factors ◽  
Sulfide Ores ◽  
Butyl Xanthate ◽  
Flotation Reagents ◽  
Sulfide Ore ◽  
Development And Utilization ◽  
Copper Zinc

This paper is aimed at a typical complex polymetallic copper-zinc sulfide ores in Yunnan province, China, and adopted the process of bulk floatation discarding tailing under coarse grinding condition, the influence factors are researched such as grinding fineness, types and dosage of flotation reagents. When the coarse grinding size-74μm 75% and butyl xanthate and ethyl xanthate as combination collector, The amount of flotation discarding tailing is 60% for crude ores, the tailings contain 0.058% Cu, 0.027% Pb and 0.12% Zn, the loss rate of various metals in tailing is 3.21% Cu, 5.49% of Pb and 3.35% of Zn. This research has referenced significance to economical development and utilization of copper-zinc sulfide ore resources.

scholarly journals Gold Allocation Forms in Sulfide Ore and Products of their Processing Enrichment

2020 ◽  
Author(s):  
Alexey Mironovich Amdur ◽  
Sergei Andreevich Fedorov ◽  
Anna Nikolaevna Matushkina
Keyword(s):  
Melting Point ◽  
Size Distribution ◽  
Similar Type ◽  
Sulfide Ores ◽  
Natural Conditions ◽  
Gold Particles ◽  
Dispersed Particles ◽  
Sulfide Ore ◽  
Copper Pyrite ◽  
Metallic Impurities

Gold in sulfide ores and technogenic formations after their processing is concentrated in the form of micro-dispersed particles. This article presents a study on the composition of the ultrafine gold particles, their size distribution, and some predicted gold properties. The studies were carried out using copper pyrite ore as an example. It was found that the content of metallic impurities in Au particles, which may appear during their formation under natural conditions, increases with a decrease in their size. The presence of copper in gold particles significantly lowers the melting point of the alloy. The data obtained are used to develop a technology for utilizing gold from technogenic formations of a similar type. Keywords: gold particles, copper, metallic impurities, alloy, radius of particle

Role of geochemical barriers in forming sulfide ores in various geological environments

2021 ◽  
pp. 63-73
Author(s):  
IRINA GABLINA
Keyword(s):  
Sulfide Ores ◽  
Atlantic Region ◽  
Geochemical Barriers ◽  
Sulfide Ore ◽  
Cupriferous Sandstone ◽  
Central Atlantic ◽  
Ore Types ◽  
Long Term Studies

Based on long-term studies of cupriferous sandstone and shale deposits, as well as deepsea sulfide ores, various types of geochemical barriers where sulfides form are shown. Cupriferous sandstones and shales form as metals precipitate from redbed reservoir waters on H2S geochemical barrier. Syngenetic and epigenetic barrier types are identified. Oceanic sulfide ores from the Central Atlantic region were studied; as a result, a new hydrothermal-metasomatic sediment-hosted mineralization type was found, along with previously known sulfide ore types (massive ores on the seafloor and stockwork ores in substrate rocks). Geochemical seafloor sulfide formation environments and those in biogenic carbonate bottom sediments are examined.

Bio-Heap Leaching of Primary Copper Sulfide Ore by JOGMEC

2017 ◽  
Vol 262 ◽  
pp. 99-102
Author(s):  
Tatsuya Shinkawa ◽  
Tadashi Chida ◽  
So Furukawa ◽  
Taro Kamiya
Keyword(s):  
Copper Sulfide ◽  
Heap Leaching ◽  
Sulfide Ores ◽  
High Iron Content ◽  
Iron Oxidizing Bacteria ◽  
Acid Consumption ◽  
Sulfide Ore ◽  
Leaching Solution ◽  
Sulfur Oxidizing ◽  
Copper Sulfide Ore

JOGMEC has been carrying out the study on primary copper sulfide ores leaching for recovering copper economically and efficiently by heap leaching. In our study, we have been using the primary copper sulfide ore produced in an IOCG deposit. The ore is characterized by high iron content and high acid consumption in leaching. For the optimization of the leaching, the conditions such as ore size, agglomeration, pH and irrigation rate of leaching solution were examined with column leach tests. The best result was over 80 % extraction of copper in 150 days with leaching solution of 1 M sulfuric acid and temperature of 45 °C. In this experiment, the fines of the ore sample were removed before putting it into the column to keep the permeability of the ore bed. In these column leach tests, the Fe2+/total-Fe ratio of PLS decreased gradually by the activity of naturally grown iron-oxidizing bacteria. The bacteria in PLS, which have the ability of iron-oxidizing and sulfur-oxidizing, were identified by next-generation sequencing as Acidithiobacillus caldus and Sulfobacillus thermosulfidooxidans. We also carried out bench-scale tests with about 200 tons of the primary copper sulfide ores. Iron-oxidizing and sulfur-oxidizing bacteria were identified in the leaching solution as same with column leach tests. It is considered that the bacteria worked in the leaching solution and on the surface of the ores.

scholarly journals Removal of Flotation Collector O-Isopropyl-N-ethylthionocarbamate from Wastewater

Molecules ◽  
2021 ◽  
Vol 26 (21) ◽  
pp. 6676
Author(s):  
Zhe Wang ◽  
Jun Yao ◽  
Mojca Bavcon Kralj ◽  
Darko Dolenc ◽  
Polonca Trebše
Keyword(s):  
Hydrogen Peroxide ◽  
Organic Compound ◽  
Photocatalytic Oxidation ◽  
Solar Irradiation ◽  
Sulfide Ores ◽  
Reaction Intermediates ◽  
Oxidation Processes ◽  
Iron Salts ◽  
Artificial Uv ◽  
Flotation Collector

Flotation collector O-isopropyl N-ethylthionocarbamate (IPETC) is widely used for separation of sulfide ores. Its removal from water by several oxidation processes was studied. Photocatalytic oxidation with air in the presence of iron salts, utilizing solar irradiation or artificial UV-A light is very efficient. Oxidation leads through the formation of O-isopropyl N-ethylcarbamate and several other reaction intermediates to total decomposition of organic compound in the final stage in 1 day. Similar results were obtained with a Fenton type oxidation with hydrogen peroxide and iron salts. Treatment with sodium hypochlorite yields mainly O-isopropyl N-ethylcarbamate. The formation of this compound in wastewaters can be of concern, since simple alkyl carbamates are cancer suspect agents.

Separation Test of Copper-Zinc-Sulfur Mixed Concentrate in Kazakhstan

2013 ◽  
Vol 683 ◽  
pp. 565-568
Author(s):  
Wen Hao Pang ◽  
Quan Jun Liu ◽  
Peng Ding
Keyword(s):  
Copper Sulfate ◽  
Zinc Sulfate ◽  
Sodium Sulfite ◽  
Copper Recovery ◽  
Sulfide Ores ◽  
Sulfur Recovery ◽  
The Poor ◽  
Copper Zinc ◽  
Separation Test ◽  
Zinc Concentrate

The mixed concentrate which contains 9.97% Cu, 9.25% Zn and 38.62% S is selected from polymetallic sulfide ores in Kazakhstan. The difficulty of study is the effective separation of copper and zinc. We used the process of grinding the mixed concentrate, and then carried out separation flotation of copper, zinc and sulfur according to the properties of the mixed concentrate. Considering the poor effect of single depressant, we used the combination of zinc sulfate and sodium sulfite as the depressants for separating copper. The collector of copper floatation is 432-xanthate and the activator of zinc floatation is copper sulfate. As a result, we obtained satisfying selecting targets through closed-circuit test: The grade of copper is 21.91% and zinc is 6.95% in the copper concentrate. The copper recovery is 87.64%. The grade of zinc is 40.42% and recovery is 65.80% in zinc concentrate. The sulfur recovery is 46.39% in sulfur concentrate.

scholarly journals Influence of copper-zinc sulfide ores elements on bone tissue remodeling and regulative factors

2015 ◽  
Vol 96 (5) ◽  
pp. 783-787 ◽  
Author(s):  
E R Farshatova ◽  
T I Ganeev ◽  
I A Men’shikova ◽  
L V Sarmeneeva ◽  
N V Nurgaleev ◽  
...  
Keyword(s):  
Parathyroid Hormone ◽  
Bone Remodeling ◽  
Zinc Sulfide ◽  
Nuclear Factor Kappa B ◽  
Type I ◽  
Nuclear Factor ◽  
Nuclear Factor Kappa ◽  
Receptor Activator ◽  
Sulfide Ore ◽  
Copper Zinc

Aim. Characterize the intensity of bone remodeling, balance of hormones and local cytokines regulating bone remodeling and bone metabolism, at chronic intake of copper-zinc sulfide ores elements. Methods. A total of 101 miner, producing copper-zinc sulfide ore by underground mining, and 30 employees of ground services of OAO «Uchaly Mining and Processing Plant», were examined. Experimental studies were performed on 60 white adult male rats, distributed to control and experimental groups. The experimental animals of the study group got copper-zinc sulfide ore powder in a 2% starch solution daily for 3 months as a suspension at the dose of 60 mg per 100 g of body weight. The serum levels of testosterone, parathyroid hormone, total thyroxine and triiodothyronine, cortisol, 25-hydroxyvitamin D, soluble Receptor activator of nuclear factor kappa-B ligand, osteoprotegerin, sclerostin and C-terminal telopeptide of collagen type I, as well as bone alkaline phosphatase activity were determined. Results. Miners who were diagnosed with decreased bone density had increased level of C-terminal telopeptide of collagen type I, with bone alkaline phosphatase activity similar to the control group. In miners with physiological level of bone density, there was no statistically significant decrease in blood testosterone level, in the groups with low and very low bone mineral density there was a statistically significant decrease in testosterone level and increased level of parathyroid hormone. Experimental animals exposed to sulfide ore had serum levels of testosterone, 25-hydroxyvitamin D, thyroxine and triiodothyronine decreased, and increased level of parathyroid hormone and cortisol. Together with that, blood concentration of sclerostin was increased, level of osteoprotegerin - decreased, and soluble Receptor activator of nuclear factor kappa-B ligand was not changed. Conclusion. Long-term intake of copper-zinc sulfide ore leads to an imbalance of bone remodeling with a predominance of resorption. It is associated with the reduction of testosterone, calcidiol and thyroid hormones levels providing anabolic and anti-catabolic effect on bone metabolism, and overproduction of parathyroid hormone and cortisol, stimulating osteolysis. Receptor activator of nuclear factor kappa-B ligand / osteoprotegerin ratio and sclerostin level increases.

Compositional peculiarities of the host rocks and ores of the Lazursky ore field, Zmeinogorsk ore region of the Rudny Altai minerogenic zone

2021 ◽  
pp. 36-47
Author(s):  
Tatyana SERAVINA ◽  
Svetlana KUZNETSOVA ◽  
Ludmila FILATOVA
Keyword(s):  
Massive Sulfide ◽  
Ore Deposits ◽  
Sulfide Ores ◽  
Volcanogenic Massive Sulfide ◽  
Sulfide Deposits ◽  
Ore Bodies ◽  
Ore Minerals ◽  
Copper Pyrite ◽  
Host Rocks ◽  
Volcanogenic Massive Sulfide Deposits

The article describes composition of the host rocks and ores of the Lazursky and Maslyansky polymetallic volcanogenic massive sulfide deposits of the Lazursky ore field located within the Zmeinogorsk ore region of the Rudny Altai minerogenic zone. The ore field is composed of various facies of the Devonian (Late Givetian – Frasnian) ore-bearing siliceous-terrigenous basalt-rhyolite formation containing horizons of synvolcanic metasomatites. All rocks of the ore field were subjected to folding and schistosity with zones of tectonic brecciation. Hydrothermal alterations are represented by carbonatization and chloritization. The ore bodies exposed at the Lazursky and Maslyansky ore deposits are represented by copper-pyrite, copper, and zinc-copper-pyrite massive sulfide ores and other varieties. The major ore minerals of the deposits are chalcopyrite, pyrite, sphalerite, marcasite, and pyrrhotite.

STUDY OF THE COPPER, MANGANESE AND IRON SELECTIVE EXTRACTION REGULARITIES FROM TECHNOGENIC HYDROMINERAL DEPOSITS BY THE NEUTRALIZATION METHOD

2021 ◽  
Vol 27 (6) ◽  
pp. 15-22
Author(s):  
N. Medyanik ◽  
◽  
O. Mishurina ◽  
E. Mullina ◽  
◽  
...  
Keyword(s):  
Heavy Metal ◽  
Research Methods ◽  
Metal Cations ◽  
Selective Extraction ◽  
Mine Waters ◽  
Ph Values ◽  
Copper Manganese ◽  
Copper Pyrite ◽  
Multicomponent Solutions ◽  
Technical Solutions

The article presents a factor analysis of the processes of selective concentration of metals by the neutralization method. In this work, the chemistry of the selective extraction process of heavy metal cations from aqueous solutions by the neutralization method is experimentally studied. The mutual influence of the components of matrix solutions on the index of the extraction degree of Cu (II), Mn (II) and iron ions in mono- and multicomponent model systems has been studied. Based on the results obtained, it is established that the use of the neutralization method for the staged isolation and concentration of valuable components from technical solutions in the form of the target product is possible only in a combination of a set of methods: flotation, flocculation and coagulation. It was found that in the process of neutralization of multicomponent solutions, quantitative extraction from technical solutions is possible at the following pH values: Fe (III)– 4.0, Fe (II) – 6.3, Cu (II) – 6.4, Mn (II) – 9.9. It is indicated that a decrease in the initial concentration of Fe3 + ions in a solution leads to an increase in the pH values of the beginning of its precipitation in the form of a dispersed phase of ferric hydroxide. The rational parameters of the pH values of the studied aqueous systems, at which the selective separation and concentration of the main components of technological solutions with a priority content of Fe (III), Fe (II), Cu (II) and Mn (II) ions is possible, have been experimentally substantiated. The extraction of manganese cations, using the method of neutralization from the studied multicomponent solutions, is impossible for the coprecipitation of all designated metal cations. Therefore, based on the high reductive activity of the divalent form of manganese, it is advisable to selectively concentrate it using the method of redox electrodeposition, the products of which are sparingly soluble stable compounds of trivalent and tetravalent manganese. The relevance of research lies in the need to process acidic mine waters of mining enterprises of the copper-pyrite complex 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 purpose of the study is to study the material composition of mine waters and develop a technology for the selective extraction of cationic forms of copper, manganese and iron. The object of research is technical mono- and multicomponent solutions with a high content of metal cations: Cu2+, Mn2+, Fe2+ and Fe3+. The subject is the possibility of using the neutralization method for the selective processing of hydromineral resources of mining enterprises of the copper-pyrite complex. Material and research methods. General scientific and special research methods have been used during the work. In the implementation of the experiments, a complex of physicochemical methods of analysis has been used: thermodynamic analysis, UV spectroscopy, chemical and assay analyzes. To determine the content of heavy metal ions, adapted methods of photometric analysis have been used: for copper (II) - with pyramine epsilon, for total iron – with o-phenanthroline, for manganese (II) ions – with their preliminary oxidation to permanganate ions

Nickel Bioleaching at Elevated pH: Research and Application

2017 ◽  
Vol 262 ◽  
pp. 197-201 ◽  
Author(s):  
Jian Zhi Sun ◽  
Bo Wei Chen ◽  
Jian Kang Wen ◽  
Biao Wu
Keyword(s):  
Nickel Sulfide ◽  
Industrial Applications ◽  
Low Grade ◽  
Sulfide Ores ◽  
Leaching Rate ◽  
Sulfide Deposits ◽  
Acid Consumption ◽  
Sulfide Ore ◽  
The Cost ◽  
Experimental Researches

Biohydrometallurgy has broad application prospect in the treatment of low-grade nickel sulfide ore. However, quite a number of nickel sulfide deposits are associated with basic gangue minerals such as contain olivine, serpentine. The high basic gangue minerals will lead to a higher acid consumption and make it difficult to bioleach at pH below 2.5. It is crucial to improve processes and adapt bacteria with this kind of ore. This paper reviews the experimental researches and industrial applications for bioleaching of the high acid consumption nickel sulfide ores. It is suggested that bioleaching at elevated pH will have similar leaching rate compared with pH below 2.5, meanwhile the cost will be decreased remarkably due to a lower acid consumption and less dissolved impurity ions.

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