Valentin Chanturiya

Valentin Chanturiya
Russian Academy of Sciences | RAS

academician RAS

About

255
Publications
7,720
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
788
Citations
Additional affiliations
September 1962 - present
IPCON RAS
Position
  • academician

Publications

Publications (255)
Article
Using a combination of UV-spectrophotometry, IR-Furie spectroscopy, analytical scanning electron (LEO 1420VP INCA OXFORD ENERGY 350) and laser (KEYENCE VK-9700) microscopy the effect of complexing reagents DBDTC, TMPPh, TOFA, and IM-50 on adsorption layer on the surface of chalcopyrite, galena, arsenopyrite, and cassiterite was studied. The individ...
Article
Badanie modyfikacji stanu strukturalno-chemicznego i właściwości sorpcyjnych powierzchni kolumbitu i eudialitu pod wpływemimpulsów nanosekundowych o dużej mocy (HPEMP) przeprowadzono za pomocą XPS i FTIR. Ustalono, że wstępna obróbka minerałów metali rzadkich impulsami nanosekundowymi o dużej mocy jest obiecującym narzędziem do kierunkowych zmian i...
Article
Full-text available
Using a combination of energy – dispersive X-ray spectroscopy, X-ray diffraction, X-ray fluorescence, Infrared and X-ray photoelectron spectroscopies, the effect of acids (sulfuric, hydrochloric, and nitric) and energy impacts (electrochemical, mechanochemical, high power electromagnetic pulses, ultrasound) on the leaching parameters of eudialyte c...
Article
Full-text available
Based on luminophore combination being close to diamond in luminescence parameters, water-organic emulsions were synthesized that modified spectral-kinetic characteristics of low-luminescent diamond crystals. The combination of luminophores was used, including an organic luminophore, anthracene, and inorganic luminophore, K-35, the spectral and kin...
Article
The authors present an efficient modification method of X-ray fluorescence separation with mineral and organic luminophores used to adjust spectral and kinetic characteristics of anomalously luminescent diamonds. The mechanism of attachment of luminophores at diamonds and hydrophobic minerals is proved, including interaction between the organic com...
Article
Surface modification of natural metal sulfides (pyrite, arsenopyrite, chalcopyrite, sphalerite, galena, and molybdenite) treated by high-power electromagnetic pulses (HPEMP treatment) has been studied by X-ray photoelectron spectroscopy as a function of HPEMP treatment duration. Two principal common steps and some differences in the surface evoluti...
Article
Full-text available
The influence of nitric, sulfuric and chlorohydric acids on the morphology, composition of elements, structural and chemical transformation of mineral surface and leaching of eudialyte concentrate is studied using a set of the modern analytical techniques. Specific features are revealed in the nature and degree of eudialyte decomposition under the...
Article
Thermodynamic concepts are shown to be inadequate when applied to the complex multi-staged and fast formation process of a flotation complex and the relevance is demonstrated of studying the interaction kinetics of a mineral particle and a gas bubble. A mechanism is proposed explaining the formation of flotation contact, in which both the ionic and...
Chapter
The main methodological parameters and the modes of investigation of samples containing micro- and nano-sized reagent phases are determined. Using scanning laser microscopy and an original method for analyzing the surface relief, a quantitative assessment of the adsorption layer of the collector reagent on Au-sulfide minerals was performed, the pro...
Article
Using the methods of X-ray phase analysis, analytical scanning electron microscopy and inductively coupled plasma mass spectrometry, the influence of preliminary energy effects on transformations of eudialyte concentrate base minerals during nitric acid leaching, their micromorphology and phase composition of the surface is studied. It is found tha...
Article
Full-text available
A set of analytical studies has established differences in the composition of mineral formations on the surface of natural diamonds of intensely altered kimberlites under the conditions of occurrence and processing of diamond-bearing ores. A classification of mineral formations on diamonds has been proposed depending on their origin, properties and...
Article
FTIR, Hammett indicator adsorption, microhardness testing, and other physicochemical means of analysis (electrokinetic potential, contact angle of wetting, floatability) are used to study the mechanism of structural–chemical transformations of the surface, the change in physicochemial, mechanical, and technological properties of natural quartz unde...
Article
Full-text available
The mechanism of change in the structural, chemical, physicochemical, and technological properties of Lavozero-deposit eudialyte, caused by the effect of high-voltage nanosecond pulses and combined (sequential) electropulse and acid treatment of mineral samples, is studied by means of X-ray photoelectron spectroscopy, Fourier-transform infrared spe...
Article
The results of the experimental studies into formation conditions of gas dispersion during electrolytic flotation are presented. The facing factors of electrolytic bubbling are considered. The influence exerted by the electrolysis process parameters and electrolytic compositions of water solutions on the dispersion state and gas content of electrol...
Article
Adsorption of IM-50 and tall oil fatty acid (ZHKTM) on cassiterite is for the first time determined using the electron and laser microscopy. The micro images of cassiterite polished sections treated with the collecting agents show newly formed phases of an organic matter, the X-ray spectra of the phases feature the increased carbon content. When ca...
Article
Using a set of modern analytical and experimental research methods, the composition of diamondbearing kimberlite and placer materials as well as process slurry is analyzed. It is experimentally found that current and old tailings of diamond-bearing kimberlite mine and placer ore contain many secondary minerals and associates. High content of clayey...
Article
The procedure is developed for modification of diamond surface by luminophore-containing organic compositions. The compositions are composed of an organic luminophore—scintillation anthracene, inorganic luminophore K-35 and cetane. Indication compositions are synthesized based on the selected luminophores and organic liquids and tested using pilot...
Article
Full-text available
The modification of structural chemical properties of natural fluorite, scheelite and calcite under the impact of high-power electromagnetic pulses (HPEMP-treatment) were studied with help of adsorption of acid-base indicators. It was determined that the HPEMP-treatment during of 30 seconds (3 x 103 pulses) resulted in the intensification of fluori...
Article
Full-text available
Methods of cleaning and processing of saponite-containing water from diamond processing plants in the Arkhangelsk region, Russia, are discussed. The advantages of electrochemical separation of saponite from process water enabling to change its structural-texture, physico-chemical and mechanical properties are demonstrated. Possible areas of saponit...
Article
—Using UV-visible spectrophotometry, it is found that old tailings of Solnechny Mining and Processing Plant are characterized with high absorptive capacity relative to sodium dibutyl dithiocarbamate (DBDTC) and require high consumption of collecting agents in flotation. The optical and scanning electron microscopy tools revealed gypsum-cemented fin...
Preprint
The analysis of methods of cleaning and processing of saponite-bearing technogenic waters of diamond mining enterprises of the Arkhangelsk region is carried out. The perspective of the electrochemical separation method for extracting saponite from man-caused waters, providing a targeted change in its structural-texture, physico-chemical and mechani...
Article
In this paper the possibility of applying flocculation of slurry fractions of cassiterite from hardly-enriching tin-containing ores using thermomorphic polymer with a group of phosphine, which can form complex compounds with a tin cation, has been studied. Using the complex of modern physicochemical methods of investigation, the effect of a thermom...
Article
Full-text available
The authors have studied the mechanism of controlled modification of composition, structure, chemistry, physicochemical and process properties of columbite, tantalite, zircon and feldspar at the meso-, micro- and nanoscales after nonthermal treatment by high-voltage nanosecond electromagnetic pulses. The studies used methods: X-ray photoelectron sp...
Article
Full-text available
The mechanism of the structural and chemical state modification of columbite, tantalite and zircon surface under the effect of high-voltage nanosecond pulses is investigated using a set of precision physical and chemical methods (e.g., XPS, FTIR, SEM–EDX, potentiometric titration, electrophoretic light scattering, AFM–Kelvin force probe microscopy,...
Article
Full-text available
The mechanism of weakening and directional change in structural and chemical properties of eudialyte under nonthermal exposure to nanosecond high-voltage electromagnetic pulses and nitric-acid leaching is studied. The methods of X-ray photoelectron spectroscopy, Fourier-transform infrared spectroscopy, scanning electron microscopy and microhardness...
Chapter
To improve the existing diamond recovery process, the effect of high-power (high-voltage) nanosecond electromagnetic pulses (HPEMP) on the physical and technological properties of diamond crystals was studied. Infrared Fourier spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), microscopy, electroosmosis, and other methods were employed to...
Article
The mechanism behind the modification of the surface chemical structure and technological and physicochemical properties of Ca-bearing minerals (calcite, scheelite, and fluorite) under the effects of highvoltage nanosecond pulses is investigated by means of XPS, FTIR, X-ray luminescence spectroscopy, electrophoretic light scattering (ζ-potential),...
Article
Organic and inorganic luminophores of similar luminescence parameters as diamonds are selected. Indicators, based on the selected luminophores, are synthesized. Spectral and kinetic characteristics of luminophores are experimentally determined for making a decision on optimal compositions to ensure maximum extraction of diamonds in X-ray luminescen...
Article
Full-text available
The investigation of influence exerted by ultrasound processing on recovery of zirconium and rare earth elements in pregnant solution of acid leaching of eudialyte concentrate is described. The methods of X-ray photoelectron spectroscopy and analytical scanning electron microscopy are used to study structural, chemical and morphological characteris...
Article
Using ultraviolet-visible spectrophotometry and laser and electron microscopy, adsorption of cyanuric triamide agent (CTA) at the surface of silver-rich galena PbS-Ag and pyrite FeS2-Ag is recorded. The X-ray spectrum of the new reagent phase on silver particles contains O, C and N bands typical of CTA. New experimental data on kinetics of selectiv...
Article
The feature of the mining and metallurgy development in Russia is the increase in volume of rebellious natural raw materials and mining waste, with low content of valuable components and finely disseminated aggregates composed of minerals with similar process properties, that are to be treated. Under such conditions, the highly efficient and ecolog...
Article
For the first time, we investigated the influence of the complexing agent diantipyrylmethane (DAM) (pyrasol derivative) on flotation and sorption properties of sulfide minerals, cassiterite and silver, included in complex refractory tin-bearing ores. We also found the possibility of formation of hardly soluble compounds of DAM with copper, lead, zi...
Article
We obtained some new coal sorbents, modified by sulfur-and phosphorousbearing collectors: oxypropyl ether of diisopropyldithiophosphorous acid (Afm), oxypropyl ether of dibuthildithiocoal acid (OPBK), 1, 2-di(1, 3, 5-dithiazin-5il) methane (MTKh) and 1, 2-di(1, 3, 5-dithiazin-5il) ethane (ETKh). We considered the possibility of the flotation and so...
Article
Full-text available
The article gives test data on the influence exerted by energy impacts (ultrasonic, electrochemical and thermal) on the recovery of zirconium and rare earth elements from eudialyte concentrate to leach solution in acid leaching. An original installation is developed for the implementation of leaching. Based on the research findings on the kinetics...
Chapter
In the present paper, we attempted to substantiate the efficiency of non-thermal high-power (high-voltage) nanosecond electromagnetic pulses for the directional change of phase (chemical and functional) composition and technological properties of kimberlite rock-forming minerals (olivine, calcite and serpentine) investigated using a complex of phys...
Article
Full-text available
The paper presents the results of the recent research performed in IPKON Russian Academy of Sciences that deals with development and substantiation of new selective reagents for effective flotation recovery of non-ferrous and noble metals from refractory ores. The choice and development of new selective reagents PTTC, OPDTC, modified butylxanthate...
Article
Full-text available
The results of the laboratory and pilot-scale testing of electrochemical water treatment technology in processing of rare-metal ores from a Russian deposit, containing tantalum-niobates, zircon, quartz and feldspar, are presented. Water electrolysis acid product - anolyte (pH 2.5, Eh ∼ 850 mV, [O2] ∼ 25 mg/l) was used as liquid phase. The tests cor...
Article
The article reports test data on adsorption and flotation characteristics of thermomorphic polymer joined with diphenylphosphine—TMPD. The test materials are natural pyrite and arsenopyrite, and models of gold-bearing sulfide minerals. Electron microscopy and X-ray structure analysis prove that reductive adsorption of gold at the surface of sulfide...
Article
Full-text available
The results of experimental studies and scientific substantiation of an effect of directional change in the chemical and phase composition of the surface and increase in the contrast of physicochemical and electrical properties of tantalite, columbite, and zircon in the course of treatment with anolyte (pH < 5) and a hydrochloric acid solution (HCl...
Article
Full-text available
Structural and chemical modifications of tantalite and columbite surfaces, induced by treating the minerals with anolyte—a product derived via the electrolysis of aqueous solutions—and high-voltage electromagnetic pulses, are studied by means of X-ray photoelectron spectroscopy, scanning electron microscopy, energy-dispersive spectroscopy, atomic f...
Article
Fourier transform infrared spectroscopy (FTIR), analytical electron and atomic force microscopy, and physicochemical examination of the structure and properties of mineral surfaces are used to study changes in the structural defects, functional and chemical compositions, and surface electrical properties and hydrophobicity of diamond surfaces expos...
Article
The article gives new experimental data on chemistry, phase composition, structure and physicochemical properties of surface of minerals composing metasomatically altered kimberlite rocks. The authors have determined formation conditions and basic genetic types of mineral micro- and nano-size phases on diamond surface in the form of aluminosilicate...
Article
The structural and chemical surface transformation of basic kimberlite-forming minerals (calcite, olivine, serpentine) under the contact with natural and waste mineralized water and products of electrochemical treatment of the water are studied using X-ray photoelectronic spectroscopy, scanning electron microscopy and X-ray spectral micro-analysis,...
Article
The modern state of complex processing technology for widely-used ores was analyzed, and the main ways of their development were defined: methods of selective opening of polymineral complex joints with sequent free minerals' excreting in finished concentrates; intercycle operations; intensive finishing of concentrates and hardly-separated products...
Article
Using a package of modern methods of mineral substance analysis, the authors obtain scientific evidence on structural, physicochemical properties and mineral composition of products electrochemically removed from saponite-containing service water at Severalmaz diamond mines. It is found that microstructure of electrochemically modified saponite pre...
Article
Full-text available
The results of the comprehensive experimental studies related to the effect of directed changes in sorption properties of tantalite, columbite, zircon, quartz and feldspar, as well as in composition of caprylhydroxamic acid compounds, formed on their surface, and also the minerals' flotability in the process of their treatment with water electrolys...
Article
An effective method of recovering a saponite-containing product and desliming the circulating water of Severalmaz, JSC, has been proposed. The method is expected to enhance the efficiency of diamond recovery from ores and improve the ecological situation by introducing water recycling. Studies of the mineral composition have revealed a higher conte...
Article
The scope of the discussion embraces main definitions of a constituent of the geoecology—environmental mineralogy. The main research areas, objectives and subjects of the environmental mineralogy are specified. It is highlighted that yet no regulating documents are available for mineralogical analyses during environmental appraisal of mineral minin...
Article
The article gives a report on integrated experimental research into targeted change of chemical and phase composition of surface and increase in contrast of physicochemical, electrical and electrochemical properties of tantalite, columbite and zircon under treatment by acid product of water electrolysis—anolyte (pH < 5) and by muriatic solution (HC...
Article
Using a set of physicochemical methods (XPS, analytical electron microscopy, the adsorption of acid–base indicators, and measuring microhardness), the effectiveness of nonthermal action produced by nanosecond high voltage pulses for targeted changes in the phase (functional chemical) composition and technological properties of rock-forming minerals...
Article
This paper offers the qualitative method of confirmation of chemical adsorption of flotation reagents on mineral surface by the formed complex compounds coloring. Color conformance of the compounds, formed on mineral surface after the contact with complexing agents, was found by microscopic investigations of chalcopyrite, pyrite and sperrylite thin...
Article
The analytical research has yielded differences in composition of mineral species on the surface of natural diamonds of hyperaltered kimberlites under conditions of diamond ore occurrence and processing. The classification of the mineral species is based on the mineral origin, properties and attachment on the diamond crystal surface.