14 Result(s)
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Article
Enhancing multipurpose use of cow-parsnip in processing of gold-bearing sulfides
The authors consider variants of multipurpose use of plant materials—ground green mass of Sosnovsky cow-parsnip. Simultaneous production of aqueous extract possessing depression properties and post-extraction ...
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Article
Gold mineral flotation versus preparation conditions in a complexing agent belonging to dithiazinanes
To gain the efficient and optimized application of agents MTH and ETH belonging to dithiazinanes to float gold from complex ores the investigation was undertaken on complexing conditions in water environment a...
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Article
Sulfhydryl phosphorus-containing collectors in flotation of copper–nickel platinum-group metals
The analysis involves influence of sulfhydryl phosphorus-containing collectors (SPC) on flotation of copper–nickel ore-bearing metals from platinum group. Efficiency of SPC and butyl xanthate combination is il...
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Article
Composition of multicomponent heracleum extracts and its effect on flotation of gold-bearing sulfides
Using the proprietary method, the authors have obtained flotation agent BO—extract of atomized leaves and stalks of Heracleum sosnowskyi (hogweed), and analyzed its composition. Qualitative tests, thin-layer chro...
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Article
Complexing collecting agent for selective flotation of chalcopyrite
Under analysis is interaction between 1-phenyl-2,3-dimethylaminopyrazolone-5 (AMD) and copper in solution and on the surface of chalcopyrite. It is found that AMD experiences chemical adsorption on the surface...
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Article
Physicochemical effect of modified diethyldithiocarbamate on the surface of auriferous sulfide minerals in noble metal ore flotation
Complexing processes between modified diethyldithiocarbamate (DDC) and copper, iron and gold ions in solution, as well as adsorption of modified solution on auriferous pyrite and arsenopyrite are analyzed usin...
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Article
New experimental evaluation techniques for selectivity of collecting agents for gold and platinum flotation from fine-impregnated noble metal ores
It is proposed to apply nanosize Au and Pt particles to ground mineral particles for the analysis of flotation and adsorptive properties of new reagents. The authors have obtained specimens of pyrite, arsenopy...
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Article
Improved selectivity of sulfide ore flotation
The article analyzes flotation and adsorption capacity of a new complexing reagent AMD (nitrogen and oxygenated organic compound belonging to phenylpyrazole class) toward sphalerite, chalcopyrite and pyrite, c...
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Article
New complexing agents to select auriferous pyrite and arsenopyrite
The authors propose the process for selective flotation of auriferous pyrite and arsenopyrite, where the combination of xanthate, 2-hydroxylpropyl ester of diethyldithiocarbamate acid (HPEDEDCA) and oak-bark e...
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Article
Interaction of sodium diisobutyl dithiophosphinate and platinum in aqueous solutions and on sulphide surface
For the noble metal flotation reagents, the authors propose a new test method of selective adsorption on surface of minerals covered with noble metal grains, by using a scanning electron microscope equipped wi...
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Article
Application of complexing reagents to flotation separation of the varieties of pyrite
It is considered how the organic reagents, complexing agents, change floatability of the varieties of pyrite with different content of goal. The authors continue studying the flotation effect of the reagent PR...
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Article
Effect of ozone on physico-chemical and flotation properties of surface of pyrrhotite under the nanosecond electromagnetic pulse treatment
It is proved by testing that the effect of nanosecond powerful electromagnetic pulses (PEMP) tends to give rise to both pyrrhotite disintegration and alterations of its particles’ surface chemistry. It is foun...
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Article
Use of thin-layer chromatography in synthesis of the PROX flotation agent and investigation of its interaction with sulfide minerals
The conditions are investigated for applying the method of thin-layer chromatography to analyze components of reaction mixture in synthesis of a new flotation agent. The possibilities of this method to identif...
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Article
Intensification of the Dissolution Process of Rebellious Gold-Bearing Products under Action of a Flow of Accelerated Electrons
An evaluation is made for the effectiveness of using a flow of accelerated electrons to help dissolve rebellious gold-bearing gravitational concentrate of variable coarseness. The article examines the effect o...
