We present the articles of the third issue of scientific journal "Mining Science and Technology” (Russia) for 2024:
“Invisible” gold is referred to submicroscopic gold particles that are 1–100 nm in size and are not detected using optical or electron microscopy. The presence of “invisible” gold and silver in ores complicates the selection of flow charts for their processing and owes the necessity for the development of new process solutions and improvement of existing ones. Experiments have shown the necessity of using magnetite to achieve coarsening fine silver particles. The optimal magnetite content is 10%, which leads to the formation of spherical aggregates of silver with a size of 20-40 microns. As a result of processing, it was possible to increase the particle size of precious metals up to 20-50 microns, which can then be extracted using traditional enrichment methods.
For more information, see the article:
🔥 Aleksandrova Т.N., Afanasova A.V., Aburova V.A. “Invisible” noble metals in carbonaceous rocks and beneficiation products: feasibility of detection and coarsening. Mining Science and Technology (Russia). 2024;9(3):231-242. https://doi.org/10.17073/2500-0632-2024-03-229 🔥
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#inenglish #MST #beneficiation #ore #flotation #silver #magnetite #gold #microwave #processing
“Invisible” gold is referred to submicroscopic gold particles that are 1–100 nm in size and are not detected using optical or electron microscopy. The presence of “invisible” gold and silver in ores complicates the selection of flow charts for their processing and owes the necessity for the development of new process solutions and improvement of existing ones. Experiments have shown the necessity of using magnetite to achieve coarsening fine silver particles. The optimal magnetite content is 10%, which leads to the formation of spherical aggregates of silver with a size of 20-40 microns. As a result of processing, it was possible to increase the particle size of precious metals up to 20-50 microns, which can then be extracted using traditional enrichment methods.
For more information, see the article:
🔥 Aleksandrova Т.N., Afanasova A.V., Aburova V.A. “Invisible” noble metals in carbonaceous rocks and beneficiation products: feasibility of detection and coarsening. Mining Science and Technology (Russia). 2024;9(3):231-242. https://doi.org/10.17073/2500-0632-2024-03-229 🔥
Subscribe to the journal's Telegram channel:
👉t.iss.one/MinSciTech👈
#inenglish #MST #beneficiation #ore #flotation #silver #magnetite #gold #microwave #processing
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How to enhance the efficiency of reverse flotation of iron ore concentrates through electrochemical treatment of reagents?
The most effective methods to achieve high-quality iron ore concentrates is through reverse flotation using cationic amine collectors in an alkaline medium. However, due to the very fine impregnation of magnetite in quartz, the insufficiently complete release of magnetite even with fine grinding, and the proximity of the flotation (surface) behavior of the separated minerals, high-quality concentrates are not always achievable in the flotation process. The research findings confirmed the feasibility of using preliminary diaphragmless electrochemical treatment of reagents Tomamine RA-14 and Lilaflot 811M (esters of monoamine of different composition) for the targeted modification of their properties and for increasing the efficiency of reverse flotation. Consequently, the silica content in the flotation cell product decreased from 1.66–1.7% to 1.51–1.56, with the grade of total iron exceeding 70%.
For more information, see the article:
📌 Rakhimov Kh.K., Chanturiya E.L., Shekhirev D.V. Electrochemical action on the flotation beneficiation of ordinary iron ore concentrate. Mining Science and Technology (Russia). 2024;9(1):21-29. https://doi.org/10.17073/2500-0632-2023-12-196
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#Inenglish #MST #reverseflotation #ironore #electrochemicaltreatment #cationiccollectors #amines #alkalinemedium #magnetite #quartz #silica #finegrinding #flotationpulp #aminedispersion #physicaladsorption #diaphragmlesstreatment #TomaminePA14 #Lilaflot811M #totaliron #flotationbehavior #ionicforms #molecularforms
The most effective methods to achieve high-quality iron ore concentrates is through reverse flotation using cationic amine collectors in an alkaline medium. However, due to the very fine impregnation of magnetite in quartz, the insufficiently complete release of magnetite even with fine grinding, and the proximity of the flotation (surface) behavior of the separated minerals, high-quality concentrates are not always achievable in the flotation process. The research findings confirmed the feasibility of using preliminary diaphragmless electrochemical treatment of reagents Tomamine RA-14 and Lilaflot 811M (esters of monoamine of different composition) for the targeted modification of their properties and for increasing the efficiency of reverse flotation. Consequently, the silica content in the flotation cell product decreased from 1.66–1.7% to 1.51–1.56, with the grade of total iron exceeding 70%.
For more information, see the article:
📌 Rakhimov Kh.K., Chanturiya E.L., Shekhirev D.V. Electrochemical action on the flotation beneficiation of ordinary iron ore concentrate. Mining Science and Technology (Russia). 2024;9(1):21-29. https://doi.org/10.17073/2500-0632-2023-12-196
Subscribe to the journal's Telegram channel:
👉t.iss.one/MinSciTech👈
#Inenglish #MST #reverseflotation #ironore #electrochemicaltreatment #cationiccollectors #amines #alkalinemedium #magnetite #quartz #silica #finegrinding #flotationpulp #aminedispersion #physicaladsorption #diaphragmlesstreatment #TomaminePA14 #Lilaflot811M #totaliron #flotationbehavior #ionicforms #molecularforms
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We present the articles of the first issue of scientific journal "Mining Science and Technology” (Russia) for 2025:
Scientists studied finely ground tailings from the flotation processing of slags at the Sredneuralsky Copper Smelter ("SUMZ technical sands"), which contain zinc (3.3–3.9%) and copper (0.4–0.5%). These wastes can serve both as a source of valuable metals and as a potential environmental hazard. The study examined the material composition of the magnetic fractions of the "technical sands" and evaluated the efficiency of wet magnetic separation for extracting valuable components. Chemical and phase analyses revealed that zinc and copper were distributed relatively evenly across the fractions, with a slight increase in copper in the non-magnetic fraction and zinc in the weakly magnetic fraction. The application of wet magnetic separation under standard conditions proved insufficiently effective, indicating the need for further research to optimize the technology. The results are important for developing new methods of processing copper smelting waste and reducing its environmental impact.
For more information, see the article:
📌 Kotelnikova А.L., Zolotova E.S. Material composition of magnetic fractions of copper-smelting slag flotation tailings. Mining Science and Technology (Russia). 2025;10(1):56-66. https://doi.org/10.17073/2500-0632-2023-08-142
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#InEnglish #MST #CopperSmeltingProduction #MineralWaste #CopperSmeltingSlag #FlotationTailings #Recycling #MagneticSeparation #ThermomagneticAnalysis #MagneticFractions #MagneticProperties #Fayalite #Forsterite #Diopside #Magnetite #Sphalerite #Zincite #HeavyMetals #WasteProcessing #NonferrousMetallurgy #EnvironmentalImpact #ResourceRecovery #SlagUtilization #Geochemistry #Mineralogy #SustainableMining #TechnogenicRawMaterials #Copper #Slags #Zinc #Waste #Flotation #Separation #Magnetism #Minerals #Ecology #Processing #Research #Technologies #Utilization #Disposal #Geology
Scientists studied finely ground tailings from the flotation processing of slags at the Sredneuralsky Copper Smelter ("SUMZ technical sands"), which contain zinc (3.3–3.9%) and copper (0.4–0.5%). These wastes can serve both as a source of valuable metals and as a potential environmental hazard. The study examined the material composition of the magnetic fractions of the "technical sands" and evaluated the efficiency of wet magnetic separation for extracting valuable components. Chemical and phase analyses revealed that zinc and copper were distributed relatively evenly across the fractions, with a slight increase in copper in the non-magnetic fraction and zinc in the weakly magnetic fraction. The application of wet magnetic separation under standard conditions proved insufficiently effective, indicating the need for further research to optimize the technology. The results are important for developing new methods of processing copper smelting waste and reducing its environmental impact.
For more information, see the article:
📌 Kotelnikova А.L., Zolotova E.S. Material composition of magnetic fractions of copper-smelting slag flotation tailings. Mining Science and Technology (Russia). 2025;10(1):56-66. https://doi.org/10.17073/2500-0632-2023-08-142
Subscribe to our Telegram channel:
👉 t.iss.one/MinSciTech 👈
#InEnglish #MST #CopperSmeltingProduction #MineralWaste #CopperSmeltingSlag #FlotationTailings #Recycling #MagneticSeparation #ThermomagneticAnalysis #MagneticFractions #MagneticProperties #Fayalite #Forsterite #Diopside #Magnetite #Sphalerite #Zincite #HeavyMetals #WasteProcessing #NonferrousMetallurgy #EnvironmentalImpact #ResourceRecovery #SlagUtilization #Geochemistry #Mineralogy #SustainableMining #TechnogenicRawMaterials #Copper #Slags #Zinc #Waste #Flotation #Separation #Magnetism #Minerals #Ecology #Processing #Research #Technologies #Utilization #Disposal #Geology
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