🔥 Ash and slag dumps – worthless waste or hidden treasure?

Did you know that ash and slag dumps may contain hundreds of tons of valuable metals? Researchers have proven: ash processing is not just about ecology—it’s a profitable business!

What was found in the dump?
✔️ Titanium (785 t) – for aerospace industry
✔️ Strontium (183 t) – for electronics and medicine
✔️ Iron (4,867 t) – for metallurgy

Why does it matter?
🌱 Ecology: Processing just 10% of the dumps reduces environmental harm by 20%.
💰 Economics: The project pays for itself in 4 years.

How does it work?
• Gravity separation – sorting ash into fractions
• Magnetic separation – extracting metals
• Concentrate sales – ready-to-use industrial product

What’s next?
The technology is set to be implemented soon. Perhaps soon, power plant ash will be valued as highly as ore deposits!

For more information, see the article:

📌 Shipunov L.V., Kuzmenkov M.A., Gaidai N.K. Assessing viability of processing ash and slag dumps for energy-efficient ash beneficiation at Magadan CPP. Mining Science and Technology (Russia). 2024;9(1):12-20. https://doi.org/10.17073/2500-0632-2023-05-116

💬 What do you think – are such projects worth investing in?

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🔥 Coming soon: new issue of "Mining Science and Technology" Journal!

📅 In the coming days, you'll discover fresh research, innovative technologies, and the latest trends in the mining industry.

This issue features:

📌 Voznesenskii A. S., Ushakov E. I., Kutkin Ya. O. Fracture toughness of rock-concrete interfaces and its prediction based on acoustic properties.
📌 Shilova T. V., Serdyukov S. V., Drobchik A. N. Experimental research of stress-strain properties of sandy soil when strengthened with polyurethane compounds.
📌 Starikov A. N., Maltsev S. V., Sukhanov A. E. Influence of the sorption properties of potash salts on the gas environment in dead-end mine workings.
📌 Chernyi K. А., Faynburg G. Z. Evaluation of variation of salt dust hygroscopic aerosol particle size as a function of relative air humidity.
📌 Mirzaeva E. I., Isaeva N. F., Yalgashev E. Ya., Turdiyeva D. P., Boymonov R. M. Preparation of adsorbents for the extraction of heavy metals from mining wastewater.
📌 Kotelnikova A. L., Zolotova E. S. Material composition of magnetic fractions of copper-smelting slag flotation tailings.
📌 Rakhutin M. G., Tran V. H., Krivenko A. V., Giang Q. Kh. Impact of the technical condition of main pumps on fuel consumption in a hydraulic excavator.
📌 Malafeev S. I., Malafeeva A. A., Konyashin V. I., Novgorodov A. A. Mechatronic system for running-in and testing of mechanical transmissions in mining shovels.
📌 Klyuev R. V. Assessment of energy efficiency improvement strategies for ventilation and hoisting systems during the reconstruction of the Molibden mine.

📅 The issue will be released in the coming days!

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A new issue of Mining Science and Technology has been published! 🎉

Volume 1, 2025 of Mining Science and Technology is now available!

The complete table of contents can be accessed here:
👉 https://mst.misis.ru/jour/issue/view/42/showToc

Featured in this issue:

1️⃣ Voznesenskii А.S., Ushakov E.I., Kutkin Ya.O. Fracture toughness of rock-concrete interfaces and its prediction based on acoustic properties. Mining Science and Technology (Russia). 2025;10(1):5-14. https://doi.org/10.17073/2500-0632-2024-10-316
Full article

2️⃣ Shilova T.V., Serdyukov S.V., Drobchik A.N. Experimental research of stress-strain properties of sandy soil when strengthened with polyurethane compounds. Mining Science and Technology (Russia). Mining Science and Technology (Russia). 2025;10(1):15-24. https://doi.org/10.17073/2500-0632-2024-08-303
Full article

3️⃣ Starikov A.N., Maltsev S.V., Sukhanov A.E. Influence of the sorption properties of potash salts on the gas environment in dead-end mine workings. Mining Science and Technology (Russia). 2025;10(1):25-33. https://doi.org/10.17073/2500-0632-2024-01-210
Full article

4️⃣ Chernyi K.A., Faynburg G.Z. Evaluation of variation of salt dust hygroscopic aerosol particle size as a function of relative air humidity. Mining Science and Technology (Russia). 2025;10(1):34-44. https://doi.org/10.17073/2500-0632-2024-07-283
Full article

5️⃣ Mirzaeva E.N., Isaeva N.F., Yalgashev E.Ya., et al. Preparation of adsorbents for the extraction of heavy metals from mining wastewater. Mining Science and Technology (Russia). 2025;10(1):45-55. https://doi.org/10.17073/2500-0632-2024-02-224
Full article

6️⃣ 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
Full article

7️⃣ Rakhutin M.G., Tran V.H., Krivenko A.E., Giang Q.Kh. Impact of the technical condition of main pumps on fuel consumption in a hydraulic excavator. Mining Science and Technology (Russia). 2025;10(1):67-74. https://doi.org/10.17073/2500-0632-2024-01-179
Full article

8️⃣ Malafeev S.I., Malafeeva A.A., Konyashin V.I., Novgorodov A.A. Mechatronic system for running-in and testing of mechanical transmissions in mining shovels. Mining Science and Technology (Russia). 2025;10(1):75-83. https://doi.org/10.17073/2500-0632-2024-05-262
Full article

9️⃣ Klyuev R.V. Assessment of energy efficiency improvement strategies for ventilation and hoisting systems during the reconstruction of the Molibden mine. Mining Science and Technology (Russia). 2025;10(1):84-94. https://doi.org/10.17073/2500-0632-2024-10-362
Full article

🔗 All articles are freely available in open access!

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How to Optimize Ventilation in Mines Using Diesel Equipment?

🔹 Problem: Modern mines utilize high-power diesel equipment, significantly increasing ventilation load. Traditional airflow calculation methods overestimate requirements by 50%, leading to substantial costs.

🔹 Solution: Researchers developed a novel methodology based on field measurements of actual emissions and numerical simulation. This enables precise determination of airflow needed to dilute harmful substances to safe concentrations.

🔹 Key Results:
✅ Reduced ventilation costs through accurate emission accounting
✅ Optimized air distribution in mine workings
✅ 3.5× decrease in CO and NO₂ concentrations with proper ventilation

For more information, see the article:

📌 Senatorov V.A. Determining airflow requirements in mine workings based on field measurements of actual emissions from internal combustion engine equipment. Mining Science and Technology (Russia). 2024;9(1):53-59. https://doi.org/10.17073/2500-0632-2024-01-203

💡 Conclusion: Innovative calculation methods represent a breakthrough in cost efficiency and environmental safety for mining operations!

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How to improve power quality in variable-frequency drives for scraper conveyors?

🔌 Challenge:
Modern mines are actively implementing VFDs for scraper conveyors. However, this introduces voltage and current distortions, reducing energy efficiency and safety.

📊 Research:
Scientists from MISIS analyzed harmonic distortions in MPDS and evaluated the effectiveness of HFs, reactors, and SFs.

🔹 Key Findings:
✔️ HFs and reactors reduce harmonics upstream of the FC by 70–90%.
✔️ SFs mitigate distortions downstream of the FC but require precise tuning.
✔️ Harmonics in leakage circuits (especially 3rd, 5th, 7th) impact RCDs and personnel safety.
✔️ Combined use of HFs, reactors, and SFs delivers optimal results but needs technical-economic justification.

⚠️ Risks:
Higher harmonics in leakage circuits pose safety hazards and disrupt protective devices.

💡 Recommendations:
1️⃣ Deploy HFs and reactors to suppress harmonics upstream of the FC.
2️⃣ Carefully select SF parameters.
3️⃣ Account for harmonics when configuring RCDs.
4️⃣ Implement real-time power quality monitoring.

📌 Conclusion:
Enhancing power quality in VFD-driven scraper conveyors demands a holistic approach and adaptive protection systems.

For more information, see the article:

📌 Petrov V.L., Pichuev A.V. Assessing the efficiency of measures to enhance electric power quality in variable-frequency drive for scraper conveyors. Mining Science and Technology (Russia). 2024;9(1):60-69. https://doi.org/10.17073/2500-0632-2024-01-198

How do you address these challenges? Share your insights below!

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We present the articles of the first issue of scientific journal "Mining Science and Technology" (Russia) for 2025:

Scientists have analyzed energy efficiency of mining operations, focusing on ventilation fans and hoisting machines as the most energy-intensive equipment. The study examines main ventilation fans and hoisting systems at Molibden mine, proposing optimization measures to improve efficiency and reduce costs. Research methods included analytical approaches for ventilation system evaluation. Findings show inefficient fan operation with excessive energy use, suggesting motor replacement could save 4.9 million rubles annually. Analysis of hoisting equipment recommends modern multi-rope systems for better performance. Data reveals inverse correlation between productivity and energy use - 10–15% output increase reduces energy consumption by 2–5%. Implementing automated controls and optimizing equipment utilization can significantly enhance efficiency. These results are applicable to other deep mining operations.

For more information, see the article:

📌 Klyuev R.V. Assessment of energy efficiency improvement strategies for ventilation and hoisting systems during the reconstruction of the Molibden mine. Mining Science and Technology (Russia). 2025;10(1):84–94. https://doi.org/10.17073/2500-0632-2024-10-362

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