Dear Colleagues!

The issue (No. 4, 2024) of the Mining Science and Technology (Russia) journal has been published on our website.

🔥Hurry to read!🔥

In the new issue:

📌 Al-Dujaili A.N. New advances in drilling operations in sandstone, shale, and carbonate formations: a case study of five giant fields in the Mesopotamia Basin, Iraq. Mining Science and Technology (Russia). 2024;9(4):308-327. https://doi.org/10.17073/2500-0632-2023-08-146
📌 Bagdasarau M.A., Mayevskaya A.N., Petrov D.O., Sheshko N.N. GIS modeling of a Cenozoic strata structure in Brest region for forecasting and evaluation of non-metallic deposits. Mining Science and Technology (Russia). 2024;9(4):328-340. https://doi.org/10.17073/2500-0632-2024-03-230
📌 Deryaev A.R. Directional drilling of an exploratory well in the shallow waters of the Caspian Sea. Mining Science and Technology (Russia). 2024;9(4):341-351. https://doi.org/10.17073/2500-0632-2024-02-217
📌 Boyarko G.Yu., Lapteva A.M., Bolsunovskaya L.M. Mineral resource base of Russia’s copper: current state and development prospects. Mining Science and Technology (Russia). 2024;9(4):352-386. https://doi.org/10.17073/2500-0632-2024-05-248
📌 Kalashnik A.I. Effect of water inflows on the strength characteristics of the Lovozero rare-metal deposit rocks. Mining Science and Technology (Russia). 2024;9(4):387-394. https://doi.org/10.17073/2500-0632-2023-09-160
📌 Korol E.A., Degaev E.N., Konyukhov D.S. Assessing dust concentration at the workplace of a crushing and screening plant operator for special labor conditions evaluation. Mining Science and Technology (Russia). 2024;9(4):395-405. https://doi.org/10.17073/2500-0632-2024-03-235
📌 Mitrakova N.V., Khayrulina E.A., Perevoshchikova A.A., Poroshina N.V., Malyshkina E.E., Yakovleva E.S., Kobelev N.A. Chemical and ecological properties of soils and the NDVI analysis on reclaimed sulfide coal waste dumps in the boreal zone. Mining Science and Technology (Russia). 2024;9(4):406-419. https://doi.org/10.17073/2500-0632-2024-04-206
📌 Borisenko V.F., Sidorov V.A., Sushko A.E., Rybakov V.N. Vibration metrics for informational support in assessing the technical condition of ball mills. Mining Science and Technology (Russia). 2024;9(4):420-432. https://doi.org/10.17073/2500-0632-2023-10-175

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#inenglish #MST #issue #hydrocarbons #field #reserves #basin #formation #extraction #drilling #well #productivity #solution #accident #reservoir #bit #control #Iraq #geology #Cenozoic #forecast #GIS #ArcGIS #evaluation #Brest #energy #efficiency #exploration #well #CaspianSea #copper #ore #deposit #mining #Russia #mine #rock #hazard #Lovozero #Karnasurt #production, #crushedstone, #dust, #concentration #emissions #harm #protection #coal #dump #waste #reclamation #lithostrat #soil #NDVI #embryonic #mill #electricdrive #electricengine #shaft #bearing #operation #damage #failures #control #diagnostics #vibration #signal #frequency #analysis #correlation

We present the articles of the third issue of scientific journal "Mining Science and Technology” (Russia) for 2024:

A systematic approach to evaluating environmental safety in metro operations, based on modelling the development of defects in tunnel structures under the influence of hydrogeological factors, will help organize existing information on potential accidents and develop monitoring methods and measures to minimize risks that compromise the environmental sustainability of underground transport infrastructure.

For more information, see the article:

📌 Zhukov S.A. Substantiation of environmental safety in metro facility operations considering hydrogeological risks. Mining Science and Technology (Russia). 2024;9(3):283-291. https://doi.org/10.17073/2500-0632-2024-04-259

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#inenglish #MST #metro #underground #subway #ecology #safety #innovation #risks #geology #transport #hydrogeology #sustainability #accident #monitoring #tunnel #technology #construction #emission #energy #efficiency #concrete #defects #extraction #quicksand #aquifer #borehole #lining #deformation #leaching #tubbing #modeling #geomechanics #waterproofing #disposal #waste

Dry technologies for processing and enrichment of mineral raw materials - pros and cons!

The use of dry methods of processing and beneficiation of mineral raw materials is one of the promising areas, as this approach to concentrate production is less energy-consuming, less labor-intensive, and economically beneficial. However, this method of enrichment is not always technologically effective. Experimental studies on the experimental studies on preliminary dry separation of Arkachan deposit ores to determine the quality of beneficiation of the separation products are presented in an article in the journal Mining Science and Technology. The results of the study showed, dry beneficiation as applied to the ores of Arkachan deposit is technologically inefficient. Additional laboratory studies of pneumatic separation processes at high degree of ore materials grinding are required. The authors of the study are confident that their methodological approach will be useful for colleagues in substantiating technologies for processing and beneficiation of mineral raw materials.

For more information, see the article:

📌 Matveev А.I., Lebedev I.F., Vinokurov V.R., Lvov E.S. Comparative processing studies of the Arkachan deposit gold-bearing ores using dry separation and classical wet gravity separation methods. Mining Science and Technology (Russia). 2024;9(2):158-169. https://doi.org/10.17073/2500-0632-2023-10-168

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#inenglish #MST #beneficiation #ore #gold #grinding #crushing #pneumaticseparation #gravity #concentrator #classification #mill #crusher #recovery #concentrate #tails #size #fractions #separation #content #release #surface #pneumaticseparator #magnetic #dry #goldbearing #cycle #deposit #sample #methodology #test #technology #efficiency #property #particle #material #economy #recycling

We present the articles of the fourth issue of scientific journal "Mining Science and Technology” (Russia) for 2024:

This article describes the successful drilling of wells X1 and X2 in North Goturdepe, which confirmed the presence of oil and gas reserves and allowed for optimizing the costs of constructing drilling pads. The application of directional drilling in the Caspian Sea accelerates exploration activities, increases the efficiency of hydrocarbon production, and reduces the environmental impact. While this method is becoming an important element of Turkmenistan’s energy strategy, further study of the environmental aspects is required to ensure the sustainable development of the industry.

For more information, see the article:

📌 Deryaev A.R. Directional drilling of an exploratory well in the shallow waters of the Caspian Sea. Mining Science and Technology (Russia). 2024;9(4):341-351. https://doi.org/10.17073/2500-0632-2024-02-217

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#inenglish #MST #energysecurity #drilling #efficiency #exploration #innovation #technology #well #marineenvironment #CaspianSea #Turkmenistan

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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#InEnglish #MST #mining #ventilation #diesel #exhaustgases #numericalsimulation #safety #undergroundmining #ICE #aerodynamics #fieldmeasurements #concentration #CO #NOx #MAC #standards #optimization #costreduction #energyefficiency #technology #digitalization #monitoring #mineatmosphere #workings #aircontrol #hazardoussubstances #filtration #temperature #pressure #humidity #analysis #equipment #efficiency #research #methodology #calculation #dynamics #operationmode #load #results #implementation #practicalapplication

How to improve mine planning efficiency by 20 times?

🔍 Breakthrough in mining: scientists have developed an innovative approach for open-pit mineral deposit planning!

💡 Core Technology:
A hybrid algorithm combining:
→ Parametric analysis of pit limits;
→ Integer programming;
→ Strategic decision variable fixation.

📈 Key Advantages:
✔️ 95% faster calculations (from 8 hours → 24 minutes!);
✔️ Handles complex deposits with millions of blocks;
✔️ Generates alternative extraction scenarios;
✔️ Maintains 97-99% economic efficiency.

🌍 Practical Applications:
• Large-scale open pits;
• Deposits with challenging geology;
• Rapid plan adjustments to market changes.

For more information, see the article:

📌 Hasozdemir K., Erçelebi S. Enhancing the performance of integer models for addressing the long-term production planning problem in open pit mines by decision variable fixation based on parametric analysis of the final pit limit. Mining Science and Technology (Russia). 2024;9(2):74-84. https://doi.org/10.17073/2500-0632-2023-09-156

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💥 How does the detonation velocity of explosives affect rock fracturing?

In quarries for building stone extraction, up to 30% of the rock turns into fines after blasting and crushing, reducing economic efficiency. One of the key factors is the prefracture zones formed during explosive detonation.

🔬 What was studied?

1️⃣ Explosive detonation velocity (ranging from 2 to 5.2 km/s).
2️⃣ Stresses in the rock mass during blasting.
3️⃣ Microfracturing using X-ray microtomography.

📊 Results:

✔️ The size of the prefracture zone increases from 33R to 77R (where R is the charge radius) as detonation velocity rises.
✔️ Microfracture density (N) depends on the distance from the charge:
• Near zone (10R): from 5,000 to 13,800 pcs/cm³ (exponential growth).
• Far zone (70R): from 0 to 200 pcs/cm³ (linear growth).

💡 Practical conclusions:

➡️ Using explosives with reduced detonation velocity minimizes prefracture zones and decreases fines yield.
➡️ Optimizing blasting parameters allows controlled rock fragmentation and increases the output of marketable fractions.

For more information, see the article:

📌 Khokhlov S.V., Vinogradov Yu.I., Makkoev V.A., Abiyev Z.A. Effect of explosive detonation velocity on the degree of rock pre-fracturing during blasting. Mining Science and Technology (Russia). 2024;9(2):85-96. https://doi.org/10.17073/2500-0632-2023-11-177

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

Scientists studied the effect of hydraulic excavator pump wear on fuel overconsumption. During operation, increased clearances, reduced volumetric efficiency, and higher energy losses lead to excessive fuel consumption. The research aimed to determine the optimal pump service life considering growing fuel costs. The team developed a mathematical model of pump ownership costs, created simulation algorithms in Simulink-Matlab, and evaluated fuel consumption increases. Using the Komatsu PC2000-8 excavator as an example, the study demonstrated how main hydraulic pumps' technical condition affects fuel overconsumption. The results established correlations between fuel overconsumption and pump wear, plus derived an equation for optimal replacement timing to minimize total costs. The proposed fuel overconsumption indicator (calculated as the ratio between actual and nominal fuel consumption per 1 m³ of excavated material) enables data-driven determination of pumps' critical wear threshold. Implementation of this model can reduce combined pump ownership and fuel costs by up to 17%, accounting for pump condition deterioration rate, fuel prices, replacement costs, and mining-engineering conditions. All simulations were performed using Simulink-Matlab and Excel with specially developed calculation methodologies.

For more information, see the article:

📌 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


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#InEnglish #MST #MiningMachinery #HydraulicMiningExcavator #PumpTechnicalCondition #Hydraulics #Pump #Condition #Operation #Modeling #Leakage #Efficiency #Wear #Costs #Algorithm #Consumption #Overconsumption #OptimalServiceLife #Excavator #Pumps #ServiceLife #TechnicalCondition #Mining

🔍 Dry vs wet: unexpected results for Arkachan gold ore

Comparison Methods:
✔️ Dry Processing: Crushing (DKD-300) + Grinding (TsMVU-800) + Pneumatic Separation (POS-2000)
✔️ Wet Processing: Gravity Separation with GRG Test (ITOMAK-0.1)

📊 Key Data:

Gold Distribution:
✔️ 27.35% in -0.2+0.1 mm class;
✔️ 11.75% in -0.1+0.071 mm class;
✔️ 23.46% in -0.071 mm class;
→ Total 62.56% in particles <0.2 mm

Method Efficiency:
✔️ pneumatic Separation: 35.25% recovery at 1.8 t/h;
✔️ GRG Test: 73.91% recovery with grinding to 80% passing 0.071 mm.

GRG Test Results by Stage:
✔️ Stage 1 (-1 mm): 40.20% recovery;
✔️ Stage 2 (-0.315 mm): +14.46%;
✔️ Stage 3 (-0.071 mm): +20.88%.

Conclusions:
1. Dry methods are ineffective for fine-grained gold (<100 µm).
2. Gravity separation requires fine grinding but achieves high recovery.
3. Major losses are due to incomplete liberation of gold in pyrite.

🔗 Full Article:
Matveev А.I., Lebedev I.F., Vinokurov V.R., Lvov E.S. Comparative processing studies of the Arkachan deposit gold-bearing ores using dry separation and classical wet gravity separation methods. Mining Science and Technology (Russia). 2024;9(2):158-169. https://doi.org/10.17073/2500-0632-2023-10-168

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💬 What modern methods could improve dry processing for such ores?

#InEnglish #MST #Mining #Gold #Beneficiation #Crusher #Mill #Separator #DryProcessing #ParticleSize #Pyrite #Sample #Ore #Test #Method #Analysis #Stage #Class #Gravity #FineGrained #Particles #Concentrate #Grinding #Efficiency #Crushing #Recovery #Flowchart #Cycle #Fraction #Balance #Parameter #Mode #Degree #Impact #Abrasion #Subsample #Sludge #Pulp #SizeFraction #Feed #Tailings #Losses #Product #Intergrowths

P.S. For ores with fine-grained gold, classical gravity remains optimal. Are there alternatives?