scholarly journals Modeling the Process of Thawing of Tailings Dam Base Soils by Technological Waters

2021 ◽  
Vol 11 (23) ◽  
pp. 11089
Author(s):  
Nataliya Yurkevich ◽  
Irina Fadeeva ◽  
Elizaveta Shevko ◽  
Alexey Yannikov ◽  
Svetlana Bortnikova
Keyword(s):  
Chemical Interaction ◽  
Industrial Water ◽  
Cold Climates ◽  
Tailing Dump ◽  
Environmental Consequences ◽  
Diamond Mining ◽  
Tailing Dumps ◽  
Processing Plants ◽  
Permafrost Soils ◽  
Thermophysical Modeling

The storage of wastes from mining and mineral processing plants in the tailing dumps in regions with cold climates has a number of environmental consequences. Interactions of water with tailings in cold climates often lead to the thawing of permafrost soils, formation of technogenic thawing zones, and leakage of drainage waters. In the case of fault zones development in these areas, technogenic solutions are often filtered outside the tailing dump, promoting further development of filtration channels. In order to prevent leakage of solution from tailing dumps over time, it is necessary to determine the thawing zones and prevent the formation of filtration channels. In the case of the formation of a filtration channel, it is necessary to know what rate of rock thawing occurred near the formed filtration channel. In this study, for the tailing dump of a diamond mining factory, we calculated two exothermic effects: (1) due to physical heating of dump rock by filtering industrial water with temperatures from 2 to 15 °C through the rock; and (2) due to the chemical interaction of industrial water with the dam base rock. The amount of energy transferred by the water to the frozen and thawed rock over 10 years was calculated using thermophysical modeling and was 207.8 GJ and 8.39 GJ respectively. The amount of energy that the rock received during the ten-year period due to dissolution of the limestones and equilibration of solutions was calculated using thermodynamic modeling and was 0.37 GJ, which is 4.4% of the average amount of energy, expended on heating the thawed rock (8.39 GJ).

scholarly journals Geochemical Risks of Diamond Mining in Siberia

2020 ◽  
Vol 5 (1) ◽  
pp. 4
Author(s):  
Yana Legostaeva ◽  
Anna Gololobova ◽  
Vladimir Popov
Keyword(s):  
Chemical Elements ◽  
Particle Size Analysis ◽  
Emission Spectrometry ◽  
Size Analysis ◽  
Spectrophotometric Methods ◽  
Industrial Sites ◽  
Diamond Mining ◽  
Mobile Forms ◽  
Geological Conditions ◽  
Processing Plants

Geochemical risk is caused by the release of hazardous chemicals to the earth surface. Primary diamond deposits are located in difficult mining and geological conditions. They represent natural geochemical anomalies associated with the mineral composition of rocks and groundwater, which contain a number of impurity elements with high toxic properties (Tl, Di, As, Cd, Hg), and increased concentrations of heavy metals (Cu, Zn, Pb, Ti, V and others). The paper presents the physical-geographical and mining-geological conditions of the diamondiferous region, where three large mining and processing divisions operate: Udachninsky, Aikhalsky and Nyurbinsky. pH, organic matter (humus), total nitrogen, and physical clay were identified in the study samples, by using potentiometric, photoelectric colorimetric, spectrophotometric methods, and pipette method for particle size analysis. Gross and mobile forms of trace elements were determined by atomic absorption and emission spectrometry. The groups of elements were identified that determined the natural and man-made anomalies. The accumulation of Cr, Ni, and Co determines the influence of kimberlite magmatism in general. Cu, Sr, and Li are accumulated in the soils of the Daldyn-Alakit diamond-bearing region. Increased concentrations of Mn and Cu are typical in the soils of the Sredne-Markhinsky diamond-bearing region. An assessment of the ecological and geochemical state of the study areas was carried out according to the indicator of total pollution (Zc), which is the sum of the excess of the concentration coefficients of chemical elements accumulating in anomalies. Areas of pollution and zones of the greatest risk are localized, which occupy up to 75% of the total area of industrial sites. They confined to quarry-dump complexes and to areas of impact of tailing dumps of processing plants.

Estimation of tailings volumes using electric tomography, frequency profiling and aerophotography

2020 ◽  
Author(s):  
Yuri G. Karin ◽  
◽  
Svetlana B. Bortnikova ◽  
Natalia V. Yurkevich ◽  
◽  
...  
Keyword(s):  
Tailing Dump ◽  
Minimum Information ◽  
Tailing Dumps

Methodological recommendations are given for constructing tailing dump models using the example of tailing dumps in the Kemerovo Region according to electric tomography, frequency profiling, and orthophotography. The combination of the three methods allows you to obtain the necessary minimum information for estimating the volumes of substances at the studied objects.

scholarly journals Recycling Prospects for Saponite-Containing Water at Diamond Processing Plants in Arkhangelsk Region, Russia

2018 ◽  
Author(s):  
Valentine A. Chanturiya ◽  
Vladimir G. Minenko ◽  
Dmitriy V. Makarov ◽  
Olga V. Suvorova ◽  
Ekaterina A. Selivanova
Keyword(s):  
Mechanical Properties ◽  
Separation Method ◽  
Electrochemical Separation ◽  
Arkhangelsk Region ◽  
Diamond Mining ◽  
Physico Chemical ◽  
Processing Plants ◽  
Diamond Processing ◽  
Technogenic Waters

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 mechanical properties, is shown. The possible directions of realization of saponite and products of its modification in various branches of industry are considered.

scholarly journals Toxic element distribution analysis in tailing technozems of the lead-zinc deposits in Eastern Transbaikalia

2021 ◽  
Vol 895 (1) ◽  
pp. 012001
Author(s):  
B N Abramov ◽  
T G Tsyrenov
Keyword(s):  
Toxic Elements ◽  
Element Distribution ◽  
Toxic Element ◽  
Distribution Analysis ◽  
Tailing Dump ◽  
Zinc Deposit ◽  
Tailing Dumps ◽  
Eastern Transbaikalia ◽  
Lead Zinc ◽  
Zinc Deposits

Abstract An analysis of chemical element distribution in technozems of tailing dumps of the lead-zinc deposits of Eastern Transbaikalia is carried out. The potential toxicity of tailing mine technozems was calculated. A comparative analysis of the toxic element concentrations in the technozems of the lead-zinc deposit tailing dumps has revealed significant differences in the concentrations of toxic elements. It was found that the highest concentrations of toxic elements of the first class of hazard (As, Pb, Zn, and Cd) are characterized by the technozems of the Blagodatsky Deposit, while the lowest concentrations by those of the Khapcheranginsky Deposit. It has been established that the greatest ecological hazard is posed by the tailing dump of the Blagodatsky lead-zinc deposit, whereas a significantly smaller one by tailing dumps of the Khapcheranginsky and Novo-Shirokinsky deposits.

scholarly journals Complex Processing of Saponite Waste from a Diamond-Mining Enterprise

2021 ◽  
Vol 11 (14) ◽  
pp. 6615
Author(s):  
Olga Zubkova ◽  
Aleksey Alexeev ◽  
Arseniy Polyanskiy ◽  
Kirill Karapetyan ◽  
Olga Kononchuk ◽  
...  
Keyword(s):  
Environmental Damage ◽  
Secondary Product ◽  
Yield Increase ◽  
The North ◽  
Diamond Mining ◽  
General Chemical ◽  
Processing Plants ◽  
European Part Of Russia ◽  
Filtration Properties ◽  
Enrichment Process

The solution of the sludge utilization problem and yield increase at processing plants have great importance today all over the world. Disasters associated with the tailings dams failures have madeus develop technologies of tailings sludge utilization as a commercial product, reducing the environmental damage on the regions of mineral extraction. This research aimed to provide new data, methods and an analytical approach to solve the saponite sludge accumulation problem on mining enterprises with silicate coagulant to increase the rate of cycle water clarification for the enrichment process and the recycling of sludge to reduce its hazardous effect. Samples were taken in the deposit located in the north of the European part of Russia, where diamond bearing ore contain montmorillonite minerals, mostly saponite, which is considered to be a perspective secondary product. The content of this mineral in the sludge is above 20 wt.%. Saponite is a clay mineral with the general chemical formula (Ca,Na)0.3(Mg, Fe2+)3(Si, Al)4O10(OH)2·4H2O. The mineral has high adsorption, ion exchange, and catalytic and filtration properties; due to the developed diffuse layer, saponite particles are highly stable in an aqueous medium—the resulting suspension is highly stable and has slow sedimentation. During the research, a positive effect on the sedimentation process of clay saponite particles was established, due to the introduction of a coagulant containing 70% tricalcium silicate, at a dosage of 2 g/dm3 coagulant; the degree of purification of water containing the saponite clay suspension is 99%. The condensed sediment after the thermal drying and with the limestone addition can be used again as a coagulant or secondary product with enhanced properties;therefore, the sludge will be processed, and not stored.

scholarly journals MODELIND OF THE PROCESS OF DISSOLUTION OF SOILS IN THE BASE OF A HYDRAULIC STRUCTURE BY ATMOSPHERIC WATER

2021 ◽  
Vol 2 (3) ◽  
pp. 10-15
Author(s):  
Kristina Y. Tulisova ◽  
Tatyana A. Kuleshova ◽  
Alexey M. Yannikov ◽  
Nataliya V. Yurkevich
Keyword(s):  
Hydraulic Structure ◽  
Specific Conductivity ◽  
Atmospheric Water ◽  
Tailing Dump ◽  
Dam Foundation ◽  
Circulating Water ◽  
Rate Of Dissolution ◽  
Tectonic Zones ◽  
Permafrost Soils ◽  
Flow Through

The article presents the results of a flow-through experiment simulating the process of dissolution of soils of the foundation of a dam of a hydraulic structure by groundwater. The object of the study is the tailing dump of the concentrating plant, during the operation of which the permafrost soils of the coastal abutments of the enclosing dam thawed, significant volumes of circulating water leaked into the shunting tank located below. The development of filtration channels in fractured tectonic zones that make up the near-rock massif does not stop. Upon completion of the experiment, which lasted 20 weeks, an array of measured parameters of solutions at the exit from the columns was obtained: pH, specific conductivity and elemental composition. The data obtained made it possible to estimate the rate of dissolution of the soils of the dam foundation.

Diamond Mining at Theindaw, Myanmar

2019 ◽  
Vol 36 (7) ◽  
pp. 594-595
Author(s):  
Tay Thye Sun ◽  
U Nyunt Htay ◽  
Thet Tin Nyunt
Keyword(s):  
Diamond Mining

SCIENTIFIC APPROACHES TO THE DEVELOPMENT OF GUIDELINES FOR GREENING THE STEPPE AGRO-TECHNOLOGIES BASED ON SMART DIGITAL AGRICULTURE

2020 ◽  
Author(s):  
Y.A. Gulyanov ◽  
Keyword(s):  
Digital Technology ◽  
Agricultural Technologies ◽  
Environmental Consequences ◽  
Digital Agriculture

The article discusses the scientific approaches to the development of promising ways of greening steppe agricultural technologies aimed at the leveling of a trench heterogeneity with the use of intelligent digital technology. In order to minimize negative environmental consequences, the necessity of carrying out a complex of rehabilitation agrotechnical measures that have a soil-restoring and environmentimproving effect is justified.

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