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- Reagents (3)
- Acidophilic associations of iron-sulfur-oxidizing bacteria (2)
- Activated carbon (2)
- Bacterial leaching (2)
- Cinder (2)
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- Copper (2)
- Flotation concentrate (2)
- Geochemical activity (2)
- Gold (2)
- Gold ores (2)
- Gold. (2)
- Hydrometallurgy. (2)
- Microflora (2)
- Modeling (2)
- Uranium (2)
- Waste ores (2)
- Abrasive wear (1)
- Agglomeration (1)
- Alkaline basaltoids (1)
- Aqua regia (1)
- Ash (1)
- Ball mill performance. (1)
- Base of Schiff (1)
- Bidentate and monodentate compounds (1)
- Calcine (1)
- Calcite (limestone) (1)
- Carbide (1)
- Carbide phase (1)
- Carbon dumps (1)
- Carbonate solution. (1)
Articles 1 - 25 of 25
Full-Text Articles in Engineering
Prospects Of Development Of Deposits Of Nonmetallic Minerals Kyzylkum Such As Quartz Sands, A.U. Mirzaev, S.V. Pochtoviy, F.F. Istablaev, Sh.R. Kurbonova
Prospects Of Development Of Deposits Of Nonmetallic Minerals Kyzylkum Such As Quartz Sands, A.U. Mirzaev, S.V. Pochtoviy, F.F. Istablaev, Sh.R. Kurbonova
Gorniy vestnik Uzbekistana
Quartz sand plays essential role in the construction and glass industry, but construction organizations of Uzbekistan has not paid due attention to use quartz sand from domestic deposits. This article provides information about the prospects of the development of deposits of quartz sand in Kyzylkum, and also presents a project of a factory for the enrichment of Dzheroy sands with a capacity of 1 thousand tons per day of sand concentrate being developed by the Navoi branch of the Academy of Sciences of the Republic of Uzbekistan using a washing device as a washing machine pulsating columns.
Features Of Designs Of Nanosenses For The Oil Industry, A.E. Vorobev, Zhang Lianzi
Features Of Designs Of Nanosenses For The Oil Industry, A.E. Vorobev, Zhang Lianzi
Gorniy vestnik Uzbekistana
Development of design features of nanosensors for oil branch is shown. It is established that in modern nanosensors usually influence formation of a working signal as environment qualitative quantitative indices (values of temperature, pressure, speed of migration of fluids, contents of chemical elements, sizes рН, etc.) and the nature (predetermining properties), structure and extent (the geometrical sizes) of nanoparticles of sensitive elements which the studied environment influences, forming as a result this working signal. The basic design of nanosensors and the mechanism of their work is described. Distribution of nanosensors on classes depending on the principles and mechanisms of action …
Production Of Nitric Acid Ethers Of Cellulose In The Environment Of Low Concentrated Nitric Acid, H.Ch. Mirzakulov, T.T. Safarov, H.S. Beknazarov, G.O. Mamazhanov
Production Of Nitric Acid Ethers Of Cellulose In The Environment Of Low Concentrated Nitric Acid, H.Ch. Mirzakulov, T.T. Safarov, H.S. Beknazarov, G.O. Mamazhanov
Gorniy vestnik Uzbekistana
The article proposes a new method for producing cellulose nitrate esters by pretreatment of cellulose with low concentrated nitric acid. Optimal conditions for the esterifi- cation reaction have been developed. Some properties of mono- and di- and trisubstituted nitrates were studied: degree of substitution, solubility, degree of polymerization, IR spectra, X-ray diffraction patterns are given.
The Researching Some Containig Rocks Of Uranium Ores By Method Of The Thermal Analysis, K. Sanakulov, M.A. Kurbanov, U.Z. Sharafutdinov
The Researching Some Containig Rocks Of Uranium Ores By Method Of The Thermal Analysis, K. Sanakulov, M.A. Kurbanov, U.Z. Sharafutdinov
Gorniy vestnik Uzbekistana
The paper presents the results of comparative laboratorial testings physical and chemical properties ion-change resins: BD-706, BO – 020, BO-008, BD-709S, BD- 710M, А-560, А – 508, MS-2040. There are results present, that resins ВО-008, BD-709S, BD-710M and MS 2040 do not comply with requirements ОSТ 95.291-86. Kinet- ics of sorption uranium from sulphuric acid solution and carbonate solution presented, that resin А-560 has the best indexes.
Volcanism Role In Formation Of Burned Breeds On Brown-Coal Fields Southern Fergana Coal Basin, A.E. Vorobev, O.Sh. Shamshiev, N.T Tolobaeva
Volcanism Role In Formation Of Burned Breeds On Brown-Coal Fields Southern Fergana Coal Basin, A.E. Vorobev, O.Sh. Shamshiev, N.T Tolobaeva
Gorniy vestnik Uzbekistana
Are shown a volcanism role in formation of burned breeds on brown-coal fields of the Southern Fergana coal basin (Kyrgyzstan). So far burned breeds traditionally were considered as products of thermal transformation clay, clay алевритовых breeds, formed as a result of the underground fires of layers of coal. However, the complex of geological factors revealed recently when studying burned breeds, allows to assume their origin not only due to the underground fires of layers of coal, but also and a vol- canogenic and sedimentary way. Field works included supervision, drawing up litologo-petrographic, mineral and geochemical, structural and lithologic cuts with …
Gis-Based Approach For Sinkhole Occurrence Risk Mitigation In Urban Areas For Historic Wieliczka Salt Mine, Agnieszka Malinowska, Ryszard Hejmanowski
Gis-Based Approach For Sinkhole Occurrence Risk Mitigation In Urban Areas For Historic Wieliczka Salt Mine, Agnieszka Malinowska, Ryszard Hejmanowski
Gorniy vestnik Uzbekistana
The article presents the results of the definition of a new methodology for assessing the risk of flooding a shallow slotted mine, which was carried out on the square above the Wieliczka Salt Mine, which is a world heritage. Vertical stresses are estimated on the basis of the theoretical state of rock mass deformation in the area of test chambers. In addition, the risk for chambers indicated in the zone was calculated based on the theory of arctic pressure. The final stage of the study was spatial analysis, which led to the identification of chambers, potentially subject to the influence …
Development Of Technology For Processing Of Sulfide Ore Deposits Of Kokpatas And Daugyztau., K.S. Sanakulov, H. Ahmedov, I.S. Nurmukhamedov
Development Of Technology For Processing Of Sulfide Ore Deposits Of Kokpatas And Daugyztau., K.S. Sanakulov, H. Ahmedov, I.S. Nurmukhamedov
Gorniy vestnik Uzbekistana
In clause are given the short review on material structure persistent sulfide gold containing ores of deposits Kokpatas and Daugiztau. Also in clause the results of laboratory researches executed in SE "IMR" on study of mineral structure and enrichment of tests of ores of deposits Kokpatas and Daugiztau, and also pyro- and hydrometallurgical processing of the received concentrates are resulted. At flotation enrichment of ores an opportunity of application local reagents is considered. At cyaniding, the rest of alkaline processing the burned material of a mixed concentrates of the deposits, received from ores, Kokpatas and Daugiztau the extraction of gold …
Determination Of The Suitability Of Balance Ores "Almalyk Mmc" Jsc To Processing By Method Biodinstellation, M.G. Sagdieva, Sh. T. Khidirov, A.M. Mavzhudova, R.Ch. Omonov
Determination Of The Suitability Of Balance Ores "Almalyk Mmc" Jsc To Processing By Method Biodinstellation, M.G. Sagdieva, Sh. T. Khidirov, A.M. Mavzhudova, R.Ch. Omonov
Gorniy vestnik Uzbekistana
Over the 70 years of operation, Almalyk Mining and Metallurgical Combine (AGMK) has accumulated 155 million tons of waste ore and 1,350 million tons of flotation tailings of a copper-processing plant in the territory of the Almalyk region, which occupy huge areas and pose an environmental hazard. The objects of research at the Almalyk ore field were: A-4 blade (oxidized ore), A-7 (sulfide ore), 9a (oxidized ore), and open-pit ore of Kalmakyr deposit. The paper presents the microflora of all the studied dumps, from which the most active acidophilic associations of iron-sulfur-oxidizing bacteria were selected. Laboratory studies have been carried …
Researche Of Certain Host-Rocks Of Uranium Ores By The Method Of Thermal Analysis, O.F. Petukhov, B.T. Ruziev, U.Z. Sharafutdinov, Khalimov U.I.
Researche Of Certain Host-Rocks Of Uranium Ores By The Method Of Thermal Analysis, O.F. Petukhov, B.T. Ruziev, U.Z. Sharafutdinov, Khalimov U.I.
Gorniy vestnik Uzbekistana
The article presents the results of thermal analysis of samples of minerals – calcite (limestone), dolomite, magnesite and quartz, as well as their mixtures in the host rock of uranium ore. It has been established that thermal decomposition (dissociation) of calcite occurs in one stage at a temperature of 870°C, magnesite - in one stage at 6500° C, and dolomite - in two stages at 7300°C and at 9100°C. Thermal analysis of a sample of uranium ore showed that, as host rocks, it contains calcite, dolomite, and quartz.
Mechanism Of Fluid Migration In Reservoirs-Collectors, A.E. Vorobev, Z.T. Martin, K.A. Vorobev
Mechanism Of Fluid Migration In Reservoirs-Collectors, A.E. Vorobev, Z.T. Martin, K.A. Vorobev
Gorniy vestnik Uzbekistana
The mechanism of fluid migration in stratium - reservoirs is revealed. The relevance of the study of the mechanism of migration of fluids is determined by the high (up to 90%) water cut of recoverable oil. It has been established that the migration of water and oil is mainly influenced by the type, nature and parameters of their interaction with host rocks, which have different values of wettability and sorption capacity. The amount of wettability is influenced by the pH values of water and oil. It is shown that pores and capillaries often have a mixed type of wettability, depending …
Determination Of The Suitability Of Balance Ores "Almalyk Mmc" Jsc To Processing By Method Biodinstellation, M.G. Sagdieva, Sh. T. Khidirov, A.M. Mavzhudova, R.Ch. Omonov
Determination Of The Suitability Of Balance Ores "Almalyk Mmc" Jsc To Processing By Method Biodinstellation, M.G. Sagdieva, Sh. T. Khidirov, A.M. Mavzhudova, R.Ch. Omonov
Gorniy vestnik Uzbekistana
Over the 70 years of operation, Almalyk Mining and Metallurgical Combine (AGMK) has accumulated 155 million tons of waste ore and 1,350 million tons of flotation tailings of a copper-processing plant in the territory of the Almalyk region, which occupy huge areas and pose an environmental hazard. The objects of research at the Almalyk ore field were: A-4 blade (oxidized ore), A-7 (sulfide ore), 9a (oxidized ore), and open-pit ore of Kalmakyr deposit. The paper presents the microflora of all the studied dumps, from which the most active acidophilic associations of iron-sulfur-oxidizing bacteria were selected. Laboratory studies have been carried …
Development Of Technology For Processing Of Sulfide Ore Deposits Of Kokpatas And Daugyztau., K.S. Sanakulov, H. Ahmedov, I.S. Nurmukhamedov
Development Of Technology For Processing Of Sulfide Ore Deposits Of Kokpatas And Daugyztau., K.S. Sanakulov, H. Ahmedov, I.S. Nurmukhamedov
Gorniy vestnik Uzbekistana
In clause are given the short review on material structure persistent sulfide gold containing ores of deposits Kokpatas and Daugiztau. Also in clause the results of laboratory researches executed in SE "IMR" on study of mineral structure and enrichment of tests of ores of deposits Kokpatas and Daugiztau, and also pyro- and hydrometallurgical processing of the received concentrates are resulted. At flotation enrichment of ores an opportunity of application local reagents is considered. At cyaniding, the rest of alkaline processing the burned material of a mixed concentrates of the deposits, received from ores, Kokpatas and Daugiztau the extraction of gold …
Comprehensive Management Countermeasures To Coal Mining Subsidence Areas, Bingnan Hu
Comprehensive Management Countermeasures To Coal Mining Subsidence Areas, Bingnan Hu
Gorniy vestnik Uzbekistana
The ecological environment in mining area had been damaged seriously by mining subsidence, which made directly influence on the sustainable development of mining industry. The current situations and existing problems of the coal mining subsidence areas in china were analyzed. Three different management stages are divided, including pre-mining, during-mining, and post-mining, based on mining time sequence. After analysis, effective comprehensive management countermeasures were provided systematically for subsidence control, combined with the related laws, mining technology and management technology on coal mining subsidence areas.
Comparative Study Of The Structure Of Castings Fromwear Resistant Chuguns, Ganiyev Y.U., Jumaev Akhmat, Komilov J.M., Khudoyberdiyev R.Kh.
Comparative Study Of The Structure Of Castings Fromwear Resistant Chuguns, Ganiyev Y.U., Jumaev Akhmat, Komilov J.M., Khudoyberdiyev R.Kh.
Gorniy vestnik Uzbekistana
In this article, white wear-resistant cast irons of the grades 280H29NL and 300H32N2M2TL are investigated, the chemical compositions and their structures are compared. It has a composition close to eutectic, but is prone to brittle chipping. At high magnifications in the metal base, the places of chipping are found, and where the chipping has not yet passed, gray sulphides are clearly visible. The carbide sizes of the cast irons under investigation vary widely from 8.6 μm to 31 μm.
Improvement Of Scheme Of Drug Training At Hydrometallurgical Plant №2, K. Sanakulov, Ergashev Ulugbek Abdurasulovich, Tkachenko Evgeniy, Vasilyonok O.P.
Improvement Of Scheme Of Drug Training At Hydrometallurgical Plant №2, K. Sanakulov, Ergashev Ulugbek Abdurasulovich, Tkachenko Evgeniy, Vasilyonok O.P.
Gorniy vestnik Uzbekistana
The article discusses the issues of improvement of grinding schemes, aimed at improving the productivity of ore preparatory redistribution on the example of the current production of GMZ-2. Based on the analysis of the results of testing mill blocks, the reserves for increasing their productivity were revealed. The results of industrial tests and the introduction of an improved scheme on an industrial scale.
Analysis Of Factors Determining Efficiencyhead Leaving Stain Rays, A.E. Vorobev, Чекушена Т.В., Tcharo X
Analysis Of Factors Determining Efficiencyhead Leaving Stain Rays, A.E. Vorobev, Чекушена Т.В., Tcharo X
Gorniy vestnik Uzbekistana
The efficiency of irrigation of stacks is an important component, ensuring the intensification of the heap leaching process in the extraction of metals from poor ores. The study of the irrigation process in heap leaching should be aimed at improving the economic and technological efficiency of the applied irrigation methods. In this regard, the study of the factors affecting the evaporation of leaching solutions in HL will make it possible to make new and improved decisions regarding the devices and methods for the supply of solutions. The influence of coarseness and agglomeration on irrigation efficiency was also considered.
History And Prospects Of Gamma-Activation Analysis Of Muruntau Mine, Melnikov L.N., Mingboyev X.S., Yermakov K.S.
History And Prospects Of Gamma-Activation Analysis Of Muruntau Mine, Melnikov L.N., Mingboyev X.S., Yermakov K.S.
Gorniy vestnik Uzbekistana
he article describes the history of the development of a new type of analysis of geological samples for gamma-activated gold method. The Central Mining Administration of the Navoi Mining and Metallurgical Combine announces the creation of a gamma-activated analytical laboratory at the Muruntau deposit. The prospect of gamma-activated analysis of gold, silver and rare metals in Uzbekistan and around the world.
Conceptual Bases For Solving The Problems Of Processing Technological Raw Materials, K.S. Sanakulov
Conceptual Bases For Solving The Problems Of Processing Technological Raw Materials, K.S. Sanakulov
Gorniy vestnik Uzbekistana
Currently in the world, in the mining and metallurgical industry there is a forced need to reduce the share of processing ores and increase the share of previously accumulated industrial wastes. A phased concept of the use of man-made waste is proposed. At the first stage, the existing industrial wastes are considered as resources and are subject to complete processing with the minimum amount of new waste. At the second stage, the task is to develop non-waste technologies. The example of Uzbekistan (Navoi and Almalyk MMC) shows one of the possible options for the integrated use of industrial waste for …
New Method For Cleaning And Filtration Of Liquid Sulfur, Ashurov O.T., Tureyev F.E., Karimov A.K.
New Method For Cleaning And Filtration Of Liquid Sulfur, Ashurov O.T., Tureyev F.E., Karimov A.K.
Gorniy vestnik Uzbekistana
The article presents the results of sulfur purification research with an inorganic adsorbent released as waste during the production of vanadium pentoxide from spent vanadium catalyst. High purification of liquid sulfur from organic impurities, ash and acids is achieved by treating the molten sulfur with an inorganic adsorbent, followed by separating the purified sulfur by filtration. The silicate base of the spent vanadium catalyst is used as the inorganic sorbent after vanadium pentoxide is removed from it. The consumption of the silicate base of the spent vanadium catalyst after removal of vanadium pentoxide from it is regulated in the range …
Development Of A Technology For Obtaining An Affined Paladium Powder From Fulfilled Electrolytes, A.Kh. Khursanov, A.S. Khasanov, B.R. Vohidov
Development Of A Technology For Obtaining An Affined Paladium Powder From Fulfilled Electrolytes, A.Kh. Khursanov, A.S. Khasanov, B.R. Vohidov
Gorniy vestnik Uzbekistana
The article discusses the processing of waste solutions of the AGMK copper plant, and as a result of research, a technology has been developed for producing refined palladium in powder and in ingot. Also, cleaning methods for reducing impurities in the composition of refined palladium are given. The results of aqua regia dissolution, advantages, leaching parameters are analyzed and methods for the selective precipitation of palladium from solutions are given, the maximum degree of purification of palladium using low-cost and simple technologies is substantiated, and to achieve high economic performance.
Development Of Self-Ignition Mechanisms And Conditions Carbon Deposits And Terricons, A.E. Vorobev, R.B. Dzhimieva
Development Of Self-Ignition Mechanisms And Conditions Carbon Deposits And Terricons, A.E. Vorobev, R.B. Dzhimieva
Gorniy vestnik Uzbekistana
In this article, the mechanisms of spontaneous combustion of coal and coal-bearing rocks, as well as physical and mathematical modeling of the development of processes and the source of spontaneous combustion in the local zone of the coal-rock massif, are studied. predict the occurrence and prevention of these very dangerous phenomena.
Analysis Of Ash Fireplant Slates Of Deposit Sangruntau And The Possibility Of Their Enrichment, K.S. Sanakulov, O.F. Petukhov, B.T. Ruziev, U.Z. Sharafutdinov
Analysis Of Ash Fireplant Slates Of Deposit Sangruntau And The Possibility Of Their Enrichment, K.S. Sanakulov, O.F. Petukhov, B.T. Ruziev, U.Z. Sharafutdinov
Gorniy vestnik Uzbekistana
This article provides laboratory research data on the analysis of the ash of combustible shale from the Sangruntau deposit and the possibility of their enrichment. Magnetic enrichment of the ash of combustible shale was carried out in order to determine the yield of the magnetic fraction, determine the chemical composition of the products of magnetic separation, determine the extraction and the enrichment factor for the main elements. When gravitational enrichment of the ash of combustible shale gold almost completely goes into the gravity concentrate. Gravitational enrichment of rhenium, vanadium, copper, zinc, uranium does not occur.
Monometric Mapping Flotation Process At Mikheevskiy Furniture Factory, Yu.G. Nikitina, I.P. Poyezhaev, G.A. Myrzabek, R.A. Musaev
Monometric Mapping Flotation Process At Mikheevskiy Furniture Factory, Yu.G. Nikitina, I.P. Poyezhaev, G.A. Myrzabek, R.A. Musaev
Gorniy vestnik Uzbekistana
An integrated study on the sandstone hosted uranium deposits on the base of hydrodynamic simulation has been carried out to define optimal field opening schemes. The reservoir simulation and mass-transfer models for selected field opening schemes, ways of optimizing existing facilities and building of optimized scheme are the main results of this investigation.
Prospects Of Chatkalo-Kuramin's Diamond Presence Zones And Correlated Territories, Uzbekistan, A.M. Azizov, R.G. Yusupov, S.D. Fatkhullaev
Prospects Of Chatkalo-Kuramin's Diamond Presence Zones And Correlated Territories, Uzbekistan, A.M. Azizov, R.G. Yusupov, S.D. Fatkhullaev
Gorniy vestnik Uzbekistana
The Middle and South Tien Shan as orogenic regions with accompanying sharp changes in temperature and pressure (Koshmansai diatreme) are characterized by conditions for the formation of diamond manifestations. Prospects of Uzbekistan for radical manifestations of diamonds are assigned to the activated regions of the Archean (?) With manifestations of Lower Proterozoic eclogite-like formations with a complex of associated alpinotype ultrabasites, as well as alkaline intraplate basaltoids, K1.
Synthesis And Spectroscopic Research Coordination Compounds Of Nickel (Ii) And Copper (Ii) With Bases Of Shiff, Z.T. Karimov, S.I. Nurnazarov
Synthesis And Spectroscopic Research Coordination Compounds Of Nickel (Ii) And Copper (Ii) With Bases Of Shiff, Z.T. Karimov, S.I. Nurnazarov
Gorniy vestnik Uzbekistana
The Ligand is product of condensation salicyl aldehyde with ortho aminophenol. On the basis of the resulted Ligand, synthesed coordinated compound of Cu(II) and Ni(II). Newly synthesized complexes investigate the structural formula of IR, PR, EPR of the spectroscopic researches.