Mining
Vorobyev A.E., Anikin A.B., Moldabayeva G.Zh.
Authors | Vorobyev A.E., Anikin A.B., Moldabayeva G.Zh. |
Author´s information | Russian university of nations friendship, Moscow, Russia Vorobyev A.E., Dr.Tech.Sci., head of cathedra, fogel_al@mail.ru “Gasprom” JSC Anikin A.B., chif manager, department of project The mining institute named after D.A. Kunayev, Almaty Moldabayeva G.Zh., Dr.Tech.Sci., main scientific worker |
Summary | The ways to increase mineral reserves at “Vasilevsky Mine” CJSC are discussed. Updating of technological processes at the gold extraction factory and start of gold heap leach are proposed as promising projects. Measures to increase effectiveness of the mine’s mineral resource management are shown. System AGR (automatization of geological surveying works) – information platform for acquisition, holding and administration by geological data was used at geological surveying. It is allowed to optimize process of documentation of geological exploration course, form electronic data base, prepare reporting documents, and avoid repeat of some operations. From geological position it is necessary to continue drilling of allocated blocks with concentration of borehole network that allows carrying out specified blocking of gold-bearing mineral reserves. Then it is necessary to design the technological process, and conduct pilot-production testing of model block, then to specify the project and provide the commercial development of the deposit. |
Key words | gold-bearing ore, reserves, leaching, geological surveying, mine, deposit, automated system |
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Yakovlev V.L., Kulniyaz S.S., Karmaev G.D.Perspectives of steeply inclined conveyor lifting use
Title | Perspectives of steeply inclined conveyor lifting use |
Authors | Yakovlev V. L., Kulniyaz S.S., Karmaev G.D. |
Author´s information | The mining institute of Ural Dep. of Russian Academy of Sciences, Yekaterinburg, Russia Yakovlev V. L., Dr. Tech. Sci., corresponding members of Russian academy of sciences, main scientific worker Karmaev G.D., Cand. Tech. Sci., leading scientific worker The Karaganda State Technical University Kulniyaz S.S., Dr. Tech. Sci., associate professor, kulnyaz@mail.ru |
Summary | Results on researches of semiportable crashing-transfer installations working on opencast mine of Poltava ore-dressing and processing enterprise, and technical-economic parameters of steeply inclined conveyor installed in opencast mine of Kostomukshskij ore-dressing and processing enterprise are presented in the article. Currently the crush-and-conveyor systems development proceeds by two trends: forming of crushing-and-conveying complexes in which structure there are powerful movable crushers, and making steeply inclined conveyors. The efficiency of automobile-conveying transport work increases at using semi-stationary and movable crushing-and-transshipping units. Such units consist of 3-4 large modules therefore they can be in the shortest time transferred to a new concentration horizon and enabled at increasing the distance of rock mass transportation. The results of studies showed that with increasing transportation length the transportation cost increases proportionally, and at constant transportation length the transport work efficiency is prior or can increase under certain conditions. The results of studies carried out at the open pit of the Kostomuksha ore-dressing and processing enterprise prove high economic efficiency of the cycle-and-flow technology when semi-stationary crushing-and-transshipping units jointly with a steeply inclined conveyor are used. In the course of studies the effectiveness of a steeply inclined conveyor use was found at rock mass lifting height of 100-150 m. |
Key words | mining, cycle-and-flow technology, automobile-conveyor transport, inclined elevator, crushing-and-transshipping unit, conveyor belt, open pit contour, site |
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Minerals benefication
Karimova L.M., Karimov R.M., Kairalapov E.T.Addition and experimental verification of probabilistic model for off-balance copper sulfide ore grinding
Title | Addition and experimental verification of probabilistic model for off-balance copper sulfide ore grinding |
Authors | Karimova L.M., Karimov R.M., Kairalapov E.T. |
Author´s information |
”Innovation” LTD, Karaganda Karimova L.M., Cand.Chem.Sci, leading scientific worker, lutsia.08@mail.ru Karimov R.M., engineer-programmer Kairalapov E.T., engineer-researcher |
Summary | The paper presents checking of theoretical model of grinding by data of processing off-balance copper sulfide ore mono-fraction in the laboratory ball mill at a waterfall mode. It is shown that the adequacy of the probabilistic model is improved by using adaptation coefficient of grinding rate constant through the data processing for the largest fraction. It is established necessity to improve the model in the laboratory wet milling regime by taking into account the volume portion of water in the mixture with bodies which are grinded and grinding body. The algorithm for fractions calculation at the grinding process with the introduction of the original data based on characteristics of the ore and grinding balls, as well as the parameters and operation mode of the mill was developed. This checking applied to the probabilistic model of grinding was carried out first time and generally it indicates the severity of used model. |
Key words | ball mill, off-balance ore, grinding, copper sulfide ore, mathematical modeling |
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Metallurgy
Kantemirov M.D., Naymanbayev М.А., Ulasyuk S.М., Abisheva А.S.Thermogravimetric researches of calcinated soda influence on reducibility of titaniferous magnetite concentrate
Title | Thermogravimetric researches of calcinated soda influence on reducibility of titaniferous magnetite concentrate |
Authors | Kantemirov M.D., Naymanbayev М.А., Ulasyuk S.М., Abisheva А.S. |
Author´s information |
“Center of Earth sciences, metallurgy and ore benefication” JSC, lab of titanium and rare refractory metals, Almaty Kantemirov M.D., Cand.Tech.Sci., leading scientific worker Naymanbayev М.А., Cand.Tech.Sci., head of lab, madali_2011@inbox.ru Ulasyuk S.М., scientific worker Abisheva А.S., junior scientific worker |
Summary | Influence of the calcinated soda additives on phase transformations at solid phase reduction of titaniferrous magnetite concentrate wais studied in the interval of temperatures 200-1450°С. Thermogravimetric researches of process of titaniferrous magnetite concentrate carbothermic reduction at the ratio of Fe/С=0,25, in flux-free mode and with addition of the calcinated soda showed catalytic influence of soda. So the temperature of the rapid stage of reduction decreased from 790 down to 658°С, i.e. for 132°С, and the depth of iron metallization considerably increased. It is shown that at the increase of calcinated soda consumption (Na2O) up to 10% and at consumption of 18,3% of semicoke all of solid phase iron metallization process flows within an interval 672-956°С, thereupon joint reduction of iron and titanium from a slag phase and successive melting of eutectic compositions of slag phase take place. It is established that the calcinated soda decreases reducibility of TiO2 down to lower oxides and binds it into more hard reducing sodium titanates. |
Key words | titaniferrous magnetite concentrate, solid phase reduction, soda calcinated, semicoke, charge, thermoeffects, sodium, sodium ferrite |
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Koizhanova A.K., Osipovskaya L.L., Darisheva A.M., Yerdenova M.B.Development of biotechnology for gold recovery from resistant ores and slimes by using mineral acids
Title | Development of biotechnology for gold recovery from resistant ores and slimes by using mineral acids |
Authors | Koizhanova A.K., Osipovskaya L.L., Darisheva A.M., Yerdenova M.B. |
Author´s information |
“Center of Earth sciences, metallurgy and ore benefication” JSC, lab of noble metals, Almaty Koizhanova A.K., Cand.Tech.Sci., senior scientific worker, aigul_koizhan@mail.ru Osipovskaya L.L., Cand.Biol.Sci., senior scientific worker Darisheva A.M., Cand..Chem.Sci., head of dep. Intellectual property and international cooperation Yerdenova M.B., engineer |
Summary | Possibility in principle of gold recovery from resistant ores and slimes of one of Kazakhstani deposits (gold content – 5.6 and 2.6 g/t respectively) is discussed in the article. Bioleaching method was used in the investigation for resistant sulfide ores and production’s waste processing. This method has significant advantages, because it is characterized by simple process scheme due to cancellation of high temperatures and pressures and more complete opening of ores by bio-reagents. Complex inorganic solvent (H2SO4) with an organic additive (timber fungi of Phellinus genus) were used in the experiments for gold recovery. Experiments showed that at bioleaching of slime samples with sulfuric acid and an organic additive (timber fungi of Phellinus genus) – 75,0% of Au was extracted into solution at 20°C. At bioleaching of samples of Akbakaj resistant sulfide gold-bearing ores – 70,0% of Au was extracted into solution at same conditions. Thus, the presented results of the studies show that the introduction of organic additives into the solution of sulfuric acid intensifies the leaching of gold without using high temperatures and the pressure. |
Key words | slime, sulfuric acid, Phellinus genus fungi, resistant sulfide ores, gold-bearing ores, bioleaching, organic additives |
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Kolesnikov A.S.Thermodynamic modelling of ferrum silicides (FemSin) formation in SiO2-Fe3C-C system
Title | Thermodynamic modelling of ferrum silicides (FemSin) formation in SiO2-Fe3C-C system |
Authors | Kolesnikov A.S. |
Author´s information | Southern Kazakhstan state university named M, Auezov, Shymkent Kolesnikov A.S., Cand.Tech.Sci., head of cathedra, kas164@rambler.ru |
Summary | In given article studies are directed on development of resource and energy saving technologies for production of ferrosilicon with reduction down to minimum consumption of deficit components of raw materials such as – coke and iron shaving, as well as, on decision of the ecological problem – on recycling of zinc industry waste. Thermodynamic researches of ferrosilicon’s different modifications (FeSi, Fe5Si3, Fe3Si,) formation in SiO2-Fe3C-C system аre presented. Principle possibility of ferrosilicium formation at Fe3C and SiO2 interaction in the presence of carbon at electrothermal smelting is shown. Influence of the temperature on distribution of iron (Fe) and silicon (Si) in temperature interval 1700-2500К at pressure 0,1 MPa was investigated. The optimum temperature intervals for iron and silicon distribution in ferrosilicon are found. Chemical equations of the interactions in the system are found, in which all formed under different temperature intervals elements and compounds are shown. |
Key words | ferroalloy, ferrosilicon, iron silicide, iron carbide, forge-rolling clinker, electrosmelting, thermodynamic modelling |
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Lokhova N.G., Naimanbayev M. A., Baltabekova Z.A., Dukembayeva A.Z., Tashyta G.N.Research of acid open of product from phosphogypsum conversion
Title | Research of acid open of product from phosphogypsum conversion |
Authors | Lokhova N.G., Naimanbayev M. A., Baltabekova Z.A., Dukembayeva A.Z., Tashyta G.N. |
Author´s information | “Center of Earth sciences, metallurgy and ore benefication” JSC, lab of titanium and rare refractory metals, Almaty Lokhova N.G., scientific worker Naimanbayev M. A., Cand.Tech.Sci., head of lab, madali_2011@inbox.ru Baltabekova Z.A., junior scientific worker Dukembayeva A.Z., engineer Tashyta G.N., Cand,Chem.Sci., head of chem. analyt. lab. |
Summary | The results of physicochemical studies of technical calcium carbonate – the product of phosphogypsum conversion – waste of phosphorites processing are presented in the article. It is established that virtually all of the calcium corresponds carbonate, the impurity phases are quartz and a trace amount of gypsum. Rare earth elements are a part of technical calcium carbonate in the form of phosphate. The method of electronic probe microanalysis showed that REE phosphates, iron and calcium carbonate form a separate phases, which suggests a lack of difficulty in the leaching of REE. The effect of nitric acid concentration, ratio of S:L, time length of leaching of rare earth elements from phosphogypsum conversion product is investigated. It is found that the ratio of S:L has the greatest effect on the leaching of rare earth elements from technical calcium carbonate. It was determined that the extraction of rare earth elements into the solution up to 95-99% is achieved under the conditions: the concentration of acid 17-18%; S:L = 1:8 ÷ 10; duration 60 min. |
Key words | phosphogypsum, rare earth elements, technical calcium carbonate, nitric acid, leaching |
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Naimanbaev М.А., Ulasyuk S.M., Onaev M.I., Ultarakova A.A., Dzhurkanov Zh.K.Study of composition of products of ilmenite concentrate electrosmelting with manganous flux additive
Title | Study of composition of products of ilmenite concentrate electrosmelting with manganous flux additive |
Authors | Naimanbaev М.А., Ulasyuk S.M., Onaev M.I., Ultarakova A.A., Dzhurkanov Zh.K. |
Author´s information | “Center of Earth sciences, metallurgy and ore benefication” JSC, lab of titanium and rare refractory metals, Almaty Naimanbaev М.А., Cand.Tech.Sci., head of lab, madali_2011@inbox.ru Ulasyuk S.M., scientific worker Onaev M.I., Cand.Tech.Sci., leading scientific worker Ultarakova A.A., Cand.Tech.Sci., scientific worker Dzhurkanov Zh.K., engineer |
Summary | The thermodynamic parameters of MnO reduction in presence of carbon was calculated. It is shown that at high >1500°С temperatures formation of manganese carbides is more likely than metal. It is established that in presence of manganese oxide reduction of iron oxides flows fuller and deeper. Titanic slags containing 86,1-84,5% TiO2 and 2,21-2,31% FeO are obtained at addition of 3-4,5% of MnO, and temperature of smelting decreases from 1650 down to 1550°С. The optimal consumption of manganese oxide is 3% from weight of charge. At charge smelting at the temperature of 1650°С the slag containing 85,9% TiO2 and 2,25% FeO, 4,29% MnO and metal containing 97,6% Fe, 1,07% С, 0,142% S and 0,04% Mn is obtained, and at 1550°С the slag containing 86,1% TiO2 and 2,21% FeO, 4,36% MnO and metal containing 97,8% Fe, 1,82% С, 0,145% S and 0,05% Mn is obtained. Obtained slags consist of anosovite, anatase, and small amount of pirofanite, pseudobrооkite, and quartz. |
Key words | reduction electrosmelting, ilmenite concentrate, fluxing additive, charge, titanium oxide, iron oxide, manganese oxide, titanium slag |
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Sitko E.A., Bobrov V.M., Kamirdinov A.G., Aidarkhanov A.Ye., Skornyakova L.G., Kvyatkovskaya M.N.Silicate-limy flux for converting of polymetallic mattes
Title | Silicate-limy flux for converting of polymetallic mattes |
Authors | Sitko E.A., Bobrov V.M., Kamirdinov A.G., Aidarkhanov A.Ye., Skornyakova L.G., Kvyatkovskaya M.N. |
Author´s information |
“Center of Earth sciences, metallurgy and ore benefication” JSC, lab of pirometallurgy of heavy nonferrous metals, Almaty Sitko E. A., Cand.Tech.Sci., leading scientific worker Bobrov V.M., Dr.Tech.Sci., chief scientific worker Skornyakova L.G., scientific worker Kvyatkovskaya M.N., scientific worker, lab of physical methods of analysis Balkhash copper-smelting plant Kamirdinov A.G., head of engineering department, abbas_k@mail.ru Aidarkhanov A.Ye., chief engineer of smelting shop |
Summary | Physicochemical properties of flux ores, containing 75,0 and 98,8% of silica and silicate-limy waste of blast-furnace production, are investigated. Optimal composition of silica-lime flux for converting of polymetallic copper mattes, containing siliceous ore and anthropogenic waste of blast-furnace production, containing about 33,7% of silica and 37,0% of calcium oxide, is chosen based on following criteria: quick formation of primary slag, small decrease of ore fluxing ability and increase of calcium oxide content in blended flux up to 8-10%. Content of blast-furnace slag in flux can change from 20 up to 30% depending on ore composition. It is established by laboratory experiments, that converting of polymetallic copper matte with ratio Fe/Pb = 2,0 by using optimal composition of mixed flux allows approximately two time decrease copper losses with converter slag and two time increase lead recovery into fume. |
Key words | flux, slag forming, converting, copper, lead, distribution |
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Physicochemical investigations
Bekturganova А.Zh., Sagintayeva Zh. I., Kassenova Sh.B., Kuanyshbekov E.E., Seisenova A.A., Kassenov B.K., Merkhatuly N.Heat capacity and thermodynamic functions of double chromites YbM
Title | Heat capacity and thermodynamic functions of double chromites YbMICr2O5 (MI – Li, Na) in the interval 298,15-673 K |
Authors | Bekturganova А.Zh., Sagintayeva Zh. I., Kassenova Sh.B., Kuanyshbekov E.E., Seisenova A.A., Kassenov B.K., Merkhatuly N. |
Author´s information | Karaganda state university named after Ye.A. Buketov Bekturganova А.Zh., undergraduate of chemical faculty Merkhatuly N., Dr.Chem.Sci., head of cathedra of inorganic chemistry Chemical – metallurgical institute named after Zh. Abishev, Karaganda Sagintayeva Zh.I., Cand.Chem.Sci., leading scientific worker Kassenova Sh.B., Dr.Chem.Sci., chief scientific worker Kuanyshbekov E.E., engineer Seisenova A.A., engineer Kassenov B.K., Dr.Chem.Sci., head of lab, kasenov1946@mail.ru |
Summary | Temperature dependences of heat capacity of double chromite YbMICr2O5 (MI = Li, Na) were investigated by method of dynamic calorimetry in the range 298.15–673 K. Synthesis of double chromites was carried out according to ceramic technology from oxides of ytterbium (III) and chromium (III) with using carbonate of alkaline earth metals at temperatures from 800 up to 1200°C in «SNOL» furnace during 20 hours. On the chromites dependences Ср~f(Т) curves λ – shaped peaks related to phase transitions of II – type were found, this is possibly associated with presence of transition metals ions. Equations of temperature dependences for the chromites’ heat capacity were derived on the basis of experimental data. Values of thermodynamic functions C°(Т), Н°(Т)-Н°(298,15), S°(Т) and Фхх(Т) were calculated. |
Key words | heat capacity, double chromite, thermodynamic functions, enthalpy, entropy |
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Toimankulov T.B., Akberdin A.A.Diagram of phase composition of Fe-Si-B system in analytical expressions
Title | Diagram of phase composition of Fe-Si-B system in analytical expressions |
Authors | Toimankulov T.B., Akberdin A.A. |
Author´s information | Chemical – metallurgical institute named after Zh. Abishev, Karaganda Toimankulov T.B., bachelor Akberdin A.A., Dr.Tech.Sci., head of lab., professor, akberdin.38@mail.ru |
Summary | Results of calculation-and-estimation researches on plotting and analysis of the diagram of phase composition of triplex system Fe-Si-B are discussed. Silicides (FeSi2, FeSi, Fe5Si3, Fe2Si, Fe3Si) and iron borides (Fe2B, FeB), and boron silicides (SiB4, SiB6) are secondary phases in mentioned triplex system. Coexisting phases in this system are found using the method of Gibbs energy minimization. Triangulation revealed inside it eight elementary triangles of the coexisting phases. Such triangles are 5 at taking into account only stable (congruently melting) phases. Graphic presentation of the resulted phase diagram of the system Fe-Si-B in the form of simple triangles of coexisting phases is given. Mathematical description of each elementary triangle is presented to numerical calculation of the formed secondary phases by balance method previously developed by the authors. This method links the type and number of formed phases with the initial chemical composition of the metal in the form of a mathematical equation. According to the obtained algorithms (mathematical equations), a computer program was developed. At input of chemical composition this computer program finds elementary triangle with metal, and delivers on monitor or printer its phase composition in mass percent. Examples of the program use are presented. Presence of secondary phases as FeSi2, SiB4 and Si is found in standard grade ferrosilicon FS75 with boron impurity. Similar calculations were made for crystalline silicon, which purity is very important. Information about phase composition of ferroalloys allows effective use they in steel production or develop methods for cleaning them from impurity elements with maximum preservation of matrix alloy. |
Key words | Gibbs energy, triplex system, phase composition diagram, mathematical model, silicon purification, boron, iron |
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Metallic systems investigation
Narivskiy A.E., Yar-Mukhamedova G.Sh.The influence of the chemical composition and structure of the 06ХН28МДТ alloy’s components on its corrosion losses in neutral chloride solutions
Title | The influence of the chemical composition and structure of the 06ХН28МДТ alloy’s components on its corrosion losses in neutral chloride solutions |
Authors | Narivskiy A.E., Yar-Mukhamedova G.Sh. |
Author´s information | “Azov machine works” JSC, Berdyansk, Ukraine Narivskiy A.E., Cand.Tech.Sci., deputy general director for scientific problems, zaoamz@yandex.ru “Center of Earth sciences, metallurgy and ore benefication” JSC, lab of physical metallurgy, Almaty Yar-Mukhamedova G.Sh., Dr.Phys.Math..Sci, professor, chief scientific worker, gulmira-alma-ata@mail.ru |
Summary | The complex of physical and chemical researches on studying of regularities and features during oxidation of 06ХН28МДТ alloy are carried out. As a result of the corrosion tests specified corrosion losses of Cr, Ni and Fe from 06ХН28МДТ alloy surface in chloride solutions at pH 6, 7 and chloride concentration of 600 mg/l are determined. Тhe regularities and mechanisms of corrosion dissolution of Cr, Ni and Fe from 06ХН28МДТ alloy surface depending on changes in its chemical composition and components structures within the standard are established. It is found, that in chloride-containing solution with рН 6 corrosion losses of Fe increase according to rectilinear law at increase of Cr, Мо content and decrease of P content in the alloy. Austenite-forming elements stabilize austenite structure, reduce ΔFe of the alloy. Complex carbides (Сr, Mo, Mn), C and Р, concentrated at borders of austenite grains, reduce ∆Fe, and fine oxy sulfides and nitrides of titanium increase it. Large inclusions as cathode protect the alloy, reducing ΔFe. It is established, that in chloride-containing solution with рН 7 corrosion losses of Cr increase according to rectilinear law at increase of Si and Ni content in alloy. Both fine and medium oxy sulfides and nitrides of titanium raise ΔCr on borders of austenite grains. Chromium in solid solution raises ΔCr of the alloy, and chromium in structure of carbides lowers it. Manganese and Si promote leaving of Р into solution and, thus, raise ΔCr. The phosphorus segregated on borders of grains, reduces ΔCr. Nickel supersedes Cr from a body of grain to periphery and thus increases ΔCr. It is shown that the alloy corrosion losses mainly depend on the structural heterogeneity. |
Key words | corrosion, pitting corrosion, chloride environment, chemical composition, oxy-sulfides, titanium nitride, austenite |
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Industrial waste utilization
Nadyrbekov A.K., Lis S.N., Khassen B.P., Smolenkov Yu.Yu.Experimental research to improve binding properties of slag from refined ferrochrome production
Title | Experimental research to improve binding properties of slag from refined ferrochrome production |
Authors | Nadyrbekov A.K., Lis S.N., Khassen B.P., Smolenkov Yu.Yu. |
Author´s information |
“Institute for complex development of mineral wealth” LTD, Karaganda Nadyrbekov A.K., Cand.Tech.Sci., head of lab, opi@ipkon.kz Lis S.N., senior scientific worker Khassen B.P., Cand.Tech.Sci., director Smolenkov Yu.Yu., junior scientific worker |
Summary | Now only 10-15% of metallurgical wastes are used as secondary material resources. Metallurgical slag is most effectively used in the production of binding materials. However, metallurgical slags with favorable chemical composition never show chemical activity in contact with water. The results of experimental studies on improving the binding properties of slags from the refined ferrochrome production are given in the paper. These studies show that it is possible to significantly improve (3-3,5 times) the binding properties of self-scattering slag from the refined ferrochrome production in the slag-alkaline binder by adding 14,5-14,6% of slag from the high-carbon ferrochrome production or baghouse dust of gas cleaning. The carried out research has proved correctness of the technique for determination of a mass fraction of the components in the mixture considering multicomponent materials as a complicated open thermodynamic system. |
Key words | Slag, refined ferrochrome production, high-carbon ferrochrome production, baghouse dust of gas-cleaning, multicomponent materials, binding materials |
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Memorable dates
To 90 age memory of academician of National Academy of sciences of Republic Kazakhstan Leonid Ni
To 90 age memory of academician of National Academy of sciences of Republic Kazakhstan Leonid Ni