Metallurgy
Vorobyev A.Ye., Anikin A.V, Chekushina T.V., Moldabayeva G.Zh. “Vasilyevsky mine” JSC gold extraction factory’s current activity on increase of efficiency of gold-bearing ore processing
Title | “Vasilyevsky mine” JSC gold extraction factory’s current activity on increase of efficiency of gold-bearing ore processing |
Authors | Vorobyev A.Ye., Anikin A.V, Chekushina T.V., Moldabayeva G.Zh |
Author´s information |
Russian University of International Friendship, Moscow, Russia Vorobyev A.E., Dr.Tech.Sci., corresponding member of RANS, head of cathedra, fogel_al@mail.ru Chekushina T.V., Cand.Tech.Sci, docent of cathedra Gazprom” OJSC, Moscow, Russia Anikin A.B., chif manager of department of project The mining institute named after D.A. Kunayev, Almaty Moldabayeva G.Zh., Dr.Tech.Sci., main scientific worker |
Summary | Questions of organizational actions for increase of efficiency of technology for gold recovery from ores on “Vasilyevsky Mine” JSC Gold Extraction Factory (GEF) are discussed. The organizational actions directed on increase of production efficiency at benefication and treatment, were grouped according to the basic processes: crushing, gravitation, cyanidation and sorbtion. Pilot researches showed practically direct dependence of gold extraction on degree of gold-bearing ore crushing. It is established, that gold-bearing ore crushing on the changed size of spheres increases productivity of the factory from 1000 t of ore per day up to 1100-1400 t. The high expediency of introduction of concentration tables and necessity of precise observance of requirements to their coating at first re-cleaning of the concentrate of the basic jigging is shown. Introduction of these actions allows increase extraction of gold in a cycle of gravitational benefication by 30%. Introduction of systems of automatization into condensation process promotes increase of efficiency of this technology by 15-20%. At studying dependence of processing duration on quality of lime milk it is recommended to use lime with high activity, that in 2-3 times reduces duration of the treatment. The new system of head sampling is developed and introduced at GEF, that has allowed to improve sharply reliability of results, to reduce labour input and to lower 6 times quantity of samples tested by laboratory from this operation. |
Key words | gold, gold-bearing ore, processing, benefication, efficiency, gold extraction factory, crushing, gravitation, cyanidation, sorbtion |
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Sadykanova S.E., Zagorodnyaya A.N., Abisheva Z.S., Sharipova A.S. Rhenium desorption from low-basic anionite A170 by ammonia solution
Title | Rhenium desorption from low-basic anionite A170 by ammonia solution |
Authors | Sadykanova S.E., Zagorodnyaya A.N., Abisheva Z.S., Sharipova A.S. |
Author´s information |
“Center of Earth sciences, metallurgy and ore benefication” JSC, lab of rare scattered elements, Almaty Sadykanova S.E., Cand.Tech.Sci., scientific worker Zagorodnyaya A.N., Dr. Tech.Sci., chief scientific worker Abisheva Z.S., Dr. Tech.Sci., corresponding member of RK Acad. of Sci., president of “CESMOB” JSC Sharipova A.S., Cand.Tech.Sci., scientific worker |
Summary | The results of researches on rhenium and sulphate-ions desorption from anionite A170 by ammonia solution depending on it concentration (0.5-2 mol/dm³), temperature (20-60°C, with step of 10°C) and flow rate of passing eluent (0.5, 1-3 sp. vol/h) have been presented in the article. The experiments were conducted in dynamic conditions. It was established that studied parameters and their intervals affected differently on the rhenium and sulphate-ions desorption from the anionite. They did not influence on the sulphate-ions desorption, which were desorbed more preferably than rhenium. Ammonia concentration increase more than 0.75 mol/dm³, temperature over 30°C affects positively, but slightly on the process of rhenium desorption. Flow rate of passing eluent increase more than 0.5 sp.vol/h effects negatively, but also was insignificant. |
Key words | desorption, ammonia, rhenium, sulphate-ions, anionite |
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Samojlov V.I., Onalbayeva Zh.S., Kulenova N.A., Zelenin V.I., Bajgazova N.A. Kinetics of sulfuric extraction of lithium from lepidolite activated by melting with sodium carbonate
Title | Kinetics of sulfuric extraction of lithium from lepidolite activated by melting with sodium carbonate |
Authors | Samojlov V.I., Onalbayeva Zh.S., Kulenova N.A., Zelenin V.I., Bajgazova N.A. |
Author´s information |
East-Kazakhstan State University named after Serikbayev, Ust-Kamenogorsk Samojlov V.I., Dr. Tech.Sci., docent Onalbayeva Zh.S., doctoral student, zhanara-05@mail.ru Kulenova N.A., Cand.Tech.Sci., head of cathedra Bajgazova N.A., Cand.Tech.Sci., docent Ural Federal University named after The first Russian President B. Yel’tsin, cathedra of Rare metals and nanomaterials, Yekaterinburg, Russia Zelenin V.I., Dr. Tech.Sci., professor |
Summary | Kinetics of sulfuric extraction of lithium from lepidolite activated by melting with sodium carbonate is investigated. When mineral lepidolite is opened with sulfur, lithium is not fully extracted into water-soluble sulfates. One of the methods for increasing lepidolite reactive capability is to involve its concentrate into melting with calcined soda. The concentrate is processed according to the procedure that includes melting of the concentrate with sodium carbonate, granulating of the melt with water, crushing of the granulated melt, sulphatization of the crushed melt by sulphuric acid and water leaching of sulphated melt. This procedure provides lithium transferring into water-dilutable lithium sulphate which will be further used for producing marketable lithium carbonate. This article covers determination of value of seeming activation energy for interaction of granulated material melt with sulphuric acid (11,4 kJ/mol). On the basis of determined value of Eseem it is possible to suppose that interaction of granulated material melt with sulphuric acid is limited by diffusion rate of acid molecules to reacting surface through the layer of formed reaction products. |
Key words | lepidolite, sodium carbonate, sulphatization, seeming activation energy, lithium extraction |
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Sarsenbay G., Myltykbaeva L.A., Abdulwaliyev R.A. Decomposition of alkaline aluminate solution by using dispersed seed
Title | Decomposition of alkaline aluminate solution by using dispersed seed |
Authors | Sarsenbay G., Myltykbaeva L.A., Abdulwaliyev R.A. |
Author´s information |
“Center of Earth sciences, metallurgy and ore benefication” JSC, lab of alumina and aluminium, Almaty Sarsenbay G., Cand.Tech.Sci., scientific worker, mer-pa@mail.ru Myltykbayeva L.A., Cand.Tech.Sci., vice-president of «Parasat» JSC. Astana Abdulvaliyev R.A., Cand.Tech.Sci., head of lab |
Summary | The process of alkaline aluminate solution decomposition was investigated under hydrothermal conditions by using dispersed and factory seeds. For the decomposition process there were used factories aluminum hydroxide and aluminum hydroxide with the dispersed composition, which was previously obtained from the process of chemical precipitation under certain conditions. Structural studies of the aluminum hydroxide particles obtained by decomposition were carried out by means of the electron-probe microanalysis and scanning electron microscopy, and phase composition of products was determined by means of X-ray diffraction analysis. The result of experiments shows that at the decomposition of solution with concentration of Al2O3 127 g/dm³ and αk 1.5 the speed and degree of decomposition will be higher when dispersed seed is used compared to case of factories seed. The degree of maximal decomposition – 73.9% was obtained after 7 hours decomposition; under these conditions dispersed aluminum hydroxide was obtained and 90% of its particles size not exceeding 100 nm. It was established that this product in form of dispersed seed obtained by us considerably reduces the duration of the decomposition process, allows to obtain dispersed aluminum hydroxide |
Key words | aluminum hydroxide, dispersed seed, decomposition, particle diameter, nanoparticles, degree of decomposition, alkali aluminate solution. |
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Semenchenko G.V., Abubakriyev A.T., Magomedov D.R. Working out the site for noble metals biochemical leaching from Akbakai gold extracting factory dumps
Title | Working out the site for noble metals biochemical leaching from Akbakai gold extracting factory dumps |
Authors | Semenchenko G.V., Abubakriyev A,T, Magomedov D.R. |
Author´s information |
“Center of Earth sciences, metallurgy and ore benefication” JSC, lab of noble metals, Almaty Semenchenko G.V., Cand.Biol.Sci., leading scientific worker Abubakriyev A.T, engineer Magomedov D.R., engineer |
Summary | The two-stage biochemical leaching site for noble metals extraction from Akbakaj gold-extracting factory dumps has been developed. At the first stage dumps are preprocessed by the mixed population of equal quantity of acidophilic (Acidithiobacillus ferrooxidans) and heterotrophic (Pseudomonas aureofaciens) bacteria. Preprocessing conditions were: stirring – 50-100 rpm, рН = 2.0-2.5, duration – 120 hours. Then the mix is settled (or is filtered in the filtering apparatus), the top part is put to acidophilic bacteria recultivation, and bottom – to a tub for leaching. At the second stage dumps were leached with complex leaching solution consisting of components in concentration: amino acid – 0.04 M, thiocyanate – 0.01 М, cyanide – 0.1 M, heterotrophic bacteria concentration was 106 cells/сm³. Leaching conditions were: рН 9.8-10.0; temperature – 20-23°С, agitation rate – 100 rpm; ratio of S:L = 1:2. If it is necessary, solution changes 2-3 times. The mix is settled. The cleansed solution arrives for sorption, gold free slag-heap – to tailing dump. The technology is tested in laboratory conditions on Akbakay gold-extracting factory dumps with the gold content 2.2 g/t. Gold extraction was about 92%. The advantages of two-stage site of biochemical leaching are: dumps preprocessing with the mixed population of acidophilic and heterotrophic bacteria gives the chance to use water with high salinity from local water spring Beskempir, which inactivates acidophilic monoculture. The additional dumps processing promotes decrease of anthropogenic load on environment and increases through gold extraction. |
Key words | bioleaching, dumps, noble metals, acidophilic and heterotrophic bacteria, gold |
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Sharipova A.S., Zagorodnyaya A.N., Abisheva Z.S., Sadykanova S.E. Rhenium recovery from ammoniac technogenic solutions of rhenium extraction technology
Title | Rhenium recovery from ammoniac technogenic solutions of rhenium extraction technology |
Authors | Sharipova A.S., Zagorodnyaya A.N., Abisheva Z.S., Sadykanova S.E. |
Author´s information |
“Center of Earth sciences, metallurgy and ore benefication” JSC, lab of rare scattered elements, Almaty Sharipova A.S., Cand.Tech.Sci., scientific worker Zagorodnyaya A.N., Dr. Tech.Sci., chief scientific worker Abisheva Z.S., Dr. Tech.Sci., corresponding member of RK Acad. of Sci., president of “CESMOB” JSC Sadykanova S.E, Cand.Tech.Sci., scientific worker |
Summary | Quality, quantity and chemical composition of the ammonia technological solutions formed during solvent extraction of rhenium from wash sulfuric acid at RSE ” Zhezkazganredmet ” and precipitates formed during neutralization of ammonia solutions by sulfuric, hydrochloric and nitric acid to pH 1 has been determined by different types of instrumental and chemical analyses. It was found that neutralization occurs with precipitation of ammonium salts of perrhenic acid, sulfuric acid , hydrochloric acid, nitric acid , sulfur of – a-modification, and probable humic acids. Osmium almost entirely remains in solution. From the neutralized solution, containing rhenium and osmium , rhenium selectively recovered by extraction with Hostarex A327 at a ratio of organic to aqueous phases in favor of the extractant. Solvent extraction technology of local processing of technogenic ammonia solutions has been developed, tested in pilot and industrial scale and adopted for implementation. Recovery of rhenium from solutions containing up to 8 – 10 g/dm³ of rhenium and 15 – 70 mg/dm³ of osmium into organic phase is 98.9%, from extract – 99.3%. |
Key words | ammoniac technogenic solutions, inorganic acids, rhenium, neutralization, precipitates, solvent extraction, technology |
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Shevko V.M., Serzhanov G.M., Karatayeva G.E., Badikova A.D. Joint chloride sublimation of Cu, Zn, Pb from sulfides in the presence of FeS
Title | Joint chloride sublimation of Cu, Zn, Pb from sulfides in the presence of FeS |
Authors | Shevko V.M., Serzhanov G.M., Karatayeva G.E., Badikova A.D. |
Author´s information |
Southern Kazakhstan State university named after M. Auezov, Shymkent Shevko V.M., Dr. Tech.Sci., professor of cath. Serzhanov G.M., doctoral– PhD student, gsm_ask@mail.ru Karatayeva G.E., Cand.Tech.Sci., docent of cath. Badikova A.D., engineer |
Summary | This article contains the research results of joint chlorination of Cu, Zn, Pb, Fe sulphides in the presence of calcium chloride. The researches were conducted by a method of thermodynamic modelling with using the program complex HSC-5.1 of the Finnish metallurgical company Outokumpu. It allows to define the equilibrium degree of distribution of the system’s elements on products of interaction depending on temperature, pressure and components’ ratio in the initial system. Conditions at which a maximum chloride sublimation of nonferrous metals and a minimum chloride sublimation of iron chlorides are observed, and also the equilibrium chemical equation of interaction in the system were defined. It was found, that a high (> 90%) chloride sublimation degree of Cu, Zn and Pb is observed at pressure 1 МРа and Т ≥ 1010-1280°С, however at these conditions a chloride sublimation degree of iron is appreciable (3,2-13,4%). The reduction of CaCl2 quantity down to 80% from the theoretically required quantity allows to decrease a chloride sublimation degree of iron to 1,44% at 1000°С with the simultaneous reduction of a chloride sublimation degree of copper to 89,4%, and zinc – to 77,9%. A chloride sublimation degree of iron can be reduced lower than 0,4% at 1100°С if the chlorination is carried out in the presence of water steam (1% from the weight of Cu, Fe, Zn sulphides); at these conditions a chloride sublimation degree of copper does not exceed 90%, and zinc – 82%. А low chloride sublimation degree of iron (0,11-0,33%) and a high chloride sublimation degree of copper (95,9-99,9%), lead (99,8-99,9%) and zinc (85,4-86,2%) can be achieved in the presence of water steams at 900-1100°С by means of the reduction of pressure to 0,1 МРа. |
Key words | sulphides of copper, zinc, lead, iron, metals chloride sublimation, thermodynamic modelling, Outokumpu program HSC-5.1complex |
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Yar-Mukhamedova G.Sh., Kasymzhanov K.K., Babazhanov D.R., Barkytova B.N. Working-off technique for sodium tungstate solutions membrane electrolysis
Title | Working-off technique for sodium tungstate solutions membrane electrolysis |
Authors | Yar-Mukhamedova G.Sh., Kasymzhanov K.K., Babazhanov D.R., Barkytova B.N. |
Author´s information |
“Center of Earth sciences, metallurgy and ore benefication” JSC, lab of titanium and rare refractory metals, Almaty Yar-Mukhamedova G.Sh., Dr.Phis.-Math.Sci., chief scientific worker, gulmira-alma-ata@mail.ru Kasymzhanov K.K., junior scientific worker Babazhanov D.R., engineer Barkytova B.N., engineer |
Summary | In the article the technique of membrane electrolysis and nonchemical reduce of pH of sodium tungstate solutions are presented. Sodium tungstate solution obtained by autoclave-carbonate leaching of scheelite concentrate from North Katpar deposit in laboratory autoclave during 120 minutes at temperature of 493 K, pressure of 6.1 atm was used for the experiments. Electrodialysis was carried out in a three-chambered electrodialyzer, electrode system of which is a set of structurally integrated chambers – anode, working and cathode, separated by a cationite membranes MC – 40. The anode chamber was filled with sulfuric acid solution (50 g/dm³ H2SO4), cathode – dilute sodium carbonate solution (5 g/dm³ Na2CO3), working – technological solution of sodium tungstate. Lead plate was used as an anode, plate from stainless steel 12X18H10T – as cathode. It was found that at the current density 200 mA/cm² in the working chamber intensive reduction in the concentration of sodium ions occurs within 120 minutes, then the process is slowed down and after 180 minutes the concentration scarcely changes. At a current density of 400 mA/cm² sodium ions transition from the working chamber to the catholyte stabilizes after 150 min. For a current density of 600 mA/cm² the concentration of sodium in the chamber is reduced from 39.05 down to 1.4 g/dm³. Thus there is an increase of the concentration of sodium in the catholyte from 2.17 up to 39.94 g/dm³. It is shown that during the electrolysis the controlled part of sodium is removed from the sodium tungstate solution and simultaneously an equivalent amount of hydrogen cations are introduced and reagentless acidification of the working solution to pH 1,18-1,33 occurs. |
Key words | electrolysis, sodium tungstate, scheelite concentrate, electrodialysis, current density, cationite membrane |
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Physical-chemical investigations
Kasenova Sh.B., Sagintayeva Zh.I., Kasenov B.K., Bekturganov N.S., Kuanyshbekov Ye.Ye.Heat capacity and thermodynamic properties of nanostructured cuprate-manganite of neodymium and strontium NdSr
Title | Heat capacity and thermodynamic properties of nanostructured cuprate-manganite of neodymium and strontium NdSr2CuMnO6 |
Authors | Kasenova Sh.B., Sagintayeva Zh.I., Kasenov B.K., Bekturganov N.S., Kuanyshbekov Ye.Ye. |
Author´s information |
Chemical and Metallurgical Institute named after Zh. Abishev, lab of thermochemical processes, Karaganda Kassenova Sh.B., Dr.Chem.Sci., chief scientific worker Sagintayeva Zh. I., Cand.Chem.Sci., leading scientific worker Kassenov B.K., Dr.Chem.Sci., head of lab, kasenov1946@mail.ru Kuanyshbekov E.E., engineer Bekturganov N.S., Dr. Tech.Sci., academician of RK Acad. of Sci., 1st vice-president of KazNAEN, Astsna |
Summary | Thermal capacity of the new nanostructured particles of cuprate-manganite NdSr2CuMnO6 obtained by a method of ceramic technology within an interval 800-1200°C from oxides of neodymium, copper (II), manganese (III) and a strontium carbonate was investigated by the method of dynamic calorimetry in the range of 298,15-673 K. The nanostructured particles of this cuprate-manganite were received on a vibration mill of MM301 (company Retsch, Germany) and their sizes were determined on an electronic microscope TESCAN. On the curve dependence of Ср°~f(T) in the specified interval of temperatures it is found λ – shaped effect at 398 K, relating probably to phase transition of II – type. The fundamental constant – the standard thermal capacity of NdSr2CuMnO6 equal to 248±16 of J / (mol×K) was determinated. Its standard entropy equal to 276±8 of J / (mol×K) was estimated by the approximate method. On the basis of the experimental data the equations describing dependences of Ср°~f(T) were derived and temperature dependences of the thermodynamic functions S°(T), H°(T) – H°(298,15) and Фхх(Т) of studied cuprate-manganite of neodymium and strontium were calculated. |
Key words | thermal capacity, cuprate-manganite, thermodynamic functions, neodymium, strontium, nanoparticles |
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Materials science
Mamayeva A.A., Sharkeyev Yu.P., Panichkin A.V., Aubakirova R.K, Kulyashova K.S., Glushko Yu.A., Amanzholova L.U., Kshibekova B.B.IR-fourier spectroscopic and structurally-phase researches of hydroxyapatite coating on VT1-0 titanic substrate
Title | IR-fourier spectroscopic and structurally-phase researches of hydroxyapatite coating on VT1-0 titanic substrate |
Authors | Mamayeva A.A., Sharkeyev Yu.P., Panichkin A.V., Aubakirova R.K, Kulyashova K.S., Glushko Yu.A., Amanzholova L.U., Kshibekova B.B. |
Author´s information |
“Center of Earth sciences, metallurgy and ore benefication” JSC, lab of physical metallurgy, Almaty Mamayeva A.A., Cand. Phis.-Math. Sci., head of lab, ak78@mail.ru Panichkin A.V., Cand.Tech.Sci., vice-president of Center Aubakirova R.K, Cand.Tech.Sci., senior scientific worker Kshibekova B.B., junior scientific worker Amanzholova L.U., Cand.Tech.Sci., scientific worker, lab of physical methods of analysis Institute of Strength Physics and Materials Science of Siberian Branch of Russian Academy of Sciences, Tomsk, Russia Sharkeyev Yu.P., Dr. Phis.-Math. Sci., head of lab, sharkeev@ispms.tsc.ru Kulyashova K.S., Cand. Phis.-Math. Sci., senior scientific worker Glushko Yu.A., senior scientific worker |
Summary | Calcium phosphate coatings on the titanium VT1-0 substrate were obtained by high-frequency magnetron sputtering technique. Surface morphology, phase and elemental composition of the coatings were investigated by scanning electron microscopy, energy dispersive X-ray analysis and infrared spectroscopy. It was found that depending on the discharge power and isothermal annealing temperature, molecular bonds are formed, typical for hydroxyapatite, accompanied by changes in the phase and elemental composition. Increase of discharge power up to 250 watt provides a denser and thick coating and promotes the formation of amorphous phase in the higher concentration – more than 20%. The ratio of the amorphous and crystalline phases determines the long-term strength of the coatings. |
Key words | high-frequency magnetron sputtering, biocompatibility, hydroxyapatite, calcium phosphate coating, IR- spectroscopy, titanium |
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Metallic systems investigation
Narivskiy A.E., Yar-Mukhamedova G.Sh.Regularities and mechanisms of Cr, Ni and Fe corrosion dissolution from 06HN28MDT alloy in chloride containing solution
Title | Regularities and mechanisms of Cr, Ni and Fe corrosion dissolution from 06HN28MDT alloy in chloride containing solution |
Authors | Narivskiy A.E., Yar-Mukhamedova G.Sh |
Author´s information |
“Azov machine works” JSC, Berdyansk, Ukraine Narivskiy A.E., Cand.Tech.Sci., deputy executive officer, zaoamz@yandex.ru “Center of Earth sciences, metallurgy and ore benefication” JSC, Almaty Yar-Mukhamedova G.Sh., Dr.Phys.Math.Sci, chief scientific worker, gulmira-alma-ata@mail.ru |
Summary | In the article the results of investigation of regularities and mechanisms of Cr, Ni and Fe corrosion dissolution from surface of the alloy 06HN28MDT in subacid chloride containing solution with pH 5 and chlorides concentration about 600 mg/dm³ are presented. It is shown, that corrosion losses of Cr, Ni and Fe from 06HN28MDT alloy surface depend on structural elements more than on chemical composition changing within the standard limits. It is established that intensive Cr dissolution from alloy surface occurs on the border of large nitrides and oxy sulfide of titanium with austenitic matrix. Small inclusions and carbides (Cr, Si, Mn) C, located on borders of austenite grains, reduce corrosion losses of Cr from the alloy. It is revealed that corrosion losses of Ni from the alloy directly proportionally increase with Si concentration increasing and phosphorus reduction. Small inclusions of nitrides and oxy sulfide of titanium anode activate the alloy along borders of austenite grains, increasing corrosion losses of Ni from the alloy. It is established that corrosion losses of Fe from the alloy proportionally increase with increasing of P concentration, temporary resistance gaping and reduction of titanium nitrides volume, concentration of C and Mn. Pitting, from which Fe is intensively dissolved, arises on the borders of an austenitic matrix with large nitrides and oxy sulfides of titanium. |
Key words | chloride solution, recycled water, pitting, corrosion losses, austenite grain |
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Industrial waste utilization
Miryuk O.A.Building materials from production waste silicate raw materials
Title | Building materials from production waste silicate raw materials |
Authors | Miryuk O.A. |
Author´s information |
Rudny industrial institute, Rudnyi Miryuk О.А, Dr. Tech.Sci, head of cathedra, psm58@mail.ru |
Summary | Article covers the problem of building industry raw-materials base expansion. The results of studies of the concretes with porous structure are given. The possibility of foamed concrete obtaining from binding on the base of metallurgical slag and cullet is experimentally confirmed. The liquid glass was used as a mixing. Concrete mixes were prepared by the method of foaming of slurry consisting of all raw materials. The influence of the composition of the solutions on the formation of foam is determined. The efficient ratios between the solid and liquid components of the raw material supply are established. The effect of various technological factors on the structure of porous materials is investigated. The results of porization research indicate primary influence of the foam former type, composition and quantity of alkaline mixing on forming of cellular structure. The preference of synthetic foaming agents is detected. Characteristics of the average density and strength of foam concretes, obtained from production waste materials, are presented. |
Key words | cullet, metallurgy slag, foam concrete, porization, porosity |
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