scholarly journals Elaboration of a technology for production conditional ilmenite concentrate by enrichment of titanium-magnetite ores

2019 ◽  
Vol 75 (5) ◽  
pp. 572-576
Author(s):  
E. Yu. Degodya ◽  
O. P. Shavakuleva
Keyword(s):  
Titanium Dioxide ◽  
Steel Industry ◽  
Mass Fraction ◽  
Magnetic Fraction ◽  
Process Chain ◽  
Important Place ◽  
Flotation Process ◽  
Ilmenite Concentrate ◽  
Plant Equipment ◽  
Titanium Magnetite

The titanium-magnetite ores keep an important place among complex iron-containing ores. Utilization of these ores, comprising ores of Kopanskoe deposit, in steel industry is a serious problem, requiring for its solving enrichment resulting in obtaining iron-vanadium and ilmenite concentrates. A principal flow-chart of titanium-magnetite ores enrichment with obtaining conditional iron-vanadium and ilmenite concentrates elaborated. Results of flotation tests of non-magnetic fraction of Kopanskoe deposit titanium-magnetite ores, which is difficult for concentration. Application of flotation process for Kopanskoe deposit titaniummagnetite ores enrichment, which is difficult for concentration, enables not only to improve the enrichment indices, but considerably simplify the process chain of the plant equipment by excluding a big number of gravitational facilities. It was shown, that ilmenite and rutile flotation is successfully carried out in an acidic environment with the use of oleic acid, kerosene, sodium fluoride, sulfuric acid, foam activator VKP. The elaborated reagent complex provides obtaining conditional ilmenite concentrate. As a result of enrichment by application the elaborated magnetic flotation technology, iron-vanadium concentrate with a mass fraction of iron equal to 63.4 % and titanium dioxide – 4.5 % as well as ilmenite concentrate with a mass fraction of titanium dioxide equal to 45.2% obtained. The elaborated technology can be used for titanium-magnetite ores of Medvedevskoe, Kusinskoe, Chernorechenskoe deposits.

scholarly journals Investigation of the enrichment process of waste titanium production

1970 ◽  
Author(s):  
Sergey V. Lanowiecki ◽  
Olga G. Melkomkova ◽  
Semen G. Khudyakov
Keyword(s):  
Titanium Dioxide ◽  
Magnetic Separation ◽  
Large Fraction ◽  
Digital Camera ◽  
Optical Microscope ◽  
Considerable Proportion ◽  
Magnetic Fraction ◽  
X Ray ◽  
Ilmenite Concentrate ◽  
Enrichment Process

The paper presents a study of the process of enriching the waste of titanium production (sand and slag mixture) by mechanical and magnetic separation methods in order to reduce the losses of the useful component in the technology of processing ilmenite concentrate. The composition of the initial fraction of the test mixture and fractions obtained in the process of mechanical and magnetic separation was evaluated using X-ray and X-ray spectral analyzes. The particle size of the analyzed mixture was evaluated by means of a high-resolution scanning electron microscope «S-3400N» and an optical microscope «MBS-1» from a digital camera Webbers MYscope 560MCCD. As a result of the separation of the analyzed mixture by mechanical classification, it was shown that the fraction 0.16 ‑ 0.4 mm contains a considerable proportion of sand (up to 94%) and can be completely removed from the technology without further processing. The remaining fractions in addition to titanium dioxide, iron and its oxides contain a sufficiently large fraction of silicon dioxide, which can not be separated by the screen classification method. Studies on the separation of the analyzed mixture by the magnetic separation method have shown that it is possible to separate out phases of sand and titanium dioxide without iron impurities into the nonmagnetic fraction. At the same time, virtually all iron with its trivalent oxide remains in the magnetic part, as well as a sufficiently large fraction of silica and titanium particles, fused in larger pieces of the magnetic fraction. It is shown that in the process of magnetic separation, up to 100% of Fe + Fe2O3, 20% of SiO2 and 73% of TiO2 are transferred to the magnetic fraction. At the same time, with a non-magnetic fraction, on average, up to 80% of SiO2 and 27% of TiO2 are consumed.

scholarly journals Comparison between multi-walled carbon nanotubes and titanium dioxide nanoparticles as additives on performance of turbine meter oil nano lubricant

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Hadi Pourpasha ◽  
Saeed Zeinali Heris ◽  
Yaghob Mohammadfam
Keyword(s):  
Carbon Nanotubes ◽  
Titanium Dioxide ◽  
Friction Coefficient ◽  
Pressure Drop ◽  
Mass Fraction ◽  
Viscosity Index ◽  
Wear Depth ◽  
Nano Lubricant ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

AbstractThis research aims of compare the impact of the mass fraction of multi-walled carbon nanotubes (MWCNTs) and titanium dioxide (TiO2) nano additive on the tribological and thermophysical attributes of turbine meter oil. These attributes include the average friction coefficient, pressure drop, wear, flash point, pour point, relative viscosity, kinematics viscosity, and viscosity index. The pressure drops and the average friction coefficient inside the copper tube were simulated and compared with experimental results. In this study, for the synthesis of nano lubricants from turbine meter oil as a pure fluid and from MWCNTs and TiO2 as nano additives in the mass fraction of 0.05, 0.1, 0.2, 0.3, and 0.4 wt.% and from oleic acid and Triton x100 as surfactants were utilized. The results illustrated that the wear depth of copper pins in the presence of nano lubricant with 0.4 wt.% of MWCNTs and 0.1 wt.% TiO2 was improved by 88.26% and 71.43%, respectively. Increasing 0.3 wt.% of TiO2 and MWCNTs into the oil caused to improvement in viscosity index. The simulation data and experimental data for the pressure drop were closer together and indicated a minor error that the maximum error is less than 10%.

scholarly journals Transitioning of Steel Producers to the Steelworks 4.0 –Literature Review with Case Studies

Energies ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4109
Author(s):  
Bożena Gajdzik ◽  
Radosław Wolniak
Keyword(s):  
Literature Review ◽  
Case Studies ◽  
Steel Industry ◽  
Industry 4.0 ◽  
Strong Dependence ◽  
Industrial Robots ◽  
Basic Material ◽  
Sources Of Information ◽  
Important Place ◽  
Steel Mills

The publication presents a picture of modern steelworks that is evolving from steelworks 3.0 to steelworks 4.0. The paper was created on the basis of secondary sources of information (desk research). The entire publication concerns the emerging opportunities for the development of the steel producers to Industry 4.0 and the changes already implemented in the steel plants. The collected information shows the support environment for changes in the steel sector (EU programs), the levels of evolution of steel mills, along with the areas of change in the steel industry and implemented investment projects. The work consists of a theoretical part based on a literature review and a practical part based on case studies. The work ends with a discussion in which the staged and segmented nature of the changes introduced in the analyzed sector is emphasized. Based on the three case studies described in the paper, a comparative analysis was conducted between them. When we tried to compare methods used in the three analyzed steel producers (capital groups): ArcelorMittal, Thyssenkrupp, and Tata Steel Group, it can be seen that in all organizations, the main problem connected with steelworks 4.0 transition is the digitalization of all processes within an organization and in the entire supply chain. This is realized using various tools and methods but they are concentrated on using technologies and methods such as artificial intelligence, drones, virtual reality, full automatization, and industrial robots. The effects are connected to better relations with customers, which leads to an increase in customer satisfaction and the organizations’ profit. The steel industry will undergo further strong changes, bringing it closer to Industry 4.0 because it occupies an important place in the economies of many countries due to the strong dependence of steel producers on the markets of the recipients (steel consumers). Steel is the basic material needed to make many products, and its properties have been valued for centuries. In addition, steel mills with positive economic, social, and environmental aspects are part of the concept of sustainability for industries and economies.

Study on CO2 Emission in the Process of Dealing with Vanadium-Titanium Magnetite

2011 ◽  
Vol 337 ◽  
pp. 125-132
Author(s):  
Jie Qin ◽  
Xun Xue ◽  
Jun Deng
Keyword(s):  
Steel Industry ◽  
Pilot Plant ◽  
Iron And Steel Industry ◽  
Pig Iron ◽  
Iron And Steel ◽  
Vanadium Titanium ◽  
The Difference ◽  
Titanium Magnetite ◽  
At Home

Situations of the CO2emission in steel industry at home and abroad are introduced in this paper firstly. Then CO2emission is calculated in the RHF—EAF flow for treating V-Ti magnetite according to data from the pilot plant in Pangang Group. Besides, CO2emission of the traditional BF process is calculated as well. The results show that CO2emission is 1427.3kg/t pig iron and 1508.7kg/t for the pilot and BF process, respectively. Otherwise, the difference between the two processes is analyzed and the prospect for the reduction of CO2emission in the iron and steel industry is proposed as well.

scholarly journals Low-Frequency Magnetic Scanning Device and Algorithm for Determining the Magnetic and Non-Magnetic Fractions of Moving Metallurgical Raw Materials

2019 ◽  
Vol 9 (10) ◽  
pp. 2001
Author(s):  
Vladimir Kochemirovsky ◽  
Svetlanav Kochemirovskaia ◽  
Michael Malygin ◽  
Alexey Kuzmin ◽  
Maxim Novomlinsky ◽  
...  
Keyword(s):  
Mass Fraction ◽  
Raw Materials ◽  
Low Frequency ◽  
Raw Material ◽  
Magnetic Characteristics ◽  
Magnetic Fraction ◽  
Measuring Device ◽  
Mathematical Algorithm ◽  
Macroscopic Objects

The development of an algorithm to automate the process of measuring the magnetic properties of macroscopic objects in motion is an important problem in various industries, especially in ferrous metallurgy and at factories where ferrous scrap is a strategic raw material. The parameter that requires work control is the hidden mass fraction of a non-magnetic substance that is present in the ferromagnetic raw material. The solution to this problem has no prototypes. In our work, a simple measuring device and a mathematical algorithm for calculating the mass fraction of the non-magnetic fraction in a strongly magnetic matrix were developed. The device is an inductance coil, in which the angle of the electromagnet losses is related to the mass of the magnetic material moving the coil. The magnitude of the instantaneous values of the lost angle integral was compared with the result of weighing the object on scales. This allowed us to calculate the proportion of the magnetic and non-magnetic fractions. The use of this prototype is herein illustrated. The experimental results of the determination of the magnetic-fractional composition depending on the mass of scrap metal and its bulk and the magnetic characteristics are presented.

Fine hydraulic screening for staged separation of titanium-magnetite concentrate

2021 ◽  
pp. 8-14
Author(s):  
A. E. Pelevin ◽  
N. A. Sytykh
Keyword(s):  
Process Parameters ◽  
Mass Fraction ◽  
Process Efficiency ◽  
Separation Technology ◽  
Concentration Process ◽  
Process Indicators ◽  
Operating Modes ◽  
Magnetite Concentrate ◽  
Concentrate Grade ◽  
Titanium Magnetite

This article covers the applications of fine hydraulic screening for the staged separation of titanium-magnetite concentrates upstream of the last grinding stage and provides an evaluation of its process efficiency options for the Kachkanarsky GOK. In all screen operating modes tested, the mass fraction of iron in the undersize was higher than its mass fraction in the oversize, but failed to reach the target value for the concentrate of 61 %. Therefore, the undersize must be subjected to additional magnetic concentration. Staged separation of the concentrate by fine screening allows either to improve concentrator performance (by up to 10 %) or to increase the concentration process indicators without changing the grinding equipment volume. In this case, the undersize yield averages 55 %. The use of the staged concentrate separation technology with fine screening at constant process parameters and steady factory performance allows reducing the tertiary mill volume in relative terms, not exceeding half of the undersize yield from the operation, which shall be 65–70 %. The minimum permissible values of the mass fraction of iron and of the –0.071 mm class in the screen feed and the undersize must be ensured for obtaining the required concentrate grade. The values of these indicators depend on the material composition of the ore and the concentration process used.

Research Progress of Flotation Process for Hematite

2013 ◽  
Vol 641-642 ◽  
pp. 500-503
Author(s):  
Wei Zhi Wang ◽  
Li Peng Chen ◽  
Chun Guang Yang
Keyword(s):  
Steel Industry ◽  
Research Progress ◽  
Iron And Steel Industry ◽  
Flotation Reagent ◽  
Paper Briefly ◽  
Coordinated Development ◽  
Flotation Process ◽  
Iron And Steel ◽  
Historical Significance ◽  
Development And Utilization

This paper briefly describes the situation of the development of China's iron and steel industry. Based on the introduction of the basis and the nature causes of hematite, the mainly used flotation process of hematite is discussed. The importance and urgency of improving technology, the research and development of new flotation reagent is put forward. The good development and utilization of hematite will have far-reaching economic and historical significance for the healthy and coordinated development of our national economy.

scholarly journals Estimation of indices of BF heat of titanium-magnetite concentrates with different titanium dioxide content

2019 ◽  
Vol 75 (2) ◽  
pp. 154-165 ◽  
Author(s):  
A. N. Dmitriev ◽  
G. Yu. Vit’kina ◽  
R. V. Petukhov ◽  
S. A. Petrova ◽  
Yu. A. Chesnokov
Keyword(s):  
Titanium Dioxide ◽  
Iron Ore ◽  
Raw Materials ◽  
Slag Viscosity ◽  
Hot Strength ◽  
Titanium Dioxide Content ◽  
Metallurgical Processing ◽  
Economic Indices ◽  
Academy Of Sciences ◽  
Titanium Magnetite

Russia owns world largest reserves of titanium- magnetite and ilmenite- titanium- magnetite ores. Following the stepby-step inclusion into metallurgical processing of titanium- magnetite raw materials, the matter of maximum extraction of iron, vanadium and titanium becomes more and more actual. Kachkanar group of deposits of titanium- magnetite ores consists of two deposits: Gusevgoskoe and Sobstvenno-Kachkanar. At present JSC EVRAZ NTMK uses titanium- magnetite sinter and pellets, produced of Gusevgorskoe deposit ores. To make up the dropped out capacities and to keep the volume of mined ore at the level of 55 m t/year, it is planned to put into operation the reserved Sobstvenno-Kachkanar deposit. To process the titanium- magnetite ores of this deposit, their specific peculiarities should be taken into consideration. In particular, the increased TiO2content in iron ore concentrate up to 3.4% might require corrections of the BF technology. In this connection a study of metallurgical properties of lump iron ore raw materials with different titanium dioxide content was carried out. To clarify the pellets phase components a method of X-ray-phase analysis was used. The studies were done at CKP “Ural-M” equipment in the Institute of Metallurgy, Ural branch of Russian academy of Sciences. It was determined that pellets chemistry was represented by hematite (from 77 up to 89%), magnetite (from 2.84 up to 10.44%), complicated diopside (from 2 up to 10%), as well as in a small amount by quartz, hedenbergite, corundum, rutile, ferro-periclase, ilmenite, wollastonite, α-Fe, wustite. Results of viscosity calculation of obtained slags showed that it is within a range, typical for real BF slags viscosity. The obtained values of slag viscosity do not offer problems with slag regime of BF heat. It was shown, that increase of titanium dioxide content in pellets does not give rise to quality deterioration of iron ore raw materials preparation to BF heat as volume of introduced concentrate with increase TiO2content into the materials is increasing. Increase of hot strength and pellets temperature of beginning of softening, the pellets having increased titanium dioxide content, will positively affect main technical and economic indices of BF heat – coke rate and productivity, that was confirmed by BF indices calculation by application of balance logical and statistical model of BF process. 

scholarly journals Research on modeling the technology of processing anthropogenic old tailings of Primorsky Concentrating Factory

2020 ◽  
Vol 192 ◽  
pp. 02011
Author(s):  
Elena Shepeta ◽  
Natalia Litvinova ◽  
Marina Bubnova ◽  
Mehmet Bilen
Keyword(s):  
Mass Fraction ◽  
Experimental Studies ◽  
Sand Fraction ◽  
Flotation Process ◽  
Flotation Machine ◽  
Average Mass ◽  
Scheelite Concentrate ◽  
Concentration Degree ◽  
Flotation Concentration

The possibility of processing old tailings of the Primorsky Concentrating Factory (PCF) has been assessed. The average mass fraction of WO3 is 0.08%, Cu is 0.052%, the average content of Au is 0.38 ppm, Ag is 1.1 ppm. The grain size of scheelite and chalcopyrite is from 0.03 mm and below. Basically, intergrowths of scheelite are in quartz, less often is in pyroxene, chalcopyrite is in pyrrhotite, less often is in quartz. The results of experimental studies of the washability of secondary mineral material using flotation and gravity beneficiation methods are presented. The possibility of intensifying the flotation process of concentration using a Pneuflot® flotation machine was investigated. The recovery of scheelite at the same degree of concentration using a Pneuflot® flotation machine is 16.5% higher compared to the standard mechanical flotation machine, mainly due to the more efficient flotation (1.5 times) of sludge (-15+0 μm). Flotation of the sand fraction of old tailings (SFOT) in a Pneuflot® flotation machine showed an opportunity of scheelite recovery into enriched concentrate of rough flotation from -44+15 microns material by 82%, and -15+0 microns (from sludge) by 75% of those classes, the case being for the mechanical machine (volume 3 l) – 77% and 49% of those classes, respectively. The content of the obtained flotation concentrate corresponds to the quality of the feed of rough scheelite flotation at PCF (at a concentration degree of 8.5 in the enriched product, the scheelite recovery was 69%), enabling to integrate it to the technological scheme of PFC. According to the combined gravity-flotation concentration scheme, a conditioned scheelite concentrate with a mass fraction of 70.9% WO3 was obtained, throughout recovery being 57.3%.

scholarly journals Comparison between multi-walled carbon nanotubes and Titanium dioxide nanoparticles as additives on performance of Turbine meter oil nano lubricant

2020 ◽  
Author(s):  
Hadi Pourpasha ◽  
Saeed Zeinali Heris ◽  
Yaghob Mohammadfam
Keyword(s):  
Carbon Nanotubes ◽  
Titanium Dioxide ◽  
Friction Coefficient ◽  
Pressure Drop ◽  
Mass Fraction ◽  
Viscosity Index ◽  
Nano Lubricant ◽  
Multi Walled Carbon Nanotubes ◽  
Nano Additives ◽  
Walled Carbon Nanotubes

Abstract This research work purpose to compare the impact of the mass fraction of multi-walled carbon nanotubes (MWCNTs) and Titanium dioxide (TiO2) nano additive on the tribological and thermophysical attributes of turbine meter oil. These attributes are including the average friction coefficient, pressure drop, wear, flash point, pour point, relative viscosity, kinematics viscosity, and viscosity index. Also, the pressure drops and the average friction coefficient inside the copper tube were simulated and compared with experimental results. In this study, for the synthesis of nano lubricants from turbine meter oil as a pure fluid and from MWCNTs and TiO2 as nano additives in the mass fraction of 0.05, 0.1, 0.2, 0.3, and 0.4 wt.% and from oleic acid and Triton x100 as surfactants were utilized. The diameter of MWCNTs and TiO2 nano additives were ranging from 5 nm to 16.1 nm and 7.9 nm to 13.9 nm, respectively. The average particle size of TiO2 and MWCNTs nano additives in 0.4 wt.% in the pure lubricant were 221 nm and 320 nm, respectively. The results illustrated that the wear depth of copper pins in the presence of nano lubricant with 0.4 wt.% of MWCNTs and 0.1 wt.% TiO2 was improved by 88.26% and 71.43%, respectively. Nano lubricants with 0.3 wt.% of TiO2 and 0.4 wt.% of MWCNTs nano additives illustrated the maximum improvement in the flash point temperature with enhancement 4 °C and 10 °C. By increasing of 0.3 wt.% of TiO2 and MWCNTs into the pure oil caused to improve in viscosity index with enhancement 6.68% and 2.43% compared to the pure lubricant, respectively. The simulation data and experimental data for the pressure drop were closer together and indicated a minor error that the maximum error is less than 10%.

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