scholarly journals Separation of magnetite concentrate before the last grinding stage

2020 ◽  
Vol 177 ◽  
pp. 01002
Author(s):  
Aleksei Pelevin ◽  
Vil Saitov ◽  
Vladimir Dmitriev
Keyword(s):  
Mechanical Properties ◽  
Laboratory Tests ◽  
Iron Ore ◽  
Dressing Method ◽  
Iron Concentrate ◽  
Economic Justification ◽  
Magnetite Concentrate ◽  
Ore Dressing ◽  
Rock Minerals ◽  
Titanium Magnetite

For magnetite and titanium magnetite ores, it is possible to use technology with the separation of concentrate before the last grinding stage. The possibility of staged separation of iron concentrate is due to different physical-mechanical properties of magnetite and rock minerals. The results of industrial and laboratory tests on the use of special magnetic separators with special structure, Derrick screen and screw separators in iron ore dressing schemes are presented. A comparison of proven dressing methods is performed. The choice of a specific dressing method for the staged separation of magnetite concentrate before the last grinding stage is determined by the properties of the base ore and the economic justification.

Development and Application of Complex Flashing-Field Magnetic Cleaner

2014 ◽  
Vol 1073-1076 ◽  
pp. 2177-2188
Author(s):  
Wen Li Jiang ◽  
Yi Min Zhang ◽  
Guang Quan Liang ◽  
Xi Wen Xia
Keyword(s):  
Magnetic Field ◽  
Iron Ore ◽  
Magnetic System ◽  
Operating Cost ◽  
Reverse Flotation ◽  
Test Results ◽  
Iron Concentrate ◽  
Magnetite Ore ◽  
Ore Dressing

In order to enhance the quality of iron concentrate from magnetic separation, reverse-flotation technology is often applied in iron ore dressing plant. However, this technology has disadvantages in operating cost, energy consumption and environmental protection (Zhao Chunfu, Wu Jianghua &Wang Hui ,2005). Developing innovative equipment to process magnetite ore more-effectively is a way to get rid of these disadvantages of reverse flotation and improve the quality of iron concentrate. This paper describes the development of Complex Flashing-Field Magnetic Cleaner, a new kind of equipment based on the principle of combination of separation in magnetic field and separation in gravity field (Hao Shuhua & Jiang Wenli,2002). This innovative equipment possesses a tailor-made magnetic system and has the characteristics of a magnetic field which can strengthen the formation of magnetic agglomerations and the dispersion of gangue minerals to improve the quality of separation. The automatic control system developed specifically for this equipment can further increase the accuracy of separation and stabilize the process. Test results showed that this equipment is reliable in operation, economically beneficial and it has large potential of application.

Experimental Research on the Iron Separation from an Ultra Poor Iron Ore

2012 ◽  
Vol 535-537 ◽  
pp. 746-749
Author(s):  
Wei Zhi Wang ◽  
Li Ping Chen ◽  
Chun Guang Yang
Keyword(s):  
Magnetic Separation ◽  
Iron Ore ◽  
Low Grade ◽  
Iron Recovery ◽  
Magnetic Separator ◽  
Iron Concentrate ◽  
Second Stage ◽  
Low Intensity ◽  
Two Stages ◽  
Titanium Magnetite

Test was made on separating iron from a ultra-low-grade vanadium titanium magnetite ore by a process of tailing discarding at a coarser size，staged grinding and staged low intensity magnetic separation. The results show that when the raw ore is treated by permanent dry magnetic separator with low intensity magnetic separation at 12～0 mm size，qualified tailings of about 20% yield can be discarded．The coarse concentrate is grounded in two stages. With the first stage grinding size being 45% -200 mesh and the second stage，75% -200 mesh，and then treated by two stage low intensity magnetic separation．As a result，an iron concentrate with a TFe grade of 65.80%and an iron recovery of 47.74%can be achieved．

LABORATORY TESTS OF THE PHYSICAL-MECHANICAL PROPERTIES OF MATERIALS FOR REMEDIAL JOBS

2020 ◽  
pp. 58-63
Author(s):  
M.A. Druzhinin ◽  
◽  
G.V. Okromelidze ◽  
O.V. Garshina ◽  
I.A. Kudimov ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Laboratory Tests ◽  
Mechanical Properties Of Materials ◽  
Properties Of Materials

scholarly journals Leaching Titaniferous Magnetite Concentrate by Alkaline Aqueous Solution

2021 ◽  
Author(s):  
Ke Guo ◽  
Shaoyan Wang ◽  
Renfeng Song ◽  
Zhiqiang Zhang
Keyword(s):  
Aqueous Solution ◽  
Alkali Concentration ◽  
Water Usage ◽  
X Ray Diffraction ◽  
High Concentration ◽  
X Ray ◽  
Iron Concentrate ◽  
Titaniferous Magnetite ◽  
Magnetite Concentrate ◽  
Kinetics Of

AbstractLeaching titaniferous magnetite concentrate with alkali solution of high concentration under high temperature and high pressure was utilized to improve the grade of iron in iron concentrate and the grade of TiO2 in titanium tailings. The titaniferous magnetite concentrate in use contained 12.67% TiO2 and 54.01% Fe. The thermodynamics of the possible reactions and the kinetics of leaching process were analyzed. It was found that decomposing FeTiO3 with NaOH aqueous solution could be carried out spontaneously and the reaction rate was mainly controlled by internal diffusion. The effects of water usage, alkali concentration, reaction time, and temperature on the leaching procedure were inspected, and the products were characterized by X-ray diffraction, scanning electron microscope, and energy dispersive spectroscopy, respectively. After NaOH leaching and magnetic separation, the concentrate, with Fe purity of 65.98% and Fe recovery of 82.46%, and the tailings, with TiO2 purity of 32.09% and TiO2 recovery of 80.79%, were obtained, respectively.

scholarly journals Mechanical properties of dental restorative materials: relative contribution of laboratory tests

2003 ◽  
Vol 11 (3) ◽  
pp. 162-167 ◽  
Author(s):  
Linda Wang ◽  
Paulo Henrique Perlatti D'Alpino ◽  
Lawrence Gonzaga Lopes ◽  
José Carlos Pereira
Keyword(s):  
Mechanical Properties ◽  
Laboratory Tests ◽  
Clinical Performance ◽  
Dental Materials ◽  
Correct Selection ◽  
Relative Contribution ◽  
Dental Restorative Materials ◽  
Restorative Materials ◽  
Dental Restorative ◽  
Selection Of

A wide variety of dental products that are launched on the market becomes the correct selection of these materials a difficult task. Although the mechanical properties do not necessarily represent their actual clinical performance, they are used to guide the effects of changes in their composition or processing on these properties. Also, these tests might help somehow the clinician to choose once comparisons between former formulations and new ones, as well as, with the leading brand, are highlighted by manufactures. This paper presents a review of the most important laboratory tests. In this manner, the knowledge of these tests will provide a critical opinion related to the properties of different dental materials.

Study on Cold-Pressing Technology for Mixture of Iron Ore and Coal

2011 ◽  
Vol 117-119 ◽  
pp. 882-886
Author(s):  
Jie Qin ◽  
Gong Guo Liu ◽  
Fei Hu Long
Keyword(s):  
High Pressure ◽  
Industrial Production ◽  
Iron Ore ◽  
Cold Pressing ◽  
Comprehensive Utilization ◽  
Vanadium Titanium ◽  
Titanium Magnetite ◽  
Pressing Technology

Operation principle of high-pressure briquetter is introduced. According to the problems arised from real production in pilot named as comprehensive utilization of vanadium-titanium magnetite, countermeasures have been proposed to solve these problems. At the base of carrying out a series of reformations on the equipments and now the high-pressure briquetter can meet the requirements of industrial production.

Pelletization of synthesized magnetite concentrate obtained by magnetization roasting of Indian low-grade BHQ iron ore

2020 ◽  
Vol 374 ◽  
pp. 190-200 ◽  
Author(s):  
Sachida Nanda Sahu ◽  
Prasanta Kumar Baskey ◽  
Santosh Deb Barma ◽  
Soumya Sahoo ◽  
B.C. Meikap ◽  
...  
Keyword(s):  
Iron Ore ◽  
Low Grade ◽  
Magnetite Concentrate

scholarly journals Carbothermal Reduction of Iron Ore in Its Concentrate-Agricultural Waste Pellets

2018 ◽  
Vol 2018 ◽  
pp. 1-6 ◽  
Author(s):  
Zhulin Liu ◽  
Xuegong Bi ◽  
Zeping Gao ◽  
Wei Liu
Keyword(s):  
Carbothermal Reduction ◽  
Iron Ore ◽  
Loss Rate ◽  
Direct Reduction ◽  
Agricultural Waste ◽  
Weight Loss Rate ◽  
Iron Concentrate ◽  
High Speeds ◽  
Reduction Of Iron ◽  
Biomass Char

Carbon-containing pellets were prepared with the carbonized product of agricultural wastes and iron concentrate, and an experimental study on the direct reduction was carried out. The experimental results demonstrated that carbon-containing pellets could be rapidly reduced at 1200 to 1300°C in 15 minutes, and the proper holding time at high temperature was 15 to 20 min. The degree of reduction gradually increased with temperature rising, and the appropriate temperature of reducing pellets was 1200°C. The weight loss rate and reduction degree of pellets increased with the rise of carbon proportion, and the relatively reasonable mole ratio of carbon to oxygen was 0.9. A higher content of carbon and an appropriate content of volatile matters in biomass char were beneficial to the reduction of pellets. The carbon-containing pellets could be reduced at high speeds in the air, but there was some reoxidization phenomenon.

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