scholarly journals Magnetic concentration of titaniferous magnetite from Saguenay Exploration and Mining, Inc., Outremont, Quebec

1961 ◽  
Author(s):  
R S Kinasevich
Keyword(s):  
Titaniferous Magnetite ◽  
Magnetic Concentration

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 Specific binding and magnetic concentration of CD8+ T-lymphocytes on electrowetting-on-dielectric platform

2010 ◽  
Vol 4 (4) ◽  
pp. 044106 ◽  
Author(s):  
Gaurav J. Shah ◽  
Jeffrey L. Veale ◽  
Yael Korin ◽  
Elaine F. Reed ◽  
H. Albin Gritsch ◽  
...  
Keyword(s):  
T Lymphocytes ◽  
Specific Binding ◽  
Electrowetting On Dielectric ◽  
Cd8 T Lymphocytes ◽  
Magnetic Concentration

scholarly journals Improving Aptamer Selection Efficiency through Volume Dilution, Magnetic Concentration, and Continuous Washing in Microfluidic Channels

2011 ◽  
Vol 83 (17) ◽  
pp. 6883-6889 ◽  
Author(s):  
Seung Soo Oh ◽  
Kareem M. Ahmad ◽  
Minseon Cho ◽  
Seon Kim ◽  
Yi Xiao ◽  
...  
Keyword(s):  
Microfluidic Channels ◽  
Selection Efficiency ◽  
Aptamer Selection ◽  
Magnetic Concentration

Optimization of Reduction Parameters of Quenched Titaniferous Magnetite Ore by Boiler Grade Coal Using Box–Behnken Design

2019 ◽  
Vol 100 (2) ◽  
pp. 275-282
Author(s):  
Bitan Kumar Sarkar ◽  
Maharshi Ghosh Dastidar ◽  
Rajib Dey ◽  
Gopes Chandra Das ◽  
Souryadipta Chowdhury ◽  
...  
Keyword(s):  
Box Behnken Design ◽  
Magnetite Ore ◽  
Titaniferous Magnetite

scholarly journals Spin jam induced by quantum fluctuations in a frustrated magnet

2015 ◽  
Vol 112 (37) ◽  
pp. 11519-11523 ◽  
Author(s):  
Junjie Yang ◽  
Anjana Samarakoon ◽  
Sachith Dissanayake ◽  
Hiroaki Ueda ◽  
Israel Klich ◽  
...  
Keyword(s):  
Spin Glasses ◽  
Glassy State ◽  
Quantum Fluctuations ◽  
Driving Mechanism ◽  
Clean Limit ◽  
Topological Features ◽  
Magnetic Concentration ◽  
Frustrated Magnet ◽  
Frustrated Systems ◽  
Dilute Limit

Since the discovery of spin glasses in dilute magnetic systems, their study has been largely focused on understanding randomness and defects as the driving mechanism. The same paradigm has also been applied to explain glassy states found in dense frustrated systems. Recently, however, it has been theoretically suggested that different mechanisms, such as quantum fluctuations and topological features, may induce glassy states in defect-free spin systems, far from the conventional dilute limit. Here we report experimental evidence for existence of a glassy state, which we call a spin jam, in the vicinity of the clean limit of a frustrated magnet, which is insensitive to a low concentration of defects. We have studied the effect of impurities on SrCr9pGa12-9pO19 [SCGO(p)], a highly frustrated magnet, in which the magnetic Cr3+ (s = 3/2) ions form a quasi-2D triangular system of bipyramids. Our experimental data show that as the nonmagnetic Ga3+ impurity concentration is changed, there are two distinct phases of glassiness: an exotic glassy state, which we call a spin jam, for the high magnetic concentration region (p>0.8) and a cluster spin glass for lower magnetic concentration (p<0.8). This observation indicates that a spin jam is a unique vantage point from which the class of glassy states of dense frustrated magnets can be understood.

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