相关期刊:《Science Bulletin》《China Rare Earth Information》《International Journal of Mining Science and Technology》《Transactions of Nonferrous Metals Society of China》更多>>
Project supported by the National Key R&D Program of China (2022YFC2905800);National Natural Science Foundation of China(52174242)。
To investigate the thermal decomposition behavior and reaction kinetics of bastnaesite in suspension roasting,the gas and solid products of bastnaesite roasted in N2 and air atmospheres were examined using a gas analy...
Project supported by the National Key Research and Development Program of China(2020YFC1907500);the Fundamental Research Funds of the Ministry of Education of China(N2125033)。
The bastnaesite was defluorinated by steam roasting process,and fluorine was removed in the form of hydrogen fluoride to realize the separation from rare earth.The effects of particle size of raw material,roasting tem...
the National Natural Science Foundation of China(51176122,41641010);the Science and Technology Support Project of Sichuan Province(2016SZ0071,20GJHZ0042)。
The bastnaesite used in hydrometallurgy usually contains 7%-11% fluorine,and the conversion of fluorine into high-value products is the key to achieving green production of rare earths and improving the comprehensive ...
Project supported by the National Basic Research Program(973 Program,2012CBA01205)。
Isoconversional methods combined with thermogravimetry were applied to investigate the decomposition kinetics of bastnaesite concentrates with different amounts of calcium hydroxide added.The apparent activation energ...
Project supported by the Fundamental Research Funds for the Central Universities(973 program,No.N172506009,N170908001)
A novel process of calcification-leaching for bastnaesite concentrate(REFCO3) was proposed. The prior calcification was carried out in the system of NaOH-CaO-H2O and the lgC-pH pattern for Ce-F-Ca-C-H2O system was dra...
supported by the National Natural Science Foundation of China(51404035);Beijing Nova program(Z161100004916108)
To clearly elucidate the oxidative roasting behaviors of the bastnaesite, the thermal decomposition and oxidation of the bastnaesite concentrate in inert and oxidative atmosphere have been investigated in detail. Expe...
Project supported by the National Natural Science Foundation of China(51634005,51564042);the Natural Science Foundation of Inner Mongolia Autonomous Region of China(2016ZD05,2014ZD04)
The influence of temperature on the complex process of Bayan Obo rare earth (RE) ore flotation with a collector of naphthyl hydroxamic acid (LF8#) was investigated. Industrial test data shows that the grade and re...
Project supported by the National Natural Science Foundation of China(51404035);Beijing Nova program(Z161100004916108)
In order to study the aqueous stability of rare earth and thorium elements and the reaction mechanism of hydrochloric acid leaching of roasted bastnaesite,Eh-pH diagrams for La-,Nd-,Ce-,Th-(Cl)-(F)-H2 O systems at...
financially supported by the National Basic Research Program of China (No. 2012CBA01205)
The phase transformation in calcification process was investigated by X-ray diffraction (XRD) and differential scanning calorimeter (DSC), and the effect of calcification on the leaching rate of rare earth was ana...
Project supported by National Basic Research Program of China(973 Program)(2012CBA01205)
Extracting rare earths from bastnaesite concentrate treated by calcification transition was studied through the single factor test and XRD patterns of bastnaesite after calcification and slags after leaching in HCl so...