【摘 要】
：
To effectively utilize ilmenite and recycle KOH solution,the extraction behaviours of titanium and other associated impurities in the decomposition process of i
【机 构】
：
College of Chemistry and Environmental Science,Institute of Process Engineering
论文部分内容阅读
To effectively utilize ilmenite and recycle KOH solution,the extraction behaviours of titanium and other associated impurities in the decomposition process of ilmenite by highly concentrated KOH solution were studied.Experiments on the extraction behaviours of titanium as well as other associated impurities of ilmenite such as iron,silicon,calcium,and aluminiurn were carried out.The effects of various parameters,including reaction temperature,KOH concentration,reaction time,alkali-to-ore mass ratio,and particle size on the extraction rate of titanium and other impurities were examined.When the finely ground ore (58-75 μm) reacted with KOH solution (80wt％) in an alkali-to-ore mass ratio of 7:1 at 260°C for 60 min,almost complete extraction of titanium was achieved,while the extraction rate of aluminium was 78％ and that of other impurities was less than 22％.Moreover,high purity (98.2wt％) TiO2 with the anatase structure could be gained in the purification process.
其他文献
For the conventional single-ended eFuse cell,sensing failures can occur due to a variation of a post-program eFuse resistance during the data retention time an
To investigate the formation of internal cracks in GCr1 5 bearing steels during the soft reduction process in rectangular bloom continuous casting,fully coupled
The purpose of this paper is the design of neural network-based adaptive sliding mode controller for uncertain unknown nonlinear systems.A special architecture
This paper presents a combined application of the finite element method (FEM) and the differential quadrature method (DQM) to vibration and buckling problems of
Task scheduling for electro-magnetic detection satellite is a typical combinatorial optimization problem.The count of constraints that need to be taken into acc
The theory of compressed sensing (CS) provides a new chance to reduce the data acquisition time and improve the data usage factor of the stepped frequency radar
Nano-TiO2/Co4Sb11.7Te0.3 composites were prepared by mechanical alloying (MA) and cold isostatic pressing (CIP) process.The phase composition,microstructure,and
This paper analyzes the effect of waveform parameters on the joint target location and velocity estimation by a noncoherent multiple input multiple output (MIMO
The precursor of nanocrystalline ZrO2 was synthesized by solid-state reaction at low heat using ZrOCl2·8H2O,and Na2CO3·10H2O as raw materials.The nanocrystall
The effects of solution and aging treatments on the microstructures and mechanical properties of tungsten inert gas arc welded AZ61 magnesium alloy joints were