人造金红石制备过程的浸出动力学

Leaching kinetics for preparation of synthetic rutile

研究了钛渣杂质浸出过程的动力学,利用未反应核收缩模型描述了反应过程.实验结果表明:杂质的浸出过程属于化学反应控制,浸出过程的表观活化能为43.52 kJ/mol.通过X射线衍射和扫描电镜分析了渣样的物相组成和显微形貌,改性渣中只含有金红石相和玻璃相,相比较改性前更加简单,有利于分离过程.

Leaching kinetics for preparation of synthetic rutile was studied.The core shrinking model was used to describe the leaching process.Kinetics experiments indicated that the control step of the leaching process was chemical reactions.The apparent activation energy of leaching process was 43.52 kJ/mol.The modified slag was analyzed by X-ray diffraction(XRD) and scanning electron microscope(SEM).Phase composition of the titanium slag is more simpler after modification process,and there are only rutile and impurity phase in the modified slag which is available for the separation process..