Leaching kinetics of rare earth from black weathering mud with hydrochloric acid
来源期刊：中国有色金属学报(英文版)2000年第4期
论文作者：池汝安 朱国才 田君
文章页码：531 - 533
Key words：kinetics; black weathering mud; leaching rare earth
Abstract: The affecting factors of leaching rate such as reacting temperature, mud particle size and concentration of reagents were determined by studying the leaching kinetics of rare earth from black weathering mud. The apparent activation energy is 9.08 kJ/mol from calculating the experimental data. The results show that the leaching process can be described by the shrinking core model and the leaching rate is controlled by diffusion of reacting reagents and reaction product in the porous solid layer. The leaching kinetics is established as:K=7.50×10-5×exp(-9 080/RT)/r20.
基金信息：the National Outsanding Younger Scholar Foundation of China
