Fractal kinetic characteristics for dissolving and leaching processes of strontium residue  

作　　者：XU Longjun WANG Xingmin QU Ge ZHOU Zhengguo YUE Fenhua 

机构地区：[1]Key Laboratory of the Exploitation of Southwest Resources and Environmental Disaster Control Engineering of Ministry of Education, Chongqing University, Chongqing 400044, China [2]College of Environmental andBiological Engineering, Chongqing Technology andBusiness University, Chongqing 400033, China

出　　处：《Chinese Journal Of Geochemistry》2010年第4期393-397,共5页中国地球化学学报

摘　　要：The pore structural characteristics of strontium residue were studied with the N2 adsorption method(ASAP2010).The kinetic properties concerning dissolving and leaching strontium waste were described by determining the concentrations of Sr2+,Ba2+ and soluble sulphides in solutions.The results showed that the specific surface area and pore volume increased with decreasing granule diameter,and the micropore surface of the residue was fractal.In the dissolving and leaching processes of strontium residue,soluble ion concentrations increased with decreasing granule diameter of the residue,and the reaction dimension was lower than the fractal dimension of pore surface.Sr2+ and soluble sulphide concentrations significantly exceeded the defined standard values,while Ba2+ concentrations did not,either in the dissolving or leaching solutions.In addition,dissolving and leaching reactions selectively occurred on the micropore surface of strontium residue.The pore structural characteristics of strontium residue were studied with the N2 adsorption method（ASAP2010）.The kinetic properties concerning dissolving and leaching strontium waste were described by determining the concentrations of Sr^2＋,Ba^2＋ and soluble sulphides in solutions.The results showed that the specific surface area and pore volume increased with decreasing granule diameter,and the micropore surface of the residue was fractal.In the dissolving and leaching processes of strontium residue,soluble ion concentrations increased with decreasing granule diameter of the residue,and the reaction dimension was lower than the fractal dimension of pore surface.Sr^2＋ and soluble sulphide concentrations significantly exceeded the defined standard values,while Ba^2＋ concentrations did not,either in the dissolving or leaching solutions.In addition,dissolving and leaching reactions selectively occurred on the micropore surface of strontium residue.

关 键 词：表面分形维数 动力学特性 浸出过程 可溶性硫化物 孔隙结构特征 锶 离子浓度 残渣 

分 类 号：TQ622.23[化学工程—精细化工] TP242[自动化与计算机技术—检测技术与自动化装置]