铝合金铸轧机组用硅藻土的油-土解吸动力学模型研究  

Study on the kinetic model of oil and soil desorption of the diatomite used in aluminum alloy cast rolling mills

作　　者：谭国寅[1,2] 胥福顺[1,2] 杨钢[1,2] 岳有成[1,2] 曹瑞珂[1,2] 马宁 

机构地区：[1]昆明冶金研究院,云南昆明650031 [2]共伴生有色金属资源加压湿法冶金技术国家重点实验室,云南昆明650031 [3]云南浩鑫铝箔有限公司,云南昆明650031

出　　处：《轻合金加工技术》2017年第4期16-19,共4页Light Alloy Fabrication Technology

基　　金：云南省应用基础研究重大项目(项目编号:2013FC010);云南省应用基础研究青年项目(项目编号:2016FD120)

摘　　要：试验研究了在铝合金铸轧机组中广泛使用的硅藻土在不同温度下的油-土解吸行为。采用二室一级动力学模型来描述整个解吸过程。结果表明,整个解吸过程包含快解吸阶段和慢解吸阶段。获得了不同温度下的解吸动力学方程。拟合相关系数表明二室一级动力学模型更符合实际的解吸过程。计算出了解吸过程所需要的表观活化能。快解吸过程是一个物理过程,而慢解吸阶段由于出现了分子间化学键断裂,导致消耗了更多的热能。As to the diatomite widely used in aluminum alloy cast rolling mills, its oil and soil desorption behavior was studied at different temperatures. The whole desorption process was described by a two-compartment first order kinetic model. The results show that the whole desorption process can be divided into a rapid desorption phase and a slow desorption phase. Desorption kinetic equations at different temperatures are obtained at the same time. Fitting correlation coefficients show that the two-compartment first order kinetic model is more con- sistent with the actual desorption process. The apparent activation energy is calculated as needed by the desorption process. The rapid adsorption process is a physical process. The slow desorption phase consumes more heat energy because moleeular chemical bond breaks in this process.

关 键 词：铝合金铸轧机组 硅藻土 油-土解吸 动力学模型 活化能 

分 类 号：TG333[金属学及工艺—金属压力加工] TQ424.22[化学工程]