矿浆斜窄流的固体浓度分布规律  

Law of Density Distribution in Tilting Slender Upflow of Mineral Pulp

作　　者：王喜良[1] 张文彬[1] 王文潜[2] 黄云平[2] 富文彬[2] 

机构地区：[1]昆明理工大学 [2]昆明冶金研究院

出　　处：《金属矿山》2005年第9期32-34,共3页Metal Mine

摘　　要：采用自制的斜窄流(斜浅层)单元动态连续试验装置,研究了矿浆斜窄(上升)流的固体浓度沿斜长、宽度及厚度的分布规律。结果表明,沿斜长的分布在斜窄流的雷诺数Re≤52.7时,可由对数方程表达;52.7≤Re≤100时,可由三次多项式表达。沿宽度分布的变化率<15%,在给料口侧为低浓度或轻液流区,对侧则为高浓度或重液流区,矿粒由高向低浓度区的横向扩散,使浓度分布的不匀得到缓解;沿厚度分布的变化在底板之上约10mm范围内急剧增大,形成高矿浆浓度的重液流,产生剪切流使沉降物下移。Self-made dynamic continuous laboratory device of TSU （ tilting slender upflow） cell was used to study the law of solids percent dlstribtuion of the mineral pulp＇s TSU along its length, width and thickness. It was concluded that the distribtuion along its length may be expressed by a logarithm equation when TSU＇s Re≤52.7 ,and by a cubic polymerization when 52.7 ≤ Re ≤ 100. The distribution along its width has a change rate of less than 15% and a low density or light flow area is formed at the inlet side and a high density or heavy flow area at the opposite side, leading to a transverse diffusion of particles from the high to the low density area to reduce the difference in density distribution. The change of solids percent along its thickness increases rapidly in a 10 mm thick scope on the bottom, forming high density pulp flow with shearing to move sediment down.

关 键 词：斜窄流 浅层沉降 重力过程 固体浓度 矿浆浓度 分布规律 连续试验装置 低浓度区 厚度分布 三次多项式 

分 类 号：TD953[矿业工程—选矿] TQ630.71[化学工程—精细化工]