论文部分内容阅读
(一) 研究均匀粒群的干涉沉降,对于选矿、化工、冶金等工艺过程有着重要的意义。从十九世纪八十年代末期门罗(Mun-foe)提出单个球体在窄管内干涉沉降速度的经验公式后,已将近一个世纪。特别是到本世纪四十年代以后,由于炼制石油的大型催化裂化装置的投入生产,更促进了对均匀粒群悬浮(流态化)和沉降行为的研究。由于各个研究工作者的出发点和所建立的模型不同,得出了为数众多而形式各异的公式,其中不少的公式由于与实际相差较远,至今只
(A) Research on the interference settlement of uniform particle swarm is of great significance to beneficiation, chemical industry, metallurgy and other processes. It has been nearly a century since Mun-foe proposed the empirical formula for the individual sphere to settle within a narrow tube in the late 1880s. In particular, by the 1940s, research into the suspension (fluidization) and settling behavior of uniform particle swarms has also been facilitated by the large-scale production of petroleum-based catalytic cracking units. Due to the different starting points of each research worker and the established models, a large number of different formulas have been drawn. Many of them have only been far away from reality so far