Electrostatic Separation of Fine Particles in Vibrated Fluidized Beds
Very fine particles which cannot be fluidized by means of a flowing gas alone because of entrainment may be effectively individualized and retained in the bed through a combination of gas at low rate flow and mechanical vibrations of selected frequency and amplitude. A mixture of very fine particles may be fluidized and successfully separated and/or concentrated by means of electrostatic fields. Results are presented of a factorial experiment in which the conditions of temperature, humidity, and voltage were investigated for the separation of a (50-50 by weight) synthetic mixture of iron and glass powder of particle size ranging from 15-45¿m. A new and highly efficient particle collection mechanism is introduced, and mathematical models of the process are presented as part of the optimization work.
Electrostatic Beneficiation Apparatus for Fluidized Iron and Other Ores
The paper presents a new apparatus for electrostatic beneficiation of fluidized ores. The apparatus comprises a fluidized bed, an optional metallic screen electrode located above the bed, and a series of collecting U-or V-shaped troughs. The troughs are moving horizontally below the screen. The vertical electric field traversing the fluid bed was produced by applying high voltage to a porous metallic plate on the floor of the bed and grounding the troughs and screen.
An introduction to dramatherapy
What Is Dramatherapy? Theory into Practice Preparing for Dramatherapy Beginning a Dramatherapy Session Applying Dramatherapy The Heart of Dramatherapy Dramatherapy and 'Mental Illness' Dramatherapy and Other Forms of Disorder of Mind Other Client Groups and Dramatherapy